gdate.c:2497:7: error: format not a string literal

编译类openwrt sdk时，出现个gdate.c的错误，与编译器版本有关，打个patch就好

问题：

gdate.c: In function 'g_date_strftime':
gdate.c:2497:7: error: format not a string literal, format string not checked [-Werror=format-nonliteral]
      tmplen = strftime (tmpbuf, tmpbufsize, locale_format, &tm);
      ^~~~~~
cc1: some warnings being treated as errors
make[10]: *** [Makefile:1386: libglib_2_0_la-gdate.lo] Error 1
make[10]: Leaving directory '/opt/water/tina-sdk/out/mandolin-perf1/compile_dir/host/pkg-config-0.29/glib/glib'

解决：

单独改源码方式不好，下次重新编译有可能又要重新改， 所以新建个patch一劳永逸

tools/pkg-config/patches/001-glib-gdate-suppress-string-format-literal-warning.patch

内容如下：

--- a/glib/glib/gdate.c
+++ b/glib/glib/gdate.c
@@ -2439,6 +2439,9 @@ win32_strftime_helper (const GDate *d,
*
* Returns: number of characters written to the buffer, or 0 the buffer was too small
*/
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
+
gsize
g_date_strftime (gchar *s,
gsize        slen,
@@ -2549,3 +2552,5 @@ g_date_strftime (gchar *s,
return retval;
#endif
}
+
+#pragma GCC diagnostic pop