bug#19111: 25.0.50; 32 bits temacs.exe is linked with wrong image-base when built on 64 bit Windows host

[Eli Zaretskii]

> From: Óscar Fuentes <ofv@wanadoo.es>
> Cc: 19111@debbugs.gnu.org
> Date: Wed, 19 Nov 2014 23:01:44 +0100
> 
> Óscar Fuentes <ofv@wanadoo.es> writes:
> 
> > There other places on `configure' that uses the contents of $canonical
> > for deciding if its creating an 32 or 64 bits MinGW build.
> 
> Opinions?
> 
> diff --git a/configure.ac b/configure.ac
> index 5d71c2f..f286246 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -665,8 +665,8 @@ case "${canonical}" in
>  
>    # MinGW64
>    x86_64-*-* )
> -    case "${canonical}" in
> -      *-mingw* )
> +    case "${MSYSTEM}" in
> +      MINGW64 )
>               opsys=mingw32

I don't want to special-case MinGW builds like that.  The whole point
of using MSYS was to bring the Windows builds as close to Posix ones
as possible.

As I wrote elsewhere, using --hos/--build in the rare case we are
discussing should be "good enough", if we document it.