mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-23 14:13:35 +00:00
8629936f82
In 7869d16545 I got rid of the symlinking
by forcing `COMPILER_RT_OS_DIR` to always be the empty string. I thought
this was good because it just make compiler-rt be installed in a normal
way.
However, various LLVM tools expect the `COMPILER_RT_OS_DIR` to be set
normally, and fail to find things when they aren't in the expected lib
subdir.
Maybe it would be best to patch that too in the long term, but for now
we just undo this change.
92 lines
4.0 KiB
Nix
92 lines
4.0 KiB
Nix
{ lib, stdenv, version, fetch, cmake, python3, llvm, libcxxabi }:
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let
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useLLVM = stdenv.hostPlatform.useLLVM or false;
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bareMetal = stdenv.hostPlatform.parsed.kernel.name == "none";
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inherit (stdenv.hostPlatform) isMusl;
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in
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stdenv.mkDerivation {
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pname = "compiler-rt";
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inherit version;
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src = fetch "compiler-rt" "1fcr3jn24yr8lh36nc0c4ikli4744i2q9m1ik67p1jymwwaixkgl";
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nativeBuildInputs = [ cmake python3 llvm.dev ];
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buildInputs = lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
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NIX_CFLAGS_COMPILE = [
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"-DSCUDO_DEFAULT_OPTIONS=DeleteSizeMismatch=0:DeallocationTypeMismatch=0"
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];
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cmakeFlags = [
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"-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON"
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"-DCMAKE_C_COMPILER_TARGET=${stdenv.hostPlatform.config}"
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"-DCMAKE_ASM_COMPILER_TARGET=${stdenv.hostPlatform.config}"
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] ++ lib.optionals (useLLVM || bareMetal || isMusl) [
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"-DCOMPILER_RT_BUILD_SANITIZERS=OFF"
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"-DCOMPILER_RT_BUILD_XRAY=OFF"
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"-DCOMPILER_RT_BUILD_LIBFUZZER=OFF"
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"-DCOMPILER_RT_BUILD_PROFILE=OFF"
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] ++ lib.optionals (useLLVM || bareMetal) [
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"-DCMAKE_C_COMPILER_WORKS=ON"
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"-DCMAKE_CXX_COMPILER_WORKS=ON"
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"-DCOMPILER_RT_BAREMETAL_BUILD=ON"
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"-DCMAKE_SIZEOF_VOID_P=${toString (stdenv.hostPlatform.parsed.cpu.bits / 8)}"
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] ++ lib.optionals (useLLVM) [
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"-DCOMPILER_RT_BUILD_BUILTINS=ON"
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"-DCMAKE_C_FLAGS=-nodefaultlibs"
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#https://stackoverflow.com/questions/53633705/cmake-the-c-compiler-is-not-able-to-compile-a-simple-test-program
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"-DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY"
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] ++ lib.optionals (bareMetal) [
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"-DCOMPILER_RT_OS_DIR=baremetal"
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] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
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# The compiler-rt build infrastructure sniffs supported platforms on Darwin
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# and finds i386;x86_64;x86_64h. We only build for x86_64, so linking fails
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# when it tries to use libc++ and libc++api for i386.
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"-DDARWIN_osx_ARCHS=${stdenv.hostPlatform.darwinArch}"
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];
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outputs = [ "out" "dev" ];
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patches = [
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./codesign.patch # Revert compiler-rt commit that makes codesign mandatory
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# https://github.com/llvm/llvm-project/commit/947f9692440836dcb8d88b74b69dd379d85974ce
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../../common/compiler-rt/glibc.patch
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./gnu-install-dirs.patch
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] ++ lib.optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch
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++ lib.optional stdenv.hostPlatform.isAarch32 ./armv7l.patch;
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# TSAN requires XPC on Darwin, which we have no public/free source files for. We can depend on the Apple frameworks
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# to get it, but they're unfree. Since LLVM is rather central to the stdenv, we patch out TSAN support so that Hydra
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# can build this. If we didn't do it, basically the entire nixpkgs on Darwin would have an unfree dependency and we'd
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# get no binary cache for the entire platform. If you really find yourself wanting the TSAN, make this controllable by
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# a flag and turn the flag off during the stdenv build.
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postPatch = lib.optionalString (!stdenv.isDarwin) ''
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substituteInPlace cmake/builtin-config-ix.cmake \
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--replace 'set(X86 i386)' 'set(X86 i386 i486 i586 i686)'
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'' + lib.optionalString stdenv.isDarwin ''
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substituteInPlace cmake/config-ix.cmake \
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--replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
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'' + lib.optionalString (useLLVM) ''
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substituteInPlace lib/builtins/int_util.c \
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--replace "#include <stdlib.h>" ""
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substituteInPlace lib/builtins/clear_cache.c \
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--replace "#include <assert.h>" ""
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substituteInPlace lib/builtins/cpu_model.c \
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--replace "#include <assert.h>" ""
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'';
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# Hack around weird upsream RPATH bug
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postInstall = lib.optionalString (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isWasm) ''
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ln -s "$out/lib"/*/* "$out/lib"
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'' + lib.optionalString (useLLVM) ''
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ln -s $out/lib/*/clang_rt.crtbegin-*.o $out/lib/linux/crtbegin.o
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ln -s $out/lib/*/clang_rt.crtend-*.o $out/lib/linux/crtend.o
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ln -s $out/lib/*/clang_rt.crtbegin_shared-*.o $out/lib/linux/crtbeginS.o
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ln -s $out/lib/*/clang_rt.crtend_shared-*.o $out/lib/linux/crtendS.o
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'';
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}
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