Allow customization for the producer information in the debug output.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83659 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/Makefile b/lib/CodeGen/Makefile
index e716fe7..108490b 100644
--- a/lib/CodeGen/Makefile
+++ b/lib/CodeGen/Makefile
@@ -18,6 +18,9 @@
 CXXFLAGS = -fno-rtti
 
 CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
+ifdef CLANG_VENDOR
+CPPFLAGS += -DCLANG_VENDOR='"$(CLANG_VENDOR) "'
+endif
 
 include $(LEVEL)/Makefile.common