>OK, the following works  for me:
>
>>    Any additional libraries? [-lm -lc -lposix -lcrypt] -lm -lc -lcrypt

>tho' I don't see how to set 'libswanted' from the command line.

Sigh.  And POSIX emulation turns it back on anyway.  If you build the
POSIX emulation (default) ,you'll probably need to edit -lposix out of
ext.libs after running Configure but before doing a make.