1 files changed, 2 insertions, 0 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 3cf932dc4..66acc2278 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -212,6 +212,8 @@ char *xreadlink(const char *path);
 char *concat_path_file(const char *path, const char *filename);
 char *last_char_is(const char *s, int c);
 
+extern long arith (const char *startbuf);
+
 typedef struct file_headers_s {
         char *name;
         char *link_name;