File libcaca-ruby_am_cflags.patch of Package libcaca

--- ruby/Makefile.am
+++ ruby/Makefile.am
@@ -9,7 +9,7 @@
 TESTS = test
 endif
 
-CFLAGS += -Wno-strict-prototypes -Wno-missing-prototypes
+AM_CFLAGS = -Wno-strict-prototypes -Wno-missing-prototypes
 
 cucul_la_CPPFLAGS = -I$(top_srcdir)/cucul $(RUBY_CFLAGS)
 cucul_la_SOURCES = cucul.c \