Some distributions are renaming Glib/GIO utilities for multi-arch reasons so pkg-config variables have been added to find the correct name of a tool. GTK+ should use these variables instead of searching in PATH. See glib#1796.
Some distributions are renaming Glib/GIO utilities for multi-arch reasons so pkg-config variables have been added to find the correct name of a tool. GTK+ should use these variables instead of searching in PATH. See glib#1796.