Thanks,
I reread the ar manpage again. So, with the ar option U, the timestamp will be taken into account. make needs the timestamp to tell if prerequisites are newer than target or not, when the archive(member) syntax a(m) is used.
Thanks,
I reread the ar manpage again. So, with the ar option U, the timestamp will be taken into account. make needs the timestamp to tell if prerequisites are newer than target or not, when the archive(member) syntax a(m) is used.