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-rw-r--r--libavutil/cpu.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libavutil/cpu.c b/libavutil/cpu.c
index a7e5f7f345..354d21e76f 100644
--- a/libavutil/cpu.c
+++ b/libavutil/cpu.c
@@ -180,6 +180,10 @@ int av_cpu_count(void)
#ifdef TEST
#include <stdio.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
#include "avstring.h"
#if !HAVE_GETOPT