66 lines
2.6 KiB
Nix
66 lines
2.6 KiB
Nix
{ lib }:
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rec {
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# https://doc.rust-lang.org/reference/conditional-compilation.html#target_arch
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toTargetArch = platform:
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/**/ if platform ? rustc.platform then platform.rustc.platform.arch
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else if platform.isAarch32 then "arm"
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else if platform.isMips64 then "mips64" # never add "el" suffix
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else if platform.isPower64 then "powerpc64" # never add "le" suffix
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else platform.parsed.cpu.name;
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# https://doc.rust-lang.org/reference/conditional-compilation.html#target_os
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toTargetOs = platform:
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/**/ if platform ? rustc.platform then platform.rustc.platform.os or "none"
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else if platform.isDarwin then "macos"
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else platform.parsed.kernel.name;
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# https://doc.rust-lang.org/reference/conditional-compilation.html#target_family
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toTargetFamily = platform:
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if platform ? rustc.platform.target-family
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then
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(
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# Since https://github.com/rust-lang/rust/pull/84072
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# `target-family` is a list instead of single value.
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let
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f = platform.rustc.platform.target-family;
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in
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if builtins.isList f then f else [ f ]
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)
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else lib.optional platform.isUnix "unix"
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++ lib.optional platform.isWindows "windows";
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# https://doc.rust-lang.org/reference/conditional-compilation.html#target_vendor
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toTargetVendor = platform: let
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inherit (platform.parsed) vendor;
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in platform.rustc.platform.vendor or {
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"w64" = "pc";
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}.${vendor.name} or vendor.name;
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# Returns the name of the rust target, even if it is custom. Adjustments are
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# because rust has slightly different naming conventions than we do.
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toRustTarget = platform: let
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inherit (platform.parsed) cpu kernel abi;
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cpu_ = platform.rustc.platform.arch or {
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"armv7a" = "armv7";
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"armv7l" = "armv7";
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"armv6l" = "arm";
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"armv5tel" = "armv5te";
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"riscv64" = "riscv64gc";
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}.${cpu.name} or cpu.name;
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vendor_ = toTargetVendor platform;
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in platform.rustc.config
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or "${cpu_}-${vendor_}-${kernel.name}${lib.optionalString (abi.name != "unknown") "-${abi.name}"}";
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# Returns the name of the rust target if it is standard, or the json file
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# containing the custom target spec.
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toRustTargetSpec = platform:
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if platform ? rustc.platform
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then builtins.toFile (toRustTarget platform + ".json") (builtins.toJSON platform.rustc.platform)
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else toRustTarget platform;
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# Returns true if the target is no_std
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# https://github.com/rust-lang/rust/blob/2e44c17c12cec45b6a682b1e53a04ac5b5fcc9d2/src/bootstrap/config.rs#L415-L421
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IsNoStdTarget = platform: let rustTarget = toRustTarget platform; in
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builtins.any (t: lib.hasInfix t rustTarget) ["-none" "nvptx" "switch" "-uefi"];
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}
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