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-rw-r--r--src/sm_genid.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/sm_genid.c b/src/sm_genid.c
index bcd10a6..cf2b51b 100644
--- a/src/sm_genid.c
+++ b/src/sm_genid.c
@@ -64,6 +64,7 @@ in this Software without prior written authorization from The Open Group.
# include <X11/Xthreads.h>
#endif
#include <stdio.h>
+#include <unistd.h>
#include <time.h>
#define Time_t time_t