289 lines
12 KiB
Nix
289 lines
12 KiB
Nix
{
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lib,
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stdenv,
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llvm_meta,
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release_version,
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version,
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src ? null,
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monorepoSrc ? null,
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runCommand,
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cmake,
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ninja,
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python3,
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libllvm,
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jq,
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libcxx,
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linuxHeaders,
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freebsd,
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# Some platforms have switched to using compiler-rt, but still want a
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# libgcc.a for ABI compat purposes. The use case would be old code that
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# expects to link `-lgcc` but doesn't care exactly what its contents
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# are, so long as it provides some builtins.
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doFakeLibgcc ? stdenv.hostPlatform.isFreeBSD,
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# In recent releases, the compiler-rt build seems to produce
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# many `libclang_rt*` libraries, but not a single unified
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# `libcompiler_rt` library, at least under certain configurations. Some
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# platforms still expect this, however, so we symlink one into place.
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forceLinkCompilerRt ? stdenv.hostPlatform.isOpenBSD,
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devExtraCmakeFlags ? [ ],
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getVersionFile,
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fetchpatch,
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}:
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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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haveLibc = stdenv.cc.libc != null;
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# TODO: Make this account for GCC having libstdcxx, which will help
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# use clean up the `cmakeFlags` rats nest below.
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haveLibcxx = stdenv.cc.libcxx != null;
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isDarwinStatic = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isStatic;
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inherit (stdenv.hostPlatform) isMusl isAarch64 isWindows;
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noSanitizers = !haveLibc || bareMetal || isMusl || isDarwinStatic || isWindows;
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in
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stdenv.mkDerivation (finalAttrs: {
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pname = "compiler-rt${lib.optionalString haveLibc "-libc"}";
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inherit version;
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src =
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if monorepoSrc != null then
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runCommand "compiler-rt-src-${version}" { inherit (monorepoSrc) passthru; } (
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''
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mkdir -p "$out"
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cp -r ${monorepoSrc}/cmake "$out"
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''
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+ lib.optionalString (lib.versionAtLeast release_version "21") ''
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cp -r ${monorepoSrc}/third-party "$out"
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''
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+ ''
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cp -r ${monorepoSrc}/compiler-rt "$out"
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''
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)
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else
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src;
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sourceRoot = "${finalAttrs.src.name}/compiler-rt";
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patches = [
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(getVersionFile "compiler-rt/X86-support-extension.patch") # Add support for i486 i586 i686 by reusing i386 config
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# ld-wrapper dislikes `-rpath-link //nix/store`, so we normalize away the
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# extra `/`.
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(getVersionFile "compiler-rt/normalize-var.patch")
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# Fix build on armv6l
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./armv6-no-ldrexd-strexd.patch
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# See: https://github.com/NixOS/nixpkgs/pull/186575
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./darwin-plistbuddy-workaround.patch
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]
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++ [
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(getVersionFile "compiler-rt/armv6-scudo-libatomic.patch")
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]
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++ lib.optional (lib.versions.major release_version == "19") (fetchpatch {
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url = "https://github.com/llvm/llvm-project/pull/99837/commits/14ae0a660a38e1feb151928a14f35ff0f4487351.patch";
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hash = "sha256-JykABCaNNhYhZQxCvKiBn54DZ5ZguksgCHnpdwWF2no=";
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relative = "compiler-rt";
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});
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nativeBuildInputs = [
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cmake
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python3
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libllvm.dev
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ninja
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]
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++ lib.optionals stdenv.hostPlatform.isDarwin [ jq ];
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buildInputs =
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lib.optional (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isRiscV) linuxHeaders
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++ lib.optional (stdenv.hostPlatform.isFreeBSD) freebsd.include;
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env = {
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NIX_CFLAGS_COMPILE = toString (
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[
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"-DSCUDO_DEFAULT_OPTIONS=delete_size_mismatch=false:dealloc_type_mismatch=false"
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]
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++ lib.optionals (!haveLibc) [
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# The compiler got stricter about this, and there is a usellvm patch below
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# which patches out the assert include causing an implicit definition of
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# assert. It would be nicer to understand why compiler-rt thinks it should
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# be able to #include <assert.h> in the first place; perhaps it's in the
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# wrong, or perhaps there is a way to provide an assert.h.
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"-Wno-error=implicit-function-declaration"
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]
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);
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# Work around clang’s trying to invoke unprefixed-ld on Darwin when `-target` is passed.
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NIX_CFLAGS_LINK = lib.optionalString (stdenv.hostPlatform.isDarwin) "--ld-path=${stdenv.cc.bintools}/bin/${stdenv.cc.targetPrefix}ld";
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};
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cmakeFlags = [
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(lib.cmakeBool "COMPILER_RT_DEFAULT_TARGET_ONLY" true)
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(lib.cmakeFeature "CMAKE_C_COMPILER_TARGET" stdenv.hostPlatform.config)
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(lib.cmakeFeature "CMAKE_ASM_COMPILER_TARGET" stdenv.hostPlatform.config)
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]
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++ lib.optionals (useLLVM && haveLibc && stdenv.cc.libcxx == libcxx) [
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(lib.cmakeFeature "SANITIZER_CXX_ABI" "libcxxabi")
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(lib.cmakeFeature "SANITIZER_CXX_ABI_LIBNAME" "libcxxabi")
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(lib.cmakeBool "COMPILER_RT_USE_BUILTINS_LIBRARY" true)
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]
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++ lib.optionals (useLLVM && haveLibc) [
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(lib.cmakeBool "COMPILER_RT_BUILD_SANITIZERS" true)
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(lib.cmakeBool "COMPILER_RT_BUILD_PROFILE" true)
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]
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++ lib.optionals noSanitizers [
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(lib.cmakeBool "COMPILER_RT_BUILD_SANITIZERS" false)
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]
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++ lib.optionals ((useLLVM && !haveLibcxx) || !haveLibc || bareMetal || isMusl || isDarwinStatic) [
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(lib.cmakeBool "COMPILER_RT_BUILD_XRAY" false)
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(lib.cmakeBool "COMPILER_RT_BUILD_LIBFUZZER" false)
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(lib.cmakeBool "COMPILER_RT_BUILD_MEMPROF" false)
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(lib.cmakeBool "COMPILER_RT_BUILD_ORC" false) # may be possible to build with musl if necessary
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]
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++ lib.optionals (!haveLibc || bareMetal) [
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(lib.cmakeBool "COMPILER_RT_BUILD_PROFILE" false)
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(lib.cmakeBool "CMAKE_C_COMPILER_WORKS" true)
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(lib.cmakeBool "COMPILER_RT_BAREMETAL_BUILD" true)
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(lib.cmakeFeature "CMAKE_SIZEOF_VOID_P" (toString (stdenv.hostPlatform.parsed.cpu.bits / 8)))
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]
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++ lib.optionals (!haveLibc || bareMetal || isDarwinStatic) [
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(lib.cmakeBool "CMAKE_CXX_COMPILER_WORKS" true)
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]
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++ lib.optionals (!haveLibc) [
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(lib.cmakeFeature "CMAKE_C_FLAGS" "-nodefaultlibs")
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]
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++ lib.optionals useLLVM [
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(lib.cmakeBool "COMPILER_RT_BUILD_BUILTINS" true)
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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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(lib.cmakeFeature "CMAKE_TRY_COMPILE_TARGET_TYPE" "STATIC_LIBRARY")
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]
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++ lib.optionals bareMetal [
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(lib.cmakeFeature "COMPILER_RT_OS_DIR" "baremetal")
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]
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++ lib.optionals (stdenv.hostPlatform.isDarwin) (
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[
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(lib.cmakeFeature "CMAKE_LIPO" "${lib.getBin stdenv.cc.bintools.bintools}/bin/${stdenv.cc.targetPrefix}lipo")
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]
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++ lib.optionals (!haveLibcxx) [
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# Darwin fails to detect that the compiler supports the `-g` flag when there is no libc++ during the
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# compiler-rt bootstrap, which prevents compiler-rt from building. The `-g` flag is required by the
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# Darwin support, so force it to be enabled during the first stage of the compiler-rt bootstrap.
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(lib.cmakeBool "COMPILER_RT_HAS_G_FLAG" true)
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]
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++ [
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(lib.cmakeFeature "DARWIN_osx_ARCHS" stdenv.hostPlatform.darwinArch)
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(lib.cmakeFeature "DARWIN_osx_BUILTIN_ARCHS" stdenv.hostPlatform.darwinArch)
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(lib.cmakeFeature "SANITIZER_MIN_OSX_VERSION" stdenv.hostPlatform.darwinMinVersion)
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# `COMPILER_RT_DEFAULT_TARGET_ONLY` does not apply to Darwin:
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# https://github.com/llvm/llvm-project/blob/27ef42bec80b6c010b7b3729ed0528619521a690/compiler-rt/cmake/base-config-ix.cmake#L153
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(lib.cmakeBool "COMPILER_RT_ENABLE_IOS" false)
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]
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)
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++ lib.optionals (noSanitizers && lib.versionAtLeast release_version "19") [
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(lib.cmakeBool "COMPILER_RT_BUILD_CTX_PROFILE" false)
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]
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++
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lib.optional (stdenv.hostPlatform.isAarch64 && !haveLibc)
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# Fixes https://github.com/NixOS/nixpkgs/issues/393603
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(lib.cmakeBool "COMPILER_RT_DISABLE_AARCH64_FMV" true)
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++ devExtraCmakeFlags;
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outputs = [
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"out"
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"dev"
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];
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postPatch =
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lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
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substituteInPlace cmake/builtin-config-ix.cmake \
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--replace-fail 'set(X86 i386)' 'set(X86 i386 i486 i586 i686)'
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''
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+ lib.optionalString (!haveLibc) (
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(lib.optionalString (lib.versions.major release_version == "18") ''
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substituteInPlace lib/builtins/aarch64/sme-libc-routines.c \
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--replace-fail "<stdlib.h>" "<stddef.h>"
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'')
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+ ''
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substituteInPlace lib/builtins/int_util.c \
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--replace-fail "#include <stdlib.h>" ""
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''
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+ (lib.optionalString (!stdenv.hostPlatform.isFreeBSD)
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# On FreeBSD, assert/static_assert are macros and allowing them to be implicitly declared causes link errors.
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# see description above for why we're nuking assert.h normally but that doesn't work here.
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# instead, we add the freebsd.include dependency explicitly
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''
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substituteInPlace lib/builtins/clear_cache.c \
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--replace-fail "#include <assert.h>" ""
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substituteInPlace lib/builtins/cpu_model/x86.c \
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--replace-fail "#include <assert.h>" ""
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''
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)
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)
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+
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lib.optionalString (lib.versionAtLeast release_version "19")
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# codesign in sigtool doesn't support the various options used by the build
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# and is present in the bootstrap-tools. Removing find_program prevents the
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# build from trying to use it and failing.
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''
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substituteInPlace cmake/Modules/AddCompilerRT.cmake \
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--replace-fail 'find_program(CODESIGN codesign)' ""
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'';
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preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
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cmakeFlagsArray+=(
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"-DDARWIN_macosx_CACHED_SYSROOT=$SDKROOT"
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"-DDARWIN_macosx_OVERRIDE_SDK_VERSION=$(jq -r .Version "$SDKROOT/SDKSettings.json")"
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)
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'';
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# Hack around weird upstream RPATH bug
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postInstall =
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lib.optionalString (stdenv.hostPlatform.isDarwin) ''
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ln -s "$out/lib"/*/* "$out/lib"
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''
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+ lib.optionalString (useLLVM && stdenv.hostPlatform.isLinux) ''
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ln -s $out/lib/*/clang_rt.crtbegin-*.o $out/lib/crtbegin.o
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ln -s $out/lib/*/clang_rt.crtend-*.o $out/lib/crtend.o
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# Note the history of crt{begin,end}S in previous versions of llvm in nixpkg:
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# The presence of crtbegin_shared has been added and removed; it's possible
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# people have added/removed it to get it working on their platforms.
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# Try each in turn for now.
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ln -s $out/lib/*/clang_rt.crtbegin-*.o $out/lib/crtbeginS.o
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ln -s $out/lib/*/clang_rt.crtend-*.o $out/lib/crtendS.o
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ln -s $out/lib/*/clang_rt.crtbegin_shared-*.o $out/lib/crtbeginS.o
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ln -s $out/lib/*/clang_rt.crtend_shared-*.o $out/lib/crtendS.o
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''
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+ lib.optionalString doFakeLibgcc ''
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ln -s $out/lib/*/libclang_rt.builtins-*.a $out/lib/libgcc.a
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''
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+ lib.optionalString forceLinkCompilerRt ''
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ln -s $out/lib/*/libclang_rt.builtins-*.a $out/lib/libcompiler_rt.a
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'';
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meta = llvm_meta // {
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homepage = "https://compiler-rt.llvm.org/";
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description = "Compiler runtime libraries";
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longDescription = ''
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The compiler-rt project provides highly tuned implementations of the
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low-level code generator support routines like "__fixunsdfdi" and other
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calls generated when a target doesn't have a short sequence of native
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instructions to implement a core IR operation. It also provides
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implementations of run-time libraries for dynamic testing tools such as
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AddressSanitizer, ThreadSanitizer, MemorySanitizer, and DataFlowSanitizer.
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'';
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# "All of the code in the compiler-rt project is dual licensed under the MIT
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# license and the UIUC License (a BSD-like license)":
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license = with lib.licenses; [
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mit
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ncsa
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];
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broken =
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# compiler-rt requires a Clang stdenv on 32-bit RISC-V:
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# https://reviews.llvm.org/D43106#1019077
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(stdenv.hostPlatform.isRiscV32 && !stdenv.cc.isClang)
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# emutls wants `<pthread.h>` which isn't available (without experimental WASM threads proposal).
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# `enable_execute_stack.c` Also doesn't sound like something WASM would support.
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|| (stdenv.hostPlatform.isWasm && haveLibc);
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};
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})
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