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Diffstat (limited to 'tvix/eval/src/systems.rs')
| -rw-r--r-- | tvix/eval/src/systems.rs | 351 |
1 files changed, 351 insertions, 0 deletions
diff --git a/tvix/eval/src/systems.rs b/tvix/eval/src/systems.rs new file mode 100644 index 000000000000..16386cb9e0ad --- /dev/null +++ b/tvix/eval/src/systems.rs @@ -0,0 +1,351 @@ +/// true iff the argument is recognized by cppnix as the second +/// coordinate of a "nix double" +fn is_second_coordinate(x: &str) -> bool { + matches!(x, "linux" | "darwin" | "netbsd" | "openbsd" | "freebsd") +} + +/// This function takes an llvm triple (which may have three or four +/// components, separated by dashes) and returns the "best" +/// approximation as a nix double, where "best" is currently defined +/// as "however cppnix handles it". +pub fn llvm_triple_to_nix_double(llvm_triple: &str) -> String { + let parts: Vec<&str> = llvm_triple.split('-').collect(); + let cpu = match parts[0] { + "armv6" => "armv6l", // cppnix appends an "l" to armv6 + "armv7" => "armv7l", // cppnix appends an "l" to armv7 + x => match x.as_bytes() { + [b'i', _, b'8', b'6'] => "i686", // cppnix glob-matches against i*86 + _ => x, + }, + }; + let os = match parts[1..] { + [_vendor, kernel, _environment] if is_second_coordinate(kernel) => kernel, + [_vendor, kernel] if is_second_coordinate(kernel) => kernel, + [kernel, _environment] if is_second_coordinate(kernel) => kernel, + + // Rustc uses wasm32-unknown-unknown, which is rejected by + // config.sub, for wasm-in-the-browser environments. Rustc + // should be using wasm32-unknown-none, which config.sub + // accepts. Hopefully the rustc people will change their + // triple before stabilising this triple. In the meantime, + // we fix it here in order to unbreak tvixbolt. + // + // https://doc.rust-lang.org/beta/nightly-rustc/rustc_target/spec/wasm32_unknown_unknown/index.html + ["unknown", "unknown"] if cpu == "wasm32" => "none", + + _ => panic!("unrecognized triple {llvm_triple}"), + }; + format!("{cpu}-{os}") +} + +#[cfg(test)] +mod tests { + use super::*; + #[test] + fn test_systems() { + assert_eq!( + llvm_triple_to_nix_double("aarch64-unknown-linux-gnu"), + "aarch64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("i686-unknown-linux-gnu"), + "i686-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("x86_64-apple-darwin"), + "x86_64-darwin" + ); + assert_eq!( + llvm_triple_to_nix_double("x86_64-unknown-linux-gnu"), + "x86_64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("aarch64-apple-darwin"), + "aarch64-darwin" + ); + assert_eq!( + llvm_triple_to_nix_double("aarch64-unknown-linux-musl"), + "aarch64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("arm-unknown-linux-gnueabi"), + "arm-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("arm-unknown-linux-gnueabihf"), + "arm-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv7-unknown-linux-gnueabihf"), + "armv7l-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mips-unknown-linux-gnu"), + "mips-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mips64-unknown-linux-gnuabi64"), + "mips64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mips64-unknown-linux-gnuabin32"), + "mips64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mips64el-unknown-linux-gnuabi64"), + "mips64el-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mips64el-unknown-linux-gnuabin32"), + "mips64el-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mipsel-unknown-linux-gnu"), + "mipsel-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("powerpc-unknown-linux-gnu"), + "powerpc-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("powerpc64-unknown-linux-gnu"), + "powerpc64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("powerpc64le-unknown-linux-gnu"), + "powerpc64le-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("s390x-unknown-linux-gnu"), + "s390x-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("x86_64-unknown-linux-musl"), + "x86_64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("x86_64-unknown-netbsd"), + "x86_64-netbsd" + ); + assert_eq!( + llvm_triple_to_nix_double("aarch64-linux-android"), + "aarch64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("arm-linux-androideabi"), + "arm-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("arm-unknown-linux-musleabi"), + "arm-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("arm-unknown-linux-musleabihf"), + "arm-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv5te-unknown-linux-gnueabi"), + "armv5te-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv5te-unknown-linux-musleabi"), + "armv5te-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv7-linux-androideabi"), + "armv7l-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv7-unknown-linux-gnueabi"), + "armv7l-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv7-unknown-linux-musleabi"), + "armv7l-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv7-unknown-linux-musleabihf"), + "armv7l-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("i586-unknown-linux-gnu"), + "i686-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("i586-unknown-linux-musl"), + "i686-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("i686-linux-android"), + "i686-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("i686-unknown-linux-musl"), + "i686-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mips-unknown-linux-musl"), + "mips-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mips64-unknown-linux-muslabi64"), + "mips64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mips64el-unknown-linux-muslabi64"), + "mips64el-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mipsel-unknown-linux-musl"), + "mipsel-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("sparc64-unknown-linux-gnu"), + "sparc64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("thumbv7neon-linux-androideabi"), + "thumbv7neon-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("thumbv7neon-unknown-linux-gnueabihf"), + "thumbv7neon-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("x86_64-linux-android"), + "x86_64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("x86_64-unknown-linux-gnux32"), + "x86_64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("aarch64-unknown-linux-gnu_ilp32"), + "aarch64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("aarch64-unknown-netbsd"), + "aarch64-netbsd" + ); + assert_eq!( + llvm_triple_to_nix_double("aarch64_be-unknown-linux-gnu_ilp32"), + "aarch64_be-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("aarch64_be-unknown-linux-gnu"), + "aarch64_be-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armeb-unknown-linux-gnueabi"), + "armeb-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv4t-unknown-linux-gnueabi"), + "armv4t-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv6-unknown-netbsd-eabihf"), + "armv6l-netbsd" + ); + assert_eq!( + llvm_triple_to_nix_double("armv7-unknown-linux-uclibceabi"), + "armv7l-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv7-unknown-linux-uclibceabihf"), + "armv7l-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("armv7-unknown-netbsd-eabihf"), + "armv7l-netbsd" + ); + assert_eq!( + llvm_triple_to_nix_double("hexagon-unknown-linux-musl"), + "hexagon-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("i686-unknown-netbsd"), + "i686-netbsd" + ); + assert_eq!( + llvm_triple_to_nix_double("m68k-unknown-linux-gnu"), + "m68k-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mips-unknown-linux-uclibc"), + "mips-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mips64-openwrt-linux-musl"), + "mips64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mipsel-unknown-linux-uclibc"), + "mipsel-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mipsisa32r6-unknown-linux-gnu"), + "mipsisa32r6-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mipsisa32r6el-unknown-linux-gnu"), + "mipsisa32r6el-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mipsisa64r6-unknown-linux-gnuabi64"), + "mipsisa64r6-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("mipsisa64r6el-unknown-linux-gnuabi64"), + "mipsisa64r6el-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("powerpc-unknown-linux-gnuspe"), + "powerpc-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("powerpc-unknown-linux-musl"), + "powerpc-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("powerpc-unknown-netbsd"), + "powerpc-netbsd" + ); + assert_eq!( + llvm_triple_to_nix_double("powerpc64-unknown-linux-musl"), + "powerpc64-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("powerpc64le-unknown-linux-musl"), + "powerpc64le-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("riscv32gc-unknown-linux-gnu"), + "riscv32gc-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("riscv32gc-unknown-linux-musl"), + "riscv32gc-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("riscv64gc-unknown-linux-musl"), + "riscv64gc-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("s390x-unknown-linux-musl"), + "s390x-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("sparc-unknown-linux-gnu"), + "sparc-linux" + ); + assert_eq!( + llvm_triple_to_nix_double("sparc64-unknown-netbsd"), + "sparc64-netbsd" + ); + assert_eq!( + llvm_triple_to_nix_double("thumbv7neon-unknown-linux-musleabihf"), + "thumbv7neon-linux" + ); + } +} |