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?
150 lines
4.7 KiB
Nix
150 lines
4.7 KiB
Nix
{ lowPrio, newScope, pkgs, stdenv, cmake, libstdcxxHook
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, libxml2, python, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
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, buildLlvmTools # tools, but from the previous stage, for cross
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, targetLlvmLibraries # libraries, but from the next stage, for cross
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}:
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let
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release_version = "7.0.1";
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version = release_version; # differentiating these is important for rc's
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fetch = name: sha256: fetchurl {
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url = "https://releases.llvm.org/${release_version}/${name}-${version}.src.tar.xz";
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inherit sha256;
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};
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clang-tools-extra_src = fetch "clang-tools-extra" "1v9vc7id1761qm7mywlknsp810232iwyz8rd4y5km4h7pg9cg4sc";
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tools = stdenv.lib.makeExtensible (tools: let
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callPackage = newScope (tools // { inherit stdenv cmake libxml2 python isl release_version version fetch; });
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mkExtraBuildCommands = cc: ''
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rsrc="$out/resource-root"
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mkdir "$rsrc"
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ln -s "${cc}/lib/clang/${release_version}/include" "$rsrc"
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ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
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echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
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'' + stdenv.lib.optionalString (stdenv.targetPlatform.isLinux && tools.clang-unwrapped ? gcc) ''
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echo "--gcc-toolchain=${tools.clang-unwrapped.gcc}" >> $out/nix-support/cc-cflags
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'';
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in {
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llvm = callPackage ./llvm.nix { };
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llvm-polly = callPackage ./llvm.nix { enablePolly = true; };
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clang-unwrapped = callPackage ./clang {
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inherit clang-tools-extra_src;
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};
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clang-polly-unwrapped = callPackage ./clang {
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inherit clang-tools-extra_src;
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llvm = tools.llvm-polly;
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enablePolly = true;
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};
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llvm-manpages = lowPrio (tools.llvm.override {
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enableManpages = true;
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python = pkgs.python; # don't use python-boot
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});
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clang-manpages = lowPrio (tools.clang-unwrapped.override {
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enableManpages = true;
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python = pkgs.python; # don't use python-boot
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});
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libclang = tools.clang-unwrapped.lib;
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clang = if stdenv.cc.isGNU then tools.libstdcxxClang else tools.libcxxClang;
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libstdcxxClang = wrapCCWith rec {
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cc = tools.clang-unwrapped;
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extraPackages = [
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libstdcxxHook
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targetLlvmLibraries.compiler-rt
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];
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extraBuildCommands = mkExtraBuildCommands cc;
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};
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libcxxClang = wrapCCWith rec {
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cc = tools.clang-unwrapped;
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libcxx = targetLlvmLibraries.libcxx;
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extraPackages = [
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targetLlvmLibraries.libcxx
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targetLlvmLibraries.libcxxabi
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targetLlvmLibraries.compiler-rt
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];
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extraBuildCommands = mkExtraBuildCommands cc;
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};
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lld = callPackage ./lld.nix {};
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lldb = callPackage ./lldb.nix {};
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bintools = callPackage ./bintools.nix {};
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lldClang = wrapCCWith rec {
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cc = tools.clang-unwrapped;
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bintools = wrapBintoolsWith {
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inherit (tools) bintools;
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};
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extraPackages = [
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# targetLlvmLibraries.libcxx
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# targetLlvmLibraries.libcxxabi
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targetLlvmLibraries.compiler-rt
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];
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extraBuildCommands = ''
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echo "-target ${stdenv.targetPlatform.config} -rtlib=compiler-rt" >> $out/nix-support/cc-cflags
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'' + mkExtraBuildCommands cc;
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};
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lldClangNoLibc = wrapCCWith rec {
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cc = tools.clang-unwrapped;
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bintools = wrapBintoolsWith {
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inherit (tools) bintools;
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libc = null;
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};
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extraPackages = [
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# targetLlvmLibraries.libcxx
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# targetLlvmLibraries.libcxxabi
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targetLlvmLibraries.compiler-rt
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];
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extraBuildCommands = ''
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echo "-target ${stdenv.targetPlatform.config} -rtlib=compiler-rt" >> $out/nix-support/cc-cflags
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'' + mkExtraBuildCommands cc;
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};
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lldClangNoCompilerRt = wrapCCWith rec {
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cc = tools.clang-unwrapped;
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bintools = wrapBintoolsWith {
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inherit (tools) bintools;
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libc = null;
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};
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extraPackages = [ ];
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extraBuildCommands = ''
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echo "-nostartfiles -target ${stdenv.targetPlatform.config}" >> $out/nix-support/cc-cflags
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'';
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};
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});
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libraries = stdenv.lib.makeExtensible (libraries: let
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callPackage = newScope (libraries // buildLlvmTools // { inherit stdenv cmake libxml2 python isl release_version version fetch; });
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in {
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compiler-rt = callPackage ./compiler-rt.nix {
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stdenv = if stdenv.hostPlatform.useLLVM or false
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then overrideCC stdenv buildLlvmTools.lldClangNoCompilerRt
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else stdenv;
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};
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stdenv = overrideCC stdenv buildLlvmTools.clang;
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libcxxStdenv = overrideCC stdenv buildLlvmTools.libcxxClang;
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libcxx = callPackage ./libc++ {};
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libcxxabi = callPackage ./libc++abi.nix {};
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openmp = callPackage ./openmp.nix {};
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});
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in { inherit tools libraries; } // libraries // tools
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