Revert "Revert "Only link clang libraries that are directly used (#473)" (#476)"

This reverts commit 0729d2e.

Author: wenju-he

CMakeLists.txt

@@ -264,37 +264,9 @@ if(USE_PREBUILT_LLVM OR CLANG_LINK_CLANG_DYLIB)
   list(APPEND OPENCL_CLANG_LINK_LIBS clang-cpp)
 else()
   list(APPEND OPENCL_CLANG_LINK_LIBS
-# The list of clang libraries is taken from clang makefile
-# (build/tools/clang/tools/driver/CMakeFiles/clang.dir/link.txt)
-# All duplicate libraries are there on purpose
     clangBasic
-    clangCodeGen
-    clangDriver
     clangFrontend
     clangFrontendTool
-    clangCodeGen
-    clangRewriteFrontend
-    clangARCMigrate
-    clangStaticAnalyzerFrontend
-    clangStaticAnalyzerCheckers
-    clangStaticAnalyzerCore
-    clangCrossTU
-    clangIndex
-    clangFrontend
-    clangDriver
-    clangParse
-    clangSerialization
-    clangSema
-    clangAnalysis
-    clangEdit
-    clangFormat
-    clangToolingInclusions
-    clangToolingCore
-    clangRewrite
-    clangASTMatchers
-    clangAST
-    clangLex
-    clangBasic
   )
 endif()