ext/dtext/extconf.rb in dtext_rb-1.3.0 vs ext/dtext/extconf.rb in dtext_rb-1.4.0

@@ -1,7 +1,7 @@
 require "mkmf"
 
-$CFLAGS << " -std=c99"
+$CFLAGS << " -std=c99 -D_GNU_SOURCE #{ENV["CFLAGS"]}"
 
 pkg_config "glib-2.0"
 
 have_library "glib-2.0"
 have_header "glib.h"