Mark the variable declarations in .h files as extern

diff --git a/cache.h b/cache.h
index 1dba4057031dc8d9421ec8a388b36ee9c3494077..f8329aedfdef678b71d2fa07783b92f9a9aa079e 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -96,8 +96,8 @@ static inline unsigned int create_ce_mode(unsigned int mode)
 
 #define cache_entry_size(len) ((offsetof(struct cache_entry,name) + (len) + 8) & ~7)
 
-struct cache_entry **active_cache;
-unsigned int active_nr, active_alloc, active_cache_changed;
+extern struct cache_entry **active_cache;
+extern unsigned int active_nr, active_alloc, active_cache_changed;
 
 #define DB_ENVIRONMENT "SHA1_FILE_DIRECTORY"
 #define DEFAULT_DB_ENVIRONMENT ".git/objects"