forked from mirrors/nixpkgs
b86e62d30d
You can build (partially) with LLVM toolchain using the useLLVM flag.
This works like so:
nix-build -A hello --arg crossSystem '{ system =
"aarch64-unknown-linux-musl"; useLLVM = true }'
also don’t separate debug info in lldClang
It doesn’t work currently with that setup hook. Missing build-id?
76 lines
2.5 KiB
Nix
76 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."androidndkPkgs_${crossSystem.ndkVer}".gcc
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else if crossSystem.useLLVM or false
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then buildPackages.llvmPackages_7.lldClang
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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 ]
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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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