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-rw-r--r--lib/util/randsysrandom.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/util/randsysrandom.c b/lib/util/randsysrandom.c
index 97a1376e..3e38b0ae 100644
--- a/lib/util/randsysrandom.c
+++ b/lib/util/randsysrandom.c
@@ -1,3 +1,9 @@
+#define _DEFAULT_SOURCE /* New name for SVID & BSD source defines */
+#define _XOPEN_SOURCE 500  /* Make sure random() is in stdlib.h */
+#define _BSD_SOURCE  /* Make sure random() is in stdlib.h */
+
+#include <stdlib.h>
+
 #include "netpbm/rand.h"
 
 static void