for vsnprintf() FreeBSD wants __ISO_C_VISIBLE >= 1999

Sad, C99 did not actually standardize the defines to invoke
the standard.

1 files changed, 2 insertions, 0 deletions

diff --git a/gpsctl.c b/gpsctl.c
index d7f59e56..6f392f97 100644
--- a/gpsctl.c
+++ b/gpsctl.c
@@ -12,6 +12,8 @@
 /* strlcpy() needs _DARWIN_C_SOURCE */
 #define _DARWIN_C_SOURCE
 
+/* for vsnprintf() FreeBSD wants __ISO_C_VISIBLE >= 1999 */
+#define __ISO_C_VISIBLE 1999
 
 #include <stdio.h>
 #include <stdlib.h>