Trying to upgrade from 9.2 to 10-STABLE, make buildworld fails on yacc

[Julie Koubová]

Hi,

I am trying to upgrade from 9.2 to 10-STABLE, kernel-toolchain and buildkernel completes successfully, but make buildworld fails when linking yacc. Any ideas, please? I deleted everything in /usr/obj and started from scratch, but it didn't help.

Hopefully all relevant files are here: 
https://gist.github.com/jachymko/8d1de9eb1826ae942f67

Thanks!
Julie