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-rw-r--r--nixpkgs/pkgs/development/compilers/llvm/12/clang/default.nix23
1 files changed, 16 insertions, 7 deletions
diff --git a/nixpkgs/pkgs/development/compilers/llvm/12/clang/default.nix b/nixpkgs/pkgs/development/compilers/llvm/12/clang/default.nix
index ab329e3d85d7..3d1106dbc52c 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/12/clang/default.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/12/clang/default.nix
@@ -1,4 +1,5 @@
-{ lib, stdenv, llvm_meta, fetch, cmake, libxml2, llvm, version, clang-tools-extra_src, python3, lld
+{ lib, stdenv, llvm_meta, fetch, cmake, libxml2, libllvm, version, clang-tools-extra_src, python3
+, buildLlvmTools
 , fixDarwinDylibNames
 , enableManpages ? false
 }:
@@ -18,26 +19,31 @@ let
       unpackFile ${clang-tools-extra_src}
     '';
 
-    nativeBuildInputs = [ cmake python3 lld ]
+    nativeBuildInputs = [ cmake python3 ]
       ++ lib.optional enableManpages python3.pkgs.sphinx
       ++ lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
-    buildInputs = [ libxml2 llvm ];
+    buildInputs = [ libxml2 libllvm ];
 
     cmakeFlags = [
       "-DCMAKE_CXX_FLAGS=-std=c++14"
       "-DCLANGD_BUILD_XPC=OFF"
+      "-DLLVM_CONFIG_PATH=${libllvm.dev}/bin/llvm-config${lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) "-native"}"
     ] ++ lib.optionals enableManpages [
       "-DCLANG_INCLUDE_DOCS=ON"
       "-DLLVM_ENABLE_SPHINX=ON"
       "-DSPHINX_OUTPUT_MAN=ON"
       "-DSPHINX_OUTPUT_HTML=OFF"
       "-DSPHINX_WARNINGS_AS_ERRORS=OFF"
+    ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
+      "-DLLVM_TABLEGEN_EXE=${buildLlvmTools.llvm}/bin/llvm-tblgen"
+      "-DCLANG_TABLEGEN=${buildLlvmTools.libclang.dev}/bin/clang-tblgen"
     ];
 
     patches = [
       ./purity.patch
       # https://reviews.llvm.org/D51899
+      ./gnu-install-dirs.patch
     ];
 
     postPatch = ''
@@ -51,12 +57,12 @@ let
       sed -i -e 's/lgcc_s/lgcc_eh/' lib/Driver/ToolChains/*.cpp
     '';
 
-    outputs = [ "out" "lib" "python" ];
+    outputs = [ "out" "lib" "dev" "python" ];
 
     # Clang expects to find LLVMgold in its own prefix
     postInstall = ''
-      if [ -e ${llvm}/lib/LLVMgold.so ]; then
-        ln -sv ${llvm}/lib/LLVMgold.so $out/lib
+      if [ -e ${libllvm.lib}/lib/LLVMgold.so ]; then
+        ln -sv ${libllvm.lib}/lib/LLVMgold.so $lib/lib
       fi
 
       ln -sv $out/bin/clang $out/bin/cpp
@@ -75,11 +81,14 @@ let
       fi
       mv $out/share/clang/*.py $python/share/clang
       rm $out/bin/c-index-test
+
+      mkdir -p $dev/bin
+      cp bin/clang-tblgen $dev/bin
     '';
 
     passthru = {
       isClang = true;
-      inherit llvm;
+      inherit libllvm;
     };
 
     meta = llvm_meta // {