Bug#907306: configure: error: gdk-pixbuf-query-loaders not found in path

[Simon McVittie]

On Sun, 26 Aug 2018 at 14:20:14 +0200, Michael Biebl wrote:
> On 8/26/18 12:50, Simon McVittie wrote:
> > Looking at librsvg, it seems we might be able to reinstate
> > gdk-pixbuf-query-loaders in libgdk-pixbuf2.0-dev but rename it to
> > $(DEB_HOST_ARCH)-gdk-pixbuf-query-loaders, and then change librsvg to
> > use AC_CHECK_TOOL instead of AC_PATH_PROGS; or install
> > gdk-pixbuf-query-loaders in /usr/lib/$(DEB_HOST_MULTIARCH) instead of
> > /usr/bin, then add that to PATH when building librsvg. That would mean
> > we can't cross-compile librsvg on a build machine that can't run host
> > binaries, but we'd still be able to cross-compile other gdk-pixbuf users.
> 
> Why exactly so we need gdk-pixbuf-query-loaders?
> Looking at
> https://salsa.debian.org/gnome-team/librsvg/blob/debian/master/gdk-pixbuf-loader/Makefile.am
> 
> it seems we require it for two cases:
> a/ It's used in the rsvg-loader test
> b/ It's called during make install
> 
> b/ is handled by triggers in Debian and already conditionalized by DESTDIR
> 
> So maybe an alternative could be to simply skip building the rsvg-loader
> test.

I think I have a patch that works for (a) without modifying gdk-pixbuf:
we already install gdk-pixbuf-query-loaders in
/usr/lib/$(DEB_HOST_MULTIARCH)/gdk-pixbuf-2.0, so I just need to set
GDK_PIXBUF_QUERYLOADERS. Testing now.

    smcv