gnome-keyring fails to build on machines without GUI, when it could
On systems without graphics support, then no GTK+ installed, it happens, at least when using gentoo distribution, that gcr-base library is installed but not gcr library. gnome-keyring configure.ac inconditionnaly depends on gcr. My proposal is then to add a '--disable-gtk' option in order to use only gcr-base when GKT+, thus gcr, is not present. In fact, I actually doubt that gcr library is required in any case as the package is able to compile using gcr/gcr-base.h header instead of gcr/gcr.h
The attached patch (standard unified diff) makes me able to use gnome-keyring tool on machines without any GUI.