gentoo-overlay/app-doc/doxygen/files/doxygen-1.8.15-llvm7.patch

--- a/src/CMakeLists.txt	2019-04-04 06:51:41.509647160 +0200
+++ b/src/CMakeLists.txt	2019-04-04 06:52:08.413646804 +0200
@@ -263,7 +263,7 @@
     add_definitions(${LLVM_DEFINITIONS})
     llvm_map_components_to_libnames(llvm_libs support core option)
     target_compile_definitions(doxygen PRIVATE ${LLVM_DEFINITIONS})
-    set(CLANG_LIBS libclang clangTooling ${llvm_libs})
+    set(CLANG_LIBS libclang clangTooling clangBasic clangLex ${llvm_libs})
 endif()
 
 target_link_libraries(doxygen