Following up on bug #249748, I discovered more build failures with gucharmap 2.24. This is because there is some calls to gucharmap wrapped in #ifdef TOMOE_GTK_HAS_GUCHARMAP #endif. With current portage ebuilds, scim-tomoe depends on gucharmap so it needs to be fixed in its RDEPEND.
ping ?
Fixed in 0.6.0-r2 along with deps review.