1 files changed, 1 insertions, 0 deletions
diff --git a/cache.h b/cache.h
index d433d46f23..eee5fc9f8d 100644
--- a/cache.h
+++ b/cache.h
@@ -176,6 +176,7 @@ extern int commit_lock_file(struct lock_file *);
 extern void rollback_lock_file(struct lock_file *);
 
 /* Environment bits from configuration mechanism */
+extern int use_legacy_headers;
 extern int trust_executable_bit;
 extern int assume_unchanged;
 extern int prefer_symlink_refs;