Re: A quick note about devel/afl++

> Date: Tue, 4 Aug 2026 22:06:57 +0000 (UTC)
> From: John Klos <[email protected]>
> 
> I remember there were issues with rust ignoring MAKE_JOBS in the past, but 
> that was on systems with multiple cores where rust used all the cores no 
> matter what. But where would afl++ get the idea that more than one job 
> simultaneously make sense?

A cursory glance at the GNUmakefile shows:

all:	test_x86 test_shm test_python ready $(PROGS) llvm
...
llvm:
	-$(MAKE) -j$(nproc) -f GNUmakefile.llvm

I don't see nproc defined anywhere, so this will likely actually pass
the plain argument `-j', which for GNU make means that it turns into a
forkbomb, forking all the jobs that are ready without limit:

       -j [jobs], --jobs[=jobs]
            Specifies the number of jobs (commands) to run simultaneously.  If
            there is more than one -j option, the last one is effective.  If
            the -j option is given without an argument, make will not limit
            the number of jobs that can run simultaneously.

We should just patch this out; it is obviously wrong, and there is no
reason for any ordinary makefile to do anything with -j itself.