Add Clang lib clangRewriteFrontend to FindClang.cmake

Add LLVM_LIBS which represents all LLVM libs to FindLLVM.cmake

cmake/modules/FindClang.cmake

@@ -53,6 +53,7 @@ if (LLVM_FOUND AND LLVM_LIBRARY_DIR)
   FIND_AND_ADD_CLANG_LIB(clangSema)
   FIND_AND_ADD_CLANG_LIB(clangChecker)
   FIND_AND_ADD_CLANG_LIB(clangAnalysis)
+  FIND_AND_ADD_CLANG_LIB(clangRewriteFrontend)
   FIND_AND_ADD_CLANG_LIB(clangRewrite)
   FIND_AND_ADD_CLANG_LIB(clangAST)
   FIND_AND_ADD_CLANG_LIB(clangParse)

cmake/modules/FindLLVM.cmake

@@ -6,6 +6,7 @@
 #  LLVM_CFLAGS      - llvm compiler flags
 #  LLVM_LFLAGS      - llvm linker flags
 #  LLVM_MODULE_LIBS - list of llvm libs for working with modules.
+#  LLVM_LIBS        - list of all llvm libs.
 #  LLVM_FOUND       - True if llvm found.
 #  LLVM_VERSION     - Version string ("llvm-config --version")
 #
@@ -102,6 +103,12 @@ if (LLVM_FOUND)
     OUTPUT_VARIABLE LLVM_MODULE_LIBS
     OUTPUT_STRIP_TRAILING_WHITESPACE
   )
+
+  execute_process(
+    COMMAND ${LLVM_CONFIG_EXECUTABLE} --libs
+    OUTPUT_VARIABLE LLVM_LIBS
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+  )
 endif()
 
 if (LLVM_FIND_REQUIRED AND NOT LLVM_FOUND)