| use std::env; |
| |
| fn main() { |
| println!("cargo:rerun-if-changed=build.rs"); |
| let target = env::var("TARGET").expect("TARGET was not set"); |
| if target.contains("freebsd") { |
| if env::var("RUST_STD_FREEBSD_12_ABI").is_ok() { |
| println!("cargo:rustc-cfg=freebsd12"); |
| } |
| } else if target.contains("linux") |
| || target.contains("netbsd") |
| || target.contains("dragonfly") |
| || target.contains("openbsd") |
| || target.contains("solaris") |
| || target.contains("illumos") |
| || target.contains("apple-darwin") |
| || target.contains("apple-ios") |
| || target.contains("apple-watchos") |
| || target.contains("uwp") |
| || target.contains("windows") |
| || target.contains("fuchsia") |
| || (target.contains("sgx") && target.contains("fortanix")) |
| || target.contains("hermit") |
| || target.contains("l4re") |
| || target.contains("redox") |
| || target.contains("haiku") |
| || target.contains("vxworks") |
| || target.contains("wasm32") |
| || target.contains("wasm64") |
| || target.contains("asmjs") |
| || target.contains("espidf") |
| || target.contains("solid") |
| || target.contains("nintendo-3ds") |
| { |
| // These platforms don't have any special requirements. |
| } else { |
| // This is for Cargo's build-std support, to mark std as unstable for |
| // typically no_std platforms. |
| // This covers: |
| // - os=none ("bare metal" targets) |
| // - mipsel-sony-psp |
| // - nvptx64-nvidia-cuda |
| // - arch=avr |
| // - tvos (aarch64-apple-tvos, x86_64-apple-tvos) |
| // - uefi (x86_64-unknown-uefi, i686-unknown-uefi) |
| // - JSON targets |
| // - Any new targets that have not been explicitly added above. |
| println!("cargo:rustc-cfg=feature=\"restricted-std\""); |
| } |
| println!("cargo:rustc-env=STD_ENV_ARCH={}", env::var("CARGO_CFG_TARGET_ARCH").unwrap()); |
| println!("cargo:rustc-cfg=backtrace_in_libstd"); |
| } |
