repack: remove 'prepare_pack_objects' from the builtin

Now that the 'prepare_pack_objects' function no longer refers to
external, static variables, move it out to repack.h as generic
functionality.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/repack.h b/repack.h
index 12632d7fec..3f7ec20735 100644
--- a/repack.h
+++ b/repack.h
@@ -21,6 +21,11 @@ struct pack_objects_args {
 
 #define PACK_OBJECTS_ARGS_INIT { .delta_base_offset = 1 }
 
+struct child_process;
+
+void prepare_pack_objects(struct child_process *cmd,
+			  const struct pack_objects_args *args,
+			  const char *out);
 void pack_objects_args_release(struct pack_objects_args *args);
 
 #endif /* REPACK_H */