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-rw-r--r--vendor/libc/build.rs297
1 files changed, 0 insertions, 297 deletions
diff --git a/vendor/libc/build.rs b/vendor/libc/build.rs
deleted file mode 100644
index ec93200..0000000
--- a/vendor/libc/build.rs
+++ /dev/null
@@ -1,297 +0,0 @@
-use std::env;
-use std::process::Command;
-use std::str;
-use std::string::String;
-
-// List of cfgs this build script is allowed to set. The list is needed to support check-cfg, as we
-// need to know all the possible cfgs that this script will set. If you need to set another cfg
-// make sure to add it to this list as well.
-const ALLOWED_CFGS: &'static [&'static str] = &[
- "emscripten_new_stat_abi",
- "freebsd10",
- "freebsd11",
- "freebsd12",
- "freebsd13",
- "freebsd14",
- "freebsd15",
- "libc_align",
- "libc_cfg_target_vendor",
- "libc_const_extern_fn",
- "libc_const_extern_fn_unstable",
- "libc_const_size_of",
- "libc_core_cvoid",
- "libc_deny_warnings",
- "libc_int128",
- "libc_long_array",
- "libc_non_exhaustive",
- "libc_packedN",
- "libc_priv_mod_use",
- "libc_ptr_addr_of",
- "libc_thread_local",
- "libc_underscore_const_names",
- "libc_union",
-];
-
-// Extra values to allow for check-cfg.
-const CHECK_CFG_EXTRA: &'static [(&'static str, &'static [&'static str])] = &[
- ("target_os", &["switch", "aix", "ohos", "hurd"]),
- ("target_env", &["illumos", "wasi", "aix", "ohos"]),
- (
- "target_arch",
- &["loongarch64", "mips32r6", "mips64r6", "csky"],
- ),
-];
-
-fn main() {
- // Avoid unnecessary re-building.
- println!("cargo:rerun-if-changed=build.rs");
-
- let (rustc_minor_ver, is_nightly) = rustc_minor_nightly();
- let rustc_dep_of_std = env::var("CARGO_FEATURE_RUSTC_DEP_OF_STD").is_ok();
- let align_cargo_feature = env::var("CARGO_FEATURE_ALIGN").is_ok();
- let const_extern_fn_cargo_feature = env::var("CARGO_FEATURE_CONST_EXTERN_FN").is_ok();
- let libc_ci = env::var("LIBC_CI").is_ok();
- let libc_check_cfg = env::var("LIBC_CHECK_CFG").is_ok();
-
- if env::var("CARGO_FEATURE_USE_STD").is_ok() {
- println!(
- "cargo:warning=\"libc's use_std cargo feature is deprecated since libc 0.2.55; \
- please consider using the `std` cargo feature instead\""
- );
- }
-
- // The ABI of libc used by std is backward compatible with FreeBSD 12.
- // The ABI of libc from crates.io is backward compatible with FreeBSD 11.
- //
- // On CI, we detect the actual FreeBSD version and match its ABI exactly,
- // running tests to ensure that the ABI is correct.
- match which_freebsd() {
- Some(10) if libc_ci => set_cfg("freebsd10"),
- Some(11) if libc_ci => set_cfg("freebsd11"),
- Some(12) if libc_ci || rustc_dep_of_std => set_cfg("freebsd12"),
- Some(13) if libc_ci => set_cfg("freebsd13"),
- Some(14) if libc_ci => set_cfg("freebsd14"),
- Some(15) if libc_ci => set_cfg("freebsd15"),
- Some(_) | None => set_cfg("freebsd11"),
- }
-
- match emcc_version_code() {
- Some(v) if (v >= 30142) => set_cfg("emscripten_new_stat_abi"),
- // Non-Emscripten or version < 3.1.42.
- Some(_) | None => (),
- }
-
- // On CI: deny all warnings
- if libc_ci {
- set_cfg("libc_deny_warnings");
- }
-
- // Rust >= 1.15 supports private module use:
- if rustc_minor_ver >= 15 || rustc_dep_of_std {
- set_cfg("libc_priv_mod_use");
- }
-
- // Rust >= 1.19 supports unions:
- if rustc_minor_ver >= 19 || rustc_dep_of_std {
- set_cfg("libc_union");
- }
-
- // Rust >= 1.24 supports const mem::size_of:
- if rustc_minor_ver >= 24 || rustc_dep_of_std {
- set_cfg("libc_const_size_of");
- }
-
- // Rust >= 1.25 supports repr(align):
- if rustc_minor_ver >= 25 || rustc_dep_of_std || align_cargo_feature {
- set_cfg("libc_align");
- }
-
- // Rust >= 1.26 supports i128 and u128:
- if rustc_minor_ver >= 26 || rustc_dep_of_std {
- set_cfg("libc_int128");
- }
-
- // Rust >= 1.30 supports `core::ffi::c_void`, so libc can just re-export it.
- // Otherwise, it defines an incompatible type to retaining
- // backwards-compatibility.
- if rustc_minor_ver >= 30 || rustc_dep_of_std {
- set_cfg("libc_core_cvoid");
- }
-
- // Rust >= 1.33 supports repr(packed(N)) and cfg(target_vendor).
- if rustc_minor_ver >= 33 || rustc_dep_of_std {
- set_cfg("libc_packedN");
- set_cfg("libc_cfg_target_vendor");
- }
-
- // Rust >= 1.40 supports #[non_exhaustive].
- if rustc_minor_ver >= 40 || rustc_dep_of_std {
- set_cfg("libc_non_exhaustive");
- }
-
- // Rust >= 1.47 supports long array:
- if rustc_minor_ver >= 47 || rustc_dep_of_std {
- set_cfg("libc_long_array");
- }
-
- if rustc_minor_ver >= 51 || rustc_dep_of_std {
- set_cfg("libc_ptr_addr_of");
- }
-
- // Rust >= 1.37.0 allows underscores as anonymous constant names.
- if rustc_minor_ver >= 37 || rustc_dep_of_std {
- set_cfg("libc_underscore_const_names");
- }
-
- // #[thread_local] is currently unstable
- if rustc_dep_of_std {
- set_cfg("libc_thread_local");
- }
-
- // Rust >= 1.62.0 allows to use `const_extern_fn` for "Rust" and "C".
- if rustc_minor_ver >= 62 {
- set_cfg("libc_const_extern_fn");
- } else {
- // Rust < 1.62.0 requires a crate feature and feature gate.
- if const_extern_fn_cargo_feature {
- if !is_nightly || rustc_minor_ver < 40 {
- panic!("const-extern-fn requires a nightly compiler >= 1.40");
- }
- set_cfg("libc_const_extern_fn_unstable");
- set_cfg("libc_const_extern_fn");
- }
- }
-
- // check-cfg is a nightly cargo/rustc feature to warn when unknown cfgs are used across the
- // codebase. libc can configure it if the appropriate environment variable is passed. Since
- // rust-lang/rust enforces it, this is useful when using a custom libc fork there.
- //
- // https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg
- if libc_check_cfg {
- for cfg in ALLOWED_CFGS {
- if rustc_minor_ver >= 75 {
- println!("cargo:rustc-check-cfg=cfg({})", cfg);
- } else {
- println!("cargo:rustc-check-cfg=values({})", cfg);
- }
- }
- for &(name, values) in CHECK_CFG_EXTRA {
- let values = values.join("\",\"");
- if rustc_minor_ver >= 75 {
- println!("cargo:rustc-check-cfg=cfg({},values(\"{}\"))", name, values);
- } else {
- println!("cargo:rustc-check-cfg=values({},\"{}\")", name, values);
- }
- }
- }
-}
-
-fn rustc_minor_nightly() -> (u32, bool) {
- macro_rules! otry {
- ($e:expr) => {
- match $e {
- Some(e) => e,
- None => panic!("Failed to get rustc version"),
- }
- };
- }
-
- let rustc = otry!(env::var_os("RUSTC"));
- let output = Command::new(rustc)
- .arg("--version")
- .output()
- .ok()
- .expect("Failed to get rustc version");
- if !output.status.success() {
- panic!(
- "failed to run rustc: {}",
- String::from_utf8_lossy(output.stderr.as_slice())
- );
- }
-
- let version = otry!(str::from_utf8(&output.stdout).ok());
- let mut pieces = version.split('.');
-
- if pieces.next() != Some("rustc 1") {
- panic!("Failed to get rustc version");
- }
-
- let minor = pieces.next();
-
- // If `rustc` was built from a tarball, its version string
- // will have neither a git hash nor a commit date
- // (e.g. "rustc 1.39.0"). Treat this case as non-nightly,
- // since a nightly build should either come from CI
- // or a git checkout
- let nightly_raw = otry!(pieces.next()).split('-').nth(1);
- let nightly = nightly_raw
- .map(|raw| raw.starts_with("dev") || raw.starts_with("nightly"))
- .unwrap_or(false);
- let minor = otry!(otry!(minor).parse().ok());
-
- (minor, nightly)
-}
-
-fn which_freebsd() -> Option<i32> {
- let output = std::process::Command::new("freebsd-version").output().ok();
- if output.is_none() {
- return None;
- }
- let output = output.unwrap();
- if !output.status.success() {
- return None;
- }
-
- let stdout = String::from_utf8(output.stdout).ok();
- if stdout.is_none() {
- return None;
- }
- let stdout = stdout.unwrap();
-
- match &stdout {
- s if s.starts_with("10") => Some(10),
- s if s.starts_with("11") => Some(11),
- s if s.starts_with("12") => Some(12),
- s if s.starts_with("13") => Some(13),
- s if s.starts_with("14") => Some(14),
- s if s.starts_with("15") => Some(15),
- _ => None,
- }
-}
-
-fn emcc_version_code() -> Option<u64> {
- let output = std::process::Command::new("emcc")
- .arg("-dumpversion")
- .output()
- .ok();
- if output.is_none() {
- return None;
- }
- let output = output.unwrap();
- if !output.status.success() {
- return None;
- }
-
- let stdout = String::from_utf8(output.stdout).ok();
- if stdout.is_none() {
- return None;
- }
- let version = stdout.unwrap();
-
- // Some Emscripten versions come with `-git` attached, so split the
- // version string also on the `-` char.
- let mut pieces = version.trim().split(|c| c == '.' || c == '-');
-
- let major = pieces.next().and_then(|x| x.parse().ok()).unwrap_or(0);
- let minor = pieces.next().and_then(|x| x.parse().ok()).unwrap_or(0);
- let patch = pieces.next().and_then(|x| x.parse().ok()).unwrap_or(0);
-
- Some(major * 10000 + minor * 100 + patch)
-}
-
-fn set_cfg(cfg: &str) {
- if !ALLOWED_CFGS.contains(&cfg) {
- panic!("trying to set cfg {}, but it is not in ALLOWED_CFGS", cfg);
- }
- println!("cargo:rustc-cfg={}", cfg);
-}
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