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Re: Make special accommodation for cl in _AC_PROG_CC_G
From: |
Braden McDaniel |
Subject: |
Re: Make special accommodation for cl in _AC_PROG_CC_G |
Date: |
18 Jul 2003 01:42:12 -0400 |
On Fri, 2003-07-18 at 00:10, Paul Eggert wrote:
> Braden McDaniel <address@hidden> writes:
>
> > > Maybe some other strategy would be more general. Like checking that
> > > adding -g both works and doesn't output any extra messages, or
> > > something like that.
> >
> > I think finding out what "extra" is would be extremely difficult, if not
> > impossible, to do in a general way.
>
> No, it's easy.
>
> 1. Compile without -g. Save the output. E.g., without_g=`cc -g foo.c`.
> 2. Compile with -g. Save the output. E.g., with_g=`cc foo.c`.
> 3. Compare the two. E.g., if test "x$without_g" = "x$with_g"; then ....
That makes the assumption that a compiler won't have normal informative
output that differs depending on the presence of -g. That's probably a
reasonable assumption.
So is that the test you'd prefer to have in a patch?
--
Braden McDaniel e-mail: <address@hidden>
<http://endoframe.com> Jabber: <address@hidden>