--- lib/mlrisc-lib/Makefile.orig	2021-08-16 18:18:28 UTC
+++ lib/mlrisc-lib/Makefile
@@ -17,6 +17,9 @@ all: MLRISC/README.mlton
 MLRISC/README.mlton: MLRISC.tgz MLRISC.patch
 	$(RM) MLRISC
 	$(GZIP) -dc MLRISC.tgz | $(TAR) xf -
+	$(SED) -i.bak 's|gcc|$(CC)|g' \
+		MLRISC/c-call/varargs/interp/Makefile \
+		MLRISC/c-call/test/Makefile
 	$(FIND) MLRISC -name '._*' -prune -exec $(RM) '{}' ';'
 	$(CHMOD) -R a+r MLRISC
 	$(CHMOD) -R g-s MLRISC