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Diffstat (limited to 'pjlib/src/pj/os_timestamp_posix.c')
-rw-r--r--pjlib/src/pj/os_timestamp_posix.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/pjlib/src/pj/os_timestamp_posix.c b/pjlib/src/pj/os_timestamp_posix.c
index eec6ed1f..28805150 100644
--- a/pjlib/src/pj/os_timestamp_posix.c
+++ b/pjlib/src/pj/os_timestamp_posix.c
@@ -125,7 +125,9 @@ PJ_DEF(pj_status_t) pj_get_timestamp_freq(pj_timestamp *freq)
#include <mach/clock.h>
#include <errno.h>
-#define NSEC_PER_SEC 1000000000
+#ifndef NSEC_PER_SEC
+# define NSEC_PER_SEC 1000000000
+#endif
PJ_DEF(pj_status_t) pj_get_timestamp(pj_timestamp *ts)
{