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-rw-r--r--libavformat/img2dec.c1
-rw-r--r--libavformat/udp.c1
-rw-r--r--libswscale/utils.c1
3 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c
index 16975792ee..0cbcf4a9dc 100644
--- a/libavformat/img2dec.c
+++ b/libavformat/img2dec.c
@@ -20,6 +20,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#define _DEFAULT_SOURCE
#define _BSD_SOURCE
#include <sys/stat.h>
#include "libavutil/avstring.h"
diff --git a/libavformat/udp.c b/libavformat/udp.c
index d40ea973fe..1bda5af297 100644
--- a/libavformat/udp.c
+++ b/libavformat/udp.c
@@ -24,6 +24,7 @@
* UDP protocol
*/
+#define _DEFAULT_SOURCE
#define _BSD_SOURCE /* Needed for using struct ip_mreq with recent glibc */
#include "avformat.h"
diff --git a/libswscale/utils.c b/libswscale/utils.c
index eb1c940371..651b07a0ff 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -20,6 +20,7 @@
#include "config.h"
+#define _DEFAULT_SOURCE
#define _SVID_SOURCE // needed for MAP_ANONYMOUS
#define _DARWIN_C_SOURCE // needed for MAP_ANON
#include <inttypes.h>