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-rw-r--r--src/wavegen.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/wavegen.c b/src/wavegen.c
index 3728920..740ed3c 100644
--- a/src/wavegen.c
+++ b/src/wavegen.c
@@ -17,6 +17,8 @@
along with this software. If not, see <http://www.gnu.org/licenses/>.
*/
+#define _GNU_SOURCE 1
+
#include <stdlib.h>
#include <stdio.h>
#include <string.h>