GQuark is not exported.

[GitHub issues - edited]

alsa-project/alsa-gobject issue #47 was edited from takaswie:

Although each library in alsa-gobject uses GQuark to propagate error information, the symbol of GQuark is not exported yet by symbol mapping file of each library:

 * src/ctl/alsactl.map
 * src/timer/alsatimer.map
 * src/seq/alsaseq.map
 * src/hwdep/alsahwdep.map
 * src/rawmidi/alsarawmidi.map

This issue brings inconvenience for [Rust bindings](https://github.com/alsa-project/alsa-gobject-rs) to implement [glib::error::ErrorDomain](https://gtk-rs.org/docs/glib/error/trait.ErrorDomain.html) for each GQuark. The glib::error::ErrorDomain trait requires domain function implementation to return GQuark itself, however it's not exported and unable to access.

Issue URL     : https://github.com/alsa-project/alsa-gobject/issues/47
Repository URL: https://github.com/alsa-project/alsa-gobject