Re: HEADSUP: drm-current-kmod now installs sources

From: Emmanuel Vadot <manu_at_bidouilliste.com>
Date: Wed, 14 Aug 2019 20:12:12 +0200
On Wed, 14 Aug 2019 11:04:03 -0700
John Baldwin <jhb_at_FreeBSD.org> wrote:

> On 8/14/19 10:23 AM, Emmanuel Vadot wrote:
> > On Wed, 14 Aug 2019 10:13:48 -0700
> > John Baldwin <jhb_at_FreeBSD.org> wrote:
> > 
> >> On 8/14/19 9:22 AM, Ian Lepore wrote:
> >>> This all sounds vaguely wrong, backwards, to me.  A developer who is
> >>> using a given module on their build system might want that module to be
> >>> rebuilt automatically, but only if the build parameters match those of
> >>> the running build host system.
> >>>
> >>> If my build host is running freebsd 12 amd64 and I'm doing a build for
> >>> freebsd 13 armv7, I have no interest in automatic rebuilds of an amd64
> >>> driver module for a different OS arch and version just because that
> >>> module happens to be installed on the system I use to do crossbuilds.
> >>>
> >>> My objections are theoretical... this automation just seems improperly
> >>> designed to me.  But it won't actually affect me in any way, because I
> >>> don't build video driver modules from ports, and I don't run freebsd
> >>> current on my build host machine.  Probably the number of people doing
> >>> crossbuilding is small enough that nobody else is going to object to
> >>> this "the whole world is amd64" automation.
> >>
> >> You assume DRM is amd64-only when it is definitely not.  It also has
> >> suitable guards in its Makefile to only build the relevant kernel
> >> modules on supported architectures.
> > 
> >  I clearly don't want to spend time to build the drm and radeon modules
> > when I'm hacking on arm64.
> 
> Didn't you when DRM2 was in base? 

 No, DRM2 was never connected for aarch64.

> Do you use MODULES_OVERRIDE now to
> limit the number of modules you are building?

 Most of the time yes, but if I don't set it, it shouldn't mean that I
want to compile an out of tree module that I installed for another arch.

> Setting LOCAL_MODULES would
> be no different to setting MODULES_OVERRIDE.  If you aren't setting
> MODULES_OVERRIDE, then I don't buy your argument as the default set of
> modules dwarfs DRM several times over.

 If nothing changes I will endup setting LOCAL_MODULES="" everytime but
again this is not the problem, see above.

> -- 
> John Baldwin
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-- 
Emmanuel Vadot <manu_at_bidouilliste.com> <manu_at_freebsd.org>
Received on Wed Aug 14 2019 - 16:12:15 UTC

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