[cairo] Issues with Pango on OSX

[Alexander Shulgin]

On Thu, Jul 8, 2010 at 18:38, Travis Griggs <tgriggs at cincom.com> wrote:
>
> The reason I think that, is that when I first starting making calls into it
> from my program, I start seeing lots of errors on stderr of the nature:
>
> (process:82410): GLib-GObject-CRITICAL **: gtype.c:2711: You forgot to call
> g_type_init()
> (process:82410): GLib-GObject-WARNING **: invalid cast from `PangoModule' to
> `<invalid>'
> (process:82410): GLib-GObject-CRITICAL **: gtype.c:2766: You forgot to call
> g_type_init()
> (process:82410): GLib-GObject-CRITICAL **: g_object_new: assertion
> `G_TYPE_IS_OBJECT (object_type)' failed
> (process:82410): Pango-WARNING **: Failed to load Pango module
> '/Users/travis/CairoPixmanBuild/lib/pango/1.6.0/modules/pango-basic-atsui.so'
> for id 'BasicScriptEngineATSUI'
> (process:82410): GLib-GObject-WARNING **: cannot register existing type
> `PangoEngine'
> (process:82410): GLib-GObject-CRITICAL **: g_type_register_static: assertion
> `parent_type > 0' failed
> (process:82410): GLib-GObject-CRITICAL **: gtype.c:2711: You forgot to call
> g_type_init()
> (process:82410): GLib-GObject-WARNING **: invalid cast from `PangoModule' to
> `<invalid>'
> (process:82410): GLib-GObject-CRITICAL **: gtype.c:2766: You forgot to call
> g_type_init()
> (process:82410): GLib-GObject-WARNING **: plugin '(unknown)' failed to
> register type '(null)'
>
> None of that looks very good at all. In particular 5th one down, the one
> where it can't load the atsui module. The file is indeed at that location.
> Any idea what gives here? I do not build cairo with xlib or ft/fc, and when
> Pango runs it's configure, it says the only backend it is building is
> pangocairo.
>
> Thanks for any help you can give on why I'm seeing these errors.

I have no clue about what's causing gtype errors, but with failing .so
you might consider this:

1. On OS X it should be actually .dylib, not .so

2. You can use `otool -L <filename>.dylib' to inspect library
dependencies.  Some of them missing, then this is causing your pango
module load error.

I've used install_name_tool on OS X to break cairo and some other libs
(no pango among them) free of absolute path dependencies.  If you can
show what commands you used, I think I'll be able to pinpoint the
problem (if it is at that stage).

--
Alex