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https://github.com/SebastianWendel/nixpkgs.git
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a3a6ad7a01
crossOverlays only apply to the packages being built, not the build packages. It is useful when you don’t care what is used to build your packages, just what is being built. The idea relies heavily on the cross compiling infrastructure. Using this implies that we need to create a cross stdenv.
75 lines
2.5 KiB
Nix
75 lines
2.5 KiB
Nix
{ lib
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, localSystem, crossSystem, config, overlays, crossOverlays ? []
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}:
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let
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bootStages = import ../. {
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inherit lib localSystem overlays;
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crossSystem = localSystem;
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crossOverlays = [];
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# Ignore custom stdenvs when cross compiling for compatability
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config = builtins.removeAttrs config [ "replaceStdenv" ];
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};
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in lib.init bootStages ++ [
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# Regular native packages
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(somePrevStage: lib.last bootStages somePrevStage // {
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# It's OK to change the built-time dependencies
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allowCustomOverrides = true;
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})
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# Build tool Packages
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(vanillaPackages: {
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inherit config overlays;
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selfBuild = false;
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stdenv =
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assert vanillaPackages.stdenv.buildPlatform == localSystem;
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assert vanillaPackages.stdenv.hostPlatform == localSystem;
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assert vanillaPackages.stdenv.targetPlatform == localSystem;
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vanillaPackages.stdenv.override { targetPlatform = crossSystem; };
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# It's OK to change the built-time dependencies
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allowCustomOverrides = true;
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})
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# Run Packages
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(buildPackages: {
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inherit config;
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overlays = overlays ++ crossOverlays;
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selfBuild = false;
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stdenv = buildPackages.stdenv.override (old: rec {
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buildPlatform = localSystem;
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hostPlatform = crossSystem;
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targetPlatform = crossSystem;
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# Prior overrides are surely not valid as packages built with this run on
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# a different platform, and so are disabled.
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overrides = _: _: {};
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extraBuildInputs = [ ]; # Old ones run on wrong platform
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allowedRequisites = null;
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cc = if crossSystem.useiOSPrebuilt or false
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then buildPackages.darwin.iosSdkPkgs.clang
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else if crossSystem.useAndroidPrebuilt or false
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then buildPackages.androidenv."androidndkPkgs_${crossSystem.ndkVer}".gcc
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else buildPackages.gcc;
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extraNativeBuildInputs = old.extraNativeBuildInputs
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++ lib.optionals
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(hostPlatform.isLinux && !buildPlatform.isLinux)
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[ buildPackages.patchelf buildPackages.paxctl ]
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++ lib.optional hostPlatform.isDarwin buildPackages.clang
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++ lib.optional
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(let f = p: !p.isx86 || p.libc == "musl"; in f hostPlatform && !(f buildPlatform))
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buildPackages.updateAutotoolsGnuConfigScriptsHook
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# without proper `file` command, libtool sometimes fails
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# to recognize 64-bit DLLs
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++ lib.optional (hostPlatform.config == "x86_64-w64-mingw32") buildPackages.file
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;
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});
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})
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]
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