[libclang] Fix autoconf library dependencies for tooling support

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159490 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/Makefile b/tools/libclang/Makefile
index 8d0a614..3f6774b 100644
--- a/tools/libclang/Makefile
+++ b/tools/libclang/Makefile
@@ -19,7 +19,7 @@
 USEDLIBS = clangARCMigrate.a clangRewrite.a clangFrontend.a clangDriver.a \
      clangSerialization.a \
 		 clangParse.a clangSema.a clangEdit.a clangAnalysis.a \
-		 clangAST.a clangLex.a clangBasic.a
+		 clangAST.a clangLex.a clangTooling.a clangBasic.a
 
 include $(CLANG_LEVEL)/Makefile