diff -Nrup a/bcache.h b/bcache.h
--- a/bcache.h	2019-10-15 13:33:53.008004124 -0600
+++ b/bcache.h	2019-10-15 13:34:58.322638870 -0600
@@ -117,7 +117,7 @@ BITMASK(BDEV_STATE,		struct cache_sb, fl
 
 extern const uint64_t crc_table[];
 
-inline uint64_t crc64(const void *_data, size_t len)
+static inline uint64_t crc64(const void *_data, size_t len)
 {
         uint64_t crc = 0xFFFFFFFFFFFFFFFFULL;
         const unsigned char *data = _data;