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{ lib, stdenv, llvm_meta, version, fetch, cmake, python3, libllvm, libcxxabi
, doFakeLibgcc ? stdenv.hostPlatform.isFreeBSD
}:
let
useLLVM = stdenv.hostPlatform.useLLVM or false;
bareMetal = stdenv.hostPlatform.parsed.kernel.name == "none";
inherit (stdenv.hostPlatform) isMusl;
in
stdenv.mkDerivation {
pname = "compiler-rt";
inherit version;
src = fetch "compiler-rt" "0ipd4jdxpczgr2w6lzrabymz6dhzj69ywmyybjjc1q397zgrvziy";
nativeBuildInputs = [ cmake python3 libllvm.dev ];
buildInputs = lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
env.NIX_CFLAGS_COMPILE = toString [
"-DSCUDO_DEFAULT_OPTIONS=DeleteSizeMismatch=0:DeallocationTypeMismatch=0"
];
cmakeFlags = [
"-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON"
"-DCMAKE_C_COMPILER_TARGET=${stdenv.hostPlatform.config}"
"-DCMAKE_ASM_COMPILER_TARGET=${stdenv.hostPlatform.config}"
] ++ lib.optionals (useLLVM || bareMetal || isMusl) [
"-DCOMPILER_RT_BUILD_SANITIZERS=OFF"
"-DCOMPILER_RT_BUILD_XRAY=OFF"
"-DCOMPILER_RT_BUILD_LIBFUZZER=OFF"
] ++ lib.optionals (useLLVM || bareMetal) [
"-DCOMPILER_RT_BUILD_PROFILE=OFF"
] ++ lib.optionals (useLLVM || bareMetal) [
"-DCMAKE_C_COMPILER_WORKS=ON"
"-DCMAKE_CXX_COMPILER_WORKS=ON"
"-DCOMPILER_RT_BAREMETAL_BUILD=ON"
"-DCMAKE_SIZEOF_VOID_P=${toString (stdenv.hostPlatform.parsed.cpu.bits / 8)}"
] ++ lib.optionals (useLLVM) [
"-DCOMPILER_RT_BUILD_BUILTINS=ON"
"-DCMAKE_C_FLAGS=-nodefaultlibs"
#https://stackoverflow.com/questions/53633705/cmake-the-c-compiler-is-not-able-to-compile-a-simple-test-program
"-DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY"
] ++ lib.optionals (bareMetal) [
"-DCOMPILER_RT_OS_DIR=baremetal"
] ++ lib.optionals (stdenv.hostPlatform.isDarwin) [
# The compiler-rt build infrastructure sniffs supported platforms on Darwin
# and finds i386;x86_64;x86_64h. We only build for x86_64, so linking fails
# when it tries to use libc++ and libc++api for i386.
"-DDARWIN_osx_ARCHS=${stdenv.hostPlatform.darwinArch}"
];
outputs = [ "out" "dev" ];
patches = [
./codesign.patch # Revert compiler-rt commit that makes codesign mandatory
# https://github.com/llvm/llvm-project/commit/947f9692440836dcb8d88b74b69dd379d85974ce
../../common/compiler-rt/glibc.patch
./gnu-install-dirs.patch
./sys-ustat.patch
../../common/compiler-rt/libsanitizer-no-cyclades-9.patch
./compiler-rt-5-cstddef.patch
] ++ lib.optional stdenv.hostPlatform.isAarch32 ./armv7l.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 = lib.optionalString stdenv.isDarwin ''
substituteInPlace cmake/config-ix.cmake \
--replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
'' + lib.optionalString (useLLVM) ''
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 = lib.optionalString (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isWasm) ''
ln -s "$out/lib"/*/* "$out/lib"
'' + lib.optionalString (useLLVM) ''
ln -s $out/lib/*/clang_rt.crtbegin-*.o $out/lib/linux/crtbegin.o
ln -s $out/lib/*/clang_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
'' + lib.optionalString doFakeLibgcc ''
ln -s $out/lib/freebsd/libclang_rt.builtins-*.a $out/lib/freebsd/libgcc.a
'';
meta = llvm_meta // {
homepage = "https://compiler-rt.llvm.org/";
description = "Compiler runtime libraries";
longDescription = ''
The compiler-rt project provides highly tuned implementations of the
low-level code generator support routines like "__fixunsdfdi" and other
calls generated when a target doesn't have a short sequence of native
instructions to implement a core IR operation. It also provides
implementations of run-time libraries for dynamic testing tools such as
AddressSanitizer, ThreadSanitizer, MemorySanitizer, and DataFlowSanitizer.
'';
# "All of the code in the compiler-rt project is dual licensed under the MIT
# license and the UIUC License (a BSD-like license)":
license = with lib.licenses; [ mit ncsa ];
broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
};
}
|