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-rw-r--r--lib/libc/gen/feature_present.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/libc/gen/feature_present.c b/lib/libc/gen/feature_present.c
index 7a2c282..a230c8a 100644
--- a/lib/libc/gen/feature_present.c
+++ b/lib/libc/gen/feature_present.c
@@ -35,6 +35,7 @@ __FBSDID("$FreeBSD$");
#include <sys/sysctl.h>
#include <stdio.h>
#include <stdlib.h>
+#include <unistd.h>
/*
* Returns true if the named feature is present in the currently
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