A long while ago I bookmarked this build failure of picolisp on Debian
and it looks like an OS-independent issue, and seems to be trivially fixable,
- under "Undefined bits/confname.h macros (PIPE_BUF, ...)"
(albeit requiring context-dependent ifdefs). Since I saw the issue I haven't
had time to setup a Hurd build environment to actually write and test a
patch. Rather than putting it off for another year, or writing a "best guess"
patch and opening it as a bug-with-patch on the Debian BTS, I figured it is
simpler and faster to post about it here - so if anyone else finds the time,
and if the fix really is that simple, it can help all users more quickly.
BB0A 0787 C0EE BDD8 7F97 3D30 49F2 13A5 265D CCBD
"There is a great difference between worry and concern. A worried person sees
a problem, and a concerned person solves a problem."
- Harold Stephens