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 db29857eb391ed002046090851a44c452b80bdbd, 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)`
60 lines
1.8 KiB
Nix
60 lines
1.8 KiB
Nix
{ lib, stdenv, fetch, fetchpatch, cmake, python3, libcxxabi, llvm, 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" "1rgqsqpgi0vkga5d7hy0iyfsqgzfz7q1xy7afdfa1snp1qjks8xv";
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postUnpack = ''
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unpackFile ${libcxxabi.src}
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mv libcxxabi-* libcxxabi
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unpackFile ${llvm.src}
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mv llvm-* llvm
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'';
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outputs = [ "out" "dev" ];
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patches = [
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(fetchpatch {
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# Backported from LLVM 12, avoids clashes with commonly used "block.h" header.
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url = "https://github.com/llvm/llvm-project/commit/19bc9ea480b60b607a3e303f20c7a3a2ea553369.patch";
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sha256 = "sha256-aWa66ogmPkG0xHzSfcpD0qZyZQcNKwLV44js4eiun78=";
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stripLen = 1;
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})
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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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preConfigure = lib.optionalString stdenv.hostPlatform.isMusl ''
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patchShebangs utils/cat_files.py
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'';
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nativeBuildInputs = [ cmake python3 ]
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++ lib.optional stdenv.isDarwin fixDarwinDylibNames;
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buildInputs = [ libcxxabi ];
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cmakeFlags = [
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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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