make -j4 safety?

[Greg Troxel]

Werner Koch <wk at gnupg.org> writes:

> On Thu,  9 Aug 2007 02:39, gdt at ir.bbn.com said:
>
>> gmake[2]: *** No rule to make target `../common/libcommon.a', needed by `t-convert'.  Stop.
>>
>
> This has already been fixed.  Frankly I noted that problem too late
> during the release process and was too lazy to start from scratch.

OK; I added MAKE_JOBS_SAFE=no to avoid -j, and noted that this should be
removed for 2.0.6.

> I am using a dual CPU machine only since a short time and thus I am not
> yet very used to -j ;-)

I would recommend -j2 on a uniprocessor and -j4 on dual; that overlaps
computation with file reading.  Plus all maintainers should use -j8 to
look for parallel make bugs.