nixpkgs/pkgs/development/compilers/llvm/7/compiler-rt.nix
Pierre Bourdon 7541e4f8ac
llvm/7/compiler-rt: define CMAKE_*_COMPILER_TARGET unconditionally
When building with -DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON the compiler-rt
CMake configuration attempts to use CMAKE_*_COMPILER_TARGET variables,
which are usually only defined in cross-compilation mode.
2019-02-28 04:29:05 +01:00

62 lines
2.9 KiB
Nix

{ stdenv, version, fetch, cmake, python, llvm, libcxxabi }:
stdenv.mkDerivation rec {
name = "compiler-rt-${version}";
inherit version;
src = fetch "compiler-rt" "065ybd8fsc4h2hikbdyricj6pyv4r7r7kpcikhb2y5zf370xybkq";
nativeBuildInputs = [ cmake python llvm ];
buildInputs = stdenv.lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
cmakeFlags = [
"-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON"
"-DCMAKE_C_COMPILER_TARGET=${stdenv.hostPlatform.config}"
"-DCMAKE_ASM_COMPILER_TARGET=${stdenv.hostPlatform.config}"
] ++ stdenv.lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) [
"-DCMAKE_C_FLAGS=-nodefaultlibs"
"-DCMAKE_CXX_COMPILER_WORKS=ON"
"-DCOMPILER_RT_BUILD_BUILTINS=ON"
"-DCOMPILER_RT_BUILD_SANITIZERS=OFF"
"-DCOMPILER_RT_BUILD_XRAY=OFF"
"-DCOMPILER_RT_BUILD_LIBFUZZER=OFF"
"-DCOMPILER_RT_BUILD_PROFILE=OFF"
"-DCOMPILER_RT_BAREMETAL_BUILD=ON"
];
outputs = [ "out" "dev" ];
patches = [
./compiler-rt-codesign.patch # Revert compiler-rt commit that makes codesign mandatory
] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch
++ stdenv.lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) ./crtbegin-and-end.patch
++ stdenv.lib.optional stdenv.hostPlatform.isDarwin ./compiler-rt-clock_gettime.patch;
# TSAN requires XPC on Darwin, which we have no public/free source files for. We can depend on the Apple frameworks
# to get it, but they're unfree. Since LLVM is rather central to the stdenv, we patch out TSAN support so that Hydra
# can build this. If we didn't do it, basically the entire nixpkgs on Darwin would have an unfree dependency and we'd
# get no binary cache for the entire platform. If you really find yourself wanting the TSAN, make this controllable by
# a flag and turn the flag off during the stdenv build.
postPatch = stdenv.lib.optionalString stdenv.isDarwin ''
substituteInPlace cmake/config-ix.cmake \
--replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
'' + stdenv.lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
substituteInPlace lib/builtins/int_util.c \
--replace "#include <stdlib.h>" ""
substituteInPlace lib/builtins/clear_cache.c \
--replace "#include <assert.h>" ""
substituteInPlace lib/builtins/cpu_model.c \
--replace "#include <assert.h>" ""
'';
# Hack around weird upsream RPATH bug
postInstall = stdenv.lib.optionalString stdenv.isDarwin ''
ln -s "$out/lib"/*/* "$out/lib"
'' + stdenv.lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
ln -s $out/lib/*/clang_rt.crtbegin-*.o $out/lib/linux/crtbegin.o
ln -s $out/lib/*/cclang_rt.crtend-*.o $out/lib/linux/crtend.o
ln -s $out/lib/*/clang_rt.crtbegin_shared-*.o $out/lib/linux/crtbeginS.o
ln -s $out/lib/*/clang_rt.crtend_shared-*.o $out/lib/linux/crtendS.o
'';
enableParallelBuilding = true;
}