1 files changed, 58 insertions, 0 deletions
diff --git a/pkgs/development/compilers/llvm/7/libc++abi/default.nix b/pkgs/development/compilers/llvm/7/libc++abi/default.nix
new file mode 100644
index 00000000000..61879be91da
--- /dev/null
+++ b/pkgs/development/compilers/llvm/7/libc++abi/default.nix
@@ -0,0 +1,58 @@
+{ lib, stdenv, cmake, fetch, libcxx, llvm, version
+, standalone ? false
+  # on musl the shared objects don't build
+, enableShared ? !stdenv.hostPlatform.isStatic
+}:
+
+stdenv.mkDerivation {
+  pname = "libc++abi";
+  inherit version;
+
+  src = fetch "libcxxabi" "1zcqxsdjhawgz1cvpk07y3jl6fg9p3ay4nl69zsirqb2ghgyhhb2";
+
+  nativeBuildInputs = [ cmake ];
+
+  postUnpack = ''
+    unpackFile ${libcxx.src}
+    unpackFile ${llvm.src}
+    cmakeFlagsArray=($cmakeFlagsArray -DLLVM_PATH=$PWD/$(ls -d llvm-*) -DLIBCXXABI_LIBCXX_PATH=$PWD/$(ls -d libcxx-*) )
+  '' + lib.optionalString stdenv.isDarwin ''
+    export TRIPLE=x86_64-apple-darwin
+  '' + lib.optionalString stdenv.hostPlatform.isMusl ''
+    patch -p1 -d $(ls -d libcxx-*) -i ${../libcxx-0001-musl-hacks.patch}
+  '';
+
+  cmakeFlags =
+     lib.optional standalone "-DLLVM_ENABLE_LIBCXX=ON" ++
+     lib.optional (!enableShared) "-DLIBCXXABI_ENABLE_SHARED=OFF";
+
+  installPhase = if stdenv.isDarwin
+    then ''
+      for file in lib/*.dylib; do
+        # this should be done in CMake, but having trouble figuring out
+        # the magic combination of necessary CMake variables
+        # if you fancy a try, take a look at
+        # https://gitlab.kitware.com/cmake/community/-/wikis/doc/cmake/RPATH-handling
+        install_name_tool -id $out/$file $file
+      done
+      make install
+      install -d 755 $out/include
+      install -m 644 ../include/*.h $out/include
+    ''
+    else ''
+      install -d -m 755 $out/include $out/lib
+      install -m 644 lib/libc++abi.a $out/lib
+      ${lib.optionalString enableShared "install -m 644 lib/libc++abi.so.1.0 $out/lib"}
+      install -m 644 ../include/cxxabi.h $out/include
+      ${lib.optionalString enableShared "ln -s libc++abi.so.1.0 $out/lib/libc++abi.so"}
+      ${lib.optionalString enableShared "ln -s libc++abi.so.1.0 $out/lib/libc++abi.so.1"}
+    '';
+
+  meta = {
+    homepage = "https://libcxxabi.llvm.org/";
+    description = "A new implementation of low level support for a standard C++ library";
+    license = with lib.licenses; [ ncsa mit ];
+    maintainers = with lib.maintainers; [ vlstill ];
+    platforms = lib.platforms.unix;
+  };
+}