Bug#864639: nvidia-kernel-dkms: please support parallel builds

[Andras Korn]

On Thu, Jun 15, 2017 at 02:25:42PM +0200, Andreas Beckmann wrote:

> On 2017-06-12 08:27, Andras Korn wrote:
> > even if dkms would pass make(1) a -j flag. (Also, while I'm sure there once
> > was a reason for setting CCACHE_DISABLE=1, does it still apply?)
> 
> I don't remember the details ... #582748 ... looks like this bug in
> ccache 2.4 was fixed in ccache 3.0 (which was in squeeze).

Then I'd suggest dropping CCACHE_DISABLE because ccache can help speed up
builds a lot.

> > I haven't tested it, but maybe the following would work:
> > 
> > [ -x /usr/bin/nproc ] && JOBS="-j$(nproc)"
> > MAKE[0]="unset ARCH; env CCACHE_DISABLE=1 NV_VERBOSE=1 \
> >     make $JOBS modules KERNEL_UNAME=${kernelver}"
> 
> Let's just honor the -j option from dkms:
> 
> MAKE[0]="unset ARCH; env CCACHE_DISABLE=1 NV_VERBOSE=1 \
>     make ${parallel_jobs+-j$parallel_jobs} modules
> KERNEL_UNAME=${kernelver}"

This looks good, provided the file is sourced (dkms doesn't currently export
the parallel_jobs variable, so that a child process wouldn't see it).

András

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