Don't build/install clang++ in CLANG_IS_PRODUCTION build mode yet.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93732 91177308-0d34-0410-b5e6-96231b3b80d8

tools/driver/Makefile

@@ -9,7 +9,9 @@
 LEVEL = ../../../..
 
 TOOLNAME = clang
+ifndef CLANG_IS_PRODUCTION
 TOOLALIAS = clang++
+endif
 CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
 CXXFLAGS = -fno-rtti