openshadinglanguage: remove libclang as shared lib (#546530)

pkgs/by-name/op/openshadinglanguage/libclang-no-shared.patch

@@ -0,0 +1,24 @@
+diff --git a/src/cmake/modules/FindLLVM.cmake b/src/cmake/modules/FindLLVM.cmake
+index 56809dc3..b1a1ec1e 100644
+--- a/src/cmake/modules/FindLLVM.cmake
++++ b/src/cmake/modules/FindLLVM.cmake
+@@ -103,19 +103,6 @@ if (NOT LLVM_LIBRARY)
+     set (LLVM_LIBRARY "${LLVM_LIBRARIES}")
+ endif ()
+ 
+-execute_process (COMMAND ${LLVM_CONFIG} --shared-mode
+-       OUTPUT_VARIABLE LLVM_SHARED_MODE
+-       OUTPUT_STRIP_TRAILING_WHITESPACE)
+-if (LLVM_SHARED_MODE STREQUAL "shared")
+-    find_library ( _CLANG_CPP_LIBRARY
+-                   NAMES "clang-cpp"
+-                   PATHS ${LLVM_LIB_DIR}
+-                   NO_DEFAULT_PATH)
+-    if (_CLANG_CPP_LIBRARY)
+-        list (APPEND CLANG_LIBRARIES ${_CLANG_CPP_LIBRARY})
+-    endif ()
+-endif ()
+-
+ foreach (COMPONENT clangFrontend clangDriver clangSerialization
+                    clangParse clangSema clangAnalysis clangAST
+                    clangASTMatchers clangEdit clangLex

pkgs/by-name/op/openshadinglanguage/package.nix

@@ -31,6 +31,8 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-edtYKN2obQexQtclrIUflm3upc14MhHQ7eLvit5Hqq0=";
   };
 
+  patches = [ ./libclang-no-shared.patch ];
+
   cmakeFlags = [
     (lib.cmakeBool "LLVM_STATIC" true)
     (lib.cmakeBool "USE_QT" false)
@@ -38,7 +40,6 @@ stdenv.mkDerivation (finalAttrs: {
     # Build system implies llvm-config and llvm-as are in the same directory.
     # Override defaults.
     (lib.cmakeFeature "LLVM_BC_GENERATOR" "${clang}/bin/clang++")
-    (lib.cmakeFeature "LLVM_CONFIG" "${llvm.dev}/bin/llvm-config")
     (lib.cmakeFeature "LLVM_DIRECTORY" "${llvm}")
   ];
 
@@ -53,7 +54,6 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeBuildInputs = [
     bison
-    clang
     cmake
     flex
   ];