mirror of
https://github.com/NixOS/nixpkgs.git
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5c1955ff14
We have a long-standing goal of nothing with "cross" in its name. This gets us much closer!
74 lines
2.6 KiB
Nix
74 lines
2.6 KiB
Nix
{
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lib,
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stdenv,
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pkgs,
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targetPackages,
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callPackage,
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isl_0_20,
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noSysDirs,
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lowPrio,
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wrapCC,
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}@args:
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let
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versions = import ./versions.nix;
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gccForMajorMinorVersion =
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majorMinorVersion:
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let
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majorVersion = lib.versions.major majorMinorVersion;
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atLeast = lib.versionAtLeast majorMinorVersion;
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attrName = "gcc${lib.replaceStrings [ "." ] [ "" ] majorMinorVersion}";
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pkg = lowPrio (
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wrapCC (
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callPackage ./default.nix {
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inherit noSysDirs;
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inherit majorMinorVersion;
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reproducibleBuild = true;
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profiledCompiler = false;
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libcCross =
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if !lib.systems.equals stdenv.targetPlatform stdenv.buildPlatform then
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targetPackages.libc or pkgs.libc
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else
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null;
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threadsCross =
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if !lib.systems.equals stdenv.targetPlatform stdenv.buildPlatform then
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targetPackages.threads or pkgs.threads
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else
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{ };
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isl = if stdenv.hostPlatform.isDarwin then null else isl_0_20;
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# do not allow version skew when cross-building gcc
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#
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# When `gcc` is cross-built (`build` != `target` && `host` == `target`)
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# `gcc` assumes that it has a compatible cross-compiler in the environment
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# that can build target libraries. Version of a cross-compiler has to
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# match the compiler being cross-built as libraries frequently use fresh
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# compiler features, like `-std=c++26` or target-specific types like
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# `_Bfloat16`.
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# Version mismatch causes build failures like:
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# https://github.com/NixOS/nixpkgs/issues/351905
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#
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# Similar problems (but on a smaller scale) happen when a `gcc`
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# cross-compiler is built (`build` == `host` && `host` != `target`) built
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# by a mismatching version of a native compiler (`build` == `host` &&
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# `host` == `target`).
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#
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# Let's fix both problems by requiring the same compiler version for
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# cross-case.
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stdenv =
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if
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(
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(!lib.systems.equals stdenv.targetPlatform stdenv.buildPlatform)
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|| (!lib.systems.equals stdenv.hostPlatform stdenv.targetPlatform)
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)
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&& stdenv.cc.isGNU
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then
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pkgs."gcc${majorVersion}Stdenv"
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else
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stdenv;
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}
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)
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);
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in
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lib.nameValuePair attrName pkg;
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in
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lib.listToAttrs (map gccForMajorMinorVersion versions.allMajorVersions)
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