diff options
Diffstat (limited to 'nixpkgs/pkgs/development/compilers/llvm/17/libcxx/default.nix')
| -rw-r--r-- | nixpkgs/pkgs/development/compilers/llvm/17/libcxx/default.nix | 169 |
1 files changed, 86 insertions, 83 deletions
diff --git a/nixpkgs/pkgs/development/compilers/llvm/17/libcxx/default.nix b/nixpkgs/pkgs/development/compilers/llvm/17/libcxx/default.nix index 8f4b0cec8d40..9ee4fd180d4b 100644 --- a/nixpkgs/pkgs/development/compilers/llvm/17/libcxx/default.nix +++ b/nixpkgs/pkgs/development/compilers/llvm/17/libcxx/default.nix @@ -1,71 +1,102 @@ { lib, stdenv, llvm_meta , monorepoSrc, runCommand, fetchpatch -, cmake, ninja, python3, fixDarwinDylibNames, version -, cxxabi ? if stdenv.hostPlatform.isFreeBSD then libcxxrt else libcxxabi -, libcxxabi, libcxxrt, libunwind +, cmake, lndir, ninja, python3, fixDarwinDylibNames, version +, cxxabi ? if stdenv.hostPlatform.isFreeBSD then libcxxrt else null +, libcxxrt, libunwind , enableShared ? !stdenv.hostPlatform.isStatic - -# If headersOnly is true, the resulting package would only include the headers. -# Use this to break the circular dependency between libcxx and libcxxabi. -# -# Some context: -# https://reviews.llvm.org/rG1687f2bbe2e2aaa092f942d4a97d41fad43eedfb -, headersOnly ? false }: +# external cxxabi is not supported on Darwin as the build will not link libcxx +# properly and not re-export the cxxabi symbols into libcxx +# https://github.com/NixOS/nixpkgs/issues/166205 +# https://github.com/NixOS/nixpkgs/issues/269548 +assert cxxabi == null || !stdenv.hostPlatform.isDarwin; let basename = "libcxx"; -in + cxxabiName = "lib${if cxxabi == null then "cxxabi" else cxxabi.libName}"; + runtimes = [ "libcxx" ] ++ lib.optional (cxxabi == null) "libcxxabi"; + + # Note: useLLVM is likely false for Darwin but true under pkgsLLVM + useLLVM = stdenv.hostPlatform.useLLVM or false; + + cxxabiCMakeFlags = lib.optionals (useLLVM && !stdenv.hostPlatform.isWasm) [ + "-DLIBCXXABI_USE_COMPILER_RT=ON" + "-DLIBCXXABI_USE_LLVM_UNWINDER=ON" + ] ++ lib.optionals stdenv.hostPlatform.isWasm [ + "-DLIBCXXABI_ENABLE_THREADS=OFF" + "-DLIBCXXABI_ENABLE_EXCEPTIONS=OFF" + ] ++ lib.optionals (!enableShared) [ + "-DLIBCXXABI_ENABLE_SHARED=OFF" + ]; + + cxxCMakeFlags = [ + "-DLIBCXX_CXX_ABI=${cxxabiName}" + ] ++ lib.optionals (cxxabi != null) [ + "-DLIBCXX_CXX_ABI_INCLUDE_PATHS=${lib.getDev cxxabi}/include" + ] ++ lib.optionals (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) [ + "-DLIBCXX_HAS_MUSL_LIBC=1" + ] ++ lib.optionals useLLVM [ + "-DLIBCXX_USE_COMPILER_RT=ON" + # There's precedent for this in llvm-project/libcxx/cmake/caches. + # In a monorepo build you might do the following in the libcxxabi build: + # -DLLVM_ENABLE_PROJECTS=libcxxabi;libunwinder + # -DLIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY=On + # libcxx appears to require unwind and doesn't pull it in via other means. + "-DLIBCXX_ADDITIONAL_LIBRARIES=unwind" + ] ++ lib.optionals stdenv.hostPlatform.isWasm [ + "-DLIBCXX_ENABLE_THREADS=OFF" + "-DLIBCXX_ENABLE_FILESYSTEM=OFF" + "-DLIBCXX_ENABLE_EXCEPTIONS=OFF" + ] ++ lib.optionals (!enableShared) [ + "-DLIBCXX_ENABLE_SHARED=OFF" + ]; + + cmakeFlags = [ + "-DLLVM_ENABLE_RUNTIMES=${lib.concatStringsSep ";" runtimes}" + ] ++ lib.optionals (useLLVM && !stdenv.hostPlatform.isWasm) [ + # libcxxabi's CMake looks as though it treats -nostdlib++ as implying -nostdlib, + # but that does not appear to be the case for example when building + # pkgsLLVM.libcxxabi (which uses clangNoCompilerRtWithLibc). + "-DCMAKE_EXE_LINKER_FLAGS=-nostdlib" + "-DCMAKE_SHARED_LINKER_FLAGS=-nostdlib" + ] ++ lib.optionals stdenv.hostPlatform.isWasm [ + "-DCMAKE_C_COMPILER_WORKS=ON" + "-DCMAKE_CXX_COMPILER_WORKS=ON" + "-DUNIX=ON" # Required otherwise libc++ fails to detect the correct linker + ] ++ cxxCMakeFlags + ++ lib.optionals (cxxabi == null) cxxabiCMakeFlags; -assert stdenv.isDarwin -> cxxabi.libName == "c++abi"; +in stdenv.mkDerivation rec { - pname = basename + lib.optionalString headersOnly "-headers"; - inherit version; + pname = basename; + inherit version cmakeFlags; - src = runCommand "${pname}-src-${version}" {} '' - mkdir -p "$out" - cp -r ${monorepoSrc}/cmake "$out" - cp -r ${monorepoSrc}/${basename} "$out" - mkdir -p "$out/libcxxabi" - cp -r ${monorepoSrc}/libcxxabi/include "$out/libcxxabi" + src = runCommand "${pname}-src-${version}" {} ('' mkdir -p "$out/llvm" + cp -r ${monorepoSrc}/cmake "$out" + cp -r ${monorepoSrc}/libcxx "$out" cp -r ${monorepoSrc}/llvm/cmake "$out/llvm" cp -r ${monorepoSrc}/llvm/utils "$out/llvm" cp -r ${monorepoSrc}/third-party "$out" cp -r ${monorepoSrc}/runtimes "$out" - ''; - - sourceRoot = "${src.name}/runtimes"; - - outputs = [ "out" ] ++ lib.optional (!headersOnly) "dev"; + '' + lib.optionalString (cxxabi == null) '' + cp -r ${monorepoSrc}/libcxxabi "$out" + ''); - prePatch = '' - cd ../${basename} - chmod -R u+w . - ''; + outputs = [ "out" "dev" ]; - patches = [ - # fix for https://github.com/NixOS/nixpkgs/issues/269548 - # https://github.com/llvm/llvm-project/pull/77218 - (fetchpatch { - name = "darwin-system-libcxxabi-link-flags.patch"; - url = "https://github.com/llvm/llvm-project/commit/c5b89b29ee6e3c444a355fd1cf733ce7ab2e316a.patch"; - hash = "sha256-LNoPg1KCoP8RWxU/AzHR52f4Dww24I9BGQJedMhFxyQ="; - relative = "libcxx"; - }) - ] ++ lib.optionals (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13") [ + patches = lib.optionals (stdenv.isDarwin && lib.versionOlder stdenv.hostPlatform.darwinMinVersion "10.13") [ # https://github.com/llvm/llvm-project/issues/64226 (fetchpatch { name = "0042-mbstate_t-not-defined.patch"; url = "https://github.com/macports/macports-ports/raw/acd8acb171f1658596ed1cf25da48d5b932e2d19/lang/llvm-17/files/0042-mbstate_t-not-defined.patch"; - relative = "libcxx"; - hash = "sha256-fVbX99W1gQrSaMFeBkzsJmNWNy0xVSw+oFvDe4AYXL0="; + hash = "sha256-jo+DYA6zuSv9OH3A0bYwY5TlkWprup4OKQ7rfK1WHBI="; }) ]; postPatch = '' - cd ../runtimes + cd runtimes ''; preConfigure = lib.optionalString stdenv.hostPlatform.isMusl '' @@ -73,50 +104,22 @@ stdenv.mkDerivation rec { ''; nativeBuildInputs = [ cmake ninja python3 ] - ++ lib.optional stdenv.isDarwin fixDarwinDylibNames; - - buildInputs = - lib.optionals (!headersOnly) [ cxxabi ] - ++ lib.optionals (stdenv.hostPlatform.useLLVM or false && !stdenv.hostPlatform.isWasm) [ libunwind ]; - - cmakeFlags = let - # See: https://libcxx.llvm.org/BuildingLibcxx.html#cmdoption-arg-libcxx-cxx-abi-string - libcxx_cxx_abi_opt = { - "c++abi" = "system-libcxxabi"; - "cxxrt" = "libcxxrt"; - }.${cxxabi.libName} or (throw "unknown cxxabi: ${cxxabi.libName} (${cxxabi.pname})"); - in [ - "-DLLVM_ENABLE_RUNTIMES=libcxx" - "-DLIBCXX_CXX_ABI=${if headersOnly then "none" else libcxx_cxx_abi_opt}" - ] ++ lib.optional (!headersOnly && cxxabi.libName == "c++abi") "-DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi.dev}/include/c++/v1" - ++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) "-DLIBCXX_HAS_MUSL_LIBC=1" - ++ lib.optionals (stdenv.hostPlatform.useLLVM or false) [ - "-DLIBCXX_USE_COMPILER_RT=ON" - # There's precedent for this in llvm-project/libcxx/cmake/caches. - # In a monorepo build you might do the following in the libcxxabi build: - # -DLLVM_ENABLE_PROJECTS=libcxxabi;libunwinder - # -DLIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY=On - # libcxx appears to require unwind and doesn't pull it in via other means. - "-DLIBCXX_ADDITIONAL_LIBRARIES=unwind" - ] ++ lib.optionals stdenv.hostPlatform.isWasm [ - "-DLIBCXX_ENABLE_THREADS=OFF" - "-DLIBCXX_ENABLE_FILESYSTEM=OFF" - "-DLIBCXX_ENABLE_EXCEPTIONS=OFF" - "-DUNIX=ON" # Required otherwise libc++ fails to detect the correct linker - ] ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF" - # If we're only building the headers we don't actually *need* a functioning - # C/C++ compiler: - ++ lib.optionals (headersOnly) [ - "-DCMAKE_C_COMPILER_WORKS=ON" - "-DCMAKE_CXX_COMPILER_WORKS=ON" - ]; - - ninjaFlags = lib.optional headersOnly "generate-cxx-headers"; - installTargets = lib.optional headersOnly "install-cxx-headers"; + ++ lib.optional stdenv.isDarwin fixDarwinDylibNames + ++ lib.optional (cxxabi != null) lndir; + + buildInputs = [ cxxabi ] + ++ lib.optionals (useLLVM && !stdenv.hostPlatform.isWasm) [ libunwind ]; + + # libc++.so is a linker script which expands to multiple libraries, + # libc++.so.1 and libc++abi.so or the external cxxabi. ld-wrapper doesn't + # support linker scripts so the external cxxabi needs to be symlinked in + postInstall = lib.optionalString (cxxabi != null) '' + lndir ${lib.getDev cxxabi}/include ''${!outputDev}/include/c++/v1 + lndir ${lib.getLib cxxabi}/lib ''${!outputLib}/lib + ''; passthru = { isLLVM = true; - inherit cxxabi; }; meta = llvm_meta // { |