FreeBSD/Alpha compile issue

[Christopher Kings-Lynne]

Hi,

I get this on FreeBSD/Alpha (compiling from the ports collection).  Bison
version 1.75:

make  all-recursive
Making all in config
Making all in po
Making all in lib
Making all in data
Making all in src
make  all-am
Making all in doc
makeinfo --no-split   -I .  `test -f 'bison.texinfo' || echo
'./'`bison.texinfo -o bison.info
bison.texinfo:37: Unknown command `copying'.
bison.texinfo:58: Unmatched address@hidden'.
bison.texinfo:93: Unknown command `insertcopying'.
makeinfo: Removing output file `bison.info' due to errors; use --force to
preserve.
*** Error code 2

Stop in /usr/ports/devel/bison/work/bison-1.75/doc.
*** Error code 1

Stop in /usr/ports/devel/bison/work/bison-1.75.
*** Error code 1

Stop in /usr/ports/devel/bison/work/bison-1.75.
*** Error code 1

Stop in /usr/ports/devel/bison.

Is this an issue with the format of the info files in Bison?  Is there a
quick workaround?

Chris