Clobber现有文件与ar

ar

+ ar rcs /tmp/libcpfs.a.3nbsv /tmp/cpfs.c.ERGsn /tmp/log.c.1lk6G
ar: /tmp/libcpfs.a.3nbsv: File format not recognized

mktemp

rm "$libcpfs_a" && ar rcs "${libcpfs_a}" ${libcpfs_objs[*]}

ar

rm -f $file
ar rcs $file foo.c bar.c