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-rw-r--r--libswscale/utils.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/libswscale/utils.c b/libswscale/utils.c
index 6b17955f54..786774f241 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -1098,7 +1098,11 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
}
}
-#define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS)
+#if HAVE_MMAP && HAVE_MPROTECT && defined(MAP_ANONYMOUS)
+#define USE_MMAP 1
+#else
+#define USE_MMAP 0
+#endif
/* precalculate horizontal scaler filter coefficients */
{