forked from mirrors/nixpkgs
7869d16545
Also begin to start work on cross compilation, though that will have to
be finished later.
The patches are based on the first version of
https://reviews.llvm.org/D99484. It's very annoying to do the
back-porting but the review has uncovered nothing super major so I'm
fine sticking with what I've got.
Beyond making the outputs work, I also strove to re-sync the packages,
as they have been drifting pointlessly apart for some time.
----
Other misc notes, highly incomplete
- lvm-config-native and llvm-config are put in `dev` because they are
tools just for build time.
- Clang no longer has an lld dep. That was introduced in
db29857eb3, but if clang needs help
finding lld when it is used we should just pass it flags / put in the
resource dir. Providing it at build time increases critical path
length for no good reason.
----
A note on `nativeCC`:
`stdenv` takes tools from the previous stage, so:
1. `pkgsBuildBuild`: `(?1, x, x)`
2. `pkgsBuildBuild.stdenv.cc`: `(?0, ?1, x)`
while:
1. `pkgsBuildBuild`: `(?1, x, x)`
2. `pkgsBuildBuild.targetPackages`: `(x, x, ?2)`
3. `pkgsBuildBuild.targetPackages.stdenv.cc`: `(?1, x, x)`
61 lines
2 KiB
Nix
61 lines
2 KiB
Nix
{ lib, stdenv, fetch, cmake, python3, libcxxabi, fixDarwinDylibNames, version
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, enableShared ? !stdenv.hostPlatform.isStatic
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}:
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stdenv.mkDerivation {
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pname = "libc++";
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inherit version;
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src = fetch "libcxx" "0y4vc9z36c1zlq15cnibdzxnc1xi5glbc6klnm8a41q3db4541kz";
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postUnpack = ''
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unpackFile ${libcxxabi.src}
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export LIBCXXABI_INCLUDE_DIR="$PWD/$(ls -d libcxxabi-${version}*)/include"
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'';
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outputs = [ "out" "dev" ];
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patches = [
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./gnu-install-dirs.patch
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] ++ lib.optional stdenv.hostPlatform.isMusl ../../libcxx-0001-musl-hacks.patch;
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prePatch = ''
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substituteInPlace lib/CMakeLists.txt --replace "/usr/lib/libc++" "\''${LIBCXX_LIBCXXABI_LIB_PATH}/libc++"
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'';
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preConfigure = ''
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# Get headers from the cxxabi source so we can see private headers not installed by the cxxabi package
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cmakeFlagsArray=($cmakeFlagsArray -DLIBCXX_CXX_ABI_INCLUDE_PATHS="$LIBCXXABI_INCLUDE_DIR")
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'' + lib.optionalString stdenv.hostPlatform.isMusl ''
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patchShebangs utils/cat_files.py
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'';
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nativeBuildInputs = [ cmake ]
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++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) python3
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++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
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buildInputs = [ libcxxabi ];
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cmakeFlags = [
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"-DLIBCXX_LIBCXXABI_LIB_PATH=${libcxxabi}/lib"
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"-DLIBCXX_LIBCPPABI_VERSION=2"
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"-DLIBCXX_CXX_ABI=libcxxabi"
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] ++ lib.optional (stdenv.hostPlatform.isMusl || stdenv.hostPlatform.isWasi) "-DLIBCXX_HAS_MUSL_LIBC=1"
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++ lib.optional (stdenv.hostPlatform.useLLVM or false) "-DLIBCXX_USE_COMPILER_RT=ON"
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++ lib.optional stdenv.hostPlatform.isWasm [
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"-DLIBCXX_ENABLE_THREADS=OFF"
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"-DLIBCXX_ENABLE_FILESYSTEM=OFF"
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"-DLIBCXX_ENABLE_EXCEPTIONS=OFF"
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] ++ lib.optional (!enableShared) "-DLIBCXX_ENABLE_SHARED=OFF";
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passthru = {
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isLLVM = true;
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};
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meta = {
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homepage = "https://libcxx.llvm.org/";
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description = "A new implementation of the C++ standard library, targeting C++11";
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license = with lib.licenses; [ ncsa mit ];
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platforms = lib.platforms.all;
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};
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}
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