Re: Build on Ubuntu 18.10 fails due to 'freadseek.c:68:3: error: #error "Please port gnulib freadseek.c to your platform! Look at the definition of getc, getc_unlocked on your system, then report this to bug-gnulib."'

[Santiago Vila]

Hmm, a little bit of search says this is supposed to be fixed by this
patch from Paul Eggert:

https://lists.gnu.org/r/bug-gnulib/2018-03/msg00002.html

Thanks.