yes, luckily the switch to libtrpc is delayed.
From the -current glibc's Slackbuild
# Reexport the RPC interfaces that were removed in glibc-2.14.
# Sure, it's crufy code, but stuff needs it, so rather than pull the
# rug out from under you, we'll just humbly recommend that you consider
# transitioning away from it... :-)