On Mon, Feb 4, 2019 at 5:44 PM Mamoru TASAKA <mtasaka@fedoraproject.org> wrote:
Guido Aulisi wrote on 2019/02/03 20:31:
> Hi,
> I'm trying to debug a FTBFS in rawhide:
>
> https://koji.fedoraproject.org/koji/taskinfo?taskID=32412101
>
> Apparently it fails because of library ordering, but it works in f29.
> g_object_unref is defined in gobject-2.0 and it gets surely added by
> the 'pkgconf  --libs cairo pangocairo pango' command.
>
> Did anything about gobject or glib change in rawhide recently?
>
> Thank you for any help.
>
> Guido
>
Apparently this is because rawhide pango.pc does not add -lglib-2.0
when called with pkgconf --libs:

F-29
$ rpm -q pango
pango-1.42.4-2.fc29.x86_64
$ pkgconf --libs pango
-lpango-1.0 -lgobject-2.0 -lglib-2.0

F-30
$ rpm -q pango
pango-1.43.0-1.fc30.x86_64
$ pkgconf --libs pango
-lpango-1.0

pango-1.43.0-1.fc30.x86_64 pango.pc shows:
----------------------------------
Name: Pango
Description: Internationalized text handling
Version: 1.43.0
Requires.private: glib-2.0 >=  2.38.0, gobject-2.0 >=  2.38.0, fribidi >=  0.19.7, libthai >=  0.1.9, harfbuzz >=  1.4.2, fontconfig >=  2.11.91, freetype2, xrender, xft >=  2.0.0, cairo >=  1.12.10
Libs: -L${libdir} -lpango-1.0
Libs.private: -lm
----------------------------------
So -lglib-2.0 is moved to Requires.private.

I guess this is due to this commit:
https://gitlab.gnome.org/GNOME/pango/commit/86855b6a458fd9b82d246f723a7e3c9cdb37a8a0
It seems to be doing some refactoring (with adding some fallback), and
"requires: gobject_dep," line is deleted.

Currently I am not sure if it is intentional or accidental.

I think this commit https://gitlab.gnome.org/GNOME/pango/commit/d0cb6be7431d1a3c711bd45bcf05b34601604037 will revert it back but we need to wait for next upstream pango release.

Parag