Comment 1 for bug 1776270

I also verified that this problem also applies to the latest (bionic+cosmic/amd64) build, 20140715-1build1.

I believe the problem is in the debian/rules file at line 32:

    30 dh_auto_configure -- $(shell dpkg-buildflags --export=configure) \
    31 --program-transform-name='s,^,b,' \
    32 --enable-byacc

The last line should read: --enable-btyacc