1 files changed, 66 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/compilers/llvm/rocm/clang.nix b/nixpkgs/pkgs/development/compilers/llvm/rocm/clang.nix
new file mode 100644
index 00000000000..6bb23b77543
--- /dev/null
+++ b/nixpkgs/pkgs/development/compilers/llvm/rocm/clang.nix
@@ -0,0 +1,66 @@
+{ stdenv
+, fetchFromGitHub
+, cmake
+, python
+, llvm
+, clang-tools-extra_src ? null
+, lld
+
+, version
+, src
+}:
+
+stdenv.mkDerivation rec {
+  inherit version src;
+
+  pname = "clang";
+
+  nativeBuildInputs = [ cmake python ];
+
+  buildInputs = [ llvm ];
+
+  hardeningDisable = [ "all" ];
+
+  cmakeFlags = [
+    "-DLLVM_CMAKE_PATH=${llvm}/lib/cmake/llvm"
+    "-DLLVM_MAIN_SRC_DIR=${llvm.src}"
+    "-DCLANG_SOURCE_DIR=${src}"
+    "-DLLVM_ENABLE_RTTI=ON"
+  ];
+
+  VCSVersion = ''
+    #undef LLVM_REVISION
+    #undef LLVM_REPOSITORY
+    #undef CLANG_REVISION
+    #undef CLANG_REPOSITORY
+  '';
+
+  postUnpack = stdenv.lib.optionalString (!(isNull clang-tools-extra_src)) ''
+    ln -s ${clang-tools-extra_src} $sourceRoot/tools/extra
+  '';
+
+  # Rather than let cmake extract version information from LLVM or
+  # clang source control repositories, we generate the wanted
+  # `VCSVersion.inc` file ourselves and remove it from the
+  # depencencies of the `clangBasic` target.
+  preConfigure = ''
+    sed 's/  ''${version_inc}//' -i lib/Basic/CMakeLists.txt
+    sed 's|sys::path::parent_path(BundlerExecutable)|StringRef("${llvm}/bin")|' -i tools/clang-offload-bundler/ClangOffloadBundler.cpp
+    sed 's|\([[:space:]]*std::string Linker = \)getToolChain().GetProgramPath(getShortName())|\1"${lld}/bin/ld.lld"|' -i lib/Driver/ToolChains/AMDGPU.cpp
+    substituteInPlace lib/Driver/ToolChains/AMDGPU.h --replace ld.lld ${lld}/bin/ld.lld
+    sed 's|configure_file(AST/gen_ast_dump_json_test.py ''${LLVM_TOOLS_BINARY_DIR}/gen_ast_dump_json_test.py COPYONLY)||' -i test/CMakeLists.txt
+  '';
+
+  postConfigure = ''
+    mkdir -p lib/Basic
+    echo "$VCSVersion" > lib/Basic/VCSVersion.inc
+  '';
+
+  meta = with stdenv.lib; {
+    description = "ROCm fork of the clang C/C++/Objective-C/Objective-C++ LLVM compiler frontend";
+    homepage = "https://llvm.org/";
+    license = with licenses; [ ncsa ];
+    maintainers = with maintainers; [ danieldk ];
+    platforms = platforms.linux;
+  };
+}