87 lines
2.1 KiB
Rust
87 lines
2.1 KiB
Rust
extern crate cc;
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use std::env;
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use std::path::PathBuf;
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fn main() {
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// Set cfg flags depending on release channel
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if NIGHTLY {
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println!("cargo:rustc-cfg=nightly");
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}
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// for the stable build asm lib
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let target: String = env::var("TARGET").unwrap();
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let is_win_gnu = target.ends_with("windows-gnu");
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let is_win_msvc = target.ends_with("windows-msvc");
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let is_win = is_win_gnu || is_win_msvc;
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let arch = match target.split('-').next().unwrap() {
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// "arm" | "armv7" | "armv7s" => "arm",
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"arm64" | "aarch64" => "aarch64",
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// "x86" | "i386" | "i486" | "i586" | "i686" => "i386",
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// "mips" | "mipsel" => "mips32",
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// "powerpc" => "ppc32",
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// "powerpc64" => "ppc64",
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"x86_64" => "x86_64",
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_ => {
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panic!("Unsupported architecture: {target}");
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}
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};
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let abi = match arch {
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"arm" | "aarch64" => "aapcs",
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"mips32" => "o32",
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_ => {
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if is_win {
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"ms"
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} else {
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"sysv"
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}
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}
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};
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let format = if is_win {
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"pe"
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} else if target.contains("apple") {
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"macho"
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} else if target.ends_with("aix") {
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"xcoff"
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} else {
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"elf"
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};
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let (asm, ext) = if is_win_msvc {
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if arch == "arm" {
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("armasm", "asm")
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} else {
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("masm", "asm")
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}
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} else if is_win_gnu {
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("gas", "asm")
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} else {
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("gas", "S")
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};
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let mut path: PathBuf = "src/detail/asm".into();
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let mut config = cc::Build::new();
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if is_win_gnu {
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config.flag("-x").flag("assembler-with-cpp");
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}
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let file_name: [&str; 11] = ["asm", "_", arch, "_", abi, "_", format, "_", asm, ".", ext];
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let file_name = file_name.concat();
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path.push(file_name);
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println!("cargo:rerun-if-changed={}", path.display());
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config.file(path);
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// create the static asm libary
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config.compile("libasm.a");
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}
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#[rustversion::nightly]
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const NIGHTLY: bool = true;
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#[rustversion::not(nightly)]
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const NIGHTLY: bool = false;
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