diff options
Diffstat (limited to 'nixpkgs/pkgs/development/compilers/llvm/13/libcxx/default.nix')
-rw-r--r-- | nixpkgs/pkgs/development/compilers/llvm/13/libcxx/default.nix | 155 |
1 files changed, 99 insertions, 56 deletions
diff --git a/nixpkgs/pkgs/development/compilers/llvm/13/libcxx/default.nix b/nixpkgs/pkgs/development/compilers/llvm/13/libcxx/default.nix index 2974fc80e191..b39b4f37ff1c 100644 --- a/nixpkgs/pkgs/development/compilers/llvm/13/libcxx/default.nix +++ b/nixpkgs/pkgs/development/compilers/llvm/13/libcxx/default.nix @@ -1,80 +1,124 @@ -{ lib, stdenv, llvm_meta, src, cmake, python3, fixDarwinDylibNames, version -, cxxabi ? if stdenv.hostPlatform.isFreeBSD then libcxxrt else libcxxabi -, libcxxabi, libcxxrt +{ lib, stdenv, llvm_meta +, monorepoSrc, runCommand, substitute +, 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 }: -assert stdenv.isDarwin -> cxxabi.pname == "libcxxabi"; +# 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"; + 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=${lib.getDev cxxabi}/include" + ] ++ lib.optionals (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) [ + "-DLIBCXX_HAS_MUSL_LIBC=1" + ] ++ lib.optionals useLLVM [ + "-DLIBCXX_USE_COMPILER_RT=ON" + ] ++ lib.optionals stdenv.hostPlatform.isWasm [ + "-DLIBCXX_ENABLE_THREADS=OFF" + "-DLIBCXX_ENABLE_FILESYSTEM=OFF" + "-DLIBCXX_ENABLE_EXCEPTIONS=OFF" + ] ++ lib.optionals (!enableShared) [ + "-DLIBCXX_ENABLE_SHARED=OFF" + ]; + + cmakeFlags = [ + "-DLLVM_ENABLE_RUNTIMES=${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; + +in stdenv.mkDerivation rec { - pname = if headersOnly then "cxx-headers" else "libcxx"; - inherit version; + pname = basename; + inherit version cmakeFlags; - inherit src; - sourceRoot = "${src.name}/libcxx"; + src = runCommand "${pname}-src-${version}" {} ('' + mkdir -p "$out/llvm" + cp -r ${monorepoSrc}/libcxx "$out" + cp -r ${monorepoSrc}/llvm/cmake "$out/llvm" + cp -r ${monorepoSrc}/llvm/utils "$out/llvm" + cp -r ${monorepoSrc}/runtimes "$out" + '' + lib.optionalString (cxxabi == null) '' + cp -r ${monorepoSrc}/libcxxabi "$out" + ''); - outputs = [ "out" ] ++ lib.optional (!headersOnly) "dev"; + outputs = [ "out" "dev" ]; patches = [ - ./gnu-install-dirs.patch + (substitute { + src = ../../common/libcxxabi/wasm.patch; + replacements = [ + "--replace-fail" "/cmake/" "/llvm/cmake/" + ]; + }) ] ++ lib.optionals stdenv.hostPlatform.isMusl [ - ../../common/libcxx/libcxx-0001-musl-hacks.patch + (substitute { + src = ../../common/libcxx/libcxx-0001-musl-hacks.patch; + replacements = [ + "--replace-fail" "/include/" "/libcxx/include/" + ]; + }) ]; + postPatch = '' + cd runtimes + ''; + preConfigure = lib.optionalString stdenv.hostPlatform.isMusl '' patchShebangs utils/cat_files.py ''; - nativeBuildInputs = [ cmake python3 ] - ++ lib.optional stdenv.isDarwin fixDarwinDylibNames; + nativeBuildInputs = [ cmake ninja python3 ] + ++ lib.optional stdenv.isDarwin fixDarwinDylibNames + ++ lib.optional (cxxabi != null) lndir; - buildInputs = lib.optionals (!headersOnly) [ cxxabi ]; + buildInputs = [ cxxabi ] + ++ lib.optionals (useLLVM && !stdenv.hostPlatform.isWasm) [ libunwind ]; - cmakeFlags = [ "-DLIBCXX_CXX_ABI=${cxxabi.pname}" ] - ++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) "-DLIBCXX_HAS_MUSL_LIBC=1" - ++ lib.optional (stdenv.hostPlatform.useLLVM or false) "-DLIBCXX_USE_COMPILER_RT=ON" - ++ lib.optionals stdenv.hostPlatform.isWasm [ - "-DLIBCXX_ENABLE_THREADS=OFF" - "-DLIBCXX_ENABLE_FILESYSTEM=OFF" - "-DLIBCXX_ENABLE_EXCEPTIONS=OFF" - ] ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF"; - - buildFlags = lib.optional headersOnly "generate-cxx-headers"; - installTargets = lib.optional headersOnly "install-cxx-headers"; - - preInstall = lib.optionalString (stdenv.isDarwin && !headersOnly) '' - for file in lib/*.dylib; do - if [ -L "$file" ]; then continue; fi - - baseName=$(basename $(${stdenv.cc.targetPrefix}otool -D $file | tail -n 1)) - installName="$out/lib/$baseName" - abiName=$(echo "$baseName" | sed -e 's/libc++/libc++abi/') - - for other in $(${stdenv.cc.targetPrefix}otool -L $file | awk '$1 ~ "/libc\\+\\+abi" { print $1 }'); do - ${stdenv.cc.targetPrefix}install_name_tool -change $other ${cxxabi}/lib/$abiName $file - done - done - ''; - - # At this point, cxxabi headers would be installed in the dev output, which - # prevents moveToOutput from doing its job later in the build process. - postInstall = lib.optionalString (!headersOnly) '' - mv "$dev/include/c++/v1/"* "$out/include/c++/v1/" - pushd "$dev" - rmdir -p include/c++/v1 - popd + # 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 // { @@ -84,7 +128,6 @@ stdenv.mkDerivation rec { libc++ is an implementation of the C++ standard library, targeting C++11, C++14 and above. ''; - # "All of the code in libc++ is dual licensed under the MIT license and the # UIUC License (a BSD-like license)": license = with lib.licenses; [ mit ncsa ]; |