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-rw-r--r--ax25ipd/ax25ipd.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/ax25ipd/ax25ipd.h b/ax25ipd/ax25ipd.h
index fac25fc..d88173a 100644
--- a/ax25ipd/ax25ipd.h
+++ b/ax25ipd/ax25ipd.h
@@ -54,6 +54,7 @@
#include <setjmp.h>
#include <signal.h>
#include <stdio.h>
+#define __USE_XOPEN
#include <stdlib.h>
#include <string.h>
#include <unistd.h>