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-rw-r--r--ext/I18N/Langinfo/Langinfo.xs1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/I18N/Langinfo/Langinfo.xs b/ext/I18N/Langinfo/Langinfo.xs
index 39faaf1a3c..c1da9818c1 100644
--- a/ext/I18N/Langinfo/Langinfo.xs
+++ b/ext/I18N/Langinfo/Langinfo.xs
@@ -3,6 +3,7 @@
#include "XSUB.h"
#ifdef I_LANGINFO
+# define __USE_GNU 1 /* Enables YESSTR, otherwise only __YESSTR. */
# include <langinfo.h>
#endif