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-rw-r--r--src/util.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/util.c b/src/util.c
index 526bf9b..7980b74 100644
--- a/src/util.c
+++ b/src/util.c
@@ -14,8 +14,12 @@
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#define _POSIX_SOURCE 1 /* for wordexp, fileno */
-#define _BSD_SOURCE 1 /* for realpath, symlink */
+#define _POSIX_C_SOURCE 1 /* for wordexp, fileno */
+#define _BSD_SOURCE 1 /* for realpath, symlink */
+
+#ifdef __APPLE__
+# define _DARWIN_C_SOURCE 1 /* for flock */
+#endif
#include <assert.h>
#include <errno.h>