File GNUMakefile-attribute-warning.patch of Package libs3-20200523

--- libs3-20200523/GNUmakefile.orig	2025-10-14 10:15:18.025614436 -0600
+++ libs3-20200523/GNUmakefile	2025-10-14 10:16:00.663836086 -0600
@@ -137,6 +137,7 @@
 endif
 
 CFLAGS += -Wall -Werror -Wshadow -Wextra -Wno-format-truncation -Wno-stringop-overflow  \
+	  -Werror-attribute-warning \
 		  -Iinc \
           $(CURL_CFLAGS) $(LIBXML2_CFLAGS) \
           -DLIBS3_VER_MAJOR=\"$(LIBS3_VER_MAJOR)\" \