--- a/source/tools/icuinfo/Makefile.in
+++ b/source/tools/icuinfo/Makefile.in
@@ -36,7 +36,7 @@ DEPS = $(OBJECTS:.o=.d)
 
 ICUINFO_OPTS=-i ../../data/out/build/$(ICUDATA_PLATFORM_NAME)
 
-CPPFLAGS+=  -DU_PLATFORM=\"@platform@\"  -DU_BUILD=\"@build@\" -DU_HOST=\"@host@\" -DU_CC=\"@CC@\" -DU_CXX=\"@CXX@\"
+CPPFLAGS+=  -DU_PLATFORM=\"@platform@\"  -DU_BUILD=\"@build@\" -DU_HOST=\"@host@\"
 # -DENABLE_RELEASE=@ENABLE_RELEASE@ -DENABLE_DEBUG=@ENABLE_DEBUG@ "