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authorValentin Popov <valentin@popov.link>2024-01-08 00:21:28 +0300
committerValentin Popov <valentin@popov.link>2024-01-08 00:21:28 +0300
commit1b6a04ca5504955c571d1c97504fb45ea0befee4 (patch)
tree7579f518b23313e8a9748a88ab6173d5e030b227 /vendor/cc
parent5ecd8cf2cba827454317368b68571df0d13d7842 (diff)
downloadfparkan-1b6a04ca5504955c571d1c97504fb45ea0befee4.tar.xz
fparkan-1b6a04ca5504955c571d1c97504fb45ea0befee4.zip
Initial vendor packages
Signed-off-by: Valentin Popov <valentin@popov.link>
Diffstat (limited to 'vendor/cc')
-rw-r--r--vendor/cc/.cargo-checksum.json1
-rw-r--r--vendor/cc/Cargo.lock111
-rw-r--r--vendor/cc/Cargo.toml43
-rw-r--r--vendor/cc/LICENSE-APACHE201
-rw-r--r--vendor/cc/LICENSE-MIT25
-rw-r--r--vendor/cc/README.md233
-rw-r--r--vendor/cc/src/bin/gcc-shim.rs70
-rw-r--r--vendor/cc/src/com.rs156
-rw-r--r--vendor/cc/src/lib.rs4024
-rw-r--r--vendor/cc/src/os_pipe.rs28
-rw-r--r--vendor/cc/src/os_pipe/unix.rs121
-rw-r--r--vendor/cc/src/os_pipe/windows.rs24
-rw-r--r--vendor/cc/src/registry.rs190
-rw-r--r--vendor/cc/src/setup_config.rs283
-rw-r--r--vendor/cc/src/vs_instances.rs199
-rw-r--r--vendor/cc/src/winapi.rs146
-rw-r--r--vendor/cc/src/windows_registry.rs896
-rw-r--r--vendor/cc/src/windows_sys.rs198
-rw-r--r--vendor/cc/tests/cc_env.rs118
-rw-r--r--vendor/cc/tests/cflags.rs15
-rw-r--r--vendor/cc/tests/cxxflags.rs15
-rw-r--r--vendor/cc/tests/support/mod.rs172
-rw-r--r--vendor/cc/tests/test.rs477
23 files changed, 7746 insertions, 0 deletions
diff --git a/vendor/cc/.cargo-checksum.json b/vendor/cc/.cargo-checksum.json
new file mode 100644
index 0000000..b68f5a3
--- /dev/null
+++ b/vendor/cc/.cargo-checksum.json
@@ -0,0 +1 @@
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diff --git a/vendor/cc/Cargo.lock b/vendor/cc/Cargo.lock
new file mode 100644
index 0000000..0c9b73e
--- /dev/null
+++ b/vendor/cc/Cargo.lock
@@ -0,0 +1,111 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
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+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
+name = "cc"
+version = "1.0.83"
+dependencies = [
+ "jobserver",
+ "libc",
+ "tempfile",
+]
+
+[[package]]
+name = "cfg-if"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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+dependencies = [
+ "instant",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "jobserver"
+version = "0.1.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "068b1ee6743e4d11fb9c6a1e6064b3693a1b600e7f5f5988047d98b3dc9fb90b"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.134"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "329c933548736bc49fd575ee68c89e8be4d260064184389a5b77517cddd99ffb"
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "remove_dir_all"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
+dependencies = [
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+]
+
+[[package]]
+name = "tempfile"
+version = "3.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5cdb1ef4eaeeaddc8fbd371e5017057064af0911902ef36b39801f67cc6d79e4"
+dependencies = [
+ "cfg-if",
+ "fastrand",
+ "libc",
+ "redox_syscall",
+ "remove_dir_all",
+ "winapi",
+]
+
+[[package]]
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+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
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+
+[[package]]
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diff --git a/vendor/cc/Cargo.toml b/vendor/cc/Cargo.toml
new file mode 100644
index 0000000..e597edc
--- /dev/null
+++ b/vendor/cc/Cargo.toml
@@ -0,0 +1,43 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+name = "cc"
+version = "1.0.83"
+authors = ["Alex Crichton <alex@alexcrichton.com>"]
+exclude = ["/.github"]
+description = """
+A build-time dependency for Cargo build scripts to assist in invoking the native
+C compiler to compile native C code into a static archive to be linked into Rust
+code.
+"""
+homepage = "https://github.com/rust-lang/cc-rs"
+documentation = "https://docs.rs/cc"
+readme = "README.md"
+keywords = ["build-dependencies"]
+categories = ["development-tools::build-utils"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/rust-lang/cc-rs"
+
+[dependencies.jobserver]
+version = "0.1.16"
+optional = true
+
+[dev-dependencies.tempfile]
+version = "3"
+
+[features]
+parallel = ["jobserver"]
+
+[target."cfg(unix)".dependencies.libc]
+version = "0.2.62"
+default-features = false
diff --git a/vendor/cc/LICENSE-APACHE b/vendor/cc/LICENSE-APACHE
new file mode 100644
index 0000000..16fe87b
--- /dev/null
+++ b/vendor/cc/LICENSE-APACHE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
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+5. Submission of Contributions. Unless You explicitly state otherwise,
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+APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
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+ file or class name and description of purpose be included on the
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+Copyright [yyyy] [name of copyright owner]
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+Licensed under the Apache License, Version 2.0 (the "License");
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+You may obtain a copy of the License at
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+Unless required by applicable law or agreed to in writing, software
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diff --git a/vendor/cc/LICENSE-MIT b/vendor/cc/LICENSE-MIT
new file mode 100644
index 0000000..39e0ed6
--- /dev/null
+++ b/vendor/cc/LICENSE-MIT
@@ -0,0 +1,25 @@
+Copyright (c) 2014 Alex Crichton
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/vendor/cc/README.md b/vendor/cc/README.md
new file mode 100644
index 0000000..a58dc68
--- /dev/null
+++ b/vendor/cc/README.md
@@ -0,0 +1,233 @@
+# cc-rs
+
+A library to compile C/C++/assembly into a Rust library/application.
+
+[Documentation](https://docs.rs/cc)
+
+A simple library meant to be used as a build dependency with Cargo packages in
+order to build a set of C/C++ files into a static archive. This crate calls out
+to the most relevant compiler for a platform, for example using `cl` on MSVC.
+
+## Using cc-rs
+
+First, you'll want to both add a build script for your crate (`build.rs`) and
+also add this crate to your `Cargo.toml` via:
+
+```toml
+[build-dependencies]
+cc = "1.0"
+```
+
+Next up, you'll want to write a build script like so:
+
+```rust,no_run
+// build.rs
+
+fn main() {
+ cc::Build::new()
+ .file("foo.c")
+ .file("bar.c")
+ .compile("foo");
+}
+```
+
+And that's it! Running `cargo build` should take care of the rest and your Rust
+application will now have the C files `foo.c` and `bar.c` compiled into a file
+named `libfoo.a`. If the C files contain
+
+```c
+void foo_function(void) { ... }
+```
+
+and
+
+```c
+int32_t bar_function(int32_t x) { ... }
+```
+
+you can call them from Rust by declaring them in
+your Rust code like so:
+
+```rust,no_run
+extern "C" {
+ fn foo_function();
+ fn bar_function(x: i32) -> i32;
+}
+
+pub fn call() {
+ unsafe {
+ foo_function();
+ bar_function(42);
+ }
+}
+
+fn main() {
+ // ...
+}
+```
+
+See [the Rustonomicon](https://doc.rust-lang.org/nomicon/ffi.html) for more details.
+
+## External configuration via environment variables
+
+To control the programs and flags used for building, the builder can set a
+number of different environment variables.
+
+* `CFLAGS` - a series of space separated flags passed to compilers. Note that
+ individual flags cannot currently contain spaces, so doing
+ something like: `-L=foo\ bar` is not possible.
+* `CC` - the actual C compiler used. Note that this is used as an exact
+ executable name, so (for example) no extra flags can be passed inside
+ this variable, and the builder must ensure that there aren't any
+ trailing spaces. This compiler must understand the `-c` flag. For
+ certain `TARGET`s, it also is assumed to know about other flags (most
+ common is `-fPIC`).
+* `AR` - the `ar` (archiver) executable to use to build the static library.
+* `CRATE_CC_NO_DEFAULTS` - the default compiler flags may cause conflicts in
+ some cross compiling scenarios. Setting this variable
+ will disable the generation of default compiler
+ flags.
+* `CXX...` - see [C++ Support](#c-support).
+
+Furthermore, projects using this crate may specify custom environment variables
+to be inspected, for example via the `Build::try_flags_from_environment`
+function. Consult the project’s own documentation or its use of the `cc` crate
+for any additional variables it may use.
+
+Each of these variables can also be supplied with certain prefixes and suffixes,
+in the following prioritized order:
+
+1. `<var>_<target>` - for example, `CC_x86_64-unknown-linux-gnu`
+2. `<var>_<target_with_underscores>` - for example, `CC_x86_64_unknown_linux_gnu`
+3. `<build-kind>_<var>` - for example, `HOST_CC` or `TARGET_CFLAGS`
+4. `<var>` - a plain `CC`, `AR` as above.
+
+If none of these variables exist, cc-rs uses built-in defaults.
+
+In addition to the above optional environment variables, `cc-rs` has some
+functions with hard requirements on some variables supplied by [cargo's
+build-script driver][cargo] that it has the `TARGET`, `OUT_DIR`, `OPT_LEVEL`,
+and `HOST` variables.
+
+[cargo]: https://doc.rust-lang.org/cargo/reference/build-scripts.html#inputs-to-the-build-script
+
+## Optional features
+
+### Parallel
+
+Currently cc-rs supports parallel compilation (think `make -jN`) but this
+feature is turned off by default. To enable cc-rs to compile C/C++ in parallel,
+you can change your dependency to:
+
+```toml
+[build-dependencies]
+cc = { version = "1.0", features = ["parallel"] }
+```
+
+By default cc-rs will limit parallelism to `$NUM_JOBS`, or if not present it
+will limit it to the number of cpus on the machine. If you are using cargo,
+use `-jN` option of `build`, `test` and `run` commands as `$NUM_JOBS`
+is supplied by cargo.
+
+## Compile-time Requirements
+
+To work properly this crate needs access to a C compiler when the build script
+is being run. This crate does not ship a C compiler with it. The compiler
+required varies per platform, but there are three broad categories:
+
+* Unix platforms require `cc` to be the C compiler. This can be found by
+ installing cc/clang on Linux distributions and Xcode on macOS, for example.
+* Windows platforms targeting MSVC (e.g. your target triple ends in `-msvc`)
+ require Visual Studio to be installed. `cc-rs` attempts to locate it, and
+ if it fails, `cl.exe` is expected to be available in `PATH`. This can be
+ set up by running the appropriate developer tools shell.
+* Windows platforms targeting MinGW (e.g. your target triple ends in `-gnu`)
+ require `cc` to be available in `PATH`. We recommend the
+ [MinGW-w64](https://www.mingw-w64.org/) distribution, which is using the
+ [Win-builds](http://win-builds.org/) installation system.
+ You may also acquire it via
+ [MSYS2](https://www.msys2.org/), as explained [here][msys2-help]. Make sure
+ to install the appropriate architecture corresponding to your installation of
+ rustc. GCC from older [MinGW](http://www.mingw.org/) project is compatible
+ only with 32-bit rust compiler.
+
+[msys2-help]: https://github.com/rust-lang/rust#building-on-windows
+
+## C++ support
+
+`cc-rs` supports C++ libraries compilation by using the `cpp` method on
+`Build`:
+
+```rust,no_run
+fn main() {
+ cc::Build::new()
+ .cpp(true) // Switch to C++ library compilation.
+ .file("foo.cpp")
+ .compile("foo");
+}
+```
+
+For C++ libraries, the `CXX` and `CXXFLAGS` environment variables are used instead of `CC` and `CFLAGS`.
+
+The C++ standard library may be linked to the crate target. By default it's `libc++` for macOS, FreeBSD, and OpenBSD, `libc++_shared` for Android, nothing for MSVC, and `libstdc++` for anything else. It can be changed in one of two ways:
+
+1. by using the `cpp_link_stdlib` method on `Build`:
+ ```rust,no-run
+ fn main() {
+ cc::Build::new()
+ .cpp(true)
+ .file("foo.cpp")
+ .cpp_link_stdlib("stdc++") // use libstdc++
+ .compile("foo");
+ }
+ ```
+2. by setting the `CXXSTDLIB` environment variable.
+
+In particular, for Android you may want to [use `c++_static` if you have at most one shared library](https://developer.android.com/ndk/guides/cpp-support).
+
+Remember that C++ does name mangling so `extern "C"` might be required to enable Rust linker to find your functions.
+
+## CUDA C++ support
+
+`cc-rs` also supports compiling CUDA C++ libraries by using the `cuda` method
+on `Build`:
+
+```rust,no_run
+fn main() {
+ cc::Build::new()
+ // Switch to CUDA C++ library compilation using NVCC.
+ .cuda(true)
+ .cudart("static")
+ // Generate code for Maxwell (GTX 970, 980, 980 Ti, Titan X).
+ .flag("-gencode").flag("arch=compute_52,code=sm_52")
+ // Generate code for Maxwell (Jetson TX1).
+ .flag("-gencode").flag("arch=compute_53,code=sm_53")
+ // Generate code for Pascal (GTX 1070, 1080, 1080 Ti, Titan Xp).
+ .flag("-gencode").flag("arch=compute_61,code=sm_61")
+ // Generate code for Pascal (Tesla P100).
+ .flag("-gencode").flag("arch=compute_60,code=sm_60")
+ // Generate code for Pascal (Jetson TX2).
+ .flag("-gencode").flag("arch=compute_62,code=sm_62")
+ // Generate code in parallel
+ .flag("-t0")
+ .file("bar.cu")
+ .compile("bar");
+}
+```
+
+## License
+
+This project is licensed under either of
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
+ https://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license ([LICENSE-MIT](LICENSE-MIT) or
+ https://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in cc-rs by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.
diff --git a/vendor/cc/src/bin/gcc-shim.rs b/vendor/cc/src/bin/gcc-shim.rs
new file mode 100644
index 0000000..e5b5372
--- /dev/null
+++ b/vendor/cc/src/bin/gcc-shim.rs
@@ -0,0 +1,70 @@
+#![cfg_attr(test, allow(dead_code))]
+
+use std::env;
+use std::fs::File;
+use std::io::{self, prelude::*};
+use std::path::PathBuf;
+
+fn main() {
+ let mut args = env::args();
+ let program = args.next().expect("Unexpected empty args");
+
+ let out_dir = PathBuf::from(
+ env::var_os("GCCTEST_OUT_DIR")
+ .unwrap_or_else(|| panic!("{}: GCCTEST_OUT_DIR not found", program)),
+ );
+
+ // Find the first nonexistent candidate file to which the program's args can be written.
+ let candidate = (0..).find_map(|i| {
+ let candidate = out_dir.join(format!("out{}", i));
+
+ if candidate.exists() {
+ // If the file exists, commands have already run. Try again.
+ None
+ } else {
+ Some(candidate)
+ }
+ }).unwrap_or_else(|| panic!("Cannot find the first nonexistent candidate file to which the program's args can be written under out_dir '{}'", out_dir.display()));
+
+ // Create a file and record the args passed to the command.
+ let f = File::create(&candidate).unwrap_or_else(|e| {
+ panic!(
+ "{}: can't create candidate: {}, error: {}",
+ program,
+ candidate.display(),
+ e
+ )
+ });
+ let mut f = io::BufWriter::new(f);
+
+ (|| {
+ for arg in args {
+ writeln!(f, "{}", arg)?;
+ }
+
+ f.flush()?;
+
+ let mut f = f.into_inner()?;
+ f.flush()?;
+ f.sync_all()
+ })()
+ .unwrap_or_else(|e| {
+ panic!(
+ "{}: can't write to candidate: {}, error: {}",
+ program,
+ candidate.display(),
+ e
+ )
+ });
+
+ // Create a file used by some tests.
+ let path = &out_dir.join("libfoo.a");
+ File::create(path).unwrap_or_else(|e| {
+ panic!(
+ "{}: can't create libfoo.a: {}, error: {}",
+ program,
+ path.display(),
+ e
+ )
+ });
+}
diff --git a/vendor/cc/src/com.rs b/vendor/cc/src/com.rs
new file mode 100644
index 0000000..cd22844
--- /dev/null
+++ b/vendor/cc/src/com.rs
@@ -0,0 +1,156 @@
+// Copyright © 2017 winapi-rs developers
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
+// All files in the project carrying such notice may not be copied, modified, or distributed
+// except according to those terms.
+
+#![allow(unused)]
+
+use crate::{
+ winapi::{IUnknown, Interface},
+ windows_sys::{
+ CoInitializeEx, SysFreeString, SysStringLen, BSTR, COINIT_MULTITHREADED, HRESULT, S_FALSE,
+ S_OK,
+ },
+};
+use std::{
+ ffi::{OsStr, OsString},
+ mem::ManuallyDrop,
+ ops::Deref,
+ os::windows::ffi::{OsStrExt, OsStringExt},
+ ptr::{null, null_mut},
+ slice::from_raw_parts,
+};
+
+pub fn initialize() -> Result<(), HRESULT> {
+ let err = unsafe { CoInitializeEx(null(), COINIT_MULTITHREADED) };
+ if err != S_OK && err != S_FALSE {
+ // S_FALSE just means COM is already initialized
+ Err(err)
+ } else {
+ Ok(())
+ }
+}
+
+pub struct ComPtr<T>(*mut T)
+where
+ T: Interface;
+impl<T> ComPtr<T>
+where
+ T: Interface,
+{
+ /// Creates a `ComPtr` to wrap a raw pointer.
+ /// It takes ownership over the pointer which means it does __not__ call `AddRef`.
+ /// `T` __must__ be a COM interface that inherits from `IUnknown`.
+ pub unsafe fn from_raw(ptr: *mut T) -> ComPtr<T> {
+ assert!(!ptr.is_null());
+ ComPtr(ptr)
+ }
+ /// Casts up the inheritance chain
+ pub fn up<U>(self) -> ComPtr<U>
+ where
+ T: Deref<Target = U>,
+ U: Interface,
+ {
+ ComPtr(self.into_raw() as *mut U)
+ }
+ /// Extracts the raw pointer.
+ /// You are now responsible for releasing it yourself.
+ pub fn into_raw(self) -> *mut T {
+ ManuallyDrop::new(self).0
+ }
+ /// For internal use only.
+ fn as_unknown(&self) -> &IUnknown {
+ unsafe { &*(self.0 as *mut IUnknown) }
+ }
+ /// Performs QueryInterface fun.
+ pub fn cast<U>(&self) -> Result<ComPtr<U>, i32>
+ where
+ U: Interface,
+ {
+ let mut obj = null_mut();
+ let err = unsafe { self.as_unknown().QueryInterface(&U::uuidof(), &mut obj) };
+ if err < 0 {
+ return Err(err);
+ }
+ Ok(unsafe { ComPtr::from_raw(obj as *mut U) })
+ }
+}
+impl<T> Deref for ComPtr<T>
+where
+ T: Interface,
+{
+ type Target = T;
+ fn deref(&self) -> &T {
+ unsafe { &*self.0 }
+ }
+}
+impl<T> Clone for ComPtr<T>
+where
+ T: Interface,
+{
+ fn clone(&self) -> Self {
+ unsafe {
+ self.as_unknown().AddRef();
+ ComPtr::from_raw(self.0)
+ }
+ }
+}
+impl<T> Drop for ComPtr<T>
+where
+ T: Interface,
+{
+ fn drop(&mut self) {
+ unsafe {
+ self.as_unknown().Release();
+ }
+ }
+}
+pub struct BStr(BSTR);
+impl BStr {
+ pub unsafe fn from_raw(s: BSTR) -> BStr {
+ BStr(s)
+ }
+ pub fn to_osstring(&self) -> OsString {
+ let len = unsafe { SysStringLen(self.0) };
+ let slice = unsafe { from_raw_parts(self.0, len as usize) };
+ OsStringExt::from_wide(slice)
+ }
+}
+impl Drop for BStr {
+ fn drop(&mut self) {
+ unsafe { SysFreeString(self.0) };
+ }
+}
+
+pub trait ToWide {
+ fn to_wide(&self) -> Vec<u16>;
+ fn to_wide_null(&self) -> Vec<u16>;
+}
+impl<T> ToWide for T
+where
+ T: AsRef<OsStr>,
+{
+ fn to_wide(&self) -> Vec<u16> {
+ self.as_ref().encode_wide().collect()
+ }
+ fn to_wide_null(&self) -> Vec<u16> {
+ self.as_ref().encode_wide().chain(Some(0)).collect()
+ }
+}
+pub trait FromWide
+where
+ Self: Sized,
+{
+ fn from_wide(wide: &[u16]) -> Self;
+ fn from_wide_null(wide: &[u16]) -> Self {
+ let len = wide.iter().take_while(|&&c| c != 0).count();
+ Self::from_wide(&wide[..len])
+ }
+}
+impl FromWide for OsString {
+ fn from_wide(wide: &[u16]) -> OsString {
+ OsStringExt::from_wide(wide)
+ }
+}
diff --git a/vendor/cc/src/lib.rs b/vendor/cc/src/lib.rs
new file mode 100644
index 0000000..2fe30b9
--- /dev/null
+++ b/vendor/cc/src/lib.rs
@@ -0,0 +1,4024 @@
+//! A library for build scripts to compile custom C code
+//!
+//! This library is intended to be used as a `build-dependencies` entry in
+//! `Cargo.toml`:
+//!
+//! ```toml
+//! [build-dependencies]
+//! cc = "1.0"
+//! ```
+//!
+//! The purpose of this crate is to provide the utility functions necessary to
+//! compile C code into a static archive which is then linked into a Rust crate.
+//! Configuration is available through the `Build` struct.
+//!
+//! This crate will automatically detect situations such as cross compilation or
+//! other environment variables set by Cargo and will build code appropriately.
+//!
+//! The crate is not limited to C code, it can accept any source code that can
+//! be passed to a C or C++ compiler. As such, assembly files with extensions
+//! `.s` (gcc/clang) and `.asm` (MSVC) can also be compiled.
+//!
+//! [`Build`]: struct.Build.html
+//!
+//! # Parallelism
+//!
+//! To parallelize computation, enable the `parallel` feature for the crate.
+//!
+//! ```toml
+//! [build-dependencies]
+//! cc = { version = "1.0", features = ["parallel"] }
+//! ```
+//! To specify the max number of concurrent compilation jobs, set the `NUM_JOBS`
+//! environment variable to the desired amount.
+//!
+//! Cargo will also set this environment variable when executed with the `-jN` flag.
+//!
+//! # Examples
+//!
+//! Use the `Build` struct to compile `src/foo.c`:
+//!
+//! ```no_run
+//! fn main() {
+//! cc::Build::new()
+//! .file("src/foo.c")
+//! .define("FOO", Some("bar"))
+//! .include("src")
+//! .compile("foo");
+//! }
+//! ```
+
+#![doc(html_root_url = "https://docs.rs/cc/1.0")]
+#![cfg_attr(test, deny(warnings))]
+#![allow(deprecated)]
+#![deny(missing_docs)]
+
+use std::borrow::Cow;
+use std::collections::{hash_map, HashMap};
+use std::env;
+use std::ffi::{OsStr, OsString};
+use std::fmt::{self, Display, Formatter};
+use std::fs::{self, File};
+use std::hash::Hasher;
+use std::io::{self, BufRead, BufReader, Read, Write};
+use std::path::{Component, Path, PathBuf};
+use std::process::{Child, Command, Stdio};
+use std::sync::{Arc, Mutex};
+use std::thread::{self, JoinHandle};
+
+mod os_pipe;
+
+// These modules are all glue to support reading the MSVC version from
+// the registry and from COM interfaces
+#[cfg(windows)]
+mod registry;
+#[cfg(windows)]
+#[macro_use]
+mod winapi;
+#[cfg(windows)]
+mod com;
+#[cfg(windows)]
+mod setup_config;
+#[cfg(windows)]
+mod vs_instances;
+#[cfg(windows)]
+mod windows_sys;
+
+pub mod windows_registry;
+
+/// A builder for compilation of a native library.
+///
+/// A `Build` is the main type of the `cc` crate and is used to control all the
+/// various configuration options and such of a compile. You'll find more
+/// documentation on each method itself.
+#[derive(Clone, Debug)]
+pub struct Build {
+ include_directories: Vec<Arc<Path>>,
+ definitions: Vec<(Arc<str>, Option<Arc<str>>)>,
+ objects: Vec<Arc<Path>>,
+ flags: Vec<Arc<str>>,
+ flags_supported: Vec<Arc<str>>,
+ known_flag_support_status: Arc<Mutex<HashMap<String, bool>>>,
+ ar_flags: Vec<Arc<str>>,
+ asm_flags: Vec<Arc<str>>,
+ no_default_flags: bool,
+ files: Vec<Arc<Path>>,
+ cpp: bool,
+ cpp_link_stdlib: Option<Option<Arc<str>>>,
+ cpp_set_stdlib: Option<Arc<str>>,
+ cuda: bool,
+ cudart: Option<Arc<str>>,
+ std: Option<Arc<str>>,
+ target: Option<Arc<str>>,
+ host: Option<Arc<str>>,
+ out_dir: Option<Arc<Path>>,
+ opt_level: Option<Arc<str>>,
+ debug: Option<bool>,
+ force_frame_pointer: Option<bool>,
+ env: Vec<(Arc<OsStr>, Arc<OsStr>)>,
+ compiler: Option<Arc<Path>>,
+ archiver: Option<Arc<Path>>,
+ ranlib: Option<Arc<Path>>,
+ cargo_metadata: bool,
+ link_lib_modifiers: Vec<Arc<str>>,
+ pic: Option<bool>,
+ use_plt: Option<bool>,
+ static_crt: Option<bool>,
+ shared_flag: Option<bool>,
+ static_flag: Option<bool>,
+ warnings_into_errors: bool,
+ warnings: Option<bool>,
+ extra_warnings: Option<bool>,
+ env_cache: Arc<Mutex<HashMap<String, Option<Arc<str>>>>>,
+ apple_sdk_root_cache: Arc<Mutex<HashMap<String, OsString>>>,
+ emit_rerun_if_env_changed: bool,
+}
+
+/// Represents the types of errors that may occur while using cc-rs.
+#[derive(Clone, Debug)]
+enum ErrorKind {
+ /// Error occurred while performing I/O.
+ IOError,
+ /// Invalid architecture supplied.
+ ArchitectureInvalid,
+ /// Environment variable not found, with the var in question as extra info.
+ EnvVarNotFound,
+ /// Error occurred while using external tools (ie: invocation of compiler).
+ ToolExecError,
+ /// Error occurred due to missing external tools.
+ ToolNotFound,
+ /// One of the function arguments failed validation.
+ InvalidArgument,
+}
+
+/// Represents an internal error that occurred, with an explanation.
+#[derive(Clone, Debug)]
+pub struct Error {
+ /// Describes the kind of error that occurred.
+ kind: ErrorKind,
+ /// More explanation of error that occurred.
+ message: Cow<'static, str>,
+}
+
+impl Error {
+ fn new(kind: ErrorKind, message: impl Into<Cow<'static, str>>) -> Error {
+ Error {
+ kind,
+ message: message.into(),
+ }
+ }
+}
+
+impl From<io::Error> for Error {
+ fn from(e: io::Error) -> Error {
+ Error::new(ErrorKind::IOError, format!("{}", e))
+ }
+}
+
+impl Display for Error {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ write!(f, "{:?}: {}", self.kind, self.message)
+ }
+}
+
+impl std::error::Error for Error {}
+
+/// Configuration used to represent an invocation of a C compiler.
+///
+/// This can be used to figure out what compiler is in use, what the arguments
+/// to it are, and what the environment variables look like for the compiler.
+/// This can be used to further configure other build systems (e.g. forward
+/// along CC and/or CFLAGS) or the `to_command` method can be used to run the
+/// compiler itself.
+#[derive(Clone, Debug)]
+pub struct Tool {
+ path: PathBuf,
+ cc_wrapper_path: Option<PathBuf>,
+ cc_wrapper_args: Vec<OsString>,
+ args: Vec<OsString>,
+ env: Vec<(OsString, OsString)>,
+ family: ToolFamily,
+ cuda: bool,
+ removed_args: Vec<OsString>,
+}
+
+/// Represents the family of tools this tool belongs to.
+///
+/// Each family of tools differs in how and what arguments they accept.
+///
+/// Detection of a family is done on best-effort basis and may not accurately reflect the tool.
+#[derive(Copy, Clone, Debug, PartialEq)]
+enum ToolFamily {
+ /// Tool is GNU Compiler Collection-like.
+ Gnu,
+ /// Tool is Clang-like. It differs from the GCC in a sense that it accepts superset of flags
+ /// and its cross-compilation approach is different.
+ Clang,
+ /// Tool is the MSVC cl.exe.
+ Msvc { clang_cl: bool },
+}
+
+impl ToolFamily {
+ /// What the flag to request debug info for this family of tools look like
+ fn add_debug_flags(&self, cmd: &mut Tool, dwarf_version: Option<u32>) {
+ match *self {
+ ToolFamily::Msvc { .. } => {
+ cmd.push_cc_arg("-Z7".into());
+ }
+ ToolFamily::Gnu | ToolFamily::Clang => {
+ cmd.push_cc_arg(
+ dwarf_version
+ .map_or_else(|| "-g".into(), |v| format!("-gdwarf-{}", v))
+ .into(),
+ );
+ }
+ }
+ }
+
+ /// What the flag to force frame pointers.
+ fn add_force_frame_pointer(&self, cmd: &mut Tool) {
+ match *self {
+ ToolFamily::Gnu | ToolFamily::Clang => {
+ cmd.push_cc_arg("-fno-omit-frame-pointer".into());
+ }
+ _ => (),
+ }
+ }
+
+ /// What the flags to enable all warnings
+ fn warnings_flags(&self) -> &'static str {
+ match *self {
+ ToolFamily::Msvc { .. } => "-W4",
+ ToolFamily::Gnu | ToolFamily::Clang => "-Wall",
+ }
+ }
+
+ /// What the flags to enable extra warnings
+ fn extra_warnings_flags(&self) -> Option<&'static str> {
+ match *self {
+ ToolFamily::Msvc { .. } => None,
+ ToolFamily::Gnu | ToolFamily::Clang => Some("-Wextra"),
+ }
+ }
+
+ /// What the flag to turn warning into errors
+ fn warnings_to_errors_flag(&self) -> &'static str {
+ match *self {
+ ToolFamily::Msvc { .. } => "-WX",
+ ToolFamily::Gnu | ToolFamily::Clang => "-Werror",
+ }
+ }
+
+ fn verbose_stderr(&self) -> bool {
+ *self == ToolFamily::Clang
+ }
+}
+
+/// Represents an object.
+///
+/// This is a source file -> object file pair.
+#[derive(Clone, Debug)]
+struct Object {
+ src: PathBuf,
+ dst: PathBuf,
+}
+
+impl Object {
+ /// Create a new source file -> object file pair.
+ fn new(src: PathBuf, dst: PathBuf) -> Object {
+ Object { src: src, dst: dst }
+ }
+}
+
+impl Build {
+ /// Construct a new instance of a blank set of configuration.
+ ///
+ /// This builder is finished with the [`compile`] function.
+ ///
+ /// [`compile`]: struct.Build.html#method.compile
+ pub fn new() -> Build {
+ Build {
+ include_directories: Vec::new(),
+ definitions: Vec::new(),
+ objects: Vec::new(),
+ flags: Vec::new(),
+ flags_supported: Vec::new(),
+ known_flag_support_status: Arc::new(Mutex::new(HashMap::new())),
+ ar_flags: Vec::new(),
+ asm_flags: Vec::new(),
+ no_default_flags: false,
+ files: Vec::new(),
+ shared_flag: None,
+ static_flag: None,
+ cpp: false,
+ cpp_link_stdlib: None,
+ cpp_set_stdlib: None,
+ cuda: false,
+ cudart: None,
+ std: None,
+ target: None,
+ host: None,
+ out_dir: None,
+ opt_level: None,
+ debug: None,
+ force_frame_pointer: None,
+ env: Vec::new(),
+ compiler: None,
+ archiver: None,
+ ranlib: None,
+ cargo_metadata: true,
+ link_lib_modifiers: Vec::new(),
+ pic: None,
+ use_plt: None,
+ static_crt: None,
+ warnings: None,
+ extra_warnings: None,
+ warnings_into_errors: false,
+ env_cache: Arc::new(Mutex::new(HashMap::new())),
+ apple_sdk_root_cache: Arc::new(Mutex::new(HashMap::new())),
+ emit_rerun_if_env_changed: true,
+ }
+ }
+
+ /// Add a directory to the `-I` or include path for headers
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// use std::path::Path;
+ ///
+ /// let library_path = Path::new("/path/to/library");
+ ///
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .include(library_path)
+ /// .include("src")
+ /// .compile("foo");
+ /// ```
+ pub fn include<P: AsRef<Path>>(&mut self, dir: P) -> &mut Build {
+ self.include_directories.push(dir.as_ref().into());
+ self
+ }
+
+ /// Add multiple directories to the `-I` include path.
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// # use std::path::Path;
+ /// # let condition = true;
+ /// #
+ /// let mut extra_dir = None;
+ /// if condition {
+ /// extra_dir = Some(Path::new("/path/to"));
+ /// }
+ ///
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .includes(extra_dir)
+ /// .compile("foo");
+ /// ```
+ pub fn includes<P>(&mut self, dirs: P) -> &mut Build
+ where
+ P: IntoIterator,
+ P::Item: AsRef<Path>,
+ {
+ for dir in dirs {
+ self.include(dir);
+ }
+ self
+ }
+
+ /// Specify a `-D` variable with an optional value.
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .define("FOO", "BAR")
+ /// .define("BAZ", None)
+ /// .compile("foo");
+ /// ```
+ pub fn define<'a, V: Into<Option<&'a str>>>(&mut self, var: &str, val: V) -> &mut Build {
+ self.definitions
+ .push((var.into(), val.into().map(Into::into)));
+ self
+ }
+
+ /// Add an arbitrary object file to link in
+ pub fn object<P: AsRef<Path>>(&mut self, obj: P) -> &mut Build {
+ self.objects.push(obj.as_ref().into());
+ self
+ }
+
+ /// Add an arbitrary flag to the invocation of the compiler
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .flag("-ffunction-sections")
+ /// .compile("foo");
+ /// ```
+ pub fn flag(&mut self, flag: &str) -> &mut Build {
+ self.flags.push(flag.into());
+ self
+ }
+
+ /// Add a flag to the invocation of the ar
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .file("src/bar.c")
+ /// .ar_flag("/NODEFAULTLIB:libc.dll")
+ /// .compile("foo");
+ /// ```
+ pub fn ar_flag(&mut self, flag: &str) -> &mut Build {
+ self.ar_flags.push(flag.into());
+ self
+ }
+
+ /// Add a flag that will only be used with assembly files.
+ ///
+ /// The flag will be applied to input files with either a `.s` or
+ /// `.asm` extension (case insensitive).
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .asm_flag("-Wa,-defsym,abc=1")
+ /// .file("src/foo.S") // The asm flag will be applied here
+ /// .file("src/bar.c") // The asm flag will not be applied here
+ /// .compile("foo");
+ /// ```
+ pub fn asm_flag(&mut self, flag: &str) -> &mut Build {
+ self.asm_flags.push(flag.into());
+ self
+ }
+
+ fn ensure_check_file(&self) -> Result<PathBuf, Error> {
+ let out_dir = self.get_out_dir()?;
+ let src = if self.cuda {
+ assert!(self.cpp);
+ out_dir.join("flag_check.cu")
+ } else if self.cpp {
+ out_dir.join("flag_check.cpp")
+ } else {
+ out_dir.join("flag_check.c")
+ };
+
+ if !src.exists() {
+ let mut f = fs::File::create(&src)?;
+ write!(f, "int main(void) {{ return 0; }}")?;
+ }
+
+ Ok(src)
+ }
+
+ /// Run the compiler to test if it accepts the given flag.
+ ///
+ /// For a convenience method for setting flags conditionally,
+ /// see `flag_if_supported()`.
+ ///
+ /// It may return error if it's unable to run the compiler with a test file
+ /// (e.g. the compiler is missing or a write to the `out_dir` failed).
+ ///
+ /// Note: Once computed, the result of this call is stored in the
+ /// `known_flag_support` field. If `is_flag_supported(flag)`
+ /// is called again, the result will be read from the hash table.
+ pub fn is_flag_supported(&self, flag: &str) -> Result<bool, Error> {
+ let mut known_status = self.known_flag_support_status.lock().unwrap();
+ if let Some(is_supported) = known_status.get(flag).cloned() {
+ return Ok(is_supported);
+ }
+
+ let out_dir = self.get_out_dir()?;
+ let src = self.ensure_check_file()?;
+ let obj = out_dir.join("flag_check");
+ let target = self.get_target()?;
+ let host = self.get_host()?;
+ let mut cfg = Build::new();
+ cfg.flag(flag)
+ .target(&target)
+ .opt_level(0)
+ .host(&host)
+ .debug(false)
+ .cpp(self.cpp)
+ .cuda(self.cuda);
+ if let Some(ref c) = self.compiler {
+ cfg.compiler(c.clone());
+ }
+ let mut compiler = cfg.try_get_compiler()?;
+
+ // Clang uses stderr for verbose output, which yields a false positive
+ // result if the CFLAGS/CXXFLAGS include -v to aid in debugging.
+ if compiler.family.verbose_stderr() {
+ compiler.remove_arg("-v".into());
+ }
+
+ let mut cmd = compiler.to_command();
+ let is_arm = target.contains("aarch64") || target.contains("arm");
+ let clang = compiler.family == ToolFamily::Clang;
+ let gnu = compiler.family == ToolFamily::Gnu;
+ command_add_output_file(
+ &mut cmd,
+ &obj,
+ self.cuda,
+ target.contains("msvc"),
+ clang,
+ gnu,
+ false,
+ is_arm,
+ );
+
+ // We need to explicitly tell msvc not to link and create an exe
+ // in the root directory of the crate
+ if target.contains("msvc") && !self.cuda {
+ cmd.arg("-c");
+ }
+
+ cmd.arg(&src);
+
+ let output = cmd.output()?;
+ let is_supported = output.status.success() && output.stderr.is_empty();
+
+ known_status.insert(flag.to_owned(), is_supported);
+ Ok(is_supported)
+ }
+
+ /// Add an arbitrary flag to the invocation of the compiler if it supports it
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .flag_if_supported("-Wlogical-op") // only supported by GCC
+ /// .flag_if_supported("-Wunreachable-code") // only supported by clang
+ /// .compile("foo");
+ /// ```
+ pub fn flag_if_supported(&mut self, flag: &str) -> &mut Build {
+ self.flags_supported.push(flag.into());
+ self
+ }
+
+ /// Add flags from the specified environment variable.
+ ///
+ /// Normally the `cc` crate will consult with the standard set of environment
+ /// variables (such as `CFLAGS` and `CXXFLAGS`) to construct the compiler invocation. Use of
+ /// this method provides additional levers for the end user to use when configuring the build
+ /// process.
+ ///
+ /// Just like the standard variables, this method will search for an environment variable with
+ /// appropriate target prefixes, when appropriate.
+ ///
+ /// # Examples
+ ///
+ /// This method is particularly beneficial in introducing the ability to specify crate-specific
+ /// flags.
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .try_flags_from_environment(concat!(env!("CARGO_PKG_NAME"), "_CFLAGS"))
+ /// .expect("the environment variable must be specified and UTF-8")
+ /// .compile("foo");
+ /// ```
+ ///
+ pub fn try_flags_from_environment(&mut self, environ_key: &str) -> Result<&mut Build, Error> {
+ let flags = self.envflags(environ_key)?;
+ self.flags.extend(flags.into_iter().map(Into::into));
+ Ok(self)
+ }
+
+ /// Set the `-shared` flag.
+ ///
+ /// When enabled, the compiler will produce a shared object which can
+ /// then be linked with other objects to form an executable.
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .shared_flag(true)
+ /// .compile("libfoo.so");
+ /// ```
+ pub fn shared_flag(&mut self, shared_flag: bool) -> &mut Build {
+ self.shared_flag = Some(shared_flag);
+ self
+ }
+
+ /// Set the `-static` flag.
+ ///
+ /// When enabled on systems that support dynamic linking, this prevents
+ /// linking with the shared libraries.
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .shared_flag(true)
+ /// .static_flag(true)
+ /// .compile("foo");
+ /// ```
+ pub fn static_flag(&mut self, static_flag: bool) -> &mut Build {
+ self.static_flag = Some(static_flag);
+ self
+ }
+
+ /// Disables the generation of default compiler flags. The default compiler
+ /// flags may cause conflicts in some cross compiling scenarios.
+ ///
+ /// Setting the `CRATE_CC_NO_DEFAULTS` environment variable has the same
+ /// effect as setting this to `true`. The presence of the environment
+ /// variable and the value of `no_default_flags` will be OR'd together.
+ pub fn no_default_flags(&mut self, no_default_flags: bool) -> &mut Build {
+ self.no_default_flags = no_default_flags;
+ self
+ }
+
+ /// Add a file which will be compiled
+ pub fn file<P: AsRef<Path>>(&mut self, p: P) -> &mut Build {
+ self.files.push(p.as_ref().into());
+ self
+ }
+
+ /// Add files which will be compiled
+ pub fn files<P>(&mut self, p: P) -> &mut Build
+ where
+ P: IntoIterator,
+ P::Item: AsRef<Path>,
+ {
+ for file in p.into_iter() {
+ self.file(file);
+ }
+ self
+ }
+
+ /// Set C++ support.
+ ///
+ /// The other `cpp_*` options will only become active if this is set to
+ /// `true`.
+ ///
+ /// The name of the C++ standard library to link is decided by:
+ /// 1. If [cpp_link_stdlib](Build::cpp_link_stdlib) is set, use its value.
+ /// 2. Else if the `CXXSTDLIB` environment variable is set, use its value.
+ /// 3. Else the default is `libc++` for OS X and BSDs, `libc++_shared` for Android,
+ /// `None` for MSVC and `libstdc++` for anything else.
+ pub fn cpp(&mut self, cpp: bool) -> &mut Build {
+ self.cpp = cpp;
+ self
+ }
+
+ /// Set CUDA C++ support.
+ ///
+ /// Enabling CUDA will invoke the CUDA compiler, NVCC. While NVCC accepts
+ /// the most common compiler flags, e.g. `-std=c++17`, some project-specific
+ /// flags might have to be prefixed with "-Xcompiler" flag, for example as
+ /// `.flag("-Xcompiler").flag("-fpermissive")`. See the documentation for
+ /// `nvcc`, the CUDA compiler driver, at https://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/
+ /// for more information.
+ ///
+ /// If enabled, this also implicitly enables C++ support.
+ pub fn cuda(&mut self, cuda: bool) -> &mut Build {
+ self.cuda = cuda;
+ if cuda {
+ self.cpp = true;
+ self.cudart = Some("static".into());
+ }
+ self
+ }
+
+ /// Link CUDA run-time.
+ ///
+ /// This option mimics the `--cudart` NVCC command-line option. Just like
+ /// the original it accepts `{none|shared|static}`, with default being
+ /// `static`. The method has to be invoked after `.cuda(true)`, or not
+ /// at all, if the default is right for the project.
+ pub fn cudart(&mut self, cudart: &str) -> &mut Build {
+ if self.cuda {
+ self.cudart = Some(cudart.into());
+ }
+ self
+ }
+
+ /// Specify the C or C++ language standard version.
+ ///
+ /// These values are common to modern versions of GCC, Clang and MSVC:
+ /// - `c11` for ISO/IEC 9899:2011
+ /// - `c17` for ISO/IEC 9899:2018
+ /// - `c++14` for ISO/IEC 14882:2014
+ /// - `c++17` for ISO/IEC 14882:2017
+ /// - `c++20` for ISO/IEC 14882:2020
+ ///
+ /// Other values have less broad support, e.g. MSVC does not support `c++11`
+ /// (`c++14` is the minimum), `c89` (omit the flag instead) or `c99`.
+ ///
+ /// For compiling C++ code, you should also set `.cpp(true)`.
+ ///
+ /// The default is that no standard flag is passed to the compiler, so the
+ /// language version will be the compiler's default.
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/modern.cpp")
+ /// .cpp(true)
+ /// .std("c++17")
+ /// .compile("modern");
+ /// ```
+ pub fn std(&mut self, std: &str) -> &mut Build {
+ self.std = Some(std.into());
+ self
+ }
+
+ /// Set warnings into errors flag.
+ ///
+ /// Disabled by default.
+ ///
+ /// Warning: turning warnings into errors only make sense
+ /// if you are a developer of the crate using cc-rs.
+ /// Some warnings only appear on some architecture or
+ /// specific version of the compiler. Any user of this crate,
+ /// or any other crate depending on it, could fail during
+ /// compile time.
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .warnings_into_errors(true)
+ /// .compile("libfoo.a");
+ /// ```
+ pub fn warnings_into_errors(&mut self, warnings_into_errors: bool) -> &mut Build {
+ self.warnings_into_errors = warnings_into_errors;
+ self
+ }
+
+ /// Set warnings flags.
+ ///
+ /// Adds some flags:
+ /// - "-Wall" for MSVC.
+ /// - "-Wall", "-Wextra" for GNU and Clang.
+ ///
+ /// Enabled by default.
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .warnings(false)
+ /// .compile("libfoo.a");
+ /// ```
+ pub fn warnings(&mut self, warnings: bool) -> &mut Build {
+ self.warnings = Some(warnings);
+ self.extra_warnings = Some(warnings);
+ self
+ }
+
+ /// Set extra warnings flags.
+ ///
+ /// Adds some flags:
+ /// - nothing for MSVC.
+ /// - "-Wextra" for GNU and Clang.
+ ///
+ /// Enabled by default.
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// // Disables -Wextra, -Wall remains enabled:
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .extra_warnings(false)
+ /// .compile("libfoo.a");
+ /// ```
+ pub fn extra_warnings(&mut self, warnings: bool) -> &mut Build {
+ self.extra_warnings = Some(warnings);
+ self
+ }
+
+ /// Set the standard library to link against when compiling with C++
+ /// support.
+ ///
+ /// If the `CXXSTDLIB` environment variable is set, its value will
+ /// override the default value, but not the value explicitly set by calling
+ /// this function.
+ ///
+ /// A value of `None` indicates that no automatic linking should happen,
+ /// otherwise cargo will link against the specified library.
+ ///
+ /// The given library name must not contain the `lib` prefix.
+ ///
+ /// Common values:
+ /// - `stdc++` for GNU
+ /// - `c++` for Clang
+ /// - `c++_shared` or `c++_static` for Android
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .shared_flag(true)
+ /// .cpp_link_stdlib("stdc++")
+ /// .compile("libfoo.so");
+ /// ```
+ pub fn cpp_link_stdlib<'a, V: Into<Option<&'a str>>>(
+ &mut self,
+ cpp_link_stdlib: V,
+ ) -> &mut Build {
+ self.cpp_link_stdlib = Some(cpp_link_stdlib.into().map(|s| s.into()));
+ self
+ }
+
+ /// Force the C++ compiler to use the specified standard library.
+ ///
+ /// Setting this option will automatically set `cpp_link_stdlib` to the same
+ /// value.
+ ///
+ /// The default value of this option is always `None`.
+ ///
+ /// This option has no effect when compiling for a Visual Studio based
+ /// target.
+ ///
+ /// This option sets the `-stdlib` flag, which is only supported by some
+ /// compilers (clang, icc) but not by others (gcc). The library will not
+ /// detect which compiler is used, as such it is the responsibility of the
+ /// caller to ensure that this option is only used in conjunction with a
+ /// compiler which supports the `-stdlib` flag.
+ ///
+ /// A value of `None` indicates that no specific C++ standard library should
+ /// be used, otherwise `-stdlib` is added to the compile invocation.
+ ///
+ /// The given library name must not contain the `lib` prefix.
+ ///
+ /// Common values:
+ /// - `stdc++` for GNU
+ /// - `c++` for Clang
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .cpp_set_stdlib("c++")
+ /// .compile("libfoo.a");
+ /// ```
+ pub fn cpp_set_stdlib<'a, V: Into<Option<&'a str>>>(
+ &mut self,
+ cpp_set_stdlib: V,
+ ) -> &mut Build {
+ let cpp_set_stdlib = cpp_set_stdlib.into();
+ self.cpp_set_stdlib = cpp_set_stdlib.map(|s| s.into());
+ self.cpp_link_stdlib(cpp_set_stdlib);
+ self
+ }
+
+ /// Configures the target this configuration will be compiling for.
+ ///
+ /// This option is automatically scraped from the `TARGET` environment
+ /// variable by build scripts, so it's not required to call this function.
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .target("aarch64-linux-android")
+ /// .compile("foo");
+ /// ```
+ pub fn target(&mut self, target: &str) -> &mut Build {
+ self.target = Some(target.into());
+ self
+ }
+
+ /// Configures the host assumed by this configuration.
+ ///
+ /// This option is automatically scraped from the `HOST` environment
+ /// variable by build scripts, so it's not required to call this function.
+ ///
+ /// # Example
+ ///
+ /// ```no_run
+ /// cc::Build::new()
+ /// .file("src/foo.c")
+ /// .host("arm-linux-gnueabihf")
+ /// .compile("foo");
+ /// ```
+ pub fn host(&mut self, host: &str) -> &mut Build {
+ self.host = Some(host.into());
+ self
+ }
+
+ /// Configures the optimization level of the generated object files.
+ ///
+ /// This option is automatically scraped from the `OPT_LEVEL` environment
+ /// variable by build scripts, so it's not required to call this function.
+ pub fn opt_level(&mut self, opt_level: u32) -> &mut Build {
+ self.opt_level = Some(opt_level.to_string().into());
+ self
+ }
+
+ /// Configures the optimization level of the generated object files.
+ ///
+ /// This option is automatically scraped from the `OPT_LEVEL` environment
+ /// variable by build scripts, so it's not required to call this function.
+ pub fn opt_level_str(&mut self, opt_level: &str) -> &mut Build {
+ self.opt_level = Some(opt_level.into());
+ self
+ }
+
+ /// Configures whether the compiler will emit debug information when
+ /// generating object files.
+ ///
+ /// This option is automatically scraped from the `DEBUG` environment
+ /// variable by build scripts, so it's not required to call this function.
+ pub fn debug(&mut self, debug: bool) -> &mut Build {
+ self.debug = Some(debug);
+ self
+ }
+
+ /// Configures whether the compiler will emit instructions to store
+ /// frame pointers during codegen.
+ ///
+ /// This option is automatically enabled when debug information is emitted.
+ /// Otherwise the target platform compiler's default will be used.
+ /// You can use this option to force a specific setting.
+ pub fn force_frame_pointer(&mut self, force: bool) -> &mut Build {
+ self.force_frame_pointer = Some(force);
+ self
+ }
+
+ /// Configures the output directory where all object files and static
+ /// libraries will be located.
+ ///
+ /// This option is automatically scraped from the `OUT_DIR` environment
+ /// variable by build scripts, so it's not required to call this function.
+ pub fn out_dir<P: AsRef<Path>>(&mut self, out_dir: P) -> &mut Build {
+ self.out_dir = Some(out_dir.as_ref().into());
+ self
+ }
+
+ /// Configures the compiler to be used to produce output.
+ ///
+ /// This option is automatically determined from the target platform or a
+ /// number of environment variables, so it's not required to call this
+ /// function.
+ pub fn compiler<P: AsRef<Path>>(&mut self, compiler: P) -> &mut Build {
+ self.compiler = Some(compiler.as_ref().into());
+ self
+ }
+
+ /// Configures the tool used to assemble archives.
+ ///
+ /// This option is automatically determined from the target platform or a
+ /// number of environment variables, so it's not required to call this
+ /// function.
+ pub fn archiver<P: AsRef<Path>>(&mut self, archiver: P) -> &mut Build {
+ self.archiver = Some(archiver.as_ref().into());
+ self
+ }
+
+ /// Configures the tool used to index archives.
+ ///
+ /// This option is automatically determined from the target platform or a
+ /// number of environment variables, so it's not required to call this
+ /// function.
+ pub fn ranlib<P: AsRef<Path>>(&mut self, ranlib: P) -> &mut Build {
+ self.ranlib = Some(ranlib.as_ref().into());
+ self
+ }
+
+ /// Define whether metadata should be emitted for cargo allowing it to
+ /// automatically link the binary. Defaults to `true`.
+ ///
+ /// The emitted metadata is:
+ ///
+ /// - `rustc-link-lib=static=`*compiled lib*
+ /// - `rustc-link-search=native=`*target folder*
+ /// - When target is MSVC, the ATL-MFC libs are added via `rustc-link-search=native=`
+ /// - When C++ is enabled, the C++ stdlib is added via `rustc-link-lib`
+ /// - If `emit_rerun_if_env_changed` is not `false`, `rerun-if-env-changed=`*env*
+ ///
+ pub fn cargo_metadata(&mut self, cargo_metadata: bool) -> &mut Build {
+ self.cargo_metadata = cargo_metadata;
+ self
+ }
+
+ /// Adds a native library modifier that will be added to the
+ /// `rustc-link-lib=static:MODIFIERS=LIBRARY_NAME` metadata line
+ /// emitted for cargo if `cargo_metadata` is enabled.
+ /// See https://doc.rust-lang.org/rustc/command-line-arguments.html#-l-link-the-generated-crate-to-a-native-library
+ /// for the list of modifiers accepted by rustc.
+ pub fn link_lib_modifier(&mut self, link_lib_modifier: &str) -> &mut Build {
+ self.link_lib_modifiers.push(link_lib_modifier.into());
+ self
+ }
+
+ /// Configures whether the compiler will emit position independent code.
+ ///
+ /// This option defaults to `false` for `windows-gnu` and bare metal targets and
+ /// to `true` for all other targets.
+ pub fn pic(&mut self, pic: bool) -> &mut Build {
+ self.pic = Some(pic);
+ self
+ }
+
+ /// Configures whether the Procedure Linkage Table is used for indirect
+ /// calls into shared libraries.
+ ///
+ /// The PLT is used to provide features like lazy binding, but introduces
+ /// a small performance loss due to extra pointer indirection. Setting
+ /// `use_plt` to `false` can provide a small performance increase.
+ ///
+ /// Note that skipping the PLT requires a recent version of GCC/Clang.
+ ///
+ /// This only applies to ELF targets. It has no effect on other platforms.
+ pub fn use_plt(&mut self, use_plt: bool) -> &mut Build {
+ self.use_plt = Some(use_plt);
+ self
+ }
+
+ /// Define whether metadata should be emitted for cargo to detect environment
+ /// changes that should trigger a rebuild.
+ ///
+ /// This has no effect if the `cargo_metadata` option is `false`.
+ ///
+ /// This option defaults to `true`.
+ pub fn emit_rerun_if_env_changed(&mut self, emit_rerun_if_env_changed: bool) -> &mut Build {
+ self.emit_rerun_if_env_changed = emit_rerun_if_env_changed;
+ self
+ }
+
+ /// Configures whether the /MT flag or the /MD flag will be passed to msvc build tools.
+ ///
+ /// This option defaults to `false`, and affect only msvc targets.
+ pub fn static_crt(&mut self, static_crt: bool) -> &mut Build {
+ self.static_crt = Some(static_crt);
+ self
+ }
+
+ #[doc(hidden)]
+ pub fn __set_env<A, B>(&mut self, a: A, b: B) -> &mut Build
+ where
+ A: AsRef<OsStr>,
+ B: AsRef<OsStr>,
+ {
+ self.env.push((a.as_ref().into(), b.as_ref().into()));
+ self
+ }
+
+ /// Run the compiler, generating the file `output`
+ ///
+ /// This will return a result instead of panicing; see compile() for the complete description.
+ pub fn try_compile(&self, output: &str) -> Result<(), Error> {
+ let mut output_components = Path::new(output).components();
+ match (output_components.next(), output_components.next()) {
+ (Some(Component::Normal(_)), None) => {}
+ _ => {
+ return Err(Error::new(
+ ErrorKind::InvalidArgument,
+ "argument of `compile` must be a single normal path component",
+ ));
+ }
+ }
+
+ let (lib_name, gnu_lib_name) = if output.starts_with("lib") && output.ends_with(".a") {
+ (&output[3..output.len() - 2], output.to_owned())
+ } else {
+ let mut gnu = String::with_capacity(5 + output.len());
+ gnu.push_str("lib");
+ gnu.push_str(&output);
+ gnu.push_str(".a");
+ (output, gnu)
+ };
+ let dst = self.get_out_dir()?;
+
+ let mut objects = Vec::new();
+ for file in self.files.iter() {
+ let obj = if file.has_root() || file.components().any(|x| x == Component::ParentDir) {
+ // If `file` is an absolute path or might not be usable directly as a suffix due to
+ // using "..", use the `basename` prefixed with the `dirname`'s hash to ensure name
+ // uniqueness.
+ let basename = file
+ .file_name()
+ .ok_or_else(|| Error::new(ErrorKind::InvalidArgument, "file_name() failure"))?
+ .to_string_lossy();
+ let dirname = file
+ .parent()
+ .ok_or_else(|| Error::new(ErrorKind::InvalidArgument, "parent() failure"))?
+ .to_string_lossy();
+ let mut hasher = hash_map::DefaultHasher::new();
+ hasher.write(dirname.to_string().as_bytes());
+ dst.join(format!("{:016x}-{}", hasher.finish(), basename))
+ .with_extension("o")
+ } else {
+ dst.join(file).with_extension("o")
+ };
+ let obj = if !obj.starts_with(&dst) {
+ dst.join(obj.file_name().ok_or_else(|| {
+ Error::new(ErrorKind::IOError, "Getting object file details failed.")
+ })?)
+ } else {
+ obj
+ };
+
+ match obj.parent() {
+ Some(s) => fs::create_dir_all(s)?,
+ None => {
+ return Err(Error::new(
+ ErrorKind::IOError,
+ "Getting object file details failed.",
+ ));
+ }
+ };
+
+ objects.push(Object::new(file.to_path_buf(), obj));
+ }
+
+ let print = PrintThread::new()?;
+
+ self.compile_objects(&objects, &print)?;
+ self.assemble(lib_name, &dst.join(gnu_lib_name), &objects, &print)?;
+
+ if self.get_target()?.contains("msvc") {
+ let compiler = self.get_base_compiler()?;
+ let atlmfc_lib = compiler
+ .env()
+ .iter()
+ .find(|&&(ref var, _)| var.as_os_str() == OsStr::new("LIB"))
+ .and_then(|&(_, ref lib_paths)| {
+ env::split_paths(lib_paths).find(|path| {
+ let sub = Path::new("atlmfc/lib");
+ path.ends_with(sub) || path.parent().map_or(false, |p| p.ends_with(sub))
+ })
+ });
+
+ if let Some(atlmfc_lib) = atlmfc_lib {
+ self.print(&format_args!(
+ "cargo:rustc-link-search=native={}",
+ atlmfc_lib.display()
+ ));
+ }
+ }
+
+ if self.link_lib_modifiers.is_empty() {
+ self.print(&format_args!("cargo:rustc-link-lib=static={}", lib_name));
+ } else {
+ let m = self.link_lib_modifiers.join(",");
+ self.print(&format_args!(
+ "cargo:rustc-link-lib=static:{}={}",
+ m, lib_name
+ ));
+ }
+ self.print(&format_args!(
+ "cargo:rustc-link-search=native={}",
+ dst.display()
+ ));
+
+ // Add specific C++ libraries, if enabled.
+ if self.cpp {
+ if let Some(stdlib) = self.get_cpp_link_stdlib()? {
+ self.print(&format_args!("cargo:rustc-link-lib={}", stdlib));
+ }
+ }
+
+ let cudart = match &self.cudart {
+ Some(opt) => &*opt, // {none|shared|static}
+ None => "none",
+ };
+ if cudart != "none" {
+ if let Some(nvcc) = which(&self.get_compiler().path, None) {
+ // Try to figure out the -L search path. If it fails,
+ // it's on user to specify one by passing it through
+ // RUSTFLAGS environment variable.
+ let mut libtst = false;
+ let mut libdir = nvcc;
+ libdir.pop(); // remove 'nvcc'
+ libdir.push("..");
+ let target_arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();
+ if cfg!(target_os = "linux") {
+ libdir.push("targets");
+ libdir.push(target_arch.to_owned() + "-linux");
+ libdir.push("lib");
+ libtst = true;
+ } else if cfg!(target_env = "msvc") {
+ libdir.push("lib");
+ match target_arch.as_str() {
+ "x86_64" => {
+ libdir.push("x64");
+ libtst = true;
+ }
+ "x86" => {
+ libdir.push("Win32");
+ libtst = true;
+ }
+ _ => libtst = false,
+ }
+ }
+ if libtst && libdir.is_dir() {
+ println!(
+ "cargo:rustc-link-search=native={}",
+ libdir.to_str().unwrap()
+ );
+ }
+
+ // And now the -l flag.
+ let lib = match cudart {
+ "shared" => "cudart",
+ "static" => "cudart_static",
+ bad => panic!("unsupported cudart option: {}", bad),
+ };
+ println!("cargo:rustc-link-lib={}", lib);
+ }
+ }
+
+ Ok(())
+ }
+
+ /// Run the compiler, generating the file `output`
+ ///
+ /// # Library name
+ ///
+ /// The `output` string argument determines the file name for the compiled
+ /// library. The Rust compiler will create an assembly named "lib"+output+".a".
+ /// MSVC will create a file named output+".lib".
+ ///
+ /// The choice of `output` is close to arbitrary, but:
+ ///
+ /// - must be nonempty,
+ /// - must not contain a path separator (`/`),
+ /// - must be unique across all `compile` invocations made by the same build
+ /// script.
+ ///
+ /// If your build script compiles a single source file, the base name of
+ /// that source file would usually be reasonable:
+ ///
+ /// ```no_run
+ /// cc::Build::new().file("blobstore.c").compile("blobstore");
+ /// ```
+ ///
+ /// Compiling multiple source files, some people use their crate's name, or
+ /// their crate's name + "-cc".
+ ///
+ /// Otherwise, please use your imagination.
+ ///
+ /// For backwards compatibility, if `output` starts with "lib" *and* ends
+ /// with ".a", a second "lib" prefix and ".a" suffix do not get added on,
+ /// but this usage is deprecated; please omit `lib` and `.a` in the argument
+ /// that you pass.
+ ///
+ /// # Panics
+ ///
+ /// Panics if `output` is not formatted correctly or if one of the underlying
+ /// compiler commands fails. It can also panic if it fails reading file names
+ /// or creating directories.
+ pub fn compile(&self, output: &str) {
+ if let Err(e) = self.try_compile(output) {
+ fail(&e.message);
+ }
+ }
+
+ #[cfg(feature = "parallel")]
+ fn compile_objects(&self, objs: &[Object], print: &PrintThread) -> Result<(), Error> {
+ use std::sync::{mpsc, Once};
+
+ if objs.len() <= 1 {
+ for obj in objs {
+ let (mut cmd, name) = self.create_compile_object_cmd(obj)?;
+ run(&mut cmd, &name, print)?;
+ }
+
+ return Ok(());
+ }
+
+ // Limit our parallelism globally with a jobserver. Start off by
+ // releasing our own token for this process so we can have a bit of an
+ // easier to write loop below. If this fails, though, then we're likely
+ // on Windows with the main implicit token, so we just have a bit extra
+ // parallelism for a bit and don't reacquire later.
+ let server = jobserver();
+ // Reacquire our process's token on drop
+ let _reacquire = server.release_raw().ok().map(|_| JobserverToken(server));
+
+ // When compiling objects in parallel we do a few dirty tricks to speed
+ // things up:
+ //
+ // * First is that we use the `jobserver` crate to limit the parallelism
+ // of this build script. The `jobserver` crate will use a jobserver
+ // configured by Cargo for build scripts to ensure that parallelism is
+ // coordinated across C compilations and Rust compilations. Before we
+ // compile anything we make sure to wait until we acquire a token.
+ //
+ // Note that this jobserver is cached globally so we only used one per
+ // process and only worry about creating it once.
+ //
+ // * Next we use spawn the process to actually compile objects in
+ // parallel after we've acquired a token to perform some work
+ //
+ // With all that in mind we compile all objects in a loop here, after we
+ // acquire the appropriate tokens, Once all objects have been compiled
+ // we wait on all the processes and propagate the results of compilation.
+
+ let (tx, rx) = mpsc::channel::<(_, String, KillOnDrop, _)>();
+
+ // Since jobserver::Client::acquire can block, waiting
+ // must be done in parallel so that acquire won't block forever.
+ let wait_thread = thread::Builder::new().spawn(move || {
+ let mut error = None;
+ let mut pendings = Vec::new();
+ // Buffer the stdout
+ let mut stdout = io::BufWriter::with_capacity(128, io::stdout());
+ let mut backoff_cnt = 0;
+
+ loop {
+ let mut has_made_progress = false;
+
+ // Reading new pending tasks
+ loop {
+ match rx.try_recv() {
+ Ok(pending) => {
+ has_made_progress = true;
+ pendings.push(pending)
+ }
+ Err(mpsc::TryRecvError::Disconnected) if pendings.is_empty() => {
+ let _ = stdout.flush();
+ return if let Some(err) = error {
+ Err(err)
+ } else {
+ Ok(())
+ };
+ }
+ _ => break,
+ }
+ }
+
+ // Try waiting on them.
+ pendings.retain_mut(|(cmd, program, child, _)| {
+ match try_wait_on_child(cmd, program, &mut child.0, &mut stdout) {
+ Ok(Some(())) => {
+ // Task done, remove the entry
+ has_made_progress = true;
+ false
+ }
+ Ok(None) => true, // Task still not finished, keep the entry
+ Err(err) => {
+ // Task fail, remove the entry.
+ has_made_progress = true;
+
+ // Since we can only return one error, log the error to make
+ // sure users always see all the compilation failures.
+ let _ = writeln!(stdout, "cargo:warning={}", err);
+ error = Some(err);
+
+ false
+ }
+ }
+ });
+
+ if !has_made_progress {
+ if backoff_cnt > 3 {
+ // We have yielded at least three times without making'
+ // any progress, so we will sleep for a while.
+ let duration =
+ std::time::Duration::from_millis(100 * (backoff_cnt - 3).min(10));
+ thread::sleep(duration);
+ } else {
+ // Given that we spawned a lot of compilation tasks, it is unlikely
+ // that OS cannot find other ready task to execute.
+ //
+ // If all of them are done, then we will yield them and spawn more,
+ // or simply returns.
+ //
+ // Thus this will not be turned into a busy-wait loop and it will not
+ // waste CPU resource.
+ thread::yield_now();
+ }
+ }
+
+ backoff_cnt = if has_made_progress {
+ 0
+ } else {
+ backoff_cnt + 1
+ };
+ }
+ })?;
+
+ for obj in objs {
+ let (mut cmd, program) = self.create_compile_object_cmd(obj)?;
+ let token = server.acquire()?;
+
+ let child = spawn(&mut cmd, &program, print.pipe_writer_cloned()?.unwrap())?;
+
+ tx.send((cmd, program, KillOnDrop(child), token))
+ .expect("Wait thread must be alive until all compilation jobs are done, otherwise we risk deadlock");
+ }
+ // Drop tx so that the wait_thread could return
+ drop(tx);
+
+ return wait_thread.join().expect("wait_thread panics");
+
+ /// Returns a suitable `jobserver::Client` used to coordinate
+ /// parallelism between build scripts.
+ fn jobserver() -> &'static jobserver::Client {
+ static INIT: Once = Once::new();
+ static mut JOBSERVER: Option<jobserver::Client> = None;
+
+ fn _assert_sync<T: Sync>() {}
+ _assert_sync::<jobserver::Client>();
+
+ unsafe {
+ INIT.call_once(|| {
+ let server = default_jobserver();
+ JOBSERVER = Some(server);
+ });
+ JOBSERVER.as_ref().unwrap()
+ }
+ }
+
+ unsafe fn default_jobserver() -> jobserver::Client {
+ // Try to use the environmental jobserver which Cargo typically
+ // initializes for us...
+ if let Some(client) = jobserver::Client::from_env() {
+ return client;
+ }
+
+ // ... but if that fails for whatever reason select something
+ // reasonable and crate a new jobserver. Use `NUM_JOBS` if set (it's
+ // configured by Cargo) and otherwise just fall back to a
+ // semi-reasonable number. Note that we could use `num_cpus` here
+ // but it's an extra dependency that will almost never be used, so
+ // it's generally not too worth it.
+ let mut parallelism = 4;
+ if let Ok(amt) = env::var("NUM_JOBS") {
+ if let Ok(amt) = amt.parse() {
+ parallelism = amt;
+ }
+ }
+
+ // If we create our own jobserver then be sure to reserve one token
+ // for ourselves.
+ let client = jobserver::Client::new(parallelism).expect("failed to create jobserver");
+ client.acquire_raw().expect("failed to acquire initial");
+ return client;
+ }
+
+ struct KillOnDrop(Child);
+
+ impl Drop for KillOnDrop {
+ fn drop(&mut self) {
+ let child = &mut self.0;
+
+ child.kill().ok();
+ }
+ }
+
+ struct JobserverToken(&'static jobserver::Client);
+ impl Drop for JobserverToken {
+ fn drop(&mut self) {
+ let _ = self.0.acquire_raw();
+ }
+ }
+ }
+
+ #[cfg(not(feature = "parallel"))]
+ fn compile_objects(&self, objs: &[Object], print: &PrintThread) -> Result<(), Error> {
+ for obj in objs {
+ let (mut cmd, name) = self.create_compile_object_cmd(obj)?;
+ run(&mut cmd, &name, print)?;
+ }
+
+ Ok(())
+ }
+
+ fn create_compile_object_cmd(&self, obj: &Object) -> Result<(Command, String), Error> {
+ let asm_ext = AsmFileExt::from_path(&obj.src);
+ let is_asm = asm_ext.is_some();
+ let target = self.get_target()?;
+ let msvc = target.contains("msvc");
+ let compiler = self.try_get_compiler()?;
+ let clang = compiler.family == ToolFamily::Clang;
+ let gnu = compiler.family == ToolFamily::Gnu;
+
+ let (mut cmd, name) = if msvc && asm_ext == Some(AsmFileExt::DotAsm) {
+ self.msvc_macro_assembler()?
+ } else {
+ let mut cmd = compiler.to_command();
+ for &(ref a, ref b) in self.env.iter() {
+ cmd.env(a, b);
+ }
+ (
+ cmd,
+ compiler
+ .path
+ .file_name()
+ .ok_or_else(|| Error::new(ErrorKind::IOError, "Failed to get compiler path."))?
+ .to_string_lossy()
+ .into_owned(),
+ )
+ };
+ let is_arm = target.contains("aarch64") || target.contains("arm");
+ command_add_output_file(
+ &mut cmd, &obj.dst, self.cuda, msvc, clang, gnu, is_asm, is_arm,
+ );
+ // armasm and armasm64 don't requrie -c option
+ if !msvc || !is_asm || !is_arm {
+ cmd.arg("-c");
+ }
+ if self.cuda && self.cuda_file_count() > 1 {
+ cmd.arg("--device-c");
+ }
+ if is_asm {
+ cmd.args(self.asm_flags.iter().map(std::ops::Deref::deref));
+ }
+ if compiler.family == (ToolFamily::Msvc { clang_cl: true }) && !is_asm {
+ // #513: For `clang-cl`, separate flags/options from the input file.
+ // When cross-compiling macOS -> Windows, this avoids interpreting
+ // common `/Users/...` paths as the `/U` flag and triggering
+ // `-Wslash-u-filename` warning.
+ cmd.arg("--");
+ }
+ cmd.arg(&obj.src);
+ if cfg!(target_os = "macos") {
+ self.fix_env_for_apple_os(&mut cmd)?;
+ }
+
+ Ok((cmd, name))
+ }
+
+ /// This will return a result instead of panicing; see expand() for the complete description.
+ pub fn try_expand(&self) -> Result<Vec<u8>, Error> {
+ let compiler = self.try_get_compiler()?;
+ let mut cmd = compiler.to_command();
+ for &(ref a, ref b) in self.env.iter() {
+ cmd.env(a, b);
+ }
+ cmd.arg("-E");
+
+ assert!(
+ self.files.len() <= 1,
+ "Expand may only be called for a single file"
+ );
+
+ cmd.args(self.files.iter().map(std::ops::Deref::deref));
+
+ let name = compiler
+ .path
+ .file_name()
+ .ok_or_else(|| Error::new(ErrorKind::IOError, "Failed to get compiler path."))?
+ .to_string_lossy()
+ .into_owned();
+
+ Ok(run_output(&mut cmd, &name)?)
+ }
+
+ /// Run the compiler, returning the macro-expanded version of the input files.
+ ///
+ /// This is only relevant for C and C++ files.
+ ///
+ /// # Panics
+ /// Panics if more than one file is present in the config, or if compiler
+ /// path has an invalid file name.
+ ///
+ /// # Example
+ /// ```no_run
+ /// let out = cc::Build::new().file("src/foo.c").expand();
+ /// ```
+ pub fn expand(&self) -> Vec<u8> {
+ match self.try_expand() {
+ Err(e) => fail(&e.message),
+ Ok(v) => v,
+ }
+ }
+
+ /// Get the compiler that's in use for this configuration.
+ ///
+ /// This function will return a `Tool` which represents the culmination
+ /// of this configuration at a snapshot in time. The returned compiler can
+ /// be inspected (e.g. the path, arguments, environment) to forward along to
+ /// other tools, or the `to_command` method can be used to invoke the
+ /// compiler itself.
+ ///
+ /// This method will take into account all configuration such as debug
+ /// information, optimization level, include directories, defines, etc.
+ /// Additionally, the compiler binary in use follows the standard
+ /// conventions for this path, e.g. looking at the explicitly set compiler,
+ /// environment variables (a number of which are inspected here), and then
+ /// falling back to the default configuration.
+ ///
+ /// # Panics
+ ///
+ /// Panics if an error occurred while determining the architecture.
+ pub fn get_compiler(&self) -> Tool {
+ match self.try_get_compiler() {
+ Ok(tool) => tool,
+ Err(e) => fail(&e.message),
+ }
+ }
+
+ /// Get the compiler that's in use for this configuration.
+ ///
+ /// This will return a result instead of panicing; see get_compiler() for the complete description.
+ pub fn try_get_compiler(&self) -> Result<Tool, Error> {
+ let opt_level = self.get_opt_level()?;
+ let target = self.get_target()?;
+
+ let mut cmd = self.get_base_compiler()?;
+
+ // Disable default flag generation via `no_default_flags` or environment variable
+ let no_defaults = self.no_default_flags || self.getenv("CRATE_CC_NO_DEFAULTS").is_some();
+
+ if !no_defaults {
+ self.add_default_flags(&mut cmd, &target, &opt_level)?;
+ } else {
+ println!("Info: default compiler flags are disabled");
+ }
+
+ if let Some(ref std) = self.std {
+ let separator = match cmd.family {
+ ToolFamily::Msvc { .. } => ':',
+ ToolFamily::Gnu | ToolFamily::Clang => '=',
+ };
+ cmd.push_cc_arg(format!("-std{}{}", separator, std).into());
+ }
+
+ if let Ok(flags) = self.envflags(if self.cpp { "CXXFLAGS" } else { "CFLAGS" }) {
+ for arg in flags {
+ cmd.push_cc_arg(arg.into());
+ }
+ }
+
+ for directory in self.include_directories.iter() {
+ cmd.args.push("-I".into());
+ cmd.args.push((**directory).into());
+ }
+
+ // If warnings and/or extra_warnings haven't been explicitly set,
+ // then we set them only if the environment doesn't already have
+ // CFLAGS/CXXFLAGS, since those variables presumably already contain
+ // the desired set of warnings flags.
+
+ if self
+ .warnings
+ .unwrap_or(if self.has_flags() { false } else { true })
+ {
+ let wflags = cmd.family.warnings_flags().into();
+ cmd.push_cc_arg(wflags);
+ }
+
+ if self
+ .extra_warnings
+ .unwrap_or(if self.has_flags() { false } else { true })
+ {
+ if let Some(wflags) = cmd.family.extra_warnings_flags() {
+ cmd.push_cc_arg(wflags.into());
+ }
+ }
+
+ for flag in self.flags.iter() {
+ cmd.args.push((**flag).into());
+ }
+
+ for flag in self.flags_supported.iter() {
+ if self.is_flag_supported(flag).unwrap_or(false) {
+ cmd.push_cc_arg((**flag).into());
+ }
+ }
+
+ for &(ref key, ref value) in self.definitions.iter() {
+ if let Some(ref value) = *value {
+ cmd.args.push(format!("-D{}={}", key, value).into());
+ } else {
+ cmd.args.push(format!("-D{}", key).into());
+ }
+ }
+
+ if self.warnings_into_errors {
+ let warnings_to_errors_flag = cmd.family.warnings_to_errors_flag().into();
+ cmd.push_cc_arg(warnings_to_errors_flag);
+ }
+
+ Ok(cmd)
+ }
+
+ fn add_default_flags(
+ &self,
+ cmd: &mut Tool,
+ target: &str,
+ opt_level: &str,
+ ) -> Result<(), Error> {
+ // Non-target flags
+ // If the flag is not conditioned on target variable, it belongs here :)
+ match cmd.family {
+ ToolFamily::Msvc { .. } => {
+ cmd.push_cc_arg("-nologo".into());
+
+ let crt_flag = match self.static_crt {
+ Some(true) => "-MT",
+ Some(false) => "-MD",
+ None => {
+ let features = self.getenv("CARGO_CFG_TARGET_FEATURE");
+ let features = features.as_deref().unwrap_or_default();
+ if features.contains("crt-static") {
+ "-MT"
+ } else {
+ "-MD"
+ }
+ }
+ };
+ cmd.push_cc_arg(crt_flag.into());
+
+ match &opt_level[..] {
+ // Msvc uses /O1 to enable all optimizations that minimize code size.
+ "z" | "s" | "1" => cmd.push_opt_unless_duplicate("-O1".into()),
+ // -O3 is a valid value for gcc and clang compilers, but not msvc. Cap to /O2.
+ "2" | "3" => cmd.push_opt_unless_duplicate("-O2".into()),
+ _ => {}
+ }
+ }
+ ToolFamily::Gnu | ToolFamily::Clang => {
+ // arm-linux-androideabi-gcc 4.8 shipped with Android NDK does
+ // not support '-Oz'
+ if opt_level == "z" && cmd.family != ToolFamily::Clang {
+ cmd.push_opt_unless_duplicate("-Os".into());
+ } else {
+ cmd.push_opt_unless_duplicate(format!("-O{}", opt_level).into());
+ }
+
+ if cmd.family == ToolFamily::Clang && target.contains("windows") {
+ // Disambiguate mingw and msvc on Windows. Problem is that
+ // depending on the origin clang can default to a mismatchig
+ // run-time.
+ cmd.push_cc_arg(format!("--target={}", target).into());
+ }
+
+ if cmd.family == ToolFamily::Clang && target.contains("android") {
+ // For compatibility with code that doesn't use pre-defined `__ANDROID__` macro.
+ // If compiler used via ndk-build or cmake (officially supported build methods)
+ // this macros is defined.
+ // See https://android.googlesource.com/platform/ndk/+/refs/heads/ndk-release-r21/build/cmake/android.toolchain.cmake#456
+ // https://android.googlesource.com/platform/ndk/+/refs/heads/ndk-release-r21/build/core/build-binary.mk#141
+ cmd.push_opt_unless_duplicate("-DANDROID".into());
+ }
+
+ if !target.contains("apple-ios") && !target.contains("apple-watchos") {
+ cmd.push_cc_arg("-ffunction-sections".into());
+ cmd.push_cc_arg("-fdata-sections".into());
+ }
+ // Disable generation of PIC on bare-metal for now: rust-lld doesn't support this yet
+ if self.pic.unwrap_or(
+ !target.contains("windows")
+ && !target.contains("-none-")
+ && !target.contains("uefi"),
+ ) {
+ cmd.push_cc_arg("-fPIC".into());
+ // PLT only applies if code is compiled with PIC support,
+ // and only for ELF targets.
+ if target.contains("linux") && !self.use_plt.unwrap_or(true) {
+ cmd.push_cc_arg("-fno-plt".into());
+ }
+ }
+ }
+ }
+
+ if self.get_debug() {
+ if self.cuda {
+ // NVCC debug flag
+ cmd.args.push("-G".into());
+ }
+ let family = cmd.family;
+ family.add_debug_flags(cmd, self.get_dwarf_version());
+ }
+
+ if self.get_force_frame_pointer() {
+ let family = cmd.family;
+ family.add_force_frame_pointer(cmd);
+ }
+
+ // Target flags
+ match cmd.family {
+ ToolFamily::Clang => {
+ if !(target.contains("android")
+ && android_clang_compiler_uses_target_arg_internally(&cmd.path))
+ {
+ if target.contains("darwin") {
+ if let Some(arch) =
+ map_darwin_target_from_rust_to_compiler_architecture(target)
+ {
+ cmd.args
+ .push(format!("--target={}-apple-darwin", arch).into());
+ }
+ } else if target.contains("macabi") {
+ if let Some(arch) =
+ map_darwin_target_from_rust_to_compiler_architecture(target)
+ {
+ cmd.args
+ .push(format!("--target={}-apple-ios-macabi", arch).into());
+ }
+ } else if target.contains("ios-sim") {
+ if let Some(arch) =
+ map_darwin_target_from_rust_to_compiler_architecture(target)
+ {
+ let deployment_target = env::var("IPHONEOS_DEPLOYMENT_TARGET")
+ .unwrap_or_else(|_| "7.0".into());
+ cmd.args.push(
+ format!(
+ "--target={}-apple-ios{}-simulator",
+ arch, deployment_target
+ )
+ .into(),
+ );
+ }
+ } else if target.contains("watchos-sim") {
+ if let Some(arch) =
+ map_darwin_target_from_rust_to_compiler_architecture(target)
+ {
+ let deployment_target = env::var("WATCHOS_DEPLOYMENT_TARGET")
+ .unwrap_or_else(|_| "5.0".into());
+ cmd.args.push(
+ format!(
+ "--target={}-apple-watchos{}-simulator",
+ arch, deployment_target
+ )
+ .into(),
+ );
+ }
+ } else if target.starts_with("riscv64gc-") {
+ cmd.args.push(
+ format!("--target={}", target.replace("riscv64gc", "riscv64")).into(),
+ );
+ } else if target.starts_with("riscv32gc-") {
+ cmd.args.push(
+ format!("--target={}", target.replace("riscv32gc", "riscv32")).into(),
+ );
+ } else if target.contains("uefi") {
+ if target.contains("x86_64") {
+ cmd.args.push("--target=x86_64-unknown-windows-gnu".into());
+ } else if target.contains("i686") {
+ cmd.args.push("--target=i686-unknown-windows-gnu".into())
+ } else if target.contains("aarch64") {
+ cmd.args.push("--target=aarch64-unknown-windows-gnu".into())
+ }
+ } else if target.ends_with("-freebsd") {
+ // FreeBSD only supports C++11 and above when compiling against libc++
+ // (available from FreeBSD 10 onwards). Under FreeBSD, clang uses libc++ by
+ // default on FreeBSD 10 and newer unless `--target` is manually passed to
+ // the compiler, in which case its default behavior differs:
+ // * If --target=xxx-unknown-freebsdX(.Y) is specified and X is greater than
+ // or equal to 10, clang++ uses libc++
+ // * If --target=xxx-unknown-freebsd is specified (without a version),
+ // clang++ cannot assume libc++ is available and reverts to a default of
+ // libstdc++ (this behavior was changed in llvm 14).
+ //
+ // This breaks C++11 (or greater) builds if targeting FreeBSD with the
+ // generic xxx-unknown-freebsd triple on clang 13 or below *without*
+ // explicitly specifying that libc++ should be used.
+ // When cross-compiling, we can't infer from the rust/cargo target triple
+ // which major version of FreeBSD we are targeting, so we need to make sure
+ // that libc++ is used (unless the user has explicitly specified otherwise).
+ // There's no compelling reason to use a different approach when compiling
+ // natively.
+ if self.cpp && self.cpp_set_stdlib.is_none() {
+ cmd.push_cc_arg("-stdlib=libc++".into());
+ }
+
+ cmd.push_cc_arg(format!("--target={}", target).into());
+ } else {
+ cmd.push_cc_arg(format!("--target={}", target).into());
+ }
+ }
+ }
+ ToolFamily::Msvc { clang_cl } => {
+ // This is an undocumented flag from MSVC but helps with making
+ // builds more reproducible by avoiding putting timestamps into
+ // files.
+ cmd.push_cc_arg("-Brepro".into());
+
+ if clang_cl {
+ if target.contains("x86_64") {
+ cmd.push_cc_arg("-m64".into());
+ } else if target.contains("86") {
+ cmd.push_cc_arg("-m32".into());
+ cmd.push_cc_arg("-arch:IA32".into());
+ } else {
+ cmd.push_cc_arg(format!("--target={}", target).into());
+ }
+ } else {
+ if target.contains("i586") {
+ cmd.push_cc_arg("-arch:IA32".into());
+ }
+ }
+
+ // There is a check in corecrt.h that will generate a
+ // compilation error if
+ // _ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE is
+ // not defined to 1. The check was added in Windows
+ // 8 days because only store apps were allowed on ARM.
+ // This changed with the release of Windows 10 IoT Core.
+ // The check will be going away in future versions of
+ // the SDK, but for all released versions of the
+ // Windows SDK it is required.
+ if target.contains("arm") || target.contains("thumb") {
+ cmd.args
+ .push("-D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE=1".into());
+ }
+ }
+ ToolFamily::Gnu => {
+ if target.contains("i686") || target.contains("i586") {
+ cmd.args.push("-m32".into());
+ } else if target == "x86_64-unknown-linux-gnux32" {
+ cmd.args.push("-mx32".into());
+ } else if target.contains("x86_64") || target.contains("powerpc64") {
+ cmd.args.push("-m64".into());
+ }
+
+ if target.contains("darwin") {
+ if let Some(arch) = map_darwin_target_from_rust_to_compiler_architecture(target)
+ {
+ cmd.args.push("-arch".into());
+ cmd.args.push(arch.into());
+ }
+ }
+
+ if target.contains("-kmc-solid_") {
+ cmd.args.push("-finput-charset=utf-8".into());
+ }
+
+ if self.static_flag.is_none() {
+ let features = self.getenv("CARGO_CFG_TARGET_FEATURE");
+ let features = features.as_deref().unwrap_or_default();
+ if features.contains("crt-static") {
+ cmd.args.push("-static".into());
+ }
+ }
+
+ // armv7 targets get to use armv7 instructions
+ if (target.starts_with("armv7") || target.starts_with("thumbv7"))
+ && (target.contains("-linux-") || target.contains("-kmc-solid_"))
+ {
+ cmd.args.push("-march=armv7-a".into());
+
+ if target.ends_with("eabihf") {
+ // lowest common denominator FPU
+ cmd.args.push("-mfpu=vfpv3-d16".into());
+ }
+ }
+
+ // (x86 Android doesn't say "eabi")
+ if target.contains("-androideabi") && target.contains("v7") {
+ // -march=armv7-a handled above
+ cmd.args.push("-mthumb".into());
+ if !target.contains("neon") {
+ // On android we can guarantee some extra float instructions
+ // (specified in the android spec online)
+ // NEON guarantees even more; see below.
+ cmd.args.push("-mfpu=vfpv3-d16".into());
+ }
+ cmd.args.push("-mfloat-abi=softfp".into());
+ }
+
+ if target.contains("neon") {
+ cmd.args.push("-mfpu=neon-vfpv4".into());
+ }
+
+ if target.starts_with("armv4t-unknown-linux-") {
+ cmd.args.push("-march=armv4t".into());
+ cmd.args.push("-marm".into());
+ cmd.args.push("-mfloat-abi=soft".into());
+ }
+
+ if target.starts_with("armv5te-unknown-linux-") {
+ cmd.args.push("-march=armv5te".into());
+ cmd.args.push("-marm".into());
+ cmd.args.push("-mfloat-abi=soft".into());
+ }
+
+ // For us arm == armv6 by default
+ if target.starts_with("arm-unknown-linux-") {
+ cmd.args.push("-march=armv6".into());
+ cmd.args.push("-marm".into());
+ if target.ends_with("hf") {
+ cmd.args.push("-mfpu=vfp".into());
+ } else {
+ cmd.args.push("-mfloat-abi=soft".into());
+ }
+ }
+
+ // We can guarantee some settings for FRC
+ if target.starts_with("arm-frc-") {
+ cmd.args.push("-march=armv7-a".into());
+ cmd.args.push("-mcpu=cortex-a9".into());
+ cmd.args.push("-mfpu=vfpv3".into());
+ cmd.args.push("-mfloat-abi=softfp".into());
+ cmd.args.push("-marm".into());
+ }
+
+ // Turn codegen down on i586 to avoid some instructions.
+ if target.starts_with("i586-unknown-linux-") {
+ cmd.args.push("-march=pentium".into());
+ }
+
+ // Set codegen level for i686 correctly
+ if target.starts_with("i686-unknown-linux-") {
+ cmd.args.push("-march=i686".into());
+ }
+
+ // Looks like `musl-gcc` makes it hard for `-m32` to make its way
+ // all the way to the linker, so we need to actually instruct the
+ // linker that we're generating 32-bit executables as well. This'll
+ // typically only be used for build scripts which transitively use
+ // these flags that try to compile executables.
+ if target == "i686-unknown-linux-musl" || target == "i586-unknown-linux-musl" {
+ cmd.args.push("-Wl,-melf_i386".into());
+ }
+
+ if target.starts_with("thumb") {
+ cmd.args.push("-mthumb".into());
+
+ if target.ends_with("eabihf") {
+ cmd.args.push("-mfloat-abi=hard".into())
+ }
+ }
+ if target.starts_with("thumbv6m") {
+ cmd.args.push("-march=armv6s-m".into());
+ }
+ if target.starts_with("thumbv7em") {
+ cmd.args.push("-march=armv7e-m".into());
+
+ if target.ends_with("eabihf") {
+ cmd.args.push("-mfpu=fpv4-sp-d16".into())
+ }
+ }
+ if target.starts_with("thumbv7m") {
+ cmd.args.push("-march=armv7-m".into());
+ }
+ if target.starts_with("thumbv8m.base") {
+ cmd.args.push("-march=armv8-m.base".into());
+ }
+ if target.starts_with("thumbv8m.main") {
+ cmd.args.push("-march=armv8-m.main".into());
+
+ if target.ends_with("eabihf") {
+ cmd.args.push("-mfpu=fpv5-sp-d16".into())
+ }
+ }
+ if target.starts_with("armebv7r") | target.starts_with("armv7r") {
+ if target.starts_with("armeb") {
+ cmd.args.push("-mbig-endian".into());
+ } else {
+ cmd.args.push("-mlittle-endian".into());
+ }
+
+ // ARM mode
+ cmd.args.push("-marm".into());
+
+ // R Profile
+ cmd.args.push("-march=armv7-r".into());
+
+ if target.ends_with("eabihf") {
+ // Calling convention
+ cmd.args.push("-mfloat-abi=hard".into());
+
+ // lowest common denominator FPU
+ // (see Cortex-R4 technical reference manual)
+ cmd.args.push("-mfpu=vfpv3-d16".into())
+ } else {
+ // Calling convention
+ cmd.args.push("-mfloat-abi=soft".into());
+ }
+ }
+ if target.starts_with("armv7a") {
+ cmd.args.push("-march=armv7-a".into());
+
+ if target.ends_with("eabihf") {
+ // lowest common denominator FPU
+ cmd.args.push("-mfpu=vfpv3-d16".into());
+ }
+ }
+ if target.starts_with("riscv32") || target.starts_with("riscv64") {
+ // get the 32i/32imac/32imc/64gc/64imac/... part
+ let mut parts = target.split('-');
+ if let Some(arch) = parts.next() {
+ let arch = &arch[5..];
+ if target.contains("linux") && arch.starts_with("64") {
+ cmd.args.push(("-march=rv64gc").into());
+ cmd.args.push("-mabi=lp64d".into());
+ } else if target.contains("freebsd") && arch.starts_with("64") {
+ cmd.args.push(("-march=rv64gc").into());
+ cmd.args.push("-mabi=lp64d".into());
+ } else if target.contains("netbsd") && arch.starts_with("64") {
+ cmd.args.push(("-march=rv64gc").into());
+ cmd.args.push("-mabi=lp64d".into());
+ } else if target.contains("openbsd") && arch.starts_with("64") {
+ cmd.args.push(("-march=rv64gc").into());
+ cmd.args.push("-mabi=lp64d".into());
+ } else if target.contains("linux") && arch.starts_with("32") {
+ cmd.args.push(("-march=rv32gc").into());
+ cmd.args.push("-mabi=ilp32d".into());
+ } else if arch.starts_with("64") {
+ cmd.args.push(("-march=rv".to_owned() + arch).into());
+ cmd.args.push("-mabi=lp64".into());
+ } else {
+ cmd.args.push(("-march=rv".to_owned() + arch).into());
+ cmd.args.push("-mabi=ilp32".into());
+ }
+ cmd.args.push("-mcmodel=medany".into());
+ }
+ }
+ }
+ }
+
+ if target.contains("apple-ios") || target.contains("apple-watchos") {
+ self.ios_watchos_flags(cmd)?;
+ }
+
+ if self.static_flag.unwrap_or(false) {
+ cmd.args.push("-static".into());
+ }
+ if self.shared_flag.unwrap_or(false) {
+ cmd.args.push("-shared".into());
+ }
+
+ if self.cpp {
+ match (self.cpp_set_stdlib.as_ref(), cmd.family) {
+ (None, _) => {}
+ (Some(stdlib), ToolFamily::Gnu) | (Some(stdlib), ToolFamily::Clang) => {
+ cmd.push_cc_arg(format!("-stdlib=lib{}", stdlib).into());
+ }
+ _ => {
+ println!(
+ "cargo:warning=cpp_set_stdlib is specified, but the {:?} compiler \
+ does not support this option, ignored",
+ cmd.family
+ );
+ }
+ }
+ }
+
+ Ok(())
+ }
+
+ fn has_flags(&self) -> bool {
+ let flags_env_var_name = if self.cpp { "CXXFLAGS" } else { "CFLAGS" };
+ let flags_env_var_value = self.getenv_with_target_prefixes(flags_env_var_name);
+ if let Ok(_) = flags_env_var_value {
+ true
+ } else {
+ false
+ }
+ }
+
+ fn msvc_macro_assembler(&self) -> Result<(Command, String), Error> {
+ let target = self.get_target()?;
+ let tool = if target.contains("x86_64") {
+ "ml64.exe"
+ } else if target.contains("arm") {
+ "armasm.exe"
+ } else if target.contains("aarch64") {
+ "armasm64.exe"
+ } else {
+ "ml.exe"
+ };
+ let mut cmd = windows_registry::find(&target, tool).unwrap_or_else(|| self.cmd(tool));
+ cmd.arg("-nologo"); // undocumented, yet working with armasm[64]
+ for directory in self.include_directories.iter() {
+ cmd.arg("-I").arg(&**directory);
+ }
+ if target.contains("aarch64") || target.contains("arm") {
+ if self.get_debug() {
+ cmd.arg("-g");
+ }
+
+ println!("cargo:warning=The MSVC ARM assemblers do not support -D flags");
+ } else {
+ if self.get_debug() {
+ cmd.arg("-Zi");
+ }
+
+ for &(ref key, ref value) in self.definitions.iter() {
+ if let Some(ref value) = *value {
+ cmd.arg(&format!("-D{}={}", key, value));
+ } else {
+ cmd.arg(&format!("-D{}", key));
+ }
+ }
+ }
+
+ if target.contains("i686") || target.contains("i586") {
+ cmd.arg("-safeseh");
+ }
+ for flag in self.flags.iter() {
+ cmd.arg(&**flag);
+ }
+
+ Ok((cmd, tool.to_string()))
+ }
+
+ fn assemble(
+ &self,
+ lib_name: &str,
+ dst: &Path,
+ objs: &[Object],
+ print: &PrintThread,
+ ) -> Result<(), Error> {
+ // Delete the destination if it exists as we want to
+ // create on the first iteration instead of appending.
+ let _ = fs::remove_file(dst);
+
+ // Add objects to the archive in limited-length batches. This helps keep
+ // the length of the command line within a reasonable length to avoid
+ // blowing system limits on limiting platforms like Windows.
+ let objs: Vec<_> = objs
+ .iter()
+ .map(|o| o.dst.as_path())
+ .chain(self.objects.iter().map(std::ops::Deref::deref))
+ .collect();
+ for chunk in objs.chunks(100) {
+ self.assemble_progressive(dst, chunk, print)?;
+ }
+
+ if self.cuda && self.cuda_file_count() > 0 {
+ // Link the device-side code and add it to the target library,
+ // so that non-CUDA linker can link the final binary.
+
+ let out_dir = self.get_out_dir()?;
+ let dlink = out_dir.join(lib_name.to_owned() + "_dlink.o");
+ let mut nvcc = self.get_compiler().to_command();
+ nvcc.arg("--device-link").arg("-o").arg(&dlink).arg(dst);
+ run(&mut nvcc, "nvcc", print)?;
+ self.assemble_progressive(dst, &[dlink.as_path()], print)?;
+ }
+
+ let target = self.get_target()?;
+ if target.contains("msvc") {
+ // The Rust compiler will look for libfoo.a and foo.lib, but the
+ // MSVC linker will also be passed foo.lib, so be sure that both
+ // exist for now.
+
+ let lib_dst = dst.with_file_name(format!("{}.lib", lib_name));
+ let _ = fs::remove_file(&lib_dst);
+ match fs::hard_link(&dst, &lib_dst).or_else(|_| {
+ // if hard-link fails, just copy (ignoring the number of bytes written)
+ fs::copy(&dst, &lib_dst).map(|_| ())
+ }) {
+ Ok(_) => (),
+ Err(_) => {
+ return Err(Error::new(
+ ErrorKind::IOError,
+ "Could not copy or create a hard-link to the generated lib file.",
+ ));
+ }
+ };
+ } else {
+ // Non-msvc targets (those using `ar`) need a separate step to add
+ // the symbol table to archives since our construction command of
+ // `cq` doesn't add it for us.
+ let (mut ar, cmd, _any_flags) = self.get_ar()?;
+
+ // NOTE: We add `s` even if flags were passed using $ARFLAGS/ar_flag, because `s`
+ // here represents a _mode_, not an arbitrary flag. Further discussion of this choice
+ // can be seen in https://github.com/rust-lang/cc-rs/pull/763.
+ run(ar.arg("s").arg(dst), &cmd, print)?;
+ }
+
+ Ok(())
+ }
+
+ fn assemble_progressive(
+ &self,
+ dst: &Path,
+ objs: &[&Path],
+ print: &PrintThread,
+ ) -> Result<(), Error> {
+ let target = self.get_target()?;
+
+ if target.contains("msvc") {
+ let (mut cmd, program, any_flags) = self.get_ar()?;
+ // NOTE: -out: here is an I/O flag, and so must be included even if $ARFLAGS/ar_flag is
+ // in use. -nologo on the other hand is just a regular flag, and one that we'll skip if
+ // the caller has explicitly dictated the flags they want. See
+ // https://github.com/rust-lang/cc-rs/pull/763 for further discussion.
+ let mut out = OsString::from("-out:");
+ out.push(dst);
+ cmd.arg(out);
+ if !any_flags {
+ cmd.arg("-nologo");
+ }
+ // If the library file already exists, add the library name
+ // as an argument to let lib.exe know we are appending the objs.
+ if dst.exists() {
+ cmd.arg(dst);
+ }
+ cmd.args(objs);
+ run(&mut cmd, &program, print)?;
+ } else {
+ let (mut ar, cmd, _any_flags) = self.get_ar()?;
+
+ // Set an environment variable to tell the OSX archiver to ensure
+ // that all dates listed in the archive are zero, improving
+ // determinism of builds. AFAIK there's not really official
+ // documentation of this but there's a lot of references to it if
+ // you search google.
+ //
+ // You can reproduce this locally on a mac with:
+ //
+ // $ touch foo.c
+ // $ cc -c foo.c -o foo.o
+ //
+ // # Notice that these two checksums are different
+ // $ ar crus libfoo1.a foo.o && sleep 2 && ar crus libfoo2.a foo.o
+ // $ md5sum libfoo*.a
+ //
+ // # Notice that these two checksums are the same
+ // $ export ZERO_AR_DATE=1
+ // $ ar crus libfoo1.a foo.o && sleep 2 && touch foo.o && ar crus libfoo2.a foo.o
+ // $ md5sum libfoo*.a
+ //
+ // In any case if this doesn't end up getting read, it shouldn't
+ // cause that many issues!
+ ar.env("ZERO_AR_DATE", "1");
+
+ // NOTE: We add cq here regardless of whether $ARFLAGS/ar_flag have been used because
+ // it dictates the _mode_ ar runs in, which the setter of $ARFLAGS/ar_flag can't
+ // dictate. See https://github.com/rust-lang/cc-rs/pull/763 for further discussion.
+ run(ar.arg("cq").arg(dst).args(objs), &cmd, print)?;
+ }
+
+ Ok(())
+ }
+
+ fn ios_watchos_flags(&self, cmd: &mut Tool) -> Result<(), Error> {
+ enum ArchSpec {
+ Device(&'static str),
+ Simulator(&'static str),
+ Catalyst(&'static str),
+ }
+
+ enum Os {
+ Ios,
+ WatchOs,
+ }
+ impl Display for Os {
+ fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+ match self {
+ Os::Ios => f.write_str("iOS"),
+ Os::WatchOs => f.write_str("WatchOS"),
+ }
+ }
+ }
+
+ let target = self.get_target()?;
+ let os = if target.contains("-watchos") {
+ Os::WatchOs
+ } else {
+ Os::Ios
+ };
+
+ let arch = target.split('-').nth(0).ok_or_else(|| {
+ Error::new(
+ ErrorKind::ArchitectureInvalid,
+ format!("Unknown architecture for {} target.", os),
+ )
+ })?;
+
+ let is_catalyst = match target.split('-').nth(3) {
+ Some(v) => v == "macabi",
+ None => false,
+ };
+
+ let is_sim = match target.split('-').nth(3) {
+ Some(v) => v == "sim",
+ None => false,
+ };
+
+ let arch = if is_catalyst {
+ match arch {
+ "arm64e" => ArchSpec::Catalyst("arm64e"),
+ "arm64" | "aarch64" => ArchSpec::Catalyst("arm64"),
+ "x86_64" => ArchSpec::Catalyst("-m64"),
+ _ => {
+ return Err(Error::new(
+ ErrorKind::ArchitectureInvalid,
+ "Unknown architecture for iOS target.",
+ ));
+ }
+ }
+ } else if is_sim {
+ match arch {
+ "arm64" | "aarch64" => ArchSpec::Simulator("arm64"),
+ "x86_64" => ArchSpec::Simulator("-m64"),
+ _ => {
+ return Err(Error::new(
+ ErrorKind::ArchitectureInvalid,
+ "Unknown architecture for iOS simulator target.",
+ ));
+ }
+ }
+ } else {
+ match arch {
+ "arm" | "armv7" | "thumbv7" => ArchSpec::Device("armv7"),
+ "armv7k" => ArchSpec::Device("armv7k"),
+ "armv7s" | "thumbv7s" => ArchSpec::Device("armv7s"),
+ "arm64e" => ArchSpec::Device("arm64e"),
+ "arm64" | "aarch64" => ArchSpec::Device("arm64"),
+ "arm64_32" => ArchSpec::Device("arm64_32"),
+ "i386" | "i686" => ArchSpec::Simulator("-m32"),
+ "x86_64" => ArchSpec::Simulator("-m64"),
+ _ => {
+ return Err(Error::new(
+ ErrorKind::ArchitectureInvalid,
+ format!("Unknown architecture for {} target.", os),
+ ));
+ }
+ }
+ };
+
+ let (sdk_prefix, sim_prefix, min_version) = match os {
+ Os::Ios => (
+ "iphone",
+ "ios-",
+ std::env::var("IPHONEOS_DEPLOYMENT_TARGET").unwrap_or_else(|_| "7.0".into()),
+ ),
+ Os::WatchOs => (
+ "watch",
+ "watch",
+ std::env::var("WATCHOS_DEPLOYMENT_TARGET").unwrap_or_else(|_| "2.0".into()),
+ ),
+ };
+
+ let sdk = match arch {
+ ArchSpec::Device(arch) => {
+ cmd.args.push("-arch".into());
+ cmd.args.push(arch.into());
+ cmd.args
+ .push(format!("-m{}os-version-min={}", sdk_prefix, min_version).into());
+ format!("{}os", sdk_prefix)
+ }
+ ArchSpec::Simulator(arch) => {
+ if arch.starts_with('-') {
+ // -m32 or -m64
+ cmd.args.push(arch.into());
+ } else {
+ cmd.args.push("-arch".into());
+ cmd.args.push(arch.into());
+ }
+ cmd.args
+ .push(format!("-m{}simulator-version-min={}", sim_prefix, min_version).into());
+ format!("{}simulator", sdk_prefix)
+ }
+ ArchSpec::Catalyst(_) => "macosx".to_owned(),
+ };
+
+ self.print(&format_args!("Detecting {} SDK path for {}", os, sdk));
+ let sdk_path = if let Some(sdkroot) = env::var_os("SDKROOT") {
+ sdkroot
+ } else {
+ self.apple_sdk_root(sdk.as_str())?
+ };
+
+ cmd.args.push("-isysroot".into());
+ cmd.args.push(sdk_path);
+ // TODO: Remove this once Apple stops accepting apps built with Xcode 13
+ cmd.args.push("-fembed-bitcode".into());
+
+ Ok(())
+ }
+
+ fn cmd<P: AsRef<OsStr>>(&self, prog: P) -> Command {
+ let mut cmd = Command::new(prog);
+ for &(ref a, ref b) in self.env.iter() {
+ cmd.env(a, b);
+ }
+ cmd
+ }
+
+ fn get_base_compiler(&self) -> Result<Tool, Error> {
+ if let Some(c) = &self.compiler {
+ return Ok(Tool::new((**c).to_owned()));
+ }
+ let host = self.get_host()?;
+ let target = self.get_target()?;
+ let target = &*target;
+ let (env, msvc, gnu, traditional, clang) = if self.cpp {
+ ("CXX", "cl.exe", "g++", "c++", "clang++")
+ } else {
+ ("CC", "cl.exe", "gcc", "cc", "clang")
+ };
+
+ // On historical Solaris systems, "cc" may have been Sun Studio, which
+ // is not flag-compatible with "gcc". This history casts a long shadow,
+ // and many modern illumos distributions today ship GCC as "gcc" without
+ // also making it available as "cc".
+ let default = if host.contains("solaris") || host.contains("illumos") {
+ gnu
+ } else {
+ traditional
+ };
+
+ let cl_exe = windows_registry::find_tool(&target, "cl.exe");
+
+ let tool_opt: Option<Tool> = self
+ .env_tool(env)
+ .map(|(tool, wrapper, args)| {
+ // find the driver mode, if any
+ const DRIVER_MODE: &str = "--driver-mode=";
+ let driver_mode = args
+ .iter()
+ .find(|a| a.starts_with(DRIVER_MODE))
+ .map(|a| &a[DRIVER_MODE.len()..]);
+ // Chop off leading/trailing whitespace to work around
+ // semi-buggy build scripts which are shared in
+ // makefiles/configure scripts (where spaces are far more
+ // lenient)
+ let mut t = Tool::with_clang_driver(tool, driver_mode);
+ if let Some(cc_wrapper) = wrapper {
+ t.cc_wrapper_path = Some(PathBuf::from(cc_wrapper));
+ }
+ for arg in args {
+ t.cc_wrapper_args.push(arg.into());
+ }
+ t
+ })
+ .or_else(|| {
+ if target.contains("emscripten") {
+ let tool = if self.cpp { "em++" } else { "emcc" };
+ // Windows uses bat file so we have to be a bit more specific
+ if cfg!(windows) {
+ let mut t = Tool::new(PathBuf::from("cmd"));
+ t.args.push("/c".into());
+ t.args.push(format!("{}.bat", tool).into());
+ Some(t)
+ } else {
+ Some(Tool::new(PathBuf::from(tool)))
+ }
+ } else {
+ None
+ }
+ })
+ .or_else(|| cl_exe.clone());
+
+ let tool = match tool_opt {
+ Some(t) => t,
+ None => {
+ let compiler = if host.contains("windows") && target.contains("windows") {
+ if target.contains("msvc") {
+ msvc.to_string()
+ } else {
+ let cc = if target.contains("llvm") { clang } else { gnu };
+ format!("{}.exe", cc)
+ }
+ } else if target.contains("apple-ios") {
+ clang.to_string()
+ } else if target.contains("apple-watchos") {
+ clang.to_string()
+ } else if target.contains("android") {
+ autodetect_android_compiler(&target, &host, gnu, clang)
+ } else if target.contains("cloudabi") {
+ format!("{}-{}", target, traditional)
+ } else if target == "wasm32-wasi"
+ || target == "wasm32-unknown-wasi"
+ || target == "wasm32-unknown-unknown"
+ {
+ "clang".to_string()
+ } else if target.contains("vxworks") {
+ if self.cpp {
+ "wr-c++".to_string()
+ } else {
+ "wr-cc".to_string()
+ }
+ } else if target.starts_with("armv7a-kmc-solid_") {
+ format!("arm-kmc-eabi-{}", gnu)
+ } else if target.starts_with("aarch64-kmc-solid_") {
+ format!("aarch64-kmc-elf-{}", gnu)
+ } else if &*self.get_host()? != target {
+ let prefix = self.prefix_for_target(&target);
+ match prefix {
+ Some(prefix) => {
+ let cc = if target.contains("llvm") { clang } else { gnu };
+ format!("{}-{}", prefix, cc)
+ }
+ None => default.to_string(),
+ }
+ } else {
+ default.to_string()
+ };
+
+ let mut t = Tool::new(PathBuf::from(compiler));
+ if let Some(cc_wrapper) = Self::rustc_wrapper_fallback() {
+ t.cc_wrapper_path = Some(PathBuf::from(cc_wrapper));
+ }
+ t
+ }
+ };
+
+ let mut tool = if self.cuda {
+ assert!(
+ tool.args.is_empty(),
+ "CUDA compilation currently assumes empty pre-existing args"
+ );
+ let nvcc = match self.getenv_with_target_prefixes("NVCC") {
+ Err(_) => PathBuf::from("nvcc"),
+ Ok(nvcc) => PathBuf::from(&*nvcc),
+ };
+ let mut nvcc_tool = Tool::with_features(nvcc, None, self.cuda);
+ nvcc_tool
+ .args
+ .push(format!("-ccbin={}", tool.path.display()).into());
+ nvcc_tool.family = tool.family;
+ nvcc_tool
+ } else {
+ tool
+ };
+
+ // New "standalone" C/C++ cross-compiler executables from recent Android NDK
+ // are just shell scripts that call main clang binary (from Android NDK) with
+ // proper `--target` argument.
+ //
+ // For example, armv7a-linux-androideabi16-clang passes
+ // `--target=armv7a-linux-androideabi16` to clang.
+ //
+ // As the shell script calls the main clang binary, the command line limit length
+ // on Windows is restricted to around 8k characters instead of around 32k characters.
+ // To remove this limit, we call the main clang binary directly and construct the
+ // `--target=` ourselves.
+ if host.contains("windows") && android_clang_compiler_uses_target_arg_internally(&tool.path)
+ {
+ if let Some(path) = tool.path.file_name() {
+ let file_name = path.to_str().unwrap().to_owned();
+ let (target, clang) = file_name.split_at(file_name.rfind("-").unwrap());
+
+ tool.path.set_file_name(clang.trim_start_matches("-"));
+ tool.path.set_extension("exe");
+ tool.args.push(format!("--target={}", target).into());
+
+ // Additionally, shell scripts for target i686-linux-android versions 16 to 24
+ // pass the `mstackrealign` option so we do that here as well.
+ if target.contains("i686-linux-android") {
+ let (_, version) = target.split_at(target.rfind("d").unwrap() + 1);
+ if let Ok(version) = version.parse::<u32>() {
+ if version > 15 && version < 25 {
+ tool.args.push("-mstackrealign".into());
+ }
+ }
+ }
+ };
+ }
+
+ // If we found `cl.exe` in our environment, the tool we're returning is
+ // an MSVC-like tool, *and* no env vars were set then set env vars for
+ // the tool that we're returning.
+ //
+ // Env vars are needed for things like `link.exe` being put into PATH as
+ // well as header include paths sometimes. These paths are automatically
+ // included by default but if the `CC` or `CXX` env vars are set these
+ // won't be used. This'll ensure that when the env vars are used to
+ // configure for invocations like `clang-cl` we still get a "works out
+ // of the box" experience.
+ if let Some(cl_exe) = cl_exe {
+ if tool.family == (ToolFamily::Msvc { clang_cl: true })
+ && tool.env.len() == 0
+ && target.contains("msvc")
+ {
+ for &(ref k, ref v) in cl_exe.env.iter() {
+ tool.env.push((k.to_owned(), v.to_owned()));
+ }
+ }
+ }
+
+ if target.contains("msvc") && tool.family == ToolFamily::Gnu {
+ println!("cargo:warning=GNU compiler is not supported for this target");
+ }
+
+ Ok(tool)
+ }
+
+ /// Returns a fallback `cc_compiler_wrapper` by introspecting `RUSTC_WRAPPER`
+ fn rustc_wrapper_fallback() -> Option<String> {
+ // No explicit CC wrapper was detected, but check if RUSTC_WRAPPER
+ // is defined and is a build accelerator that is compatible with
+ // C/C++ compilers (e.g. sccache)
+ const VALID_WRAPPERS: &[&'static str] = &["sccache", "cachepot"];
+
+ let rustc_wrapper = std::env::var_os("RUSTC_WRAPPER")?;
+ let wrapper_path = Path::new(&rustc_wrapper);
+ let wrapper_stem = wrapper_path.file_stem()?;
+
+ if VALID_WRAPPERS.contains(&wrapper_stem.to_str()?) {
+ Some(rustc_wrapper.to_str()?.to_owned())
+ } else {
+ None
+ }
+ }
+
+ /// Returns compiler path, optional modifier name from whitelist, and arguments vec
+ fn env_tool(&self, name: &str) -> Option<(PathBuf, Option<String>, Vec<String>)> {
+ let tool = match self.getenv_with_target_prefixes(name) {
+ Ok(tool) => tool,
+ Err(_) => return None,
+ };
+
+ // If this is an exact path on the filesystem we don't want to do any
+ // interpretation at all, just pass it on through. This'll hopefully get
+ // us to support spaces-in-paths.
+ if Path::new(&*tool).exists() {
+ return Some((PathBuf::from(&*tool), None, Vec::new()));
+ }
+
+ // Ok now we want to handle a couple of scenarios. We'll assume from
+ // here on out that spaces are splitting separate arguments. Two major
+ // features we want to support are:
+ //
+ // CC='sccache cc'
+ //
+ // aka using `sccache` or any other wrapper/caching-like-thing for
+ // compilations. We want to know what the actual compiler is still,
+ // though, because our `Tool` API support introspection of it to see
+ // what compiler is in use.
+ //
+ // additionally we want to support
+ //
+ // CC='cc -flag'
+ //
+ // where the CC env var is used to also pass default flags to the C
+ // compiler.
+ //
+ // It's true that everything here is a bit of a pain, but apparently if
+ // you're not literally make or bash then you get a lot of bug reports.
+ let known_wrappers = ["ccache", "distcc", "sccache", "icecc", "cachepot"];
+
+ let mut parts = tool.split_whitespace();
+ let maybe_wrapper = match parts.next() {
+ Some(s) => s,
+ None => return None,
+ };
+
+ let file_stem = Path::new(maybe_wrapper)
+ .file_stem()
+ .unwrap()
+ .to_str()
+ .unwrap();
+ if known_wrappers.contains(&file_stem) {
+ if let Some(compiler) = parts.next() {
+ return Some((
+ compiler.into(),
+ Some(maybe_wrapper.to_string()),
+ parts.map(|s| s.to_string()).collect(),
+ ));
+ }
+ }
+
+ Some((
+ maybe_wrapper.into(),
+ Self::rustc_wrapper_fallback(),
+ parts.map(|s| s.to_string()).collect(),
+ ))
+ }
+
+ /// Returns the C++ standard library:
+ /// 1. If [cpp_link_stdlib](cc::Build::cpp_link_stdlib) is set, uses its value.
+ /// 2. Else if the `CXXSTDLIB` environment variable is set, uses its value.
+ /// 3. Else the default is `libc++` for OS X and BSDs, `libc++_shared` for Android,
+ /// `None` for MSVC and `libstdc++` for anything else.
+ fn get_cpp_link_stdlib(&self) -> Result<Option<String>, Error> {
+ match &self.cpp_link_stdlib {
+ Some(s) => Ok(s.as_ref().map(|s| (*s).to_string())),
+ None => {
+ if let Ok(stdlib) = self.getenv_with_target_prefixes("CXXSTDLIB") {
+ if stdlib.is_empty() {
+ Ok(None)
+ } else {
+ Ok(Some(stdlib.to_string()))
+ }
+ } else {
+ let target = self.get_target()?;
+ if target.contains("msvc") {
+ Ok(None)
+ } else if target.contains("apple") {
+ Ok(Some("c++".to_string()))
+ } else if target.contains("freebsd") {
+ Ok(Some("c++".to_string()))
+ } else if target.contains("openbsd") {
+ Ok(Some("c++".to_string()))
+ } else if target.contains("aix") {
+ Ok(Some("c++".to_string()))
+ } else if target.contains("android") {
+ Ok(Some("c++_shared".to_string()))
+ } else {
+ Ok(Some("stdc++".to_string()))
+ }
+ }
+ }
+ }
+ }
+
+ fn get_ar(&self) -> Result<(Command, String, bool), Error> {
+ self.try_get_archiver_and_flags()
+ }
+
+ /// Get the archiver (ar) that's in use for this configuration.
+ ///
+ /// You can use [`Command::get_program`] to get just the path to the command.
+ ///
+ /// This method will take into account all configuration such as debug
+ /// information, optimization level, include directories, defines, etc.
+ /// Additionally, the compiler binary in use follows the standard
+ /// conventions for this path, e.g. looking at the explicitly set compiler,
+ /// environment variables (a number of which are inspected here), and then
+ /// falling back to the default configuration.
+ ///
+ /// # Panics
+ ///
+ /// Panics if an error occurred while determining the architecture.
+ pub fn get_archiver(&self) -> Command {
+ match self.try_get_archiver() {
+ Ok(tool) => tool,
+ Err(e) => fail(&e.message),
+ }
+ }
+
+ /// Get the archiver that's in use for this configuration.
+ ///
+ /// This will return a result instead of panicing;
+ /// see [`get_archiver()`] for the complete description.
+ pub fn try_get_archiver(&self) -> Result<Command, Error> {
+ Ok(self.try_get_archiver_and_flags()?.0)
+ }
+
+ fn try_get_archiver_and_flags(&self) -> Result<(Command, String, bool), Error> {
+ let (mut cmd, name) = self.get_base_archiver()?;
+ let mut any_flags = false;
+ if let Ok(flags) = self.envflags("ARFLAGS") {
+ any_flags = any_flags | !flags.is_empty();
+ cmd.args(flags);
+ }
+ for flag in &self.ar_flags {
+ any_flags = true;
+ cmd.arg(&**flag);
+ }
+ Ok((cmd, name, any_flags))
+ }
+
+ fn get_base_archiver(&self) -> Result<(Command, String), Error> {
+ if let Some(ref a) = self.archiver {
+ return Ok((self.cmd(&**a), a.to_string_lossy().into_owned()));
+ }
+
+ self.get_base_archiver_variant("AR", "ar")
+ }
+
+ /// Get the ranlib that's in use for this configuration.
+ ///
+ /// You can use [`Command::get_program`] to get just the path to the command.
+ ///
+ /// This method will take into account all configuration such as debug
+ /// information, optimization level, include directories, defines, etc.
+ /// Additionally, the compiler binary in use follows the standard
+ /// conventions for this path, e.g. looking at the explicitly set compiler,
+ /// environment variables (a number of which are inspected here), and then
+ /// falling back to the default configuration.
+ ///
+ /// # Panics
+ ///
+ /// Panics if an error occurred while determining the architecture.
+ pub fn get_ranlib(&self) -> Command {
+ match self.try_get_ranlib() {
+ Ok(tool) => tool,
+ Err(e) => fail(&e.message),
+ }
+ }
+
+ /// Get the ranlib that's in use for this configuration.
+ ///
+ /// This will return a result instead of panicing;
+ /// see [`get_ranlib()`] for the complete description.
+ pub fn try_get_ranlib(&self) -> Result<Command, Error> {
+ let mut cmd = self.get_base_ranlib()?;
+ if let Ok(flags) = self.envflags("RANLIBFLAGS") {
+ cmd.args(flags);
+ }
+ Ok(cmd)
+ }
+
+ fn get_base_ranlib(&self) -> Result<Command, Error> {
+ if let Some(ref r) = self.ranlib {
+ return Ok(self.cmd(&**r));
+ }
+
+ Ok(self.get_base_archiver_variant("RANLIB", "ranlib")?.0)
+ }
+
+ fn get_base_archiver_variant(&self, env: &str, tool: &str) -> Result<(Command, String), Error> {
+ let target = self.get_target()?;
+ let mut name = String::new();
+ let tool_opt: Option<Command> = self
+ .env_tool(env)
+ .map(|(tool, _wrapper, args)| {
+ let mut cmd = self.cmd(tool);
+ cmd.args(args);
+ cmd
+ })
+ .or_else(|| {
+ if target.contains("emscripten") {
+ // Windows use bat files so we have to be a bit more specific
+ if cfg!(windows) {
+ let mut cmd = self.cmd("cmd");
+ name = format!("em{}.bat", tool);
+ cmd.arg("/c").arg(&name);
+ Some(cmd)
+ } else {
+ name = format!("em{}", tool);
+ Some(self.cmd(&name))
+ }
+ } else if target.starts_with("wasm32") {
+ // Formally speaking one should be able to use this approach,
+ // parsing -print-search-dirs output, to cover all clang targets,
+ // including Android SDKs and other cross-compilation scenarios...
+ // And even extend it to gcc targets by seaching for "ar" instead
+ // of "llvm-ar"...
+ let compiler = self.get_base_compiler().ok()?;
+ if compiler.family == ToolFamily::Clang {
+ name = format!("llvm-{}", tool);
+ search_programs(&mut self.cmd(&compiler.path), &name)
+ .map(|name| self.cmd(&name))
+ } else {
+ None
+ }
+ } else {
+ None
+ }
+ });
+
+ let default = tool.to_string();
+ let tool = match tool_opt {
+ Some(t) => t,
+ None => {
+ if target.contains("android") {
+ name = format!("{}-{}", target.replace("armv7", "arm"), tool);
+ self.cmd(&name)
+ } else if target.contains("msvc") {
+ // NOTE: There isn't really a ranlib on msvc, so arguably we should return
+ // `None` somehow here. But in general, callers will already have to be aware
+ // of not running ranlib on Windows anyway, so it feels okay to return lib.exe
+ // here.
+
+ let compiler = self.get_base_compiler()?;
+ let mut lib = String::new();
+ if compiler.family == (ToolFamily::Msvc { clang_cl: true }) {
+ // See if there is 'llvm-lib' next to 'clang-cl'
+ // Another possibility could be to see if there is 'clang'
+ // next to 'clang-cl' and use 'search_programs()' to locate
+ // 'llvm-lib'. This is because 'clang-cl' doesn't support
+ // the -print-search-dirs option.
+ if let Some(mut cmd) = which(&compiler.path, None) {
+ cmd.pop();
+ cmd.push("llvm-lib.exe");
+ if let Some(llvm_lib) = which(&cmd, None) {
+ lib = llvm_lib.to_str().unwrap().to_owned();
+ }
+ }
+ }
+
+ if lib.is_empty() {
+ name = String::from("lib.exe");
+ match windows_registry::find(&target, "lib.exe") {
+ Some(t) => t,
+ None => self.cmd("lib.exe"),
+ }
+ } else {
+ name = lib;
+ self.cmd(&name)
+ }
+ } else if target.contains("illumos") {
+ // The default 'ar' on illumos uses a non-standard flags,
+ // but the OS comes bundled with a GNU-compatible variant.
+ //
+ // Use the GNU-variant to match other Unix systems.
+ name = format!("g{}", tool);
+ self.cmd(&name)
+ } else if self.get_host()? != target {
+ match self.prefix_for_target(&target) {
+ Some(p) => {
+ // GCC uses $target-gcc-ar, whereas binutils uses $target-ar -- try both.
+ // Prefer -ar if it exists, as builds of `-gcc-ar` have been observed to be
+ // outright broken (such as when targetting freebsd with `--disable-lto`
+ // toolchain where the archiver attempts to load the LTO plugin anyway but
+ // fails to find one).
+ //
+ // The same applies to ranlib.
+ let mut chosen = default;
+ for &infix in &["", "-gcc"] {
+ let target_p = format!("{}{}-{}", p, infix, tool);
+ if Command::new(&target_p).output().is_ok() {
+ chosen = target_p;
+ break;
+ }
+ }
+ name = chosen;
+ self.cmd(&name)
+ }
+ None => {
+ name = default;
+ self.cmd(&name)
+ }
+ }
+ } else {
+ name = default;
+ self.cmd(&name)
+ }
+ }
+ };
+
+ Ok((tool, name))
+ }
+
+ fn prefix_for_target(&self, target: &str) -> Option<String> {
+ // Put aside RUSTC_LINKER's prefix to be used as second choice, after CROSS_COMPILE
+ let linker_prefix = self
+ .getenv("RUSTC_LINKER")
+ .and_then(|var| var.strip_suffix("-gcc").map(str::to_string));
+ // CROSS_COMPILE is of the form: "arm-linux-gnueabi-"
+ let cc_env = self.getenv("CROSS_COMPILE");
+ let cross_compile = cc_env.as_ref().map(|s| s.trim_end_matches('-').to_owned());
+ cross_compile.or(linker_prefix).or(match &target[..] {
+ // Note: there is no `aarch64-pc-windows-gnu` target, only `-gnullvm`
+ "aarch64-pc-windows-gnullvm" => Some("aarch64-w64-mingw32"),
+ "aarch64-uwp-windows-gnu" => Some("aarch64-w64-mingw32"),
+ "aarch64-unknown-linux-gnu" => Some("aarch64-linux-gnu"),
+ "aarch64-unknown-linux-musl" => Some("aarch64-linux-musl"),
+ "aarch64-unknown-netbsd" => Some("aarch64--netbsd"),
+ "arm-unknown-linux-gnueabi" => Some("arm-linux-gnueabi"),
+ "armv4t-unknown-linux-gnueabi" => Some("arm-linux-gnueabi"),
+ "armv5te-unknown-linux-gnueabi" => Some("arm-linux-gnueabi"),
+ "armv5te-unknown-linux-musleabi" => Some("arm-linux-gnueabi"),
+ "arm-frc-linux-gnueabi" => Some("arm-frc-linux-gnueabi"),
+ "arm-unknown-linux-gnueabihf" => Some("arm-linux-gnueabihf"),
+ "arm-unknown-linux-musleabi" => Some("arm-linux-musleabi"),
+ "arm-unknown-linux-musleabihf" => Some("arm-linux-musleabihf"),
+ "arm-unknown-netbsd-eabi" => Some("arm--netbsdelf-eabi"),
+ "armv6-unknown-netbsd-eabihf" => Some("armv6--netbsdelf-eabihf"),
+ "armv7-unknown-linux-gnueabi" => Some("arm-linux-gnueabi"),
+ "armv7-unknown-linux-gnueabihf" => Some("arm-linux-gnueabihf"),
+ "armv7-unknown-linux-musleabihf" => Some("arm-linux-musleabihf"),
+ "armv7neon-unknown-linux-gnueabihf" => Some("arm-linux-gnueabihf"),
+ "armv7neon-unknown-linux-musleabihf" => Some("arm-linux-musleabihf"),
+ "thumbv7-unknown-linux-gnueabihf" => Some("arm-linux-gnueabihf"),
+ "thumbv7-unknown-linux-musleabihf" => Some("arm-linux-musleabihf"),
+ "thumbv7neon-unknown-linux-gnueabihf" => Some("arm-linux-gnueabihf"),
+ "thumbv7neon-unknown-linux-musleabihf" => Some("arm-linux-musleabihf"),
+ "armv7-unknown-netbsd-eabihf" => Some("armv7--netbsdelf-eabihf"),
+ "hexagon-unknown-linux-musl" => Some("hexagon-linux-musl"),
+ "i586-unknown-linux-musl" => Some("musl"),
+ "i686-pc-windows-gnu" => Some("i686-w64-mingw32"),
+ "i686-uwp-windows-gnu" => Some("i686-w64-mingw32"),
+ "i686-unknown-linux-gnu" => self.find_working_gnu_prefix(&[
+ "i686-linux-gnu",
+ "x86_64-linux-gnu", // transparently support gcc-multilib
+ ]), // explicit None if not found, so caller knows to fall back
+ "i686-unknown-linux-musl" => Some("musl"),
+ "i686-unknown-netbsd" => Some("i486--netbsdelf"),
+ "loongarch64-unknown-linux-gnu" => Some("loongarch64-linux-gnu"),
+ "mips-unknown-linux-gnu" => Some("mips-linux-gnu"),
+ "mips-unknown-linux-musl" => Some("mips-linux-musl"),
+ "mipsel-unknown-linux-gnu" => Some("mipsel-linux-gnu"),
+ "mipsel-unknown-linux-musl" => Some("mipsel-linux-musl"),
+ "mips64-unknown-linux-gnuabi64" => Some("mips64-linux-gnuabi64"),
+ "mips64el-unknown-linux-gnuabi64" => Some("mips64el-linux-gnuabi64"),
+ "mipsisa32r6-unknown-linux-gnu" => Some("mipsisa32r6-linux-gnu"),
+ "mipsisa32r6el-unknown-linux-gnu" => Some("mipsisa32r6el-linux-gnu"),
+ "mipsisa64r6-unknown-linux-gnuabi64" => Some("mipsisa64r6-linux-gnuabi64"),
+ "mipsisa64r6el-unknown-linux-gnuabi64" => Some("mipsisa64r6el-linux-gnuabi64"),
+ "powerpc-unknown-linux-gnu" => Some("powerpc-linux-gnu"),
+ "powerpc-unknown-linux-gnuspe" => Some("powerpc-linux-gnuspe"),
+ "powerpc-unknown-netbsd" => Some("powerpc--netbsd"),
+ "powerpc64-unknown-linux-gnu" => Some("powerpc-linux-gnu"),
+ "powerpc64le-unknown-linux-gnu" => Some("powerpc64le-linux-gnu"),
+ "riscv32i-unknown-none-elf" => self.find_working_gnu_prefix(&[
+ "riscv32-unknown-elf",
+ "riscv64-unknown-elf",
+ "riscv-none-embed",
+ ]),
+ "riscv32imac-unknown-none-elf" => self.find_working_gnu_prefix(&[
+ "riscv32-unknown-elf",
+ "riscv64-unknown-elf",
+ "riscv-none-embed",
+ ]),
+ "riscv32imac-unknown-xous-elf" => self.find_working_gnu_prefix(&[
+ "riscv32-unknown-elf",
+ "riscv64-unknown-elf",
+ "riscv-none-embed",
+ ]),
+ "riscv32imc-esp-espidf" => Some("riscv32-esp-elf"),
+ "riscv32imc-unknown-none-elf" => self.find_working_gnu_prefix(&[
+ "riscv32-unknown-elf",
+ "riscv64-unknown-elf",
+ "riscv-none-embed",
+ ]),
+ "riscv64gc-unknown-none-elf" => self.find_working_gnu_prefix(&[
+ "riscv64-unknown-elf",
+ "riscv32-unknown-elf",
+ "riscv-none-embed",
+ ]),
+ "riscv64imac-unknown-none-elf" => self.find_working_gnu_prefix(&[
+ "riscv64-unknown-elf",
+ "riscv32-unknown-elf",
+ "riscv-none-embed",
+ ]),
+ "riscv64gc-unknown-linux-gnu" => Some("riscv64-linux-gnu"),
+ "riscv32gc-unknown-linux-gnu" => Some("riscv32-linux-gnu"),
+ "riscv64gc-unknown-linux-musl" => Some("riscv64-linux-musl"),
+ "riscv32gc-unknown-linux-musl" => Some("riscv32-linux-musl"),
+ "riscv64gc-unknown-netbsd" => Some("riscv64--netbsd"),
+ "s390x-unknown-linux-gnu" => Some("s390x-linux-gnu"),
+ "sparc-unknown-linux-gnu" => Some("sparc-linux-gnu"),
+ "sparc64-unknown-linux-gnu" => Some("sparc64-linux-gnu"),
+ "sparc64-unknown-netbsd" => Some("sparc64--netbsd"),
+ "sparcv9-sun-solaris" => Some("sparcv9-sun-solaris"),
+ "armv7a-none-eabi" => Some("arm-none-eabi"),
+ "armv7a-none-eabihf" => Some("arm-none-eabi"),
+ "armebv7r-none-eabi" => Some("arm-none-eabi"),
+ "armebv7r-none-eabihf" => Some("arm-none-eabi"),
+ "armv7r-none-eabi" => Some("arm-none-eabi"),
+ "armv7r-none-eabihf" => Some("arm-none-eabi"),
+ "thumbv6m-none-eabi" => Some("arm-none-eabi"),
+ "thumbv7em-none-eabi" => Some("arm-none-eabi"),
+ "thumbv7em-none-eabihf" => Some("arm-none-eabi"),
+ "thumbv7m-none-eabi" => Some("arm-none-eabi"),
+ "thumbv8m.base-none-eabi" => Some("arm-none-eabi"),
+ "thumbv8m.main-none-eabi" => Some("arm-none-eabi"),
+ "thumbv8m.main-none-eabihf" => Some("arm-none-eabi"),
+ "x86_64-pc-windows-gnu" => Some("x86_64-w64-mingw32"),
+ "x86_64-pc-windows-gnullvm" => Some("x86_64-w64-mingw32"),
+ "x86_64-uwp-windows-gnu" => Some("x86_64-w64-mingw32"),
+ "x86_64-rumprun-netbsd" => Some("x86_64-rumprun-netbsd"),
+ "x86_64-unknown-linux-gnu" => self.find_working_gnu_prefix(&[
+ "x86_64-linux-gnu", // rustfmt wrap
+ ]), // explicit None if not found, so caller knows to fall back
+ "x86_64-unknown-linux-musl" => Some("musl"),
+ "x86_64-unknown-netbsd" => Some("x86_64--netbsd"),
+ _ => None,
+ }
+ .map(|x| x.to_owned()))
+ }
+
+ /// Some platforms have multiple, compatible, canonical prefixes. Look through
+ /// each possible prefix for a compiler that exists and return it. The prefixes
+ /// should be ordered from most-likely to least-likely.
+ fn find_working_gnu_prefix(&self, prefixes: &[&'static str]) -> Option<&'static str> {
+ let suffix = if self.cpp { "-g++" } else { "-gcc" };
+ let extension = std::env::consts::EXE_SUFFIX;
+
+ // Loop through PATH entries searching for each toolchain. This ensures that we
+ // are more likely to discover the toolchain early on, because chances are good
+ // that the desired toolchain is in one of the higher-priority paths.
+ env::var_os("PATH")
+ .as_ref()
+ .and_then(|path_entries| {
+ env::split_paths(path_entries).find_map(|path_entry| {
+ for prefix in prefixes {
+ let target_compiler = format!("{}{}{}", prefix, suffix, extension);
+ if path_entry.join(&target_compiler).exists() {
+ return Some(prefix);
+ }
+ }
+ None
+ })
+ })
+ .map(|prefix| *prefix)
+ .or_else(||
+ // If no toolchain was found, provide the first toolchain that was passed in.
+ // This toolchain has been shown not to exist, however it will appear in the
+ // error that is shown to the user which should make it easier to search for
+ // where it should be obtained.
+ prefixes.first().map(|prefix| *prefix))
+ }
+
+ fn get_target(&self) -> Result<Arc<str>, Error> {
+ match &self.target {
+ Some(t) => Ok(t.clone()),
+ None => self.getenv_unwrap("TARGET"),
+ }
+ }
+
+ fn get_host(&self) -> Result<Arc<str>, Error> {
+ match &self.host {
+ Some(h) => Ok(h.clone()),
+ None => self.getenv_unwrap("HOST"),
+ }
+ }
+
+ fn get_opt_level(&self) -> Result<Arc<str>, Error> {
+ match &self.opt_level {
+ Some(ol) => Ok(ol.clone()),
+ None => self.getenv_unwrap("OPT_LEVEL"),
+ }
+ }
+
+ fn get_debug(&self) -> bool {
+ self.debug.unwrap_or_else(|| match self.getenv("DEBUG") {
+ Some(s) => &*s != "false",
+ None => false,
+ })
+ }
+
+ fn get_dwarf_version(&self) -> Option<u32> {
+ // Tentatively matches the DWARF version defaults as of rustc 1.62.
+ let target = self.get_target().ok()?;
+ if target.contains("android")
+ || target.contains("apple")
+ || target.contains("dragonfly")
+ || target.contains("freebsd")
+ || target.contains("netbsd")
+ || target.contains("openbsd")
+ || target.contains("windows-gnu")
+ {
+ Some(2)
+ } else if target.contains("linux") {
+ Some(4)
+ } else {
+ None
+ }
+ }
+
+ fn get_force_frame_pointer(&self) -> bool {
+ self.force_frame_pointer.unwrap_or_else(|| self.get_debug())
+ }
+
+ fn get_out_dir(&self) -> Result<Cow<'_, Path>, Error> {
+ match &self.out_dir {
+ Some(p) => Ok(Cow::Borrowed(&**p)),
+ None => env::var_os("OUT_DIR")
+ .map(PathBuf::from)
+ .map(Cow::Owned)
+ .ok_or_else(|| {
+ Error::new(
+ ErrorKind::EnvVarNotFound,
+ "Environment variable OUT_DIR not defined.",
+ )
+ }),
+ }
+ }
+
+ fn getenv(&self, v: &str) -> Option<Arc<str>> {
+ // Returns true for environment variables cargo sets for build scripts:
+ // https://doc.rust-lang.org/cargo/reference/environment-variables.html#environment-variables-cargo-sets-for-build-scripts
+ //
+ // This handles more of the vars than we actually use (it tries to check
+ // complete-ish set), just to avoid needing maintenance if/when new
+ // calls to `getenv`/`getenv_unwrap` are added.
+ fn provided_by_cargo(envvar: &str) -> bool {
+ match envvar {
+ v if v.starts_with("CARGO") || v.starts_with("RUSTC") => true,
+ "HOST" | "TARGET" | "RUSTDOC" | "OUT_DIR" | "OPT_LEVEL" | "DEBUG" | "PROFILE"
+ | "NUM_JOBS" | "RUSTFLAGS" => true,
+ _ => false,
+ }
+ }
+ let mut cache = self.env_cache.lock().unwrap();
+ if let Some(val) = cache.get(v) {
+ return val.clone();
+ }
+ if self.emit_rerun_if_env_changed && !provided_by_cargo(v) {
+ self.print(&format_args!("cargo:rerun-if-env-changed={}", v));
+ }
+ let r = env::var(v).ok().map(Arc::from);
+ self.print(&format_args!("{} = {:?}", v, r));
+ cache.insert(v.to_string(), r.clone());
+ r
+ }
+
+ fn getenv_unwrap(&self, v: &str) -> Result<Arc<str>, Error> {
+ match self.getenv(v) {
+ Some(s) => Ok(s),
+ None => Err(Error::new(
+ ErrorKind::EnvVarNotFound,
+ format!("Environment variable {} not defined.", v),
+ )),
+ }
+ }
+
+ fn getenv_with_target_prefixes(&self, var_base: &str) -> Result<Arc<str>, Error> {
+ let target = self.get_target()?;
+ let host = self.get_host()?;
+ let kind = if host == target { "HOST" } else { "TARGET" };
+ let target_u = target.replace("-", "_");
+ let res = self
+ .getenv(&format!("{}_{}", var_base, target))
+ .or_else(|| self.getenv(&format!("{}_{}", var_base, target_u)))
+ .or_else(|| self.getenv(&format!("{}_{}", kind, var_base)))
+ .or_else(|| self.getenv(var_base));
+
+ match res {
+ Some(res) => Ok(res),
+ None => Err(Error::new(
+ ErrorKind::EnvVarNotFound,
+ format!("Could not find environment variable {}.", var_base),
+ )),
+ }
+ }
+
+ fn envflags(&self, name: &str) -> Result<Vec<String>, Error> {
+ Ok(self
+ .getenv_with_target_prefixes(name)?
+ .split_ascii_whitespace()
+ .map(|slice| slice.to_string())
+ .collect())
+ }
+
+ fn print(&self, s: &dyn Display) {
+ if self.cargo_metadata {
+ println!("{}", s);
+ }
+ }
+
+ fn fix_env_for_apple_os(&self, cmd: &mut Command) -> Result<(), Error> {
+ let target = self.get_target()?;
+ let host = self.get_host()?;
+ if host.contains("apple-darwin") && target.contains("apple-darwin") {
+ // If, for example, `cargo` runs during the build of an XCode project, then `SDKROOT` environment variable
+ // would represent the current target, and this is the problem for us, if we want to compile something
+ // for the host, when host != target.
+ // We can not just remove `SDKROOT`, because, again, for example, XCode add to PATH
+ // /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
+ // and `cc` from this path can not find system include files, like `pthread.h`, if `SDKROOT`
+ // is not set
+ if let Ok(sdkroot) = env::var("SDKROOT") {
+ if !sdkroot.contains("MacOSX") {
+ let macos_sdk = self.apple_sdk_root("macosx")?;
+ cmd.env("SDKROOT", macos_sdk);
+ }
+ }
+ // Additionally, `IPHONEOS_DEPLOYMENT_TARGET` must not be set when using the Xcode linker at
+ // "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld",
+ // although this is apparently ignored when using the linker at "/usr/bin/ld".
+ cmd.env_remove("IPHONEOS_DEPLOYMENT_TARGET");
+ }
+ Ok(())
+ }
+
+ fn apple_sdk_root(&self, sdk: &str) -> Result<OsString, Error> {
+ let mut cache = self
+ .apple_sdk_root_cache
+ .lock()
+ .expect("apple_sdk_root_cache lock failed");
+ if let Some(ret) = cache.get(sdk) {
+ return Ok(ret.clone());
+ }
+
+ let sdk_path = run_output(
+ self.cmd("xcrun")
+ .arg("--show-sdk-path")
+ .arg("--sdk")
+ .arg(sdk),
+ "xcrun",
+ )?;
+
+ let sdk_path = match String::from_utf8(sdk_path) {
+ Ok(p) => p,
+ Err(_) => {
+ return Err(Error::new(
+ ErrorKind::IOError,
+ "Unable to determine Apple SDK path.",
+ ));
+ }
+ };
+ let ret: OsString = sdk_path.trim().into();
+ cache.insert(sdk.into(), ret.clone());
+ Ok(ret)
+ }
+
+ fn cuda_file_count(&self) -> usize {
+ self.files
+ .iter()
+ .filter(|file| file.extension() == Some(OsStr::new("cu")))
+ .count()
+ }
+}
+
+impl Default for Build {
+ fn default() -> Build {
+ Build::new()
+ }
+}
+
+impl Tool {
+ fn new(path: PathBuf) -> Self {
+ Tool::with_features(path, None, false)
+ }
+
+ fn with_clang_driver(path: PathBuf, clang_driver: Option<&str>) -> Self {
+ Self::with_features(path, clang_driver, false)
+ }
+
+ #[cfg(windows)]
+ /// Explicitly set the `ToolFamily`, skipping name-based detection.
+ fn with_family(path: PathBuf, family: ToolFamily) -> Self {
+ Self {
+ path: path,
+ cc_wrapper_path: None,
+ cc_wrapper_args: Vec::new(),
+ args: Vec::new(),
+ env: Vec::new(),
+ family: family,
+ cuda: false,
+ removed_args: Vec::new(),
+ }
+ }
+
+ fn with_features(path: PathBuf, clang_driver: Option<&str>, cuda: bool) -> Self {
+ // Try to detect family of the tool from its name, falling back to Gnu.
+ let family = if let Some(fname) = path.file_name().and_then(|p| p.to_str()) {
+ if fname.contains("clang-cl") {
+ ToolFamily::Msvc { clang_cl: true }
+ } else if fname.ends_with("cl") || fname == "cl.exe" {
+ ToolFamily::Msvc { clang_cl: false }
+ } else if fname.contains("clang") {
+ match clang_driver {
+ Some("cl") => ToolFamily::Msvc { clang_cl: true },
+ _ => ToolFamily::Clang,
+ }
+ } else {
+ ToolFamily::Gnu
+ }
+ } else {
+ ToolFamily::Gnu
+ };
+
+ Tool {
+ path: path,
+ cc_wrapper_path: None,
+ cc_wrapper_args: Vec::new(),
+ args: Vec::new(),
+ env: Vec::new(),
+ family: family,
+ cuda: cuda,
+ removed_args: Vec::new(),
+ }
+ }
+
+ /// Add an argument to be stripped from the final command arguments.
+ fn remove_arg(&mut self, flag: OsString) {
+ self.removed_args.push(flag);
+ }
+
+ /// Push an "exotic" flag to the end of the compiler's arguments list.
+ ///
+ /// Nvidia compiler accepts only the most common compiler flags like `-D`,
+ /// `-I`, `-c`, etc. Options meant specifically for the underlying
+ /// host C++ compiler have to be prefixed with '-Xcompiler`.
+ /// [Another possible future application for this function is passing
+ /// clang-specific flags to clang-cl, which otherwise accepts only
+ /// MSVC-specific options.]
+ fn push_cc_arg(&mut self, flag: OsString) {
+ if self.cuda {
+ self.args.push("-Xcompiler".into());
+ }
+ self.args.push(flag);
+ }
+
+ /// Checks if an argument or flag has already been specified or conflicts.
+ ///
+ /// Currently only checks optimization flags.
+ fn is_duplicate_opt_arg(&self, flag: &OsString) -> bool {
+ let flag = flag.to_str().unwrap();
+ let mut chars = flag.chars();
+
+ // Only duplicate check compiler flags
+ if self.is_like_msvc() {
+ if chars.next() != Some('/') {
+ return false;
+ }
+ } else if self.is_like_gnu() || self.is_like_clang() {
+ if chars.next() != Some('-') {
+ return false;
+ }
+ }
+
+ // Check for existing optimization flags (-O, /O)
+ if chars.next() == Some('O') {
+ return self
+ .args()
+ .iter()
+ .any(|ref a| a.to_str().unwrap_or("").chars().nth(1) == Some('O'));
+ }
+
+ // TODO Check for existing -m..., -m...=..., /arch:... flags
+ return false;
+ }
+
+ /// Don't push optimization arg if it conflicts with existing args.
+ fn push_opt_unless_duplicate(&mut self, flag: OsString) {
+ if self.is_duplicate_opt_arg(&flag) {
+ println!("Info: Ignoring duplicate arg {:?}", &flag);
+ } else {
+ self.push_cc_arg(flag);
+ }
+ }
+
+ /// Converts this compiler into a `Command` that's ready to be run.
+ ///
+ /// This is useful for when the compiler needs to be executed and the
+ /// command returned will already have the initial arguments and environment
+ /// variables configured.
+ pub fn to_command(&self) -> Command {
+ let mut cmd = match self.cc_wrapper_path {
+ Some(ref cc_wrapper_path) => {
+ let mut cmd = Command::new(&cc_wrapper_path);
+ cmd.arg(&self.path);
+ cmd
+ }
+ None => Command::new(&self.path),
+ };
+ cmd.args(&self.cc_wrapper_args);
+
+ let value = self
+ .args
+ .iter()
+ .filter(|a| !self.removed_args.contains(a))
+ .collect::<Vec<_>>();
+ cmd.args(&value);
+
+ for &(ref k, ref v) in self.env.iter() {
+ cmd.env(k, v);
+ }
+ cmd
+ }
+
+ /// Returns the path for this compiler.
+ ///
+ /// Note that this may not be a path to a file on the filesystem, e.g. "cc",
+ /// but rather something which will be resolved when a process is spawned.
+ pub fn path(&self) -> &Path {
+ &self.path
+ }
+
+ /// Returns the default set of arguments to the compiler needed to produce
+ /// executables for the target this compiler generates.
+ pub fn args(&self) -> &[OsString] {
+ &self.args
+ }
+
+ /// Returns the set of environment variables needed for this compiler to
+ /// operate.
+ ///
+ /// This is typically only used for MSVC compilers currently.
+ pub fn env(&self) -> &[(OsString, OsString)] {
+ &self.env
+ }
+
+ /// Returns the compiler command in format of CC environment variable.
+ /// Or empty string if CC env was not present
+ ///
+ /// This is typically used by configure script
+ pub fn cc_env(&self) -> OsString {
+ match self.cc_wrapper_path {
+ Some(ref cc_wrapper_path) => {
+ let mut cc_env = cc_wrapper_path.as_os_str().to_owned();
+ cc_env.push(" ");
+ cc_env.push(self.path.to_path_buf().into_os_string());
+ for arg in self.cc_wrapper_args.iter() {
+ cc_env.push(" ");
+ cc_env.push(arg);
+ }
+ cc_env
+ }
+ None => OsString::from(""),
+ }
+ }
+
+ /// Returns the compiler flags in format of CFLAGS environment variable.
+ /// Important here - this will not be CFLAGS from env, its internal gcc's flags to use as CFLAGS
+ /// This is typically used by configure script
+ pub fn cflags_env(&self) -> OsString {
+ let mut flags = OsString::new();
+ for (i, arg) in self.args.iter().enumerate() {
+ if i > 0 {
+ flags.push(" ");
+ }
+ flags.push(arg);
+ }
+ flags
+ }
+
+ /// Whether the tool is GNU Compiler Collection-like.
+ pub fn is_like_gnu(&self) -> bool {
+ self.family == ToolFamily::Gnu
+ }
+
+ /// Whether the tool is Clang-like.
+ pub fn is_like_clang(&self) -> bool {
+ self.family == ToolFamily::Clang
+ }
+
+ /// Whether the tool is MSVC-like.
+ pub fn is_like_msvc(&self) -> bool {
+ match self.family {
+ ToolFamily::Msvc { .. } => true,
+ _ => false,
+ }
+ }
+}
+
+fn wait_on_child(cmd: &Command, program: &str, child: &mut Child) -> Result<(), Error> {
+ let status = match child.wait() {
+ Ok(s) => s,
+ Err(e) => {
+ return Err(Error::new(
+ ErrorKind::ToolExecError,
+ format!(
+ "Failed to wait on spawned child process, command {:?} with args {:?}: {}.",
+ cmd, program, e
+ ),
+ ));
+ }
+ };
+ println!("{}", status);
+
+ if status.success() {
+ Ok(())
+ } else {
+ Err(Error::new(
+ ErrorKind::ToolExecError,
+ format!(
+ "Command {:?} with args {:?} did not execute successfully (status code {}).",
+ cmd, program, status
+ ),
+ ))
+ }
+}
+
+#[cfg(feature = "parallel")]
+fn try_wait_on_child(
+ cmd: &Command,
+ program: &str,
+ child: &mut Child,
+ stdout: &mut dyn io::Write,
+) -> Result<Option<()>, Error> {
+ match child.try_wait() {
+ Ok(Some(status)) => {
+ let _ = writeln!(stdout, "{}", status);
+
+ if status.success() {
+ Ok(Some(()))
+ } else {
+ Err(Error::new(
+ ErrorKind::ToolExecError,
+ format!(
+ "Command {:?} with args {:?} did not execute successfully (status code {}).",
+ cmd, program, status
+ ),
+ ))
+ }
+ }
+ Ok(None) => Ok(None),
+ Err(e) => Err(Error::new(
+ ErrorKind::ToolExecError,
+ format!(
+ "Failed to wait on spawned child process, command {:?} with args {:?}: {}.",
+ cmd, program, e
+ ),
+ )),
+ }
+}
+
+fn run_inner(cmd: &mut Command, program: &str, pipe_writer: File) -> Result<(), Error> {
+ let mut child = spawn(cmd, program, pipe_writer)?;
+ wait_on_child(cmd, program, &mut child)
+}
+
+fn run(cmd: &mut Command, program: &str, print: &PrintThread) -> Result<(), Error> {
+ run_inner(cmd, program, print.pipe_writer_cloned()?.unwrap())?;
+
+ Ok(())
+}
+
+fn run_output(cmd: &mut Command, program: &str) -> Result<Vec<u8>, Error> {
+ cmd.stdout(Stdio::piped());
+
+ let mut print = PrintThread::new()?;
+ let mut child = spawn(cmd, program, print.pipe_writer().take().unwrap())?;
+
+ let mut stdout = vec![];
+ child
+ .stdout
+ .take()
+ .unwrap()
+ .read_to_end(&mut stdout)
+ .unwrap();
+
+ wait_on_child(cmd, program, &mut child)?;
+
+ Ok(stdout)
+}
+
+fn spawn(cmd: &mut Command, program: &str, pipe_writer: File) -> Result<Child, Error> {
+ struct ResetStderr<'cmd>(&'cmd mut Command);
+
+ impl Drop for ResetStderr<'_> {
+ fn drop(&mut self) {
+ // Reset stderr to default to release pipe_writer so that print thread will
+ // not block forever.
+ self.0.stderr(Stdio::inherit());
+ }
+ }
+
+ println!("running: {:?}", cmd);
+
+ let cmd = ResetStderr(cmd);
+
+ match cmd.0.stderr(pipe_writer).spawn() {
+ Ok(child) => Ok(child),
+ Err(ref e) if e.kind() == io::ErrorKind::NotFound => {
+ let extra = if cfg!(windows) {
+ " (see https://github.com/rust-lang/cc-rs#compile-time-requirements \
+ for help)"
+ } else {
+ ""
+ };
+ Err(Error::new(
+ ErrorKind::ToolNotFound,
+ format!("Failed to find tool. Is `{}` installed?{}", program, extra),
+ ))
+ }
+ Err(e) => Err(Error::new(
+ ErrorKind::ToolExecError,
+ format!(
+ "Command {:?} with args {:?} failed to start: {:?}",
+ cmd.0, program, e
+ ),
+ )),
+ }
+}
+
+fn fail(s: &str) -> ! {
+ eprintln!("\n\nerror occurred: {}\n\n", s);
+ std::process::exit(1);
+}
+
+fn command_add_output_file(
+ cmd: &mut Command,
+ dst: &Path,
+ cuda: bool,
+ msvc: bool,
+ clang: bool,
+ gnu: bool,
+ is_asm: bool,
+ is_arm: bool,
+) {
+ if msvc && !clang && !gnu && !cuda && !(is_asm && is_arm) {
+ let mut s = OsString::from("-Fo");
+ s.push(&dst);
+ cmd.arg(s);
+ } else {
+ cmd.arg("-o").arg(&dst);
+ }
+}
+
+// Use by default minimum available API level
+// See note about naming here
+// https://android.googlesource.com/platform/ndk/+/refs/heads/ndk-release-r21/docs/BuildSystemMaintainers.md#Clang
+static NEW_STANDALONE_ANDROID_COMPILERS: [&str; 4] = [
+ "aarch64-linux-android21-clang",
+ "armv7a-linux-androideabi16-clang",
+ "i686-linux-android16-clang",
+ "x86_64-linux-android21-clang",
+];
+
+// New "standalone" C/C++ cross-compiler executables from recent Android NDK
+// are just shell scripts that call main clang binary (from Android NDK) with
+// proper `--target` argument.
+//
+// For example, armv7a-linux-androideabi16-clang passes
+// `--target=armv7a-linux-androideabi16` to clang.
+// So to construct proper command line check if
+// `--target` argument would be passed or not to clang
+fn android_clang_compiler_uses_target_arg_internally(clang_path: &Path) -> bool {
+ if let Some(filename) = clang_path.file_name() {
+ if let Some(filename_str) = filename.to_str() {
+ if let Some(idx) = filename_str.rfind("-") {
+ return filename_str.split_at(idx).0.contains("android");
+ }
+ }
+ }
+ false
+}
+
+#[test]
+fn test_android_clang_compiler_uses_target_arg_internally() {
+ for version in 16..21 {
+ assert!(android_clang_compiler_uses_target_arg_internally(
+ &PathBuf::from(format!("armv7a-linux-androideabi{}-clang", version))
+ ));
+ assert!(android_clang_compiler_uses_target_arg_internally(
+ &PathBuf::from(format!("armv7a-linux-androideabi{}-clang++", version))
+ ));
+ }
+ assert!(!android_clang_compiler_uses_target_arg_internally(
+ &PathBuf::from("clang-i686-linux-android")
+ ));
+ assert!(!android_clang_compiler_uses_target_arg_internally(
+ &PathBuf::from("clang")
+ ));
+ assert!(!android_clang_compiler_uses_target_arg_internally(
+ &PathBuf::from("clang++")
+ ));
+}
+
+fn autodetect_android_compiler(target: &str, host: &str, gnu: &str, clang: &str) -> String {
+ let new_clang_key = match target {
+ "aarch64-linux-android" => Some("aarch64"),
+ "armv7-linux-androideabi" => Some("armv7a"),
+ "i686-linux-android" => Some("i686"),
+ "x86_64-linux-android" => Some("x86_64"),
+ _ => None,
+ };
+
+ let new_clang = new_clang_key
+ .map(|key| {
+ NEW_STANDALONE_ANDROID_COMPILERS
+ .iter()
+ .find(|x| x.starts_with(key))
+ })
+ .unwrap_or(None);
+
+ if let Some(new_clang) = new_clang {
+ if Command::new(new_clang).output().is_ok() {
+ return (*new_clang).into();
+ }
+ }
+
+ let target = target
+ .replace("armv7neon", "arm")
+ .replace("armv7", "arm")
+ .replace("thumbv7neon", "arm")
+ .replace("thumbv7", "arm");
+ let gnu_compiler = format!("{}-{}", target, gnu);
+ let clang_compiler = format!("{}-{}", target, clang);
+
+ // On Windows, the Android clang compiler is provided as a `.cmd` file instead
+ // of a `.exe` file. `std::process::Command` won't run `.cmd` files unless the
+ // `.cmd` is explicitly appended to the command name, so we do that here.
+ let clang_compiler_cmd = format!("{}-{}.cmd", target, clang);
+
+ // Check if gnu compiler is present
+ // if not, use clang
+ if Command::new(&gnu_compiler).output().is_ok() {
+ gnu_compiler
+ } else if host.contains("windows") && Command::new(&clang_compiler_cmd).output().is_ok() {
+ clang_compiler_cmd
+ } else {
+ clang_compiler
+ }
+}
+
+// Rust and clang/cc don't agree on how to name the target.
+fn map_darwin_target_from_rust_to_compiler_architecture(target: &str) -> Option<&'static str> {
+ if target.contains("x86_64h") {
+ Some("x86_64h")
+ } else if target.contains("x86_64") {
+ Some("x86_64")
+ } else if target.contains("arm64e") {
+ Some("arm64e")
+ } else if target.contains("aarch64") {
+ Some("arm64")
+ } else if target.contains("i686") {
+ Some("i386")
+ } else if target.contains("powerpc") {
+ Some("ppc")
+ } else if target.contains("powerpc64") {
+ Some("ppc64")
+ } else {
+ None
+ }
+}
+
+fn which(tool: &Path, path_entries: Option<OsString>) -> Option<PathBuf> {
+ fn check_exe(exe: &mut PathBuf) -> bool {
+ let exe_ext = std::env::consts::EXE_EXTENSION;
+ exe.exists() || (!exe_ext.is_empty() && exe.set_extension(exe_ext) && exe.exists())
+ }
+
+ // If |tool| is not just one "word," assume it's an actual path...
+ if tool.components().count() > 1 {
+ let mut exe = PathBuf::from(tool);
+ return if check_exe(&mut exe) { Some(exe) } else { None };
+ }
+
+ // Loop through PATH entries searching for the |tool|.
+ let path_entries = path_entries.or(env::var_os("PATH"))?;
+ env::split_paths(&path_entries).find_map(|path_entry| {
+ let mut exe = path_entry.join(tool);
+ return if check_exe(&mut exe) { Some(exe) } else { None };
+ })
+}
+
+// search for |prog| on 'programs' path in '|cc| -print-search-dirs' output
+fn search_programs(cc: &mut Command, prog: &str) -> Option<PathBuf> {
+ let search_dirs = run_output(cc.arg("-print-search-dirs"), "cc").ok()?;
+ // clang driver appears to be forcing UTF-8 output even on Windows,
+ // hence from_utf8 is assumed to be usable in all cases.
+ let search_dirs = std::str::from_utf8(&search_dirs).ok()?;
+ for dirs in search_dirs.split(|c| c == '\r' || c == '\n') {
+ if let Some(path) = dirs.strip_prefix("programs: =") {
+ return which(Path::new(prog), Some(OsString::from(path)));
+ }
+ }
+ None
+}
+
+#[derive(Clone, Copy, PartialEq)]
+enum AsmFileExt {
+ /// `.asm` files. On MSVC targets, we assume these should be passed to MASM
+ /// (`ml{,64}.exe`).
+ DotAsm,
+ /// `.s` or `.S` files, which do not have the special handling on MSVC targets.
+ DotS,
+}
+
+impl AsmFileExt {
+ fn from_path(file: &Path) -> Option<Self> {
+ if let Some(ext) = file.extension() {
+ if let Some(ext) = ext.to_str() {
+ let ext = ext.to_lowercase();
+ match &*ext {
+ "asm" => return Some(AsmFileExt::DotAsm),
+ "s" => return Some(AsmFileExt::DotS),
+ _ => return None,
+ }
+ }
+ }
+ None
+ }
+}
+
+struct PrintThread {
+ handle: Option<JoinHandle<()>>,
+ pipe_writer: Option<File>,
+}
+
+impl PrintThread {
+ fn new() -> Result<Self, Error> {
+ let (pipe_reader, pipe_writer) = os_pipe::pipe()?;
+
+ // Capture the standard error coming from compilation, and write it out
+ // with cargo:warning= prefixes. Note that this is a bit wonky to avoid
+ // requiring the output to be UTF-8, we instead just ship bytes from one
+ // location to another.
+ let print = thread::spawn(move || {
+ let mut stderr = BufReader::with_capacity(4096, pipe_reader);
+ let mut line = Vec::with_capacity(20);
+ let stdout = io::stdout();
+
+ // read_until returns 0 on Eof
+ while stderr.read_until(b'\n', &mut line).unwrap() != 0 {
+ {
+ let mut stdout = stdout.lock();
+
+ stdout.write_all(b"cargo:warning=").unwrap();
+ stdout.write_all(&line).unwrap();
+ stdout.write_all(b"\n").unwrap();
+ }
+
+ // read_until does not clear the buffer
+ line.clear();
+ }
+ });
+
+ Ok(Self {
+ handle: Some(print),
+ pipe_writer: Some(pipe_writer),
+ })
+ }
+
+ fn pipe_writer(&mut self) -> &mut Option<File> {
+ &mut self.pipe_writer
+ }
+
+ fn pipe_writer_cloned(&self) -> Result<Option<File>, Error> {
+ self.pipe_writer
+ .as_ref()
+ .map(File::try_clone)
+ .transpose()
+ .map_err(From::from)
+ }
+}
+
+impl Drop for PrintThread {
+ fn drop(&mut self) {
+ // Drop pipe_writer first to avoid deadlock
+ self.pipe_writer.take();
+
+ self.handle.take().unwrap().join().unwrap();
+ }
+}
diff --git a/vendor/cc/src/os_pipe.rs b/vendor/cc/src/os_pipe.rs
new file mode 100644
index 0000000..218c9bc
--- /dev/null
+++ b/vendor/cc/src/os_pipe.rs
@@ -0,0 +1,28 @@
+//! Adapted from:
+//! - https://doc.rust-lang.org/src/std/sys/unix/pipe.rs.html
+//! - https://doc.rust-lang.org/src/std/sys/unix/fd.rs.html#385
+//! - https://github.com/rust-lang/rust/blob/master/library/std/src/sys/mod.rs#L57
+//! - https://github.com/oconnor663/os_pipe.rs
+use std::fs::File;
+
+/// Open a new pipe and return a pair of [`File`] objects for the reader and writer.
+///
+/// This corresponds to the `pipe2` library call on Posix and the
+/// `CreatePipe` library call on Windows (though these implementation
+/// details might change). These pipes are non-inheritable, so new child
+/// processes won't receive a copy of them unless they're explicitly
+/// passed as stdin/stdout/stderr.
+pub fn pipe() -> std::io::Result<(File, File)> {
+ sys::pipe()
+}
+
+#[cfg(unix)]
+#[path = "os_pipe/unix.rs"]
+mod sys;
+
+#[cfg(windows)]
+#[path = "os_pipe/windows.rs"]
+mod sys;
+
+#[cfg(all(not(unix), not(windows)))]
+compile_error!("Only unix and windows support os_pipe!");
diff --git a/vendor/cc/src/os_pipe/unix.rs b/vendor/cc/src/os_pipe/unix.rs
new file mode 100644
index 0000000..ec4e547
--- /dev/null
+++ b/vendor/cc/src/os_pipe/unix.rs
@@ -0,0 +1,121 @@
+use std::{
+ fs::File,
+ io,
+ os::{raw::c_int, unix::io::FromRawFd},
+};
+
+pub(super) fn pipe() -> io::Result<(File, File)> {
+ let mut fds = [0; 2];
+
+ // The only known way right now to create atomically set the CLOEXEC flag is
+ // to use the `pipe2` syscall. This was added to Linux in 2.6.27, glibc 2.9
+ // and musl 0.9.3, and some other targets also have it.
+ #[cfg(any(
+ target_os = "dragonfly",
+ target_os = "freebsd",
+ target_os = "linux",
+ target_os = "netbsd",
+ target_os = "openbsd",
+ target_os = "redox"
+ ))]
+ {
+ unsafe {
+ cvt(libc::pipe2(fds.as_mut_ptr(), libc::O_CLOEXEC))?;
+ }
+ }
+
+ #[cfg(not(any(
+ target_os = "dragonfly",
+ target_os = "freebsd",
+ target_os = "linux",
+ target_os = "netbsd",
+ target_os = "openbsd",
+ target_os = "redox"
+ )))]
+ {
+ unsafe {
+ cvt(libc::pipe(fds.as_mut_ptr()))?;
+ }
+
+ cloexec::set_cloexec(fds[0])?;
+ cloexec::set_cloexec(fds[1])?;
+ }
+
+ unsafe { Ok((File::from_raw_fd(fds[0]), File::from_raw_fd(fds[1]))) }
+}
+
+fn cvt(t: c_int) -> io::Result<c_int> {
+ if t == -1 {
+ Err(io::Error::last_os_error())
+ } else {
+ Ok(t)
+ }
+}
+
+#[cfg(not(any(
+ target_os = "dragonfly",
+ target_os = "freebsd",
+ target_os = "linux",
+ target_os = "netbsd",
+ target_os = "openbsd",
+ target_os = "redox"
+)))]
+mod cloexec {
+ use super::{c_int, cvt, io};
+
+ #[cfg(not(any(
+ target_env = "newlib",
+ target_os = "solaris",
+ target_os = "illumos",
+ target_os = "emscripten",
+ target_os = "fuchsia",
+ target_os = "l4re",
+ target_os = "linux",
+ target_os = "haiku",
+ target_os = "redox",
+ target_os = "vxworks",
+ target_os = "nto",
+ )))]
+ pub(super) fn set_cloexec(fd: c_int) -> io::Result<()> {
+ unsafe {
+ cvt(libc::ioctl(fd, libc::FIOCLEX))?;
+ }
+
+ Ok(())
+ }
+
+ #[cfg(any(
+ all(
+ target_env = "newlib",
+ not(any(target_os = "espidf", target_os = "horizon"))
+ ),
+ target_os = "solaris",
+ target_os = "illumos",
+ target_os = "emscripten",
+ target_os = "fuchsia",
+ target_os = "l4re",
+ target_os = "linux",
+ target_os = "haiku",
+ target_os = "redox",
+ target_os = "vxworks",
+ target_os = "nto",
+ ))]
+ pub(super) fn set_cloexec(fd: c_int) -> io::Result<()> {
+ unsafe {
+ let previous = cvt(libc::fcntl(fd, libc::F_GETFD))?;
+ let new = previous | libc::FD_CLOEXEC;
+ if new != previous {
+ cvt(libc::fcntl(fd, libc::F_SETFD, new))?;
+ }
+ }
+
+ Ok(())
+ }
+
+ // FD_CLOEXEC is not supported in ESP-IDF and Horizon OS but there's no need to,
+ // because neither supports spawning processes.
+ #[cfg(any(target_os = "espidf", target_os = "horizon"))]
+ pub(super) fn set_cloexec(_fd: c_int) -> io::Result<()> {
+ Ok(())
+ }
+}
diff --git a/vendor/cc/src/os_pipe/windows.rs b/vendor/cc/src/os_pipe/windows.rs
new file mode 100644
index 0000000..212632e
--- /dev/null
+++ b/vendor/cc/src/os_pipe/windows.rs
@@ -0,0 +1,24 @@
+use crate::windows_sys::{CreatePipe, INVALID_HANDLE_VALUE};
+use std::{fs::File, io, os::windows::prelude::*, ptr};
+
+/// NOTE: These pipes do not support IOCP.
+///
+/// If IOCP is needed, then you might want to emulate
+/// anonymous pipes with CreateNamedPipe, as Rust's stdlib does.
+pub(super) fn pipe() -> io::Result<(File, File)> {
+ let mut read_pipe = INVALID_HANDLE_VALUE;
+ let mut write_pipe = INVALID_HANDLE_VALUE;
+
+ let ret = unsafe { CreatePipe(&mut read_pipe, &mut write_pipe, ptr::null_mut(), 0) };
+
+ if ret == 0 {
+ Err(io::Error::last_os_error())
+ } else {
+ unsafe {
+ Ok((
+ File::from_raw_handle(read_pipe as RawHandle),
+ File::from_raw_handle(write_pipe as RawHandle),
+ ))
+ }
+ }
+}
diff --git a/vendor/cc/src/registry.rs b/vendor/cc/src/registry.rs
new file mode 100644
index 0000000..7c1c2dd
--- /dev/null
+++ b/vendor/cc/src/registry.rs
@@ -0,0 +1,190 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use crate::windows_sys::{
+ RegCloseKey, RegEnumKeyExW, RegOpenKeyExW, RegQueryValueExW, ERROR_NO_MORE_ITEMS,
+ ERROR_SUCCESS, HKEY, HKEY_LOCAL_MACHINE, KEY_READ, KEY_WOW64_32KEY, REG_SZ,
+};
+use std::{
+ ffi::{OsStr, OsString},
+ io,
+ ops::RangeFrom,
+ os::windows::prelude::*,
+ ptr::null_mut,
+};
+
+/// Must never be `HKEY_PERFORMANCE_DATA`.
+pub(crate) struct RegistryKey(Repr);
+
+type DWORD = u32;
+
+struct OwnedKey(HKEY);
+
+/// Note: must not encode `HKEY_PERFORMANCE_DATA` or one of its subkeys.
+enum Repr {
+ /// `HKEY_LOCAL_MACHINE`.
+ LocalMachine,
+ /// A subkey of `HKEY_LOCAL_MACHINE`.
+ Owned(OwnedKey),
+}
+
+pub struct Iter<'a> {
+ idx: RangeFrom<DWORD>,
+ key: &'a RegistryKey,
+}
+
+unsafe impl Sync for Repr {}
+unsafe impl Send for Repr {}
+
+pub(crate) const LOCAL_MACHINE: RegistryKey = RegistryKey(Repr::LocalMachine);
+
+impl RegistryKey {
+ fn raw(&self) -> HKEY {
+ match self.0 {
+ Repr::LocalMachine => HKEY_LOCAL_MACHINE,
+ Repr::Owned(ref val) => val.0,
+ }
+ }
+
+ /// Open a sub-key of `self`.
+ pub fn open(&self, key: &OsStr) -> io::Result<RegistryKey> {
+ let key = key.encode_wide().chain(Some(0)).collect::<Vec<_>>();
+ let mut ret = null_mut();
+ let err = unsafe {
+ RegOpenKeyExW(
+ self.raw(),
+ key.as_ptr(),
+ 0,
+ KEY_READ | KEY_WOW64_32KEY,
+ &mut ret,
+ )
+ };
+ if err == ERROR_SUCCESS {
+ Ok(RegistryKey(Repr::Owned(OwnedKey(ret))))
+ } else {
+ Err(io::Error::from_raw_os_error(err as i32))
+ }
+ }
+
+ pub fn iter(&self) -> Iter {
+ Iter {
+ idx: 0..,
+ key: self,
+ }
+ }
+
+ pub fn query_str(&self, name: &str) -> io::Result<OsString> {
+ let name: &OsStr = name.as_ref();
+ let name = name.encode_wide().chain(Some(0)).collect::<Vec<_>>();
+ let mut len = 0;
+ let mut kind = 0;
+ unsafe {
+ let err = RegQueryValueExW(
+ self.raw(),
+ name.as_ptr(),
+ null_mut(),
+ &mut kind,
+ null_mut(),
+ &mut len,
+ );
+ if err != ERROR_SUCCESS {
+ return Err(io::Error::from_raw_os_error(err as i32));
+ }
+ if kind != REG_SZ {
+ return Err(io::Error::new(
+ io::ErrorKind::Other,
+ "registry key wasn't a string",
+ ));
+ }
+
+ // The length here is the length in bytes, but we're using wide
+ // characters so we need to be sure to halve it for the length
+ // passed in.
+ assert!(len % 2 == 0, "impossible wide string size: {} bytes", len);
+ let vlen = len as usize / 2;
+ // Defensively initialized, see comment about
+ // `HKEY_PERFORMANCE_DATA` below.
+ let mut v = vec![0u16; vlen];
+ let err = RegQueryValueExW(
+ self.raw(),
+ name.as_ptr(),
+ null_mut(),
+ null_mut(),
+ v.as_mut_ptr() as *mut _,
+ &mut len,
+ );
+ // We don't check for `ERROR_MORE_DATA` (which would if the value
+ // grew between the first and second call to `RegQueryValueExW`),
+ // both because it's extremely unlikely, and this is a bit more
+ // defensive more defensive against weird types of registry keys.
+ if err != ERROR_SUCCESS {
+ return Err(io::Error::from_raw_os_error(err as i32));
+ }
+ // The length is allowed to change, but should still be even, as
+ // well as smaller.
+ assert!(len % 2 == 0, "impossible wide string size: {} bytes", len);
+ // If the length grew but returned a success code, it *probably*
+ // indicates we're `HKEY_PERFORMANCE_DATA` or a subkey(?). We
+ // consider this UB, since those keys write "undefined" or
+ // "unpredictable" values to len, and need to use a completely
+ // different loop structure. This should be impossible (and enforce
+ // it in the API to the best of our ability), but to mitigate the
+ // damage we do some smoke-checks on the len, and ensure `v` has
+ // been fully initialized (rather than trusting the result of
+ // `RegQueryValueExW`).
+ let actual_len = len as usize / 2;
+ assert!(actual_len <= v.len());
+ v.truncate(actual_len);
+ // Some registry keys may have a terminating nul character, but
+ // we're not interested in that, so chop it off if it's there.
+ if !v.is_empty() && v[v.len() - 1] == 0 {
+ v.pop();
+ }
+ return Ok(OsString::from_wide(&v));
+ }
+ }
+}
+
+impl Drop for OwnedKey {
+ fn drop(&mut self) {
+ unsafe {
+ RegCloseKey(self.0);
+ }
+ }
+}
+
+impl<'a> Iterator for Iter<'a> {
+ type Item = io::Result<OsString>;
+
+ fn next(&mut self) -> Option<io::Result<OsString>> {
+ self.idx.next().and_then(|i| unsafe {
+ let mut v = Vec::with_capacity(256);
+ let mut len = v.capacity() as DWORD;
+ let ret = RegEnumKeyExW(
+ self.key.raw(),
+ i,
+ v.as_mut_ptr(),
+ &mut len,
+ null_mut(),
+ null_mut(),
+ null_mut(),
+ null_mut(),
+ );
+ if ret == ERROR_NO_MORE_ITEMS {
+ None
+ } else if ret != ERROR_SUCCESS {
+ Some(Err(io::Error::from_raw_os_error(ret as i32)))
+ } else {
+ v.set_len(len as usize);
+ Some(Ok(OsString::from_wide(&v)))
+ }
+ })
+ }
+}
diff --git a/vendor/cc/src/setup_config.rs b/vendor/cc/src/setup_config.rs
new file mode 100644
index 0000000..fe2c030
--- /dev/null
+++ b/vendor/cc/src/setup_config.rs
@@ -0,0 +1,283 @@
+// Copyright © 2017 winapi-rs developers
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
+// All files in the project carrying such notice may not be copied, modified, or distributed
+// except according to those terms.
+
+#![allow(bad_style)]
+#![allow(unused)]
+
+use crate::{
+ com::{BStr, ComPtr},
+ winapi::{
+ IUnknown, IUnknownVtbl, Interface, LCID, LPCOLESTR, LPCWSTR, LPFILETIME, LPSAFEARRAY,
+ PULONGLONG, ULONG,
+ },
+ windows_sys::{CoCreateInstance, BSTR, CLSCTX_ALL, HRESULT, S_FALSE},
+};
+
+use std::{
+ ffi::OsString,
+ ptr::{null, null_mut},
+};
+
+// Bindings to the Setup.Configuration stuff
+pub type InstanceState = u32;
+
+pub const eNone: InstanceState = 0;
+pub const eLocal: InstanceState = 1;
+pub const eRegistered: InstanceState = 2;
+pub const eNoRebootRequired: InstanceState = 4;
+pub const eComplete: InstanceState = -1i32 as u32;
+
+RIDL! {#[uuid(0xb41463c3, 0x8866, 0x43b5, 0xbc, 0x33, 0x2b, 0x06, 0x76, 0xf7, 0xf4, 0x2e)]
+interface ISetupInstance(ISetupInstanceVtbl): IUnknown(IUnknownVtbl) {
+ fn GetInstanceId(
+ pbstrInstanceId: *mut BSTR,
+ ) -> HRESULT,
+ fn GetInstallDate(
+ pInstallDate: LPFILETIME,
+ ) -> HRESULT,
+ fn GetInstallationName(
+ pbstrInstallationName: *mut BSTR,
+ ) -> HRESULT,
+ fn GetInstallationPath(
+ pbstrInstallationPath: *mut BSTR,
+ ) -> HRESULT,
+ fn GetInstallationVersion(
+ pbstrInstallationVersion: *mut BSTR,
+ ) -> HRESULT,
+ fn GetDisplayName(
+ lcid: LCID,
+ pbstrDisplayName: *mut BSTR,
+ ) -> HRESULT,
+ fn GetDescription(
+ lcid: LCID,
+ pbstrDescription: *mut BSTR,
+ ) -> HRESULT,
+ fn ResolvePath(
+ pwszRelativePath: LPCOLESTR,
+ pbstrAbsolutePath: *mut BSTR,
+ ) -> HRESULT,
+}}
+
+RIDL! {#[uuid(0x89143c9a, 0x05af, 0x49b0, 0xb7, 0x17, 0x72, 0xe2, 0x18, 0xa2, 0x18, 0x5c)]
+interface ISetupInstance2(ISetupInstance2Vtbl): ISetupInstance(ISetupInstanceVtbl) {
+ fn GetState(
+ pState: *mut InstanceState,
+ ) -> HRESULT,
+ fn GetPackages(
+ ppsaPackages: *mut LPSAFEARRAY,
+ ) -> HRESULT,
+ fn GetProduct(
+ ppPackage: *mut *mut ISetupPackageReference,
+ ) -> HRESULT,
+ fn GetProductPath(
+ pbstrProductPath: *mut BSTR,
+ ) -> HRESULT,
+}}
+
+RIDL! {#[uuid(0x6380bcff, 0x41d3, 0x4b2e, 0x8b, 0x2e, 0xbf, 0x8a, 0x68, 0x10, 0xc8, 0x48)]
+interface IEnumSetupInstances(IEnumSetupInstancesVtbl): IUnknown(IUnknownVtbl) {
+ fn Next(
+ celt: ULONG,
+ rgelt: *mut *mut ISetupInstance,
+ pceltFetched: *mut ULONG,
+ ) -> HRESULT,
+ fn Skip(
+ celt: ULONG,
+ ) -> HRESULT,
+ fn Reset() -> HRESULT,
+ fn Clone(
+ ppenum: *mut *mut IEnumSetupInstances,
+ ) -> HRESULT,
+}}
+
+RIDL! {#[uuid(0x42843719, 0xdb4c, 0x46c2, 0x8e, 0x7c, 0x64, 0xf1, 0x81, 0x6e, 0xfd, 0x5b)]
+interface ISetupConfiguration(ISetupConfigurationVtbl): IUnknown(IUnknownVtbl) {
+ fn EnumInstances(
+ ppEnumInstances: *mut *mut IEnumSetupInstances,
+ ) -> HRESULT,
+ fn GetInstanceForCurrentProcess(
+ ppInstance: *mut *mut ISetupInstance,
+ ) -> HRESULT,
+ fn GetInstanceForPath(
+ wzPath: LPCWSTR,
+ ppInstance: *mut *mut ISetupInstance,
+ ) -> HRESULT,
+}}
+
+RIDL! {#[uuid(0x26aab78c, 0x4a60, 0x49d6, 0xaf, 0x3b, 0x3c, 0x35, 0xbc, 0x93, 0x36, 0x5d)]
+interface ISetupConfiguration2(ISetupConfiguration2Vtbl):
+ ISetupConfiguration(ISetupConfigurationVtbl) {
+ fn EnumAllInstances(
+ ppEnumInstances: *mut *mut IEnumSetupInstances,
+ ) -> HRESULT,
+}}
+
+RIDL! {#[uuid(0xda8d8a16, 0xb2b6, 0x4487, 0xa2, 0xf1, 0x59, 0x4c, 0xcc, 0xcd, 0x6b, 0xf5)]
+interface ISetupPackageReference(ISetupPackageReferenceVtbl): IUnknown(IUnknownVtbl) {
+ fn GetId(
+ pbstrId: *mut BSTR,
+ ) -> HRESULT,
+ fn GetVersion(
+ pbstrVersion: *mut BSTR,
+ ) -> HRESULT,
+ fn GetChip(
+ pbstrChip: *mut BSTR,
+ ) -> HRESULT,
+ fn GetLanguage(
+ pbstrLanguage: *mut BSTR,
+ ) -> HRESULT,
+ fn GetBranch(
+ pbstrBranch: *mut BSTR,
+ ) -> HRESULT,
+ fn GetType(
+ pbstrType: *mut BSTR,
+ ) -> HRESULT,
+ fn GetUniqueId(
+ pbstrUniqueId: *mut BSTR,
+ ) -> HRESULT,
+}}
+
+RIDL! {#[uuid(0x42b21b78, 0x6192, 0x463e, 0x87, 0xbf, 0xd5, 0x77, 0x83, 0x8f, 0x1d, 0x5c)]
+interface ISetupHelper(ISetupHelperVtbl): IUnknown(IUnknownVtbl) {
+ fn ParseVersion(
+ pwszVersion: LPCOLESTR,
+ pullVersion: PULONGLONG,
+ ) -> HRESULT,
+ fn ParseVersionRange(
+ pwszVersionRange: LPCOLESTR,
+ pullMinVersion: PULONGLONG,
+ pullMaxVersion: PULONGLONG,
+ ) -> HRESULT,
+}}
+
+DEFINE_GUID! {CLSID_SetupConfiguration,
+0x177f0c4a, 0x1cd3, 0x4de7, 0xa3, 0x2c, 0x71, 0xdb, 0xbb, 0x9f, 0xa3, 0x6d}
+
+// Safe wrapper around the COM interfaces
+pub struct SetupConfiguration(ComPtr<ISetupConfiguration>);
+
+impl SetupConfiguration {
+ pub fn new() -> Result<SetupConfiguration, i32> {
+ let mut obj = null_mut();
+ let err = unsafe {
+ CoCreateInstance(
+ &CLSID_SetupConfiguration,
+ null_mut(),
+ CLSCTX_ALL,
+ &ISetupConfiguration::uuidof(),
+ &mut obj,
+ )
+ };
+ if err < 0 {
+ return Err(err);
+ }
+ let obj = unsafe { ComPtr::from_raw(obj as *mut ISetupConfiguration) };
+ Ok(SetupConfiguration(obj))
+ }
+ pub fn get_instance_for_current_process(&self) -> Result<SetupInstance, i32> {
+ let mut obj = null_mut();
+ let err = unsafe { self.0.GetInstanceForCurrentProcess(&mut obj) };
+ if err < 0 {
+ return Err(err);
+ }
+ Ok(unsafe { SetupInstance::from_raw(obj) })
+ }
+ pub fn enum_instances(&self) -> Result<EnumSetupInstances, i32> {
+ let mut obj = null_mut();
+ let err = unsafe { self.0.EnumInstances(&mut obj) };
+ if err < 0 {
+ return Err(err);
+ }
+ Ok(unsafe { EnumSetupInstances::from_raw(obj) })
+ }
+ pub fn enum_all_instances(&self) -> Result<EnumSetupInstances, i32> {
+ let mut obj = null_mut();
+ let this = self.0.cast::<ISetupConfiguration2>()?;
+ let err = unsafe { this.EnumAllInstances(&mut obj) };
+ if err < 0 {
+ return Err(err);
+ }
+ Ok(unsafe { EnumSetupInstances::from_raw(obj) })
+ }
+}
+
+pub struct SetupInstance(ComPtr<ISetupInstance>);
+
+impl SetupInstance {
+ pub unsafe fn from_raw(obj: *mut ISetupInstance) -> SetupInstance {
+ SetupInstance(ComPtr::from_raw(obj))
+ }
+ pub fn instance_id(&self) -> Result<OsString, i32> {
+ let mut s = null();
+ let err = unsafe { self.0.GetInstanceId(&mut s) };
+ let bstr = unsafe { BStr::from_raw(s) };
+ if err < 0 {
+ return Err(err);
+ }
+ Ok(bstr.to_osstring())
+ }
+ pub fn installation_name(&self) -> Result<OsString, i32> {
+ let mut s = null();
+ let err = unsafe { self.0.GetInstallationName(&mut s) };
+ let bstr = unsafe { BStr::from_raw(s) };
+ if err < 0 {
+ return Err(err);
+ }
+ Ok(bstr.to_osstring())
+ }
+ pub fn installation_path(&self) -> Result<OsString, i32> {
+ let mut s = null();
+ let err = unsafe { self.0.GetInstallationPath(&mut s) };
+ let bstr = unsafe { BStr::from_raw(s) };
+ if err < 0 {
+ return Err(err);
+ }
+ Ok(bstr.to_osstring())
+ }
+ pub fn installation_version(&self) -> Result<OsString, i32> {
+ let mut s = null();
+ let err = unsafe { self.0.GetInstallationVersion(&mut s) };
+ let bstr = unsafe { BStr::from_raw(s) };
+ if err < 0 {
+ return Err(err);
+ }
+ Ok(bstr.to_osstring())
+ }
+ pub fn product_path(&self) -> Result<OsString, i32> {
+ let mut s = null();
+ let this = self.0.cast::<ISetupInstance2>()?;
+ let err = unsafe { this.GetProductPath(&mut s) };
+ let bstr = unsafe { BStr::from_raw(s) };
+ if err < 0 {
+ return Err(err);
+ }
+ Ok(bstr.to_osstring())
+ }
+}
+
+pub struct EnumSetupInstances(ComPtr<IEnumSetupInstances>);
+
+impl EnumSetupInstances {
+ pub unsafe fn from_raw(obj: *mut IEnumSetupInstances) -> EnumSetupInstances {
+ EnumSetupInstances(ComPtr::from_raw(obj))
+ }
+}
+
+impl Iterator for EnumSetupInstances {
+ type Item = Result<SetupInstance, i32>;
+ fn next(&mut self) -> Option<Result<SetupInstance, i32>> {
+ let mut obj = null_mut();
+ let err = unsafe { self.0.Next(1, &mut obj, null_mut()) };
+ if err < 0 {
+ return Some(Err(err));
+ }
+ if err == S_FALSE {
+ return None;
+ }
+ Some(Ok(unsafe { SetupInstance::from_raw(obj) }))
+ }
+}
diff --git a/vendor/cc/src/vs_instances.rs b/vendor/cc/src/vs_instances.rs
new file mode 100644
index 0000000..31d3dd1
--- /dev/null
+++ b/vendor/cc/src/vs_instances.rs
@@ -0,0 +1,199 @@
+use std::borrow::Cow;
+use std::collections::HashMap;
+use std::convert::TryFrom;
+use std::io::BufRead;
+use std::path::PathBuf;
+
+use crate::setup_config::{EnumSetupInstances, SetupInstance};
+
+pub enum VsInstance {
+ Com(SetupInstance),
+ Vswhere(VswhereInstance),
+}
+
+impl VsInstance {
+ pub fn installation_name(&self) -> Option<Cow<str>> {
+ match self {
+ VsInstance::Com(s) => s
+ .installation_name()
+ .ok()
+ .and_then(|s| s.into_string().ok())
+ .map(Cow::from),
+ VsInstance::Vswhere(v) => v.map.get("installationName").map(Cow::from),
+ }
+ }
+
+ pub fn installation_path(&self) -> Option<PathBuf> {
+ match self {
+ VsInstance::Com(s) => s.installation_path().ok().map(PathBuf::from),
+ VsInstance::Vswhere(v) => v.map.get("installationPath").map(PathBuf::from),
+ }
+ }
+
+ pub fn installation_version(&self) -> Option<Cow<str>> {
+ match self {
+ VsInstance::Com(s) => s
+ .installation_version()
+ .ok()
+ .and_then(|s| s.into_string().ok())
+ .map(Cow::from),
+ VsInstance::Vswhere(v) => v.map.get("installationVersion").map(Cow::from),
+ }
+ }
+}
+
+pub enum VsInstances {
+ ComBased(EnumSetupInstances),
+ VswhereBased(VswhereInstance),
+}
+
+impl IntoIterator for VsInstances {
+ type Item = VsInstance;
+ #[allow(bare_trait_objects)]
+ type IntoIter = Box<Iterator<Item = Self::Item>>;
+
+ fn into_iter(self) -> Self::IntoIter {
+ match self {
+ VsInstances::ComBased(e) => {
+ Box::new(e.into_iter().filter_map(Result::ok).map(VsInstance::Com))
+ }
+ VsInstances::VswhereBased(v) => Box::new(std::iter::once(VsInstance::Vswhere(v))),
+ }
+ }
+}
+
+#[derive(Debug)]
+pub struct VswhereInstance {
+ map: HashMap<String, String>,
+}
+
+impl TryFrom<&Vec<u8>> for VswhereInstance {
+ type Error = &'static str;
+
+ fn try_from(output: &Vec<u8>) -> Result<Self, Self::Error> {
+ let map: HashMap<_, _> = output
+ .lines()
+ .filter_map(Result::ok)
+ .filter_map(|s| {
+ let mut splitn = s.splitn(2, ": ");
+ Some((splitn.next()?.to_owned(), splitn.next()?.to_owned()))
+ })
+ .collect();
+
+ if !map.contains_key("installationName")
+ || !map.contains_key("installationPath")
+ || !map.contains_key("installationVersion")
+ {
+ return Err("required properties not found");
+ }
+
+ Ok(Self { map })
+ }
+}
+
+#[cfg(test)]
+mod tests_ {
+ use std::borrow::Cow;
+ use std::convert::TryFrom;
+ use std::path::PathBuf;
+
+ #[test]
+ fn it_parses_vswhere_output_correctly() {
+ let output = br"instanceId: 58104422
+installDate: 21/02/2021 21:50:33
+installationName: VisualStudio/16.9.2+31112.23
+installationPath: C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools
+installationVersion: 16.9.31112.23
+productId: Microsoft.VisualStudio.Product.BuildTools
+productPath: C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\Common7\Tools\LaunchDevCmd.bat
+state: 4294967295
+isComplete: 1
+isLaunchable: 1
+isPrerelease: 0
+isRebootRequired: 0
+displayName: Visual Studio Build Tools 2019
+description: The Visual Studio Build Tools allows you to build native and managed MSBuild-based applications without requiring the Visual Studio IDE. There are options to install the Visual C++ compilers and libraries, MFC, ATL, and C++/CLI support.
+channelId: VisualStudio.16.Release
+channelUri: https://aka.ms/vs/16/release/channel
+enginePath: C:\Program Files (x86)\Microsoft Visual Studio\Installer\resources\app\ServiceHub\Services\Microsoft.VisualStudio.Setup.Service
+releaseNotes: https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.9#16.9.2
+thirdPartyNotices: https://go.microsoft.com/fwlink/?LinkId=660909
+updateDate: 2021-03-17T21:16:46.5963702Z
+catalog_buildBranch: d16.9
+catalog_buildVersion: 16.9.31112.23
+catalog_id: VisualStudio/16.9.2+31112.23
+catalog_localBuild: build-lab
+catalog_manifestName: VisualStudio
+catalog_manifestType: installer
+catalog_productDisplayVersion: 16.9.2
+catalog_productLine: Dev16
+catalog_productLineVersion: 2019
+catalog_productMilestone: RTW
+catalog_productMilestoneIsPreRelease: False
+catalog_productName: Visual Studio
+catalog_productPatchVersion: 2
+catalog_productPreReleaseMilestoneSuffix: 1.0
+catalog_productSemanticVersion: 16.9.2+31112.23
+catalog_requiredEngineVersion: 2.9.3365.38425
+properties_campaignId: 156063665.1613940062
+properties_channelManifestId: VisualStudio.16.Release/16.9.2+31112.23
+properties_nickname:
+properties_setupEngineFilePath: C:\Program Files (x86)\Microsoft Visual Studio\Installer\vs_installershell.exe
+"
+ .to_vec();
+
+ let vswhere_instance = super::VswhereInstance::try_from(&output);
+ assert!(vswhere_instance.is_ok());
+
+ let vs_instance = super::VsInstance::Vswhere(vswhere_instance.unwrap());
+ assert_eq!(
+ vs_instance.installation_name(),
+ Some(Cow::from("VisualStudio/16.9.2+31112.23"))
+ );
+ assert_eq!(
+ vs_instance.installation_path(),
+ Some(PathBuf::from(
+ r"C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools"
+ ))
+ );
+ assert_eq!(
+ vs_instance.installation_version(),
+ Some(Cow::from("16.9.31112.23"))
+ );
+ }
+
+ #[test]
+ fn it_returns_an_error_for_empty_output() {
+ let output = b"".to_vec();
+
+ let vswhere_instance = super::VswhereInstance::try_from(&output);
+
+ assert!(vswhere_instance.is_err());
+ }
+
+ #[test]
+ fn it_returns_an_error_for_output_consisting_of_empty_lines() {
+ let output = br"
+
+"
+ .to_vec();
+
+ let vswhere_instance = super::VswhereInstance::try_from(&output);
+
+ assert!(vswhere_instance.is_err());
+ }
+
+ #[test]
+ fn it_returns_an_error_for_output_without_required_properties() {
+ let output = br"instanceId: 58104422
+installDate: 21/02/2021 21:50:33
+productId: Microsoft.VisualStudio.Product.BuildTools
+productPath: C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\Common7\Tools\LaunchDevCmd.bat
+"
+ .to_vec();
+
+ let vswhere_instance = super::VswhereInstance::try_from(&output);
+
+ assert!(vswhere_instance.is_err());
+ }
+}
diff --git a/vendor/cc/src/winapi.rs b/vendor/cc/src/winapi.rs
new file mode 100644
index 0000000..223599f
--- /dev/null
+++ b/vendor/cc/src/winapi.rs
@@ -0,0 +1,146 @@
+// Copyright © 2015-2017 winapi-rs developers
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
+// All files in the project carrying such notice may not be copied, modified, or distributed
+// except according to those terms.
+
+#![allow(bad_style)]
+
+use std::os::raw;
+
+pub type wchar_t = u16;
+
+pub use crate::windows_sys::{FILETIME, GUID, HRESULT, SAFEARRAY, SAFEARRAYBOUND};
+
+pub type REFIID = *const IID;
+pub type IID = GUID;
+pub type ULONG = raw::c_ulong;
+pub type DWORD = u32;
+pub type LPFILETIME = *mut FILETIME;
+pub type OLECHAR = WCHAR;
+pub type WCHAR = wchar_t;
+pub type LPCOLESTR = *const OLECHAR;
+pub type LCID = DWORD;
+pub type LPCWSTR = *const WCHAR;
+pub type PULONGLONG = *mut ULONGLONG;
+pub type ULONGLONG = u64;
+
+pub trait Interface {
+ fn uuidof() -> GUID;
+}
+
+pub type LPSAFEARRAY = *mut SAFEARRAY;
+
+macro_rules! DEFINE_GUID {
+ (
+ $name:ident, $l:expr, $w1:expr, $w2:expr,
+ $b1:expr, $b2:expr, $b3:expr, $b4:expr, $b5:expr, $b6:expr, $b7:expr, $b8:expr
+ ) => {
+ pub const $name: $crate::winapi::GUID = $crate::winapi::GUID {
+ data1: $l,
+ data2: $w1,
+ data3: $w2,
+ data4: [$b1, $b2, $b3, $b4, $b5, $b6, $b7, $b8],
+ };
+ };
+}
+
+macro_rules! RIDL {
+ (#[uuid($($uuid:expr),+)]
+ interface $interface:ident ($vtbl:ident) {$(
+ fn $method:ident($($p:ident : $t:ty,)*) -> $rtr:ty,
+ )+}) => (
+ #[repr(C)]
+ pub struct $vtbl {
+ $(pub $method: unsafe extern "system" fn(
+ This: *mut $interface,
+ $($p: $t),*
+ ) -> $rtr,)+
+ }
+ #[repr(C)]
+ pub struct $interface {
+ pub lpVtbl: *const $vtbl,
+ }
+ RIDL!{@impl $interface {$(fn $method($($p: $t,)*) -> $rtr,)+}}
+ RIDL!{@uuid $interface $($uuid),+}
+ );
+ (#[uuid($($uuid:expr),+)]
+ interface $interface:ident ($vtbl:ident) : $pinterface:ident ($pvtbl:ident) {
+ }) => (
+ #[repr(C)]
+ pub struct $vtbl {
+ pub parent: $pvtbl,
+ }
+ #[repr(C)]
+ pub struct $interface {
+ pub lpVtbl: *const $vtbl,
+ }
+ RIDL!{@deref $interface $pinterface}
+ RIDL!{@uuid $interface $($uuid),+}
+ );
+ (#[uuid($($uuid:expr),+)]
+ interface $interface:ident ($vtbl:ident) : $pinterface:ident ($pvtbl:ident) {$(
+ fn $method:ident($($p:ident : $t:ty,)*) -> $rtr:ty,
+ )+}) => (
+ #[repr(C)]
+ pub struct $vtbl {
+ pub parent: $pvtbl,
+ $(pub $method: unsafe extern "system" fn(
+ This: *mut $interface,
+ $($p: $t,)*
+ ) -> $rtr,)+
+ }
+ #[repr(C)]
+ pub struct $interface {
+ pub lpVtbl: *const $vtbl,
+ }
+ RIDL!{@impl $interface {$(fn $method($($p: $t,)*) -> $rtr,)+}}
+ RIDL!{@deref $interface $pinterface}
+ RIDL!{@uuid $interface $($uuid),+}
+ );
+ (@deref $interface:ident $pinterface:ident) => (
+ impl ::std::ops::Deref for $interface {
+ type Target = $pinterface;
+ #[inline]
+ fn deref(&self) -> &$pinterface {
+ unsafe { &*(self as *const $interface as *const $pinterface) }
+ }
+ }
+ );
+ (@impl $interface:ident {$(
+ fn $method:ident($($p:ident : $t:ty,)*) -> $rtr:ty,
+ )+}) => (
+ impl $interface {
+ $(#[inline] pub unsafe fn $method(&self, $($p: $t,)*) -> $rtr {
+ ((*self.lpVtbl).$method)(self as *const _ as *mut _, $($p,)*)
+ })+
+ }
+ );
+ (@uuid $interface:ident
+ $l:expr, $w1:expr, $w2:expr,
+ $b1:expr, $b2:expr, $b3:expr, $b4:expr, $b5:expr, $b6:expr, $b7:expr, $b8:expr
+ ) => (
+ impl $crate::winapi::Interface for $interface {
+ #[inline]
+ fn uuidof() -> $crate::winapi::GUID {
+ $crate::winapi::GUID {
+ data1: $l,
+ data2: $w1,
+ data3: $w2,
+ data4: [$b1, $b2, $b3, $b4, $b5, $b6, $b7, $b8],
+ }
+ }
+ }
+ );
+}
+
+RIDL! {#[uuid(0x00000000, 0x0000, 0x0000, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46)]
+interface IUnknown(IUnknownVtbl) {
+ fn QueryInterface(
+ riid: REFIID,
+ ppvObject: *mut *mut raw::c_void,
+ ) -> HRESULT,
+ fn AddRef() -> ULONG,
+ fn Release() -> ULONG,
+}}
diff --git a/vendor/cc/src/windows_registry.rs b/vendor/cc/src/windows_registry.rs
new file mode 100644
index 0000000..07a9c4d
--- /dev/null
+++ b/vendor/cc/src/windows_registry.rs
@@ -0,0 +1,896 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! A helper module to probe the Windows Registry when looking for
+//! windows-specific tools.
+
+use std::process::Command;
+
+use crate::Tool;
+#[cfg(windows)]
+use crate::ToolFamily;
+
+#[cfg(windows)]
+const MSVC_FAMILY: ToolFamily = ToolFamily::Msvc { clang_cl: false };
+
+/// Attempts to find a tool within an MSVC installation using the Windows
+/// registry as a point to search from.
+///
+/// The `target` argument is the target that the tool should work for (e.g.
+/// compile or link for) and the `tool` argument is the tool to find (e.g.
+/// `cl.exe` or `link.exe`).
+///
+/// This function will return `None` if the tool could not be found, or it will
+/// return `Some(cmd)` which represents a command that's ready to execute the
+/// tool with the appropriate environment variables set.
+///
+/// Note that this function always returns `None` for non-MSVC targets.
+pub fn find(target: &str, tool: &str) -> Option<Command> {
+ find_tool(target, tool).map(|c| c.to_command())
+}
+
+/// Similar to the `find` function above, this function will attempt the same
+/// operation (finding a MSVC tool in a local install) but instead returns a
+/// `Tool` which may be introspected.
+#[cfg(not(windows))]
+pub fn find_tool(_target: &str, _tool: &str) -> Option<Tool> {
+ None
+}
+
+/// Documented above.
+#[cfg(windows)]
+pub fn find_tool(target: &str, tool: &str) -> Option<Tool> {
+ // This logic is all tailored for MSVC, if we're not that then bail out
+ // early.
+ if !target.contains("msvc") {
+ return None;
+ }
+
+ // Looks like msbuild isn't located in the same location as other tools like
+ // cl.exe and lib.exe. To handle this we probe for it manually with
+ // dedicated registry keys.
+ if tool.contains("msbuild") {
+ return impl_::find_msbuild(target);
+ }
+
+ if tool.contains("devenv") {
+ return impl_::find_devenv(target);
+ }
+
+ // Ok, if we're here, now comes the fun part of the probing. Default shells
+ // or shells like MSYS aren't really configured to execute `cl.exe` and the
+ // various compiler tools shipped as part of Visual Studio. Here we try to
+ // first find the relevant tool, then we also have to be sure to fill in
+ // environment variables like `LIB`, `INCLUDE`, and `PATH` to ensure that
+ // the tool is actually usable.
+
+ return impl_::find_msvc_environment(tool, target)
+ .or_else(|| impl_::find_msvc_15plus(tool, target))
+ .or_else(|| impl_::find_msvc_14(tool, target))
+ .or_else(|| impl_::find_msvc_12(tool, target))
+ .or_else(|| impl_::find_msvc_11(tool, target));
+}
+
+/// A version of Visual Studio
+#[derive(Debug, PartialEq, Eq, Copy, Clone)]
+#[non_exhaustive]
+pub enum VsVers {
+ /// Visual Studio 12 (2013)
+ Vs12,
+ /// Visual Studio 14 (2015)
+ Vs14,
+ /// Visual Studio 15 (2017)
+ Vs15,
+ /// Visual Studio 16 (2019)
+ Vs16,
+ /// Visual Studio 17 (2022)
+ Vs17,
+}
+
+/// Find the most recent installed version of Visual Studio
+///
+/// This is used by the cmake crate to figure out the correct
+/// generator.
+#[cfg(not(windows))]
+pub fn find_vs_version() -> Result<VsVers, String> {
+ Err("not windows".to_string())
+}
+
+/// Documented above
+#[cfg(windows)]
+pub fn find_vs_version() -> Result<VsVers, String> {
+ use std::env;
+
+ match env::var("VisualStudioVersion") {
+ Ok(version) => match &version[..] {
+ "17.0" => Ok(VsVers::Vs17),
+ "16.0" => Ok(VsVers::Vs16),
+ "15.0" => Ok(VsVers::Vs15),
+ "14.0" => Ok(VsVers::Vs14),
+ "12.0" => Ok(VsVers::Vs12),
+ vers => Err(format!(
+ "\n\n\
+ unsupported or unknown VisualStudio version: {}\n\
+ if another version is installed consider running \
+ the appropriate vcvars script before building this \
+ crate\n\
+ ",
+ vers
+ )),
+ },
+ _ => {
+ // Check for the presence of a specific registry key
+ // that indicates visual studio is installed.
+ if impl_::has_msbuild_version("17.0") {
+ Ok(VsVers::Vs17)
+ } else if impl_::has_msbuild_version("16.0") {
+ Ok(VsVers::Vs16)
+ } else if impl_::has_msbuild_version("15.0") {
+ Ok(VsVers::Vs15)
+ } else if impl_::has_msbuild_version("14.0") {
+ Ok(VsVers::Vs14)
+ } else if impl_::has_msbuild_version("12.0") {
+ Ok(VsVers::Vs12)
+ } else {
+ Err(format!(
+ "\n\n\
+ couldn't determine visual studio generator\n\
+ if VisualStudio is installed, however, consider \
+ running the appropriate vcvars script before building \
+ this crate\n\
+ "
+ ))
+ }
+ }
+ }
+}
+
+#[cfg(windows)]
+mod impl_ {
+ use crate::com;
+ use crate::registry::{RegistryKey, LOCAL_MACHINE};
+ use crate::setup_config::SetupConfiguration;
+ use crate::vs_instances::{VsInstances, VswhereInstance};
+ use std::convert::TryFrom;
+ use std::env;
+ use std::ffi::OsString;
+ use std::fs::File;
+ use std::io::Read;
+ use std::iter;
+ use std::mem;
+ use std::path::{Path, PathBuf};
+ use std::process::Command;
+ use std::str::FromStr;
+
+ use super::MSVC_FAMILY;
+ use crate::Tool;
+
+ struct MsvcTool {
+ tool: PathBuf,
+ libs: Vec<PathBuf>,
+ path: Vec<PathBuf>,
+ include: Vec<PathBuf>,
+ }
+
+ impl MsvcTool {
+ fn new(tool: PathBuf) -> MsvcTool {
+ MsvcTool {
+ tool: tool,
+ libs: Vec::new(),
+ path: Vec::new(),
+ include: Vec::new(),
+ }
+ }
+
+ fn into_tool(self) -> Tool {
+ let MsvcTool {
+ tool,
+ libs,
+ path,
+ include,
+ } = self;
+ let mut tool = Tool::with_family(tool.into(), MSVC_FAMILY);
+ add_env(&mut tool, "LIB", libs);
+ add_env(&mut tool, "PATH", path);
+ add_env(&mut tool, "INCLUDE", include);
+ tool
+ }
+ }
+
+ /// Checks to see if the `VSCMD_ARG_TGT_ARCH` environment variable matches the
+ /// given target's arch. Returns `None` if the variable does not exist.
+ #[cfg(windows)]
+ fn is_vscmd_target(target: &str) -> Option<bool> {
+ let vscmd_arch = env::var("VSCMD_ARG_TGT_ARCH").ok()?;
+ // Convert the Rust target arch to its VS arch equivalent.
+ let arch = match target.split("-").next() {
+ Some("x86_64") => "x64",
+ Some("aarch64") => "arm64",
+ Some("i686") | Some("i586") => "x86",
+ Some("thumbv7a") => "arm",
+ // An unrecognized arch.
+ _ => return Some(false),
+ };
+ Some(vscmd_arch == arch)
+ }
+
+ /// Attempt to find the tool using environment variables set by vcvars.
+ pub fn find_msvc_environment(tool: &str, target: &str) -> Option<Tool> {
+ // Early return if the environment doesn't contain a VC install.
+ if env::var_os("VCINSTALLDIR").is_none() {
+ return None;
+ }
+ let vs_install_dir = env::var_os("VSINSTALLDIR")?.into();
+
+ // If the vscmd target differs from the requested target then
+ // attempt to get the tool using the VS install directory.
+ if is_vscmd_target(target) == Some(false) {
+ // We will only get here with versions 15+.
+ tool_from_vs15plus_instance(tool, target, &vs_install_dir)
+ } else {
+ // Fallback to simply using the current environment.
+ env::var_os("PATH")
+ .and_then(|path| {
+ env::split_paths(&path)
+ .map(|p| p.join(tool))
+ .find(|p| p.exists())
+ })
+ .map(|path| Tool::with_family(path.into(), MSVC_FAMILY))
+ }
+ }
+
+ fn find_msbuild_vs17(target: &str) -> Option<Tool> {
+ find_tool_in_vs16plus_path(r"MSBuild\Current\Bin\MSBuild.exe", target, "17")
+ }
+
+ #[allow(bare_trait_objects)]
+ fn vs16plus_instances(target: &str, version: &'static str) -> Box<Iterator<Item = PathBuf>> {
+ let instances = if let Some(instances) = vs15plus_instances(target) {
+ instances
+ } else {
+ return Box::new(iter::empty());
+ };
+ Box::new(instances.into_iter().filter_map(move |instance| {
+ let installation_name = instance.installation_name()?;
+ if installation_name.starts_with(&format!("VisualStudio/{}.", version)) {
+ Some(instance.installation_path()?)
+ } else if installation_name.starts_with(&format!("VisualStudioPreview/{}.", version)) {
+ Some(instance.installation_path()?)
+ } else {
+ None
+ }
+ }))
+ }
+
+ fn find_tool_in_vs16plus_path(tool: &str, target: &str, version: &'static str) -> Option<Tool> {
+ vs16plus_instances(target, version)
+ .filter_map(|path| {
+ let path = path.join(tool);
+ if !path.is_file() {
+ return None;
+ }
+ let mut tool = Tool::with_family(path, MSVC_FAMILY);
+ if target.contains("x86_64") {
+ tool.env.push(("Platform".into(), "X64".into()));
+ }
+ if target.contains("aarch64") {
+ tool.env.push(("Platform".into(), "ARM64".into()));
+ }
+ Some(tool)
+ })
+ .next()
+ }
+
+ fn find_msbuild_vs16(target: &str) -> Option<Tool> {
+ find_tool_in_vs16plus_path(r"MSBuild\Current\Bin\MSBuild.exe", target, "16")
+ }
+
+ // In MSVC 15 (2017) MS once again changed the scheme for locating
+ // the tooling. Now we must go through some COM interfaces, which
+ // is super fun for Rust.
+ //
+ // Note that much of this logic can be found [online] wrt paths, COM, etc.
+ //
+ // [online]: https://blogs.msdn.microsoft.com/vcblog/2017/03/06/finding-the-visual-c-compiler-tools-in-visual-studio-2017/
+ //
+ // Returns MSVC 15+ instances (15, 16 right now), the order should be consider undefined.
+ //
+ // However, on ARM64 this method doesn't work because VS Installer fails to register COM component on ARM64.
+ // Hence, as the last resort we try to use vswhere.exe to list available instances.
+ fn vs15plus_instances(target: &str) -> Option<VsInstances> {
+ vs15plus_instances_using_com().or_else(|| vs15plus_instances_using_vswhere(target))
+ }
+
+ fn vs15plus_instances_using_com() -> Option<VsInstances> {
+ com::initialize().ok()?;
+
+ let config = SetupConfiguration::new().ok()?;
+ let enum_setup_instances = config.enum_all_instances().ok()?;
+
+ Some(VsInstances::ComBased(enum_setup_instances))
+ }
+
+ fn vs15plus_instances_using_vswhere(target: &str) -> Option<VsInstances> {
+ let program_files_path: PathBuf = env::var("ProgramFiles(x86)")
+ .or_else(|_| env::var("ProgramFiles"))
+ .ok()?
+ .into();
+
+ let vswhere_path =
+ program_files_path.join(r"Microsoft Visual Studio\Installer\vswhere.exe");
+
+ if !vswhere_path.exists() {
+ return None;
+ }
+
+ let arch = target.split('-').next().unwrap();
+ let tools_arch = match arch {
+ "i586" | "i686" | "x86_64" => Some("x86.x64"),
+ "arm" | "thumbv7a" => Some("ARM"),
+ "aarch64" => Some("ARM64"),
+ _ => None,
+ };
+
+ let vswhere_output = Command::new(vswhere_path)
+ .args(&[
+ "-latest",
+ "-products",
+ "*",
+ "-requires",
+ &format!("Microsoft.VisualStudio.Component.VC.Tools.{}", tools_arch?),
+ "-format",
+ "text",
+ "-nologo",
+ ])
+ .stderr(std::process::Stdio::inherit())
+ .output()
+ .ok()?;
+
+ let vs_instances =
+ VsInstances::VswhereBased(VswhereInstance::try_from(&vswhere_output.stdout).ok()?);
+
+ Some(vs_instances)
+ }
+
+ // Inspired from official microsoft/vswhere ParseVersionString
+ // i.e. at most four u16 numbers separated by '.'
+ fn parse_version(version: &str) -> Option<Vec<u16>> {
+ version
+ .split('.')
+ .map(|chunk| u16::from_str(chunk).ok())
+ .collect()
+ }
+
+ pub fn find_msvc_15plus(tool: &str, target: &str) -> Option<Tool> {
+ let iter = vs15plus_instances(target)?;
+ iter.into_iter()
+ .filter_map(|instance| {
+ let version = parse_version(&instance.installation_version()?)?;
+ let instance_path = instance.installation_path()?;
+ let tool = tool_from_vs15plus_instance(tool, target, &instance_path)?;
+ Some((version, tool))
+ })
+ .max_by(|(a_version, _), (b_version, _)| a_version.cmp(b_version))
+ .map(|(_version, tool)| tool)
+ }
+
+ // While the paths to Visual Studio 2017's devenv and MSBuild could
+ // potentially be retrieved from the registry, finding them via
+ // SetupConfiguration has shown to be [more reliable], and is preferred
+ // according to Microsoft. To help head off potential regressions though,
+ // we keep the registry method as a fallback option.
+ //
+ // [more reliable]: https://github.com/rust-lang/cc-rs/pull/331
+ fn find_tool_in_vs15_path(tool: &str, target: &str) -> Option<Tool> {
+ let mut path = match vs15plus_instances(target) {
+ Some(instances) => instances
+ .into_iter()
+ .filter_map(|instance| instance.installation_path())
+ .map(|path| path.join(tool))
+ .find(|ref path| path.is_file()),
+ None => None,
+ };
+
+ if path.is_none() {
+ let key = r"SOFTWARE\WOW6432Node\Microsoft\VisualStudio\SxS\VS7";
+ path = LOCAL_MACHINE
+ .open(key.as_ref())
+ .ok()
+ .and_then(|key| key.query_str("15.0").ok())
+ .map(|path| PathBuf::from(path).join(tool))
+ .and_then(|path| if path.is_file() { Some(path) } else { None });
+ }
+
+ path.map(|path| {
+ let mut tool = Tool::with_family(path, MSVC_FAMILY);
+ if target.contains("x86_64") {
+ tool.env.push(("Platform".into(), "X64".into()));
+ }
+ if target.contains("aarch64") {
+ tool.env.push(("Platform".into(), "ARM64".into()));
+ }
+ tool
+ })
+ }
+
+ fn tool_from_vs15plus_instance(
+ tool: &str,
+ target: &str,
+ instance_path: &PathBuf,
+ ) -> Option<Tool> {
+ let (root_path, bin_path, host_dylib_path, lib_path, include_path) =
+ vs15plus_vc_paths(target, instance_path)?;
+ let tool_path = bin_path.join(tool);
+ if !tool_path.exists() {
+ return None;
+ };
+
+ let mut tool = MsvcTool::new(tool_path);
+ tool.path.push(bin_path.clone());
+ tool.path.push(host_dylib_path);
+ tool.libs.push(lib_path);
+ tool.include.push(include_path);
+
+ if let Some((atl_lib_path, atl_include_path)) = atl_paths(target, &root_path) {
+ tool.libs.push(atl_lib_path);
+ tool.include.push(atl_include_path);
+ }
+
+ add_sdks(&mut tool, target)?;
+
+ Some(tool.into_tool())
+ }
+
+ fn vs15plus_vc_paths(
+ target: &str,
+ instance_path: &PathBuf,
+ ) -> Option<(PathBuf, PathBuf, PathBuf, PathBuf, PathBuf)> {
+ let version_path =
+ instance_path.join(r"VC\Auxiliary\Build\Microsoft.VCToolsVersion.default.txt");
+ let mut version_file = File::open(version_path).ok()?;
+ let mut version = String::new();
+ version_file.read_to_string(&mut version).ok()?;
+ let version = version.trim();
+ let host = match host_arch() {
+ X86 => "X86",
+ X86_64 => "X64",
+ // There is no natively hosted compiler on ARM64.
+ // Instead, use the x86 toolchain under emulation (there is no x64 emulation).
+ AARCH64 => "X86",
+ _ => return None,
+ };
+ let target = lib_subdir(target)?;
+ // The directory layout here is MSVC/bin/Host$host/$target/
+ let path = instance_path.join(r"VC\Tools\MSVC").join(version);
+ // This is the path to the toolchain for a particular target, running
+ // on a given host
+ let bin_path = path
+ .join("bin")
+ .join(&format!("Host{}", host))
+ .join(&target);
+ // But! we also need PATH to contain the target directory for the host
+ // architecture, because it contains dlls like mspdb140.dll compiled for
+ // the host architecture.
+ let host_dylib_path = path
+ .join("bin")
+ .join(&format!("Host{}", host))
+ .join(&host.to_lowercase());
+ let lib_path = path.join("lib").join(&target);
+ let include_path = path.join("include");
+ Some((path, bin_path, host_dylib_path, lib_path, include_path))
+ }
+
+ fn atl_paths(target: &str, path: &Path) -> Option<(PathBuf, PathBuf)> {
+ let atl_path = path.join("atlmfc");
+ let sub = lib_subdir(target)?;
+ if atl_path.exists() {
+ Some((atl_path.join("lib").join(sub), atl_path.join("include")))
+ } else {
+ None
+ }
+ }
+
+ // For MSVC 14 we need to find the Universal CRT as well as either
+ // the Windows 10 SDK or Windows 8.1 SDK.
+ pub fn find_msvc_14(tool: &str, target: &str) -> Option<Tool> {
+ let vcdir = get_vc_dir("14.0")?;
+ let mut tool = get_tool(tool, &vcdir, target)?;
+ add_sdks(&mut tool, target)?;
+ Some(tool.into_tool())
+ }
+
+ fn add_sdks(tool: &mut MsvcTool, target: &str) -> Option<()> {
+ let sub = lib_subdir(target)?;
+ let (ucrt, ucrt_version) = get_ucrt_dir()?;
+
+ let host = match host_arch() {
+ X86 => "x86",
+ X86_64 => "x64",
+ AARCH64 => "arm64",
+ _ => return None,
+ };
+
+ tool.path
+ .push(ucrt.join("bin").join(&ucrt_version).join(host));
+
+ let ucrt_include = ucrt.join("include").join(&ucrt_version);
+ tool.include.push(ucrt_include.join("ucrt"));
+
+ let ucrt_lib = ucrt.join("lib").join(&ucrt_version);
+ tool.libs.push(ucrt_lib.join("ucrt").join(sub));
+
+ if let Some((sdk, version)) = get_sdk10_dir() {
+ tool.path.push(sdk.join("bin").join(host));
+ let sdk_lib = sdk.join("lib").join(&version);
+ tool.libs.push(sdk_lib.join("um").join(sub));
+ let sdk_include = sdk.join("include").join(&version);
+ tool.include.push(sdk_include.join("um"));
+ tool.include.push(sdk_include.join("cppwinrt"));
+ tool.include.push(sdk_include.join("winrt"));
+ tool.include.push(sdk_include.join("shared"));
+ } else if let Some(sdk) = get_sdk81_dir() {
+ tool.path.push(sdk.join("bin").join(host));
+ let sdk_lib = sdk.join("lib").join("winv6.3");
+ tool.libs.push(sdk_lib.join("um").join(sub));
+ let sdk_include = sdk.join("include");
+ tool.include.push(sdk_include.join("um"));
+ tool.include.push(sdk_include.join("winrt"));
+ tool.include.push(sdk_include.join("shared"));
+ }
+
+ Some(())
+ }
+
+ // For MSVC 12 we need to find the Windows 8.1 SDK.
+ pub fn find_msvc_12(tool: &str, target: &str) -> Option<Tool> {
+ let vcdir = get_vc_dir("12.0")?;
+ let mut tool = get_tool(tool, &vcdir, target)?;
+ let sub = lib_subdir(target)?;
+ let sdk81 = get_sdk81_dir()?;
+ tool.path.push(sdk81.join("bin").join(sub));
+ let sdk_lib = sdk81.join("lib").join("winv6.3");
+ tool.libs.push(sdk_lib.join("um").join(sub));
+ let sdk_include = sdk81.join("include");
+ tool.include.push(sdk_include.join("shared"));
+ tool.include.push(sdk_include.join("um"));
+ tool.include.push(sdk_include.join("winrt"));
+ Some(tool.into_tool())
+ }
+
+ // For MSVC 11 we need to find the Windows 8 SDK.
+ pub fn find_msvc_11(tool: &str, target: &str) -> Option<Tool> {
+ let vcdir = get_vc_dir("11.0")?;
+ let mut tool = get_tool(tool, &vcdir, target)?;
+ let sub = lib_subdir(target)?;
+ let sdk8 = get_sdk8_dir()?;
+ tool.path.push(sdk8.join("bin").join(sub));
+ let sdk_lib = sdk8.join("lib").join("win8");
+ tool.libs.push(sdk_lib.join("um").join(sub));
+ let sdk_include = sdk8.join("include");
+ tool.include.push(sdk_include.join("shared"));
+ tool.include.push(sdk_include.join("um"));
+ tool.include.push(sdk_include.join("winrt"));
+ Some(tool.into_tool())
+ }
+
+ fn add_env(tool: &mut Tool, env: &str, paths: Vec<PathBuf>) {
+ let prev = env::var_os(env).unwrap_or(OsString::new());
+ let prev = env::split_paths(&prev);
+ let new = paths.into_iter().chain(prev);
+ tool.env
+ .push((env.to_string().into(), env::join_paths(new).unwrap()));
+ }
+
+ // Given a possible MSVC installation directory, we look for the linker and
+ // then add the MSVC library path.
+ fn get_tool(tool: &str, path: &Path, target: &str) -> Option<MsvcTool> {
+ bin_subdir(target)
+ .into_iter()
+ .map(|(sub, host)| {
+ (
+ path.join("bin").join(sub).join(tool),
+ path.join("bin").join(host),
+ )
+ })
+ .filter(|&(ref path, _)| path.is_file())
+ .map(|(path, host)| {
+ let mut tool = MsvcTool::new(path);
+ tool.path.push(host);
+ tool
+ })
+ .filter_map(|mut tool| {
+ let sub = vc_lib_subdir(target)?;
+ tool.libs.push(path.join("lib").join(sub));
+ tool.include.push(path.join("include"));
+ let atlmfc_path = path.join("atlmfc");
+ if atlmfc_path.exists() {
+ tool.libs.push(atlmfc_path.join("lib").join(sub));
+ tool.include.push(atlmfc_path.join("include"));
+ }
+ Some(tool)
+ })
+ .next()
+ }
+
+ // To find MSVC we look in a specific registry key for the version we are
+ // trying to find.
+ fn get_vc_dir(ver: &str) -> Option<PathBuf> {
+ let key = r"SOFTWARE\Microsoft\VisualStudio\SxS\VC7";
+ let key = LOCAL_MACHINE.open(key.as_ref()).ok()?;
+ let path = key.query_str(ver).ok()?;
+ Some(path.into())
+ }
+
+ // To find the Universal CRT we look in a specific registry key for where
+ // all the Universal CRTs are located and then sort them asciibetically to
+ // find the newest version. While this sort of sorting isn't ideal, it is
+ // what vcvars does so that's good enough for us.
+ //
+ // Returns a pair of (root, version) for the ucrt dir if found
+ fn get_ucrt_dir() -> Option<(PathBuf, String)> {
+ let key = r"SOFTWARE\Microsoft\Windows Kits\Installed Roots";
+ let key = LOCAL_MACHINE.open(key.as_ref()).ok()?;
+ let root = key.query_str("KitsRoot10").ok()?;
+ let readdir = Path::new(&root).join("lib").read_dir().ok()?;
+ let max_libdir = readdir
+ .filter_map(|dir| dir.ok())
+ .map(|dir| dir.path())
+ .filter(|dir| {
+ dir.components()
+ .last()
+ .and_then(|c| c.as_os_str().to_str())
+ .map(|c| c.starts_with("10.") && dir.join("ucrt").is_dir())
+ .unwrap_or(false)
+ })
+ .max()?;
+ let version = max_libdir.components().last().unwrap();
+ let version = version.as_os_str().to_str().unwrap().to_string();
+ Some((root.into(), version))
+ }
+
+ // Vcvars finds the correct version of the Windows 10 SDK by looking
+ // for the include `um\Windows.h` because sometimes a given version will
+ // only have UCRT bits without the rest of the SDK. Since we only care about
+ // libraries and not includes, we instead look for `um\x64\kernel32.lib`.
+ // Since the 32-bit and 64-bit libraries are always installed together we
+ // only need to bother checking x64, making this code a tiny bit simpler.
+ // Like we do for the Universal CRT, we sort the possibilities
+ // asciibetically to find the newest one as that is what vcvars does.
+ // Before doing that, we check the "WindowsSdkDir" and "WindowsSDKVersion"
+ // environment variables set by vcvars to use the environment sdk version
+ // if one is already configured.
+ fn get_sdk10_dir() -> Option<(PathBuf, String)> {
+ if let (Ok(root), Ok(version)) = (env::var("WindowsSdkDir"), env::var("WindowsSDKVersion"))
+ {
+ return Some((root.into(), version.trim_end_matches('\\').to_string()));
+ }
+
+ let key = r"SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0";
+ let key = LOCAL_MACHINE.open(key.as_ref()).ok()?;
+ let root = key.query_str("InstallationFolder").ok()?;
+ let readdir = Path::new(&root).join("lib").read_dir().ok()?;
+ let mut dirs = readdir
+ .filter_map(|dir| dir.ok())
+ .map(|dir| dir.path())
+ .collect::<Vec<_>>();
+ dirs.sort();
+ let dir = dirs
+ .into_iter()
+ .rev()
+ .filter(|dir| dir.join("um").join("x64").join("kernel32.lib").is_file())
+ .next()?;
+ let version = dir.components().last().unwrap();
+ let version = version.as_os_str().to_str().unwrap().to_string();
+ Some((root.into(), version))
+ }
+
+ // Interestingly there are several subdirectories, `win7` `win8` and
+ // `winv6.3`. Vcvars seems to only care about `winv6.3` though, so the same
+ // applies to us. Note that if we were targeting kernel mode drivers
+ // instead of user mode applications, we would care.
+ fn get_sdk81_dir() -> Option<PathBuf> {
+ let key = r"SOFTWARE\Microsoft\Microsoft SDKs\Windows\v8.1";
+ let key = LOCAL_MACHINE.open(key.as_ref()).ok()?;
+ let root = key.query_str("InstallationFolder").ok()?;
+ Some(root.into())
+ }
+
+ fn get_sdk8_dir() -> Option<PathBuf> {
+ let key = r"SOFTWARE\Microsoft\Microsoft SDKs\Windows\v8.0";
+ let key = LOCAL_MACHINE.open(key.as_ref()).ok()?;
+ let root = key.query_str("InstallationFolder").ok()?;
+ Some(root.into())
+ }
+
+ const PROCESSOR_ARCHITECTURE_INTEL: u16 = 0;
+ const PROCESSOR_ARCHITECTURE_AMD64: u16 = 9;
+ const PROCESSOR_ARCHITECTURE_ARM64: u16 = 12;
+ const X86: u16 = PROCESSOR_ARCHITECTURE_INTEL;
+ const X86_64: u16 = PROCESSOR_ARCHITECTURE_AMD64;
+ const AARCH64: u16 = PROCESSOR_ARCHITECTURE_ARM64;
+
+ // When choosing the tool to use, we have to choose the one which matches
+ // the target architecture. Otherwise we end up in situations where someone
+ // on 32-bit Windows is trying to cross compile to 64-bit and it tries to
+ // invoke the native 64-bit compiler which won't work.
+ //
+ // For the return value of this function, the first member of the tuple is
+ // the folder of the tool we will be invoking, while the second member is
+ // the folder of the host toolchain for that tool which is essential when
+ // using a cross linker. We return a Vec since on x64 there are often two
+ // linkers that can target the architecture we desire. The 64-bit host
+ // linker is preferred, and hence first, due to 64-bit allowing it more
+ // address space to work with and potentially being faster.
+ fn bin_subdir(target: &str) -> Vec<(&'static str, &'static str)> {
+ let arch = target.split('-').next().unwrap();
+ match (arch, host_arch()) {
+ ("i586", X86) | ("i686", X86) => vec![("", "")],
+ ("i586", X86_64) | ("i686", X86_64) => vec![("amd64_x86", "amd64"), ("", "")],
+ ("x86_64", X86) => vec![("x86_amd64", "")],
+ ("x86_64", X86_64) => vec![("amd64", "amd64"), ("x86_amd64", "")],
+ ("arm", X86) | ("thumbv7a", X86) => vec![("x86_arm", "")],
+ ("arm", X86_64) | ("thumbv7a", X86_64) => vec![("amd64_arm", "amd64"), ("x86_arm", "")],
+ _ => vec![],
+ }
+ }
+
+ fn lib_subdir(target: &str) -> Option<&'static str> {
+ let arch = target.split('-').next().unwrap();
+ match arch {
+ "i586" | "i686" => Some("x86"),
+ "x86_64" => Some("x64"),
+ "arm" | "thumbv7a" => Some("arm"),
+ "aarch64" => Some("arm64"),
+ _ => None,
+ }
+ }
+
+ // MSVC's x86 libraries are not in a subfolder
+ fn vc_lib_subdir(target: &str) -> Option<&'static str> {
+ let arch = target.split('-').next().unwrap();
+ match arch {
+ "i586" | "i686" => Some(""),
+ "x86_64" => Some("amd64"),
+ "arm" | "thumbv7a" => Some("arm"),
+ "aarch64" => Some("arm64"),
+ _ => None,
+ }
+ }
+
+ #[allow(bad_style)]
+ fn host_arch() -> u16 {
+ type DWORD = u32;
+ type WORD = u16;
+ type LPVOID = *mut u8;
+ type DWORD_PTR = usize;
+
+ #[repr(C)]
+ struct SYSTEM_INFO {
+ wProcessorArchitecture: WORD,
+ _wReserved: WORD,
+ _dwPageSize: DWORD,
+ _lpMinimumApplicationAddress: LPVOID,
+ _lpMaximumApplicationAddress: LPVOID,
+ _dwActiveProcessorMask: DWORD_PTR,
+ _dwNumberOfProcessors: DWORD,
+ _dwProcessorType: DWORD,
+ _dwAllocationGranularity: DWORD,
+ _wProcessorLevel: WORD,
+ _wProcessorRevision: WORD,
+ }
+
+ extern "system" {
+ fn GetNativeSystemInfo(lpSystemInfo: *mut SYSTEM_INFO);
+ }
+
+ unsafe {
+ let mut info = mem::zeroed();
+ GetNativeSystemInfo(&mut info);
+ info.wProcessorArchitecture
+ }
+ }
+
+ // Given a registry key, look at all the sub keys and find the one which has
+ // the maximal numeric value.
+ //
+ // Returns the name of the maximal key as well as the opened maximal key.
+ fn max_version(key: &RegistryKey) -> Option<(OsString, RegistryKey)> {
+ let mut max_vers = 0;
+ let mut max_key = None;
+ for subkey in key.iter().filter_map(|k| k.ok()) {
+ let val = subkey
+ .to_str()
+ .and_then(|s| s.trim_left_matches("v").replace(".", "").parse().ok());
+ let val = match val {
+ Some(s) => s,
+ None => continue,
+ };
+ if val > max_vers {
+ if let Ok(k) = key.open(&subkey) {
+ max_vers = val;
+ max_key = Some((subkey, k));
+ }
+ }
+ }
+ max_key
+ }
+
+ pub fn has_msbuild_version(version: &str) -> bool {
+ match version {
+ "17.0" => {
+ find_msbuild_vs17("x86_64-pc-windows-msvc").is_some()
+ || find_msbuild_vs17("i686-pc-windows-msvc").is_some()
+ || find_msbuild_vs17("aarch64-pc-windows-msvc").is_some()
+ }
+ "16.0" => {
+ find_msbuild_vs16("x86_64-pc-windows-msvc").is_some()
+ || find_msbuild_vs16("i686-pc-windows-msvc").is_some()
+ || find_msbuild_vs16("aarch64-pc-windows-msvc").is_some()
+ }
+ "15.0" => {
+ find_msbuild_vs15("x86_64-pc-windows-msvc").is_some()
+ || find_msbuild_vs15("i686-pc-windows-msvc").is_some()
+ || find_msbuild_vs15("aarch64-pc-windows-msvc").is_some()
+ }
+ "12.0" | "14.0" => LOCAL_MACHINE
+ .open(&OsString::from(format!(
+ "SOFTWARE\\Microsoft\\MSBuild\\ToolsVersions\\{}",
+ version
+ )))
+ .is_ok(),
+ _ => false,
+ }
+ }
+
+ pub fn find_devenv(target: &str) -> Option<Tool> {
+ find_devenv_vs15(&target)
+ }
+
+ fn find_devenv_vs15(target: &str) -> Option<Tool> {
+ find_tool_in_vs15_path(r"Common7\IDE\devenv.exe", target)
+ }
+
+ // see http://stackoverflow.com/questions/328017/path-to-msbuild
+ pub fn find_msbuild(target: &str) -> Option<Tool> {
+ // VS 15 (2017) changed how to locate msbuild
+ if let Some(r) = find_msbuild_vs17(target) {
+ return Some(r);
+ } else if let Some(r) = find_msbuild_vs16(target) {
+ return Some(r);
+ } else if let Some(r) = find_msbuild_vs15(target) {
+ return Some(r);
+ } else {
+ find_old_msbuild(target)
+ }
+ }
+
+ fn find_msbuild_vs15(target: &str) -> Option<Tool> {
+ find_tool_in_vs15_path(r"MSBuild\15.0\Bin\MSBuild.exe", target)
+ }
+
+ fn find_old_msbuild(target: &str) -> Option<Tool> {
+ let key = r"SOFTWARE\Microsoft\MSBuild\ToolsVersions";
+ LOCAL_MACHINE
+ .open(key.as_ref())
+ .ok()
+ .and_then(|key| {
+ max_version(&key).and_then(|(_vers, key)| key.query_str("MSBuildToolsPath").ok())
+ })
+ .map(|path| {
+ let mut path = PathBuf::from(path);
+ path.push("MSBuild.exe");
+ let mut tool = Tool::with_family(path, MSVC_FAMILY);
+ if target.contains("x86_64") {
+ tool.env.push(("Platform".into(), "X64".into()));
+ }
+ tool
+ })
+ }
+}
diff --git a/vendor/cc/src/windows_sys.rs b/vendor/cc/src/windows_sys.rs
new file mode 100644
index 0000000..ee4704d
--- /dev/null
+++ b/vendor/cc/src/windows_sys.rs
@@ -0,0 +1,198 @@
+// This file is autogenerated.
+//
+// To add bindings, edit windows_sys.lst then run:
+//
+// ```
+// cd generate-windows-sys/
+// cargo run
+// ```
+// Bindings generated by `windows-bindgen` 0.49.0
+
+#![allow(
+ non_snake_case,
+ non_upper_case_globals,
+ non_camel_case_types,
+ dead_code,
+ clippy::all
+)]
+#[link(name = "advapi32")]
+extern "system" {
+ pub fn RegCloseKey(hkey: HKEY) -> WIN32_ERROR;
+}
+#[link(name = "advapi32")]
+extern "system" {
+ pub fn RegEnumKeyExW(
+ hkey: HKEY,
+ dwindex: u32,
+ lpname: PWSTR,
+ lpcchname: *mut u32,
+ lpreserved: *const u32,
+ lpclass: PWSTR,
+ lpcchclass: *mut u32,
+ lpftlastwritetime: *mut FILETIME,
+ ) -> WIN32_ERROR;
+}
+#[link(name = "advapi32")]
+extern "system" {
+ pub fn RegOpenKeyExW(
+ hkey: HKEY,
+ lpsubkey: PCWSTR,
+ uloptions: u32,
+ samdesired: REG_SAM_FLAGS,
+ phkresult: *mut HKEY,
+ ) -> WIN32_ERROR;
+}
+#[link(name = "advapi32")]
+extern "system" {
+ pub fn RegQueryValueExW(
+ hkey: HKEY,
+ lpvaluename: PCWSTR,
+ lpreserved: *const u32,
+ lptype: *mut REG_VALUE_TYPE,
+ lpdata: *mut u8,
+ lpcbdata: *mut u32,
+ ) -> WIN32_ERROR;
+}
+#[link(name = "kernel32")]
+extern "system" {
+ pub fn CreatePipe(
+ hreadpipe: *mut HANDLE,
+ hwritepipe: *mut HANDLE,
+ lppipeattributes: *const SECURITY_ATTRIBUTES,
+ nsize: u32,
+ ) -> BOOL;
+}
+#[link(name = "ole32")]
+extern "system" {
+ pub fn CoCreateInstance(
+ rclsid: *const GUID,
+ punkouter: IUnknown,
+ dwclscontext: CLSCTX,
+ riid: *const GUID,
+ ppv: *mut *mut ::core::ffi::c_void,
+ ) -> HRESULT;
+}
+#[link(name = "ole32")]
+extern "system" {
+ pub fn CoInitializeEx(pvreserved: *const ::core::ffi::c_void, dwcoinit: COINIT) -> HRESULT;
+}
+#[link(name = "oleaut32")]
+extern "system" {
+ pub fn SysFreeString(bstrstring: BSTR) -> ();
+}
+#[link(name = "oleaut32")]
+extern "system" {
+ pub fn SysStringLen(pbstr: BSTR) -> u32;
+}
+pub type ADVANCED_FEATURE_FLAGS = u16;
+pub type BOOL = i32;
+pub type BSTR = *const u16;
+pub type CLSCTX = u32;
+pub const CLSCTX_ALL: CLSCTX = 23u32;
+pub type COINIT = i32;
+pub const COINIT_MULTITHREADED: COINIT = 0i32;
+pub const ERROR_NO_MORE_ITEMS: WIN32_ERROR = 259u32;
+pub const ERROR_SUCCESS: WIN32_ERROR = 0u32;
+#[repr(C)]
+pub struct FILETIME {
+ pub dwLowDateTime: u32,
+ pub dwHighDateTime: u32,
+}
+impl ::core::marker::Copy for FILETIME {}
+impl ::core::clone::Clone for FILETIME {
+ fn clone(&self) -> Self {
+ *self
+ }
+}
+#[repr(C)]
+pub struct GUID {
+ pub data1: u32,
+ pub data2: u16,
+ pub data3: u16,
+ pub data4: [u8; 8],
+}
+impl GUID {
+ pub const fn from_u128(uuid: u128) -> Self {
+ Self {
+ data1: (uuid >> 96) as u32,
+ data2: (uuid >> 80 & 0xffff) as u16,
+ data3: (uuid >> 64 & 0xffff) as u16,
+ data4: (uuid as u64).to_be_bytes(),
+ }
+ }
+}
+impl ::core::marker::Copy for GUID {}
+impl ::core::clone::Clone for GUID {
+ fn clone(&self) -> Self {
+ *self
+ }
+}
+pub type HANDLE = *mut ::core::ffi::c_void;
+pub type HKEY = *mut ::core::ffi::c_void;
+pub const HKEY_LOCAL_MACHINE: HKEY = invalid_mut(-2147483646i32 as _);
+pub type HRESULT = i32;
+pub const INVALID_HANDLE_VALUE: HANDLE = invalid_mut(-1i32 as _);
+pub type IUnknown = *mut ::core::ffi::c_void;
+pub const KEY_READ: REG_SAM_FLAGS = 131097u32;
+pub const KEY_WOW64_32KEY: REG_SAM_FLAGS = 512u32;
+pub type PCWSTR = *const u16;
+pub type PWSTR = *mut u16;
+pub type REG_SAM_FLAGS = u32;
+pub const REG_SZ: REG_VALUE_TYPE = 1u32;
+pub type REG_VALUE_TYPE = u32;
+#[repr(C)]
+pub struct SAFEARRAY {
+ pub cDims: u16,
+ pub fFeatures: ADVANCED_FEATURE_FLAGS,
+ pub cbElements: u32,
+ pub cLocks: u32,
+ pub pvData: *mut ::core::ffi::c_void,
+ pub rgsabound: [SAFEARRAYBOUND; 1],
+}
+impl ::core::marker::Copy for SAFEARRAY {}
+impl ::core::clone::Clone for SAFEARRAY {
+ fn clone(&self) -> Self {
+ *self
+ }
+}
+#[repr(C)]
+pub struct SAFEARRAYBOUND {
+ pub cElements: u32,
+ pub lLbound: i32,
+}
+impl ::core::marker::Copy for SAFEARRAYBOUND {}
+impl ::core::clone::Clone for SAFEARRAYBOUND {
+ fn clone(&self) -> Self {
+ *self
+ }
+}
+#[repr(C)]
+pub struct SECURITY_ATTRIBUTES {
+ pub nLength: u32,
+ pub lpSecurityDescriptor: *mut ::core::ffi::c_void,
+ pub bInheritHandle: BOOL,
+}
+impl ::core::marker::Copy for SECURITY_ATTRIBUTES {}
+impl ::core::clone::Clone for SECURITY_ATTRIBUTES {
+ fn clone(&self) -> Self {
+ *self
+ }
+}
+pub const S_FALSE: HRESULT = 1i32;
+pub const S_OK: HRESULT = 0i32;
+pub type WIN32_ERROR = u32;
+
+/// Adapted from
+/// [`core::ptr::invalid_mut()`](https://doc.rust-lang.org/src/core/ptr/mod.rs.html#600-607).
+///
+/// This function should actually use `core::mem::transmute` but due to msrv
+/// we use `as` casting instead.
+///
+/// Once msrv is bumped to 1.56, replace this with `core::mem::transmute` since
+/// it is const stablised in 1.56
+///
+/// NOTE that once supports `strict_provenance` we would also have to update
+/// this.
+const fn invalid_mut<T>(addr: usize) -> *mut T {
+ addr as *mut T
+}
diff --git a/vendor/cc/tests/cc_env.rs b/vendor/cc/tests/cc_env.rs
new file mode 100644
index 0000000..43eb689
--- /dev/null
+++ b/vendor/cc/tests/cc_env.rs
@@ -0,0 +1,118 @@
+use std::env;
+use std::ffi::OsString;
+use std::path::Path;
+
+mod support;
+use crate::support::Test;
+
+#[test]
+fn main() {
+ ccache();
+ distcc();
+ ccache_spaces();
+ ccache_env_flags();
+ leading_spaces();
+ extra_flags();
+ path_to_ccache();
+ more_spaces();
+}
+
+fn ccache() {
+ let test = Test::gnu();
+
+ env::set_var("CC", "ccache cc");
+ let compiler = test.gcc().file("foo.c").get_compiler();
+
+ assert_eq!(compiler.path(), Path::new("cc"));
+}
+
+fn ccache_spaces() {
+ let test = Test::gnu();
+ test.shim("ccache");
+
+ env::set_var("CC", "ccache cc");
+ let compiler = test.gcc().file("foo.c").get_compiler();
+ assert_eq!(compiler.path(), Path::new("cc"));
+}
+
+fn distcc() {
+ let test = Test::gnu();
+ test.shim("distcc");
+
+ env::set_var("CC", "distcc cc");
+ let compiler = test.gcc().file("foo.c").get_compiler();
+ assert_eq!(compiler.path(), Path::new("cc"));
+}
+
+fn ccache_env_flags() {
+ let test = Test::gnu();
+ test.shim("ccache");
+
+ env::set_var("CC", "ccache lol-this-is-not-a-compiler");
+ let compiler = test.gcc().file("foo.c").get_compiler();
+ assert_eq!(compiler.path(), Path::new("lol-this-is-not-a-compiler"));
+ assert_eq!(
+ compiler.cc_env(),
+ OsString::from("ccache lol-this-is-not-a-compiler")
+ );
+ assert!(
+ compiler
+ .cflags_env()
+ .into_string()
+ .unwrap()
+ .contains("ccache")
+ == false
+ );
+ assert!(
+ compiler
+ .cflags_env()
+ .into_string()
+ .unwrap()
+ .contains(" lol-this-is-not-a-compiler")
+ == false
+ );
+
+ env::set_var("CC", "");
+}
+
+fn leading_spaces() {
+ let test = Test::gnu();
+ test.shim("ccache");
+
+ env::set_var("CC", " test ");
+ let compiler = test.gcc().file("foo.c").get_compiler();
+ assert_eq!(compiler.path(), Path::new("test"));
+
+ env::set_var("CC", "");
+}
+
+fn extra_flags() {
+ let test = Test::gnu();
+ test.shim("ccache");
+
+ env::set_var("CC", "ccache cc -m32");
+ let compiler = test.gcc().file("foo.c").get_compiler();
+ assert_eq!(compiler.path(), Path::new("cc"));
+}
+
+fn path_to_ccache() {
+ let test = Test::gnu();
+ test.shim("ccache");
+
+ env::set_var("CC", "/path/to/ccache.exe cc -m32");
+ let compiler = test.gcc().file("foo.c").get_compiler();
+ assert_eq!(compiler.path(), Path::new("cc"));
+ assert_eq!(
+ compiler.cc_env(),
+ OsString::from("/path/to/ccache.exe cc -m32"),
+ );
+}
+
+fn more_spaces() {
+ let test = Test::gnu();
+ test.shim("ccache");
+
+ env::set_var("CC", "cc -m32");
+ let compiler = test.gcc().file("foo.c").get_compiler();
+ assert_eq!(compiler.path(), Path::new("cc"));
+}
diff --git a/vendor/cc/tests/cflags.rs b/vendor/cc/tests/cflags.rs
new file mode 100644
index 0000000..caec6ea
--- /dev/null
+++ b/vendor/cc/tests/cflags.rs
@@ -0,0 +1,15 @@
+mod support;
+
+use crate::support::Test;
+use std::env;
+
+/// This test is in its own module because it modifies the environment and would affect other tests
+/// when run in parallel with them.
+#[test]
+fn gnu_no_warnings_if_cflags() {
+ env::set_var("CFLAGS", "-arbitrary");
+ let test = Test::gnu();
+ test.gcc().file("foo.c").compile("foo");
+
+ test.cmd(0).must_not_have("-Wall").must_not_have("-Wextra");
+}
diff --git a/vendor/cc/tests/cxxflags.rs b/vendor/cc/tests/cxxflags.rs
new file mode 100644
index 0000000..c524c7d
--- /dev/null
+++ b/vendor/cc/tests/cxxflags.rs
@@ -0,0 +1,15 @@
+mod support;
+
+use crate::support::Test;
+use std::env;
+
+/// This test is in its own module because it modifies the environment and would affect other tests
+/// when run in parallel with them.
+#[test]
+fn gnu_no_warnings_if_cxxflags() {
+ env::set_var("CXXFLAGS", "-arbitrary");
+ let test = Test::gnu();
+ test.gcc().file("foo.cpp").cpp(true).compile("foo");
+
+ test.cmd(0).must_not_have("-Wall").must_not_have("-Wextra");
+}
diff --git a/vendor/cc/tests/support/mod.rs b/vendor/cc/tests/support/mod.rs
new file mode 100644
index 0000000..f3c0440
--- /dev/null
+++ b/vendor/cc/tests/support/mod.rs
@@ -0,0 +1,172 @@
+#![allow(dead_code)]
+
+use std::env;
+use std::ffi::{OsStr, OsString};
+use std::fs::{self, File};
+use std::io;
+use std::io::prelude::*;
+use std::path::{Path, PathBuf};
+
+use cc;
+use tempfile::{Builder, TempDir};
+
+pub struct Test {
+ pub td: TempDir,
+ pub gcc: PathBuf,
+ pub msvc: bool,
+}
+
+pub struct Execution {
+ args: Vec<String>,
+}
+
+impl Test {
+ pub fn new() -> Test {
+ // This is ugly: `sccache` needs to introspect the compiler it is
+ // executing, as it adjusts its behavior depending on the
+ // language/compiler. This crate's test driver uses mock compilers that
+ // are obviously not supported by sccache, so the tests fail if
+ // RUSTC_WRAPPER is set. rust doesn't build test dependencies with
+ // the `test` feature enabled, so we can't conditionally disable the
+ // usage of `sccache` if running in a test environment, at least not
+ // without setting an environment variable here and testing for it
+ // there. Explicitly deasserting RUSTC_WRAPPER here seems to be the
+ // lesser of the two evils.
+ env::remove_var("RUSTC_WRAPPER");
+
+ let mut gcc = PathBuf::from(env::current_exe().unwrap());
+ gcc.pop();
+ if gcc.ends_with("deps") {
+ gcc.pop();
+ }
+ let td = Builder::new().prefix("gcc-test").tempdir_in(&gcc).unwrap();
+ gcc.push(format!("gcc-shim{}", env::consts::EXE_SUFFIX));
+ Test {
+ td: td,
+ gcc: gcc,
+ msvc: false,
+ }
+ }
+
+ pub fn gnu() -> Test {
+ let t = Test::new();
+ t.shim("cc").shim("c++").shim("ar");
+ t
+ }
+
+ pub fn msvc() -> Test {
+ let mut t = Test::new();
+ t.shim("cl").shim("lib.exe");
+ t.msvc = true;
+ t
+ }
+
+ pub fn shim(&self, name: &str) -> &Test {
+ let name = if name.ends_with(env::consts::EXE_SUFFIX) {
+ name.to_string()
+ } else {
+ format!("{}{}", name, env::consts::EXE_SUFFIX)
+ };
+ link_or_copy(&self.gcc, self.td.path().join(name)).unwrap();
+ self
+ }
+
+ pub fn gcc(&self) -> cc::Build {
+ let mut cfg = cc::Build::new();
+ let target = if self.msvc {
+ "x86_64-pc-windows-msvc"
+ } else {
+ "x86_64-unknown-linux-gnu"
+ };
+
+ cfg.target(target)
+ .host(target)
+ .opt_level(2)
+ .debug(false)
+ .out_dir(self.td.path())
+ .__set_env("PATH", self.path())
+ .__set_env("GCCTEST_OUT_DIR", self.td.path());
+ if self.msvc {
+ cfg.compiler(self.td.path().join("cl"));
+ cfg.archiver(self.td.path().join("lib.exe"));
+ }
+ cfg
+ }
+
+ fn path(&self) -> OsString {
+ let mut path = env::split_paths(&env::var_os("PATH").unwrap()).collect::<Vec<_>>();
+ path.insert(0, self.td.path().to_owned());
+ env::join_paths(path).unwrap()
+ }
+
+ pub fn cmd(&self, i: u32) -> Execution {
+ let mut s = String::new();
+ File::open(self.td.path().join(format!("out{}", i)))
+ .unwrap()
+ .read_to_string(&mut s)
+ .unwrap();
+ Execution {
+ args: s.lines().map(|s| s.to_string()).collect(),
+ }
+ }
+}
+
+impl Execution {
+ pub fn must_have<P: AsRef<OsStr>>(&self, p: P) -> &Execution {
+ if !self.has(p.as_ref()) {
+ panic!("didn't find {:?} in {:?}", p.as_ref(), self.args);
+ } else {
+ self
+ }
+ }
+
+ pub fn must_not_have<P: AsRef<OsStr>>(&self, p: P) -> &Execution {
+ if self.has(p.as_ref()) {
+ panic!("found {:?}", p.as_ref());
+ } else {
+ self
+ }
+ }
+
+ pub fn has(&self, p: &OsStr) -> bool {
+ self.args.iter().any(|arg| OsStr::new(arg) == p)
+ }
+
+ pub fn must_have_in_order(&self, before: &str, after: &str) -> &Execution {
+ let before_position = self
+ .args
+ .iter()
+ .rposition(|x| OsStr::new(x) == OsStr::new(before));
+ let after_position = self
+ .args
+ .iter()
+ .rposition(|x| OsStr::new(x) == OsStr::new(after));
+ match (before_position, after_position) {
+ (Some(b), Some(a)) if b < a => {}
+ (b, a) => panic!(
+ "{:?} (last position: {:?}) did not appear before {:?} (last position: {:?})",
+ before, b, after, a
+ ),
+ };
+ self
+ }
+}
+
+/// Hard link an executable or copy it if that fails.
+///
+/// We first try to hard link an executable to save space. If that fails (as on Windows with
+/// different mount points, issue #60), we copy.
+#[cfg(not(target_os = "macos"))]
+fn link_or_copy<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> io::Result<()> {
+ let from = from.as_ref();
+ let to = to.as_ref();
+ fs::hard_link(from, to).or_else(|_| fs::copy(from, to).map(|_| ()))
+}
+
+/// Copy an executable.
+///
+/// On macOS, hard linking the executable leads to strange failures (issue #419), so we just copy.
+#[cfg(target_os = "macos")]
+fn link_or_copy<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> io::Result<()> {
+ fs::copy(from, to).map(|_| ())
+}
diff --git a/vendor/cc/tests/test.rs b/vendor/cc/tests/test.rs
new file mode 100644
index 0000000..7f1ddb2
--- /dev/null
+++ b/vendor/cc/tests/test.rs
@@ -0,0 +1,477 @@
+use crate::support::Test;
+
+mod support;
+
+// Some tests check that a flag is *not* present. These tests might fail if the flag is set in the
+// CFLAGS or CXXFLAGS environment variables. This function clears the CFLAGS and CXXFLAGS
+// variables to make sure that the tests can run correctly.
+fn reset_env() {
+ std::env::set_var("CFLAGS", "");
+ std::env::set_var("CXXFLAGS", "");
+}
+
+#[test]
+fn gnu_smoke() {
+ reset_env();
+
+ let test = Test::gnu();
+ test.gcc().file("foo.c").compile("foo");
+
+ test.cmd(0)
+ .must_have("-O2")
+ .must_have("foo.c")
+ .must_not_have("-gdwarf-4")
+ .must_have("-c")
+ .must_have("-ffunction-sections")
+ .must_have("-fdata-sections");
+ test.cmd(1).must_have(test.td.path().join("foo.o"));
+}
+
+#[test]
+fn gnu_opt_level_1() {
+ reset_env();
+
+ let test = Test::gnu();
+ test.gcc().opt_level(1).file("foo.c").compile("foo");
+
+ test.cmd(0).must_have("-O1").must_not_have("-O2");
+}
+
+#[test]
+fn gnu_opt_level_s() {
+ reset_env();
+
+ let test = Test::gnu();
+ test.gcc().opt_level_str("s").file("foo.c").compile("foo");
+
+ test.cmd(0)
+ .must_have("-Os")
+ .must_not_have("-O1")
+ .must_not_have("-O2")
+ .must_not_have("-O3")
+ .must_not_have("-Oz");
+}
+
+#[test]
+fn gnu_debug() {
+ let test = Test::gnu();
+ test.gcc().debug(true).file("foo.c").compile("foo");
+ test.cmd(0).must_have("-gdwarf-4");
+
+ let test = Test::gnu();
+ test.gcc()
+ .target("x86_64-apple-darwin")
+ .debug(true)
+ .file("foo.c")
+ .compile("foo");
+ test.cmd(0).must_have("-gdwarf-2");
+}
+
+#[test]
+fn gnu_debug_fp_auto() {
+ let test = Test::gnu();
+ test.gcc().debug(true).file("foo.c").compile("foo");
+ test.cmd(0).must_have("-gdwarf-4");
+ test.cmd(0).must_have("-fno-omit-frame-pointer");
+}
+
+#[test]
+fn gnu_debug_fp() {
+ let test = Test::gnu();
+ test.gcc().debug(true).file("foo.c").compile("foo");
+ test.cmd(0).must_have("-gdwarf-4");
+ test.cmd(0).must_have("-fno-omit-frame-pointer");
+}
+
+#[test]
+fn gnu_debug_nofp() {
+ reset_env();
+
+ let test = Test::gnu();
+ test.gcc()
+ .debug(true)
+ .force_frame_pointer(false)
+ .file("foo.c")
+ .compile("foo");
+ test.cmd(0).must_have("-gdwarf-4");
+ test.cmd(0).must_not_have("-fno-omit-frame-pointer");
+
+ let test = Test::gnu();
+ test.gcc()
+ .force_frame_pointer(false)
+ .debug(true)
+ .file("foo.c")
+ .compile("foo");
+ test.cmd(0).must_have("-gdwarf-4");
+ test.cmd(0).must_not_have("-fno-omit-frame-pointer");
+}
+
+#[test]
+fn gnu_warnings_into_errors() {
+ let test = Test::gnu();
+ test.gcc()
+ .warnings_into_errors(true)
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_have("-Werror");
+}
+
+#[test]
+fn gnu_warnings() {
+ let test = Test::gnu();
+ test.gcc()
+ .warnings(true)
+ .flag("-Wno-missing-field-initializers")
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_have("-Wall").must_have("-Wextra");
+}
+
+#[test]
+fn gnu_extra_warnings0() {
+ reset_env();
+
+ let test = Test::gnu();
+ test.gcc()
+ .warnings(true)
+ .extra_warnings(false)
+ .flag("-Wno-missing-field-initializers")
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_have("-Wall").must_not_have("-Wextra");
+}
+
+#[test]
+fn gnu_extra_warnings1() {
+ reset_env();
+
+ let test = Test::gnu();
+ test.gcc()
+ .warnings(false)
+ .extra_warnings(true)
+ .flag("-Wno-missing-field-initializers")
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_not_have("-Wall").must_have("-Wextra");
+}
+
+#[test]
+fn gnu_warnings_overridable() {
+ reset_env();
+
+ let test = Test::gnu();
+ test.gcc()
+ .warnings(true)
+ .flag("-Wno-missing-field-initializers")
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0)
+ .must_have_in_order("-Wall", "-Wno-missing-field-initializers");
+}
+
+#[test]
+fn gnu_x86_64() {
+ for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+ let target = format!("x86_64-{}", vendor);
+ let test = Test::gnu();
+ test.gcc()
+ .target(&target)
+ .host(&target)
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_have("-fPIC").must_have("-m64");
+ }
+}
+
+#[test]
+fn gnu_x86_64_no_pic() {
+ reset_env();
+
+ for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+ let target = format!("x86_64-{}", vendor);
+ let test = Test::gnu();
+ test.gcc()
+ .pic(false)
+ .target(&target)
+ .host(&target)
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_not_have("-fPIC");
+ }
+}
+
+#[test]
+fn gnu_i686() {
+ for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+ let target = format!("i686-{}", vendor);
+ let test = Test::gnu();
+ test.gcc()
+ .target(&target)
+ .host(&target)
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_have("-m32");
+ }
+}
+
+#[test]
+fn gnu_i686_pic() {
+ for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+ let target = format!("i686-{}", vendor);
+ let test = Test::gnu();
+ test.gcc()
+ .pic(true)
+ .target(&target)
+ .host(&target)
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_have("-fPIC");
+ }
+}
+
+#[test]
+fn gnu_x86_64_no_plt() {
+ let target = "x86_64-unknown-linux-gnu";
+ let test = Test::gnu();
+ test.gcc()
+ .pic(true)
+ .use_plt(false)
+ .target(&target)
+ .host(&target)
+ .file("foo.c")
+ .compile("foo");
+ test.cmd(0).must_have("-fno-plt");
+}
+
+#[test]
+fn gnu_set_stdlib() {
+ reset_env();
+
+ let test = Test::gnu();
+ test.gcc()
+ .cpp_set_stdlib(Some("foo"))
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_not_have("-stdlib=foo");
+}
+
+#[test]
+fn gnu_include() {
+ let test = Test::gnu();
+ test.gcc().include("foo/bar").file("foo.c").compile("foo");
+
+ test.cmd(0).must_have("-I").must_have("foo/bar");
+}
+
+#[test]
+fn gnu_define() {
+ let test = Test::gnu();
+ test.gcc()
+ .define("FOO", "bar")
+ .define("BAR", None)
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_have("-DFOO=bar").must_have("-DBAR");
+}
+
+#[test]
+fn gnu_compile_assembly() {
+ let test = Test::gnu();
+ test.gcc().file("foo.S").compile("foo");
+ test.cmd(0).must_have("foo.S");
+}
+
+#[test]
+fn gnu_shared() {
+ reset_env();
+
+ let test = Test::gnu();
+ test.gcc()
+ .file("foo.c")
+ .shared_flag(true)
+ .static_flag(false)
+ .compile("foo");
+
+ test.cmd(0).must_have("-shared").must_not_have("-static");
+}
+
+#[test]
+fn gnu_flag_if_supported() {
+ reset_env();
+
+ if cfg!(windows) {
+ return;
+ }
+ let test = Test::gnu();
+ test.gcc()
+ .file("foo.c")
+ .flag("-v")
+ .flag_if_supported("-Wall")
+ .flag_if_supported("-Wflag-does-not-exist")
+ .flag_if_supported("-std=c++11")
+ .compile("foo");
+
+ test.cmd(0)
+ .must_have("-v")
+ .must_have("-Wall")
+ .must_not_have("-Wflag-does-not-exist")
+ .must_not_have("-std=c++11");
+}
+
+#[test]
+fn gnu_flag_if_supported_cpp() {
+ if cfg!(windows) {
+ return;
+ }
+ let test = Test::gnu();
+ test.gcc()
+ .cpp(true)
+ .file("foo.cpp")
+ .flag_if_supported("-std=c++11")
+ .compile("foo");
+
+ test.cmd(0).must_have("-std=c++11");
+}
+
+#[test]
+fn gnu_static() {
+ reset_env();
+
+ let test = Test::gnu();
+ test.gcc()
+ .file("foo.c")
+ .shared_flag(false)
+ .static_flag(true)
+ .compile("foo");
+
+ test.cmd(0).must_have("-static").must_not_have("-shared");
+}
+
+#[test]
+fn gnu_no_dash_dash() {
+ let test = Test::gnu();
+ test.gcc().file("foo.c").compile("foo");
+
+ test.cmd(0).must_not_have("--");
+}
+
+#[test]
+fn gnu_std_c() {
+ let test = Test::gnu();
+ test.gcc().file("foo.c").std("c11").compile("foo");
+
+ test.cmd(0).must_have("-std=c11");
+}
+
+#[test]
+fn msvc_smoke() {
+ reset_env();
+
+ let test = Test::msvc();
+ test.gcc().file("foo.c").compile("foo");
+
+ test.cmd(0)
+ .must_have("-O2")
+ .must_have("foo.c")
+ .must_not_have("-Z7")
+ .must_have("-c")
+ .must_have("-MD");
+ test.cmd(1).must_have(test.td.path().join("foo.o"));
+}
+
+#[test]
+fn msvc_opt_level_0() {
+ reset_env();
+
+ let test = Test::msvc();
+ test.gcc().opt_level(0).file("foo.c").compile("foo");
+
+ test.cmd(0).must_not_have("-O2");
+}
+
+#[test]
+fn msvc_debug() {
+ let test = Test::msvc();
+ test.gcc().debug(true).file("foo.c").compile("foo");
+ test.cmd(0).must_have("-Z7");
+}
+
+#[test]
+fn msvc_include() {
+ let test = Test::msvc();
+ test.gcc().include("foo/bar").file("foo.c").compile("foo");
+
+ test.cmd(0).must_have("-I").must_have("foo/bar");
+}
+
+#[test]
+fn msvc_define() {
+ let test = Test::msvc();
+ test.gcc()
+ .define("FOO", "bar")
+ .define("BAR", None)
+ .file("foo.c")
+ .compile("foo");
+
+ test.cmd(0).must_have("-DFOO=bar").must_have("-DBAR");
+}
+
+#[test]
+fn msvc_static_crt() {
+ let test = Test::msvc();
+ test.gcc().static_crt(true).file("foo.c").compile("foo");
+
+ test.cmd(0).must_have("-MT");
+}
+
+#[test]
+fn msvc_no_static_crt() {
+ let test = Test::msvc();
+ test.gcc().static_crt(false).file("foo.c").compile("foo");
+
+ test.cmd(0).must_have("-MD");
+}
+
+#[test]
+fn msvc_no_dash_dash() {
+ let test = Test::msvc();
+ test.gcc().file("foo.c").compile("foo");
+
+ test.cmd(0).must_not_have("--");
+}
+
+#[test]
+fn msvc_std_c() {
+ let test = Test::msvc();
+ test.gcc().file("foo.c").std("c11").compile("foo");
+
+ test.cmd(0).must_have("-std:c11");
+}
+
+// Disable this test with the parallel feature because the execution
+// order is not deterministic.
+#[cfg(not(feature = "parallel"))]
+#[test]
+fn asm_flags() {
+ let test = Test::gnu();
+ test.gcc()
+ .file("foo.c")
+ .file("x86_64.asm")
+ .file("x86_64.S")
+ .asm_flag("--abc")
+ .compile("foo");
+ test.cmd(0).must_not_have("--abc");
+ test.cmd(1).must_have("--abc");
+ test.cmd(2).must_have("--abc");
+}
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