bug#12993: Wrong icon for Cygw32-Emacs

[Ken Brown]

On 4/7/2013 10:39 PM, Eli Zaretskii wrote:
> > Date: Sun, 07 Apr 2013 18:44:36 -0400
> > From: Ken Brown <kbrown@cornell.edu>
> > CC: dancol@dancol.org, 12993@debbugs.gnu.org
> >
> > On 4/7/2013 2:48 PM, Eli Zaretskii wrote:
> > > > Date: Sun, 07 Apr 2013 14:11:48 -0400
> > > > From: Ken Brown <kbrown@cornell.edu>
> > > > Cc: 12993@debbugs.gnu.org, Angelo Graziosi <angelo.graziosi@alice.it>
> > > >
> > > > At some point could you update this fix so that it works on 64-bit
> > > > Cygwin also?
> > >
> > > What are the problems that prevent this from working with 64-bit
> > > Cygwin?  I presume there's a 64-bit windres.exe, and nt/emacs.rc is
> > > already set up to cater to 64-bit builds.  What am I missing?
> >
> > The problem is that the build fails.  There's no error message
> > explaining the failure, just "Makefile:785: recipe for target
> > `bootstrap-emacs.exe' failed".  But the build succeeds if I remove the
> > attempt to compile Windows resources:
>
> What is on line 785 of Makefile?
>
> > I know nothing about Windows resources
>
> They are just a fancy kind of object file produced from a fancy kind
> of source (emacs.rc in this case).

I tried again on a different computer, after updating to the current 
emacs trunk, and this time I got a meaningful error message:

/usr/lib/gcc/x86_64-pc-cygwin/4.8.0/../../../../x86_64-pc-cygwin/bin/ld: 
i386 architecture of input file `emacs.res' is incompatible with 
i386:x86-64 output

This made me think that the problem was the "pe-i386" in the following 
line of configure.ac:

  W32_RES_LINK="-Wl,-bpe-i386 -Wl,emacs.res"

I made several guesses as to what should be there (including 
"pe-x86-64", which seemed the most likely), but I kept getting the same 
error message.  Is it possible that the problem is in nt/emacs.rc after all?

Ken