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Re: [bug-gnulib] ensure that generated files are read-only

From: Bruno Haible
Subject: Re: [bug-gnulib] ensure that generated files are read-only
Date: Thu, 7 Sep 2006 20:28:48 +0200
User-agent: KMail/1.9.1

Paul Eggert wrote:
> Here's another thought: how about this even-shorter version instead?
> alloca.h: alloca_.h
>       $(LN_F_S) $(srcdir)/alloca_.h $@
> where $(LN_FS) expands to "ln -fs" in the typical case, or to
> "rm -f $@ && cp" on hosts where "ln -fs" doesn't work (e.g., Solaris 9
> and earlier).

It depends not only on the host but also on the file system. Even on
Linux and Solaris, "ln -s" doesn't work on vfat and smb filesystems.

I doubt that saving one Makefile line here is worth yet another autoconf
test and possibly trouble on HP-UX. I'm satisfied with the "cp" and
"mv" commands: it works everywhere and doesn't need an autoconf test.


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