Re: POSIXLY_CORRECT not correctly unset in getopt.m4?

[Eric Blake]

On 09/07/2010 02:34 PM, Ralf Wildenhues wrote:
> Hi Eric,
>
> * Eric Blake wrote on Tue, Sep 07, 2010 at 10:13:49PM CEST:
> > POSIX guarantees that
> > awk supplies ENVIRON; are we assuming that this is reasonable
> > portable to all the old-and-crusty vendor implementations out there,
> > since the autoconf manual doesn't state otherwise?
>
> No.  /bin/awk on Solaris 10 doesn't know ENVIRON, /usr/xpg4/bin/awk
> and /bin/nawk do.

More precisely, does AC_PROG_AWK guarantee us an awk that will 
understand ENVIRON?  If so, then gnulib can use that; if not, then 
gnulib needs to use env (in spite of its potential for false positives); 
either way, the answer to this question may help us decide the issue of 
whether GNU Coding Standards should permit env.

Meanwhile, we should document the portability of awk vs. ENVIRON in the 
autoconf manual.

--
Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org