aboutsummaryrefslogtreecommitdiff
path: root/vendor/thiserror/build.rs
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/thiserror/build.rs')
-rw-r--r--vendor/thiserror/build.rs119
1 files changed, 0 insertions, 119 deletions
diff --git a/vendor/thiserror/build.rs b/vendor/thiserror/build.rs
deleted file mode 100644
index 0b995d8..0000000
--- a/vendor/thiserror/build.rs
+++ /dev/null
@@ -1,119 +0,0 @@
-use std::env;
-use std::ffi::OsString;
-use std::path::Path;
-use std::process::{self, Command, Stdio};
-
-fn main() {
- println!("cargo:rerun-if-changed=build/probe.rs");
-
- let error_generic_member_access;
- let consider_rustc_bootstrap;
- if compile_probe(false) {
- // This is a nightly or dev compiler, so it supports unstable features
- // regardless of RUSTC_BOOTSTRAP. No need to rerun build script if
- // RUSTC_BOOTSTRAP is changed.
- error_generic_member_access = true;
- consider_rustc_bootstrap = false;
- } else if let Some(rustc_bootstrap) = env::var_os("RUSTC_BOOTSTRAP") {
- if compile_probe(true) {
- // This is a stable or beta compiler for which the user has set
- // RUSTC_BOOTSTRAP to turn on unstable features. Rerun build script
- // if they change it.
- error_generic_member_access = true;
- consider_rustc_bootstrap = true;
- } else if rustc_bootstrap == "1" {
- // This compiler does not support the generic member access API in
- // the form that thiserror expects. No need to pay attention to
- // RUSTC_BOOTSTRAP.
- error_generic_member_access = false;
- consider_rustc_bootstrap = false;
- } else {
- // This is a stable or beta compiler for which RUSTC_BOOTSTRAP is
- // set to restrict the use of unstable features by this crate.
- error_generic_member_access = false;
- consider_rustc_bootstrap = true;
- }
- } else {
- // Without RUSTC_BOOTSTRAP, this compiler does not support the generic
- // member access API in the form that thiserror expects, but try again
- // if the user turns on unstable features.
- error_generic_member_access = false;
- consider_rustc_bootstrap = true;
- }
-
- if error_generic_member_access {
- println!("cargo:rustc-cfg=error_generic_member_access");
- }
-
- if consider_rustc_bootstrap {
- println!("cargo:rerun-if-env-changed=RUSTC_BOOTSTRAP");
- }
-}
-
-fn compile_probe(rustc_bootstrap: bool) -> bool {
- if env::var_os("RUSTC_STAGE").is_some() {
- // We are running inside rustc bootstrap. This is a highly non-standard
- // environment with issues such as:
- //
- // https://github.com/rust-lang/cargo/issues/11138
- // https://github.com/rust-lang/rust/issues/114839
- //
- // Let's just not use nightly features here.
- return false;
- }
-
- let rustc = cargo_env_var("RUSTC");
- let out_dir = cargo_env_var("OUT_DIR");
- let probefile = Path::new("build").join("probe.rs");
-
- // Make sure to pick up Cargo rustc configuration.
- let mut cmd = if let Some(wrapper) = env::var_os("RUSTC_WRAPPER") {
- let mut cmd = Command::new(wrapper);
- // The wrapper's first argument is supposed to be the path to rustc.
- cmd.arg(rustc);
- cmd
- } else {
- Command::new(rustc)
- };
-
- if !rustc_bootstrap {
- cmd.env_remove("RUSTC_BOOTSTRAP");
- }
-
- cmd.stderr(Stdio::null())
- .arg("--edition=2018")
- .arg("--crate-name=thiserror")
- .arg("--crate-type=lib")
- .arg("--emit=dep-info,metadata")
- .arg("--out-dir")
- .arg(out_dir)
- .arg(probefile);
-
- if let Some(target) = env::var_os("TARGET") {
- cmd.arg("--target").arg(target);
- }
-
- // If Cargo wants to set RUSTFLAGS, use that.
- if let Ok(rustflags) = env::var("CARGO_ENCODED_RUSTFLAGS") {
- if !rustflags.is_empty() {
- for arg in rustflags.split('\x1f') {
- cmd.arg(arg);
- }
- }
- }
-
- match cmd.status() {
- Ok(status) => status.success(),
- Err(_) => false,
- }
-}
-
-fn cargo_env_var(key: &str) -> OsString {
- env::var_os(key).unwrap_or_else(|| {
- eprintln!(
- "Environment variable ${} is not set during execution of build script",
- key,
- );
- process::exit(1);
- })
-}