Re: ORBit 0.5.8 Cross-Compile problems...
- From: Dan Kegel <dank ixiacom com>
- To: Paul Eggert <eggert twinsun com>
- Cc: dank kegel com, dahaverk rockwellcollins com, michael ximian com,dank alumni caltech edu, orbit-list gnome org, dimator dimator org,autoconf gnu org
- Subject: Re: ORBit 0.5.8 Cross-Compile problems...
- Date: Mon, 01 Apr 2002 10:58:16 -0800
Paul Eggert wrote:
> > firstname.lastname@example.org wrote:
> > > I did have the thought that it would be very usefull to have the
> > > configure tools recognize that you are doing a cross compile say
> > > to PPC and have it set up default "sizes" etc based on known PPC
> > > settings.
> The latest Autoconf can calculate the sizes of C objects even when
> cross-compiling. It does so without using AC_TRY_RUN. So this much
> at least should work without any special help.
Indeed. This is a real improvement.
> > Many's the time I've tried to install a package, run into
> > flagrant use of AC_TRY_RUN, and gotten out my voodoo doll
> > to poke pins into the head of whoever wrote the configure.in
> > that used AC_TRY_RUN.
> Now, now, it's OK to use AC_TRY_RUN if there's a reasonable fallback
> when not cross-compiling. (Please don't stick pins into my doll's
> head! :-)
So YOU'RE the one! :-) I dare you to show me a reasonable use of
AC_TRY_RUN that is correct both for self-hosted and for cross
(Defaults that work for 'most' targets don't qualify.)
> > 4. Some people with favorable envirnments have modified AC_TRY_RUN
> > to actually run code on the target;
> I seem to recall somewhat submitting a patch recently along those lines.
Has it been accepted yet? That would be great.
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