e238f456b8
libcxxClang still depends on cc wrapper's gccForLibs for libgcc which is not available when useLLVM is set. In such cases we need to switch to clangUseLLVM and (try) to use compiler-rt instead. Resolves #153759: pkgsLLVM.llvmPackages.stdenv now correctly clangUseLLVM as cc, allowing compilation to work as expected.
128 lines
3.8 KiB
Nix
128 lines
3.8 KiB
Nix
{ lowPrio, newScope, pkgs, lib, stdenv, cmake, gccForLibs
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, libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith
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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 = "5.0.2";
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version = release_version; # differentiating these is important for rc's
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targetConfig = stdenv.targetPlatform.config;
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fetch = name: sha256: fetchurl {
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url = "https://releases.llvm.org/${release_version}/${name}-${version}.src.tar.xz";
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inherit sha256;
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};
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clang-tools-extra_src = fetch "clang-tools-extra" "018b3fiwah8f8br5i26qmzh6sjvzchpn358sn8v079m49f2jldm3";
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llvm_meta = {
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license = lib.licenses.ncsa;
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maintainers = with lib.maintainers; [ lovek323 raskin dtzWill primeos ];
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platforms = lib.platforms.all;
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};
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tools = lib.makeExtensible (tools: let
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callPackage = newScope (tools // { inherit stdenv cmake libxml2 python3 isl release_version version fetch buildLlvmTools; });
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mkExtraBuildCommands = cc: ''
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rsrc="$out/resource-root"
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mkdir "$rsrc"
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ln -s "${cc.lib}/lib/clang/${release_version}/include" "$rsrc"
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echo "-resource-dir=$rsrc" >> $out/nix-support/cc-cflags
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ln -s "${targetLlvmLibraries.compiler-rt.out}/lib" "$rsrc/lib"
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'';
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in {
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libllvm = callPackage ./llvm {
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inherit llvm_meta;
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};
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# `llvm` historically had the binaries. When choosing an output explicitly,
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# we need to reintroduce `outputSpecified` to get the expected behavior e.g. of lib.get*
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llvm = tools.libllvm.out // { outputSpecified = false; };
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libllvm-polly = callPackage ./llvm {
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inherit llvm_meta;
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enablePolly = true;
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};
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llvm-polly = tools.libllvm-polly.lib // { outputSpecified = false; };
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libclang = callPackage ./clang {
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inherit clang-tools-extra_src llvm_meta;
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};
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clang-unwrapped = tools.libclang.out // { outputSpecified = false; };
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llvm-manpages = lowPrio (tools.libllvm.override {
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enableManpages = true;
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python3 = pkgs.python3; # don't use python-boot
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});
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clang-manpages = lowPrio (tools.libclang.override {
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enableManpages = true;
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python3 = pkgs.python3; # don't use python-boot
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});
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# pick clang appropriate for package set we are targeting
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clang =
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/**/ if stdenv.targetPlatform.useLLVM or false then tools.clangUseLLVM
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else if (pkgs.targetPackages.stdenv or stdenv).cc.isGNU then tools.libstdcxxClang
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else tools.libcxxClang;
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libstdcxxClang = wrapCCWith rec {
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cc = tools.clang-unwrapped;
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# libstdcxx is taken from gcc in an ad-hoc way in cc-wrapper.
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libcxx = null;
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extraPackages = [
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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.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 {
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inherit llvm_meta;
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};
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lldb = callPackage ./lldb {
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inherit llvm_meta;
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};
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});
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libraries = lib.makeExtensible (libraries: let
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callPackage = newScope (libraries // buildLlvmTools // { inherit stdenv cmake libxml2 python3 isl release_version version fetch; });
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in {
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compiler-rt = callPackage ./compiler-rt {
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inherit llvm_meta;
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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 ./libcxx {
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inherit llvm_meta;
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};
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libcxxabi = callPackage ./libcxxabi {
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inherit llvm_meta;
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};
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openmp = callPackage ./openmp {
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inherit llvm_meta;
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};
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});
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in { inherit tools libraries release_version; } // libraries // tools
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