As of udev-145, it no longer compiles using uclibc. There is now a dependency on fstatat (and possibly other at functions). This functionality has been added to the head of uclibc, but is not currently in a released version (as of 0.9.30.1) My Current workaround is to mask >=sys-fs/udev-145 Reproducible: Always
The upstream uclibc 0.9.30.2 has the at functions added now, so once it is in portage, this should be resolved.
0.9.33.1 is in the tree now