--- a/Makefile
+++ b/Makefile
@@ -294,6 +294,7 @@
   -Wno-missing-braces \
   -Wno-ignored-pragmas \
   -Wno-unused-but-set-variable \
+  -Wno-unused-command-line-argument \
   -Wno-unknown-warning-option
 
 # Configure support for threads.