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-rw-r--r--libguile/fports.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/libguile/fports.c b/libguile/fports.c
index 683c25bde..97dadded5 100644
--- a/libguile/fports.c
+++ b/libguile/fports.c
@@ -20,6 +20,7 @@
#define _LARGEFILE64_SOURCE /* ask for stat64 etc */
+#define _GNU_SOURCE /* ask for LONG_LONG_MAX/LONG_LONG_MIN */
#ifdef HAVE_CONFIG_H
# include <config.h>