bug#21110: 25.0.50; Images viewed with Image[Imagemagick] mode are garbled

[Eli Zaretskii <eliz@gnu.org>]

> Date: Fri, 24 Jul 2015 13:18:49 +0100
> From: Robert Marshall <robert@capuchin.co.uk>
> Cc: 21110@debbugs.gnu.org
> 
>  > If you can afford one more test, perhaps try building with Cairo, but
>  > without Imagemagick (and with the rest of image support libraries).
>  > The Cairo build makes quite a bit of difference in image.c, but only
>  > one of them is related to the Imagemagick part, so I think it's
>  > important to understand whether this issue with Cairo is specific to
>  > Imagemagick or to images in general.
>  > 
> I did a
> 
> ./configure --without-imagemagick --with-cairo
> 
> and build and with that version graphic files are no longer garbled

So the final diagnosis is that the problem is caused by the
combination of Cairo and Imagemagick.  Thanks.

> (It would be good IMHO if the INSTALL file mentioned the
> --without-imagemagick option alongside the --without-jpeg options
> rather than my having to dig through the configure script)

I added that, thanks for pointing it out.