nixpkgs/pkgs/development/compilers/llvm/6/compiler-rt.nix
2019-08-28 11:07:32 +00:00

38 lines
1.5 KiB
Nix

{ stdenv, version, fetch, cmake, python, llvm, libcxxabi }:
with stdenv.lib;
stdenv.mkDerivation {
pname = "compiler-rt";
inherit version;
src = fetch "compiler-rt" "1fcr3jn24yr8lh36nc0c4ikli4744i2q9m1ik67p1jymwwaixkgl";
nativeBuildInputs = [ cmake python llvm ];
buildInputs = stdenv.lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
configureFlags = [
"-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON"
];
outputs = [ "out" "dev" ];
patches = [
./compiler-rt-codesign.patch # Revert compiler-rt commit that makes codesign mandatory
] ++ optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch;
# TSAN requires XPC on Darwin, which we have no public/free source files for. We can depend on the Apple frameworks
# to get it, but they're unfree. Since LLVM is rather central to the stdenv, we patch out TSAN support so that Hydra
# can build this. If we didn't do it, basically the entire nixpkgs on Darwin would have an unfree dependency and we'd
# get no binary cache for the entire platform. If you really find yourself wanting the TSAN, make this controllable by
# a flag and turn the flag off during the stdenv build.
postPatch = stdenv.lib.optionalString stdenv.isDarwin ''
substituteInPlace cmake/config-ix.cmake \
--replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
'';
# Hack around weird upsream RPATH bug
postInstall = stdenv.lib.optionalString stdenv.isDarwin ''
ln -s "$out/lib"/*/* "$out/lib"
'';
enableParallelBuilding = true;
}