1 files changed, 1 insertions, 0 deletions

diff --git a/coreutils/cmp.c b/coreutils/cmp.c
index 71007eac1..0aebd4b4d 100644
--- a/coreutils/cmp.c
+++ b/coreutils/cmp.c
@@ -42,6 +42,7 @@ static const char opt_chars[] = "sl";
 #define CMP_OPT_s (1<<0)
 #define CMP_OPT_l (1<<1)
 
+int cmp_main(int argc, char **argv);
 int cmp_main(int argc, char **argv)
 {
         FILE *fp1, *fp2, *outfile = stdout;