FYI: make's "max_jobs" needs to be separated from -j (now?)

I have been tracking stable/ and head (daily, with a few exceptions) for
many years, now.  Over time, I set up a set of ([t]csh) aliases to
simplify the exercise for me.

Until yesterday, the "make -j${max_jobs} buildworld" construct had
worked without issue, but (yesterday), the invocation failed quite
quickly:

| Tue Oct  1 11:54:18 UTC 2024
| --- buildworld ---
| make[1]: "/usr/src/Makefile.inc1" line 362: SYSTEM_COMPILER: Determined that CC=cc matches the source tree.  Not bootstrapping a cross-compiler.
| make[1]: "/usr/src/Makefile.inc1" line 367: SYSTEM_LINKER: Determined that LD=ld matches the source tree.  Not bootstrapping a cross-linker.
| --------------------------------------------------------------
| >>> World build started on Tue Oct  1 11:54:18 UTC 2024
| --------------------------------------------------------------
| >>> Deleting stale files in build tree...
|         0.14 real         0.23 user         0.10 sys
| *** [_cleanworldtmp] Error code 6
| 
| make[1]: stopped making "buildworld" in /usr/src
| .ERROR_TARGET='_cleanworldtmp'
| .ERROR_META_FILE=''

On a bit of a whim, I tried adjusting the "max_jobs" values (downward),
which didn't help, but removing the "-j14" entirely did not produce a
failure.

On the other hand, rebuilding clang/llvm with a single core on a laptop
(when I actually want to be able to use the laptop later in the day
while I'm at work) didn't seem productive.

A bit more rather randomly "trying stuff" yielded the result that while

	make -j14 buildworld

failed (as described above),

	make -j 14 buildworld

carries on as before -- it's building lib/clang (and using multiple
cores to do so)....  :-}

(Now, if I could figure out why xdm built (and which runs fine) under
stable/14 now just mutters "exit status 1" when invoked under head, that
would be Quite Nice.  I don't *think* it involves attempts to use "errno"
as a symbol -- at least, nm didn't see such a reference in the
unstripped executable I had lying about.)

Anyway: just in case there's someone else out there encountering the
above, this may shed a bit of light.

Peace,
david
-- 
David H. Wolfskill                              david@catwhisker.org
Appeasement in 1938 did not bring peace in 1939.
What would appeasement bring now?

See https://www.catwhisker.org/~david/publickey.gpg for my public key.