nixpkgs/pkgs/development/compilers/llvm/3.9/clang/default.nix

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{ stdenv, fetch, cmake, libxml2, libedit, llvm, version, clang-tools-extra_src, python }:
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let
gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
self = stdenv.mkDerivation {
name = "clang-${version}";
unpackPhase = ''
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unpackFile ${fetch "cfe" "0qsyyb40iwifhhlx9a3drf8z6ni6zwyk3bvh0kx2gs6yjsxwxi76"}
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mv cfe-${version}.src clang
sourceRoot=$PWD/clang
unpackFile ${clang-tools-extra_src}
mv clang-tools-extra-* $sourceRoot/tools/extra
'';
nativeBuildInputs = [ cmake ];
buildInputs = [ libedit libxml2 llvm python ];
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cmakeFlags = [
"-DCMAKE_CXX_FLAGS=-std=c++11"
] ++
# Maybe with compiler-rt this won't be needed?
(stdenv.lib.optional stdenv.isLinux "-DGCC_INSTALL_PREFIX=${gcc}") ++
(stdenv.lib.optional (stdenv.cc.libc != null) "-DC_INCLUDE_DIRS=${stdenv.cc.libc}/include");
patches = [ ./purity.patch ];
postPatch = ''
sed -i -e 's/Args.hasArg(options::OPT_nostdlibinc)/true/' lib/Driver/Tools.cpp
sed -i -e 's/DriverArgs.hasArg(options::OPT_nostdlibinc)/true/' lib/Driver/ToolChains.cpp
'';
outputs = [ "out" "python" ];
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# Clang expects to find LLVMgold in its own prefix
# Clang expects to find sanitizer libraries in its own prefix
postInstall = ''
ln -sv ${llvm}/lib/LLVMgold.so $out/lib
ln -sv ${llvm}/lib/clang/${version}/lib $out/lib/clang/${version}/
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ln -sv $out/bin/clang $out/bin/cpp
mkdir -p $python/bin $python/share/clang/
mv $out/bin/{git-clang-format,scan-view} $python/bin
if [ -e $out/bin/set-xcode-analyzer ]; then
mv $out/bin/set-xcode-analyzer $python/bin
fi
mv $out/share/clang/*.py $python/share/clang
rm $out/bin/c-index-test
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'';
enableParallelBuilding = true;
passthru = {
lib = self; # compatibility with gcc, so that `stdenv.cc.cc.lib` works on both
isClang = true;
inherit llvm;
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} // stdenv.lib.optionalAttrs stdenv.isLinux {
inherit gcc;
};
meta = {
description = "A c, c++, objective-c, and objective-c++ frontend for the llvm compiler";
homepage = http://llvm.org/;
license = stdenv.lib.licenses.ncsa;
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platforms = stdenv.lib.platforms.all;
};
};
in self