pkgconfig(NetworkManager) is no more, use pkgconfig(libnm)
libnm-glib/libnm-util were dropped quite a while ago and so the NetworkManager.pc file does no longer exist on openSUSE Tumbleweed.
libnm-glib/libnm-util were dropped quite a while ago and so the NetworkManager.pc file does no longer exist on openSUSE Tumbleweed.