forked from mirrors/nixpkgs
972f51a2da
The build breaks on libc++ 3.8 and above, which hinders our upgrade to LLVM 4 for the Darwin stdenv.
61 lines
2.3 KiB
Nix
61 lines
2.3 KiB
Nix
{ stdenv, cmake, fetch, fetchpatch, libcxx, libunwind, llvm, version }:
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let
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# Newer LLVMs (3.8 onwards) have changed how some basic C++ stuff works, which breaks builds of this older version
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llvm38-and-above = fetchpatch {
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url = "https://trac.macports.org/raw-attachment/ticket/50304/0005-string-Fix-exception-declaration.patch";
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sha256 = "1lm38n7s0l5dbl7kp4i49pvzxz1mcvlr2vgsnj47agnwhhm63jvr";
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};
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in stdenv.mkDerivation {
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name = "libc++abi-${version}";
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src = fetch "libcxxabi" "0ambfcmr2nh88hx000xb7yjm9lsqjjz49w5mlf6dlxzmj3nslzx4";
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buildInputs = [ cmake ] ++ stdenv.lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD) libunwind;
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postUnpack = ''
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unpackFile ${libcxx.src}
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unpackFile ${llvm.src}
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export NIX_CFLAGS_COMPILE+=" -I$PWD/include"
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export cmakeFlags="-DLLVM_PATH=$PWD/$(ls -d llvm-*) -DLIBCXXABI_LIBCXX_INCLUDES=$PWD/$(ls -d libcxx-*)/include"
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'' + stdenv.lib.optionalString stdenv.isDarwin ''
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export TRIPLE=x86_64-apple-darwin
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'';
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# I can't use patches directly because this is actually a patch for libc++'s source, which we manually extract
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# into the libc++abi build environment above.
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prePatch = ''(
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cd ../libcxx-*
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patch -p1 < ${llvm38-and-above}
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)'';
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installPhase = if stdenv.isDarwin
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then ''
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for file in lib/*.dylib; do
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# this should be done in CMake, but having trouble figuring out
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# the magic combination of necessary CMake variables
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# if you fancy a try, take a look at
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# http://www.cmake.org/Wiki/CMake_RPATH_handling
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install_name_tool -id $out/$file $file
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done
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make install
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install -d 755 $out/include
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install -m 644 ../include/*.h $out/include
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''
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else ''
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install -d -m 755 $out/include $out/lib
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install -m 644 lib/libc++abi.so.1.0 $out/lib
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install -m 644 ../include/cxxabi.h $out/include
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ln -s libc++abi.so.1.0 $out/lib/libc++abi.so
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ln -s libc++abi.so.1.0 $out/lib/libc++abi.so.1
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'';
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meta = {
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homepage = http://libcxxabi.llvm.org/;
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description = "A new implementation of low level support for a standard C++ library";
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license = with stdenv.lib.licenses; [ ncsa mit ];
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maintainers = with stdenv.lib.maintainers; [ vlstill ];
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platforms = stdenv.lib.platforms.unix;
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};
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}
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