print errno when reporting a system call error

diff --git a/Makefile b/Makefile
index c739023e4e5683f8588abf57a066df707b81ebfe..e35542e63181144397053bf7932fad2cf97027bb 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -817,6 +817,7 @@ LIB_OBJS += reflog-walk.o
 LIB_OBJS += refs.o
 LIB_OBJS += refs/files-backend.o
 LIB_OBJS += refs/iterator.o
+LIB_OBJS += refs/ref-cache.o
 LIB_OBJS += ref-filter.o
 LIB_OBJS += remote.o
 LIB_OBJS += replace_object.o