Bug#873373: parallel building of kernel package seems broken
On Sun, Aug 27, 2017 at 3:14 PM, Roger Shimizu <rogershimizu@gmail.com> wrote:
On Mon, Aug 28, 2017 at 1:09 AM, Debian Bug Tracking System
<owner@bugs.debian.org> wrote:
> ---------- Forwarded message ----------
> From: Roger Shimizu <rogershimizu@gmail.com>
> To: Debian Bug Tracking System <submit@bugs.debian.org>
> Cc:
> Bcc:
> Date: Sun, 27 Aug 2017 15:14:17 +0900
> Subject: parallel building of kernel package seems broken
> Package: src:linux
> Version: 4.9.30-2+deb9u3
> Severity: normal
>
> Dear Maintainer,
>
> In d/changelog, I read there's support for "DEB_BUILD_OPTIONS=parallel=N",
> but this setting seems broken. No actual parallel compiling is proceeded,
> as I spotted by running "uptime" command several times during building.
>
> Is anything else need to be set, or parallel building is turned off
> because some other bugs?
>
> ---------- Forwarded message ----------
> From: Ben Hutchings <ben@decadent.org.uk>
> To: 873373-done@bugs.debian.org
> Cc:
> Bcc:
> Date: Sun, 27 Aug 2017 17:07:12 +0100
> Subject: Re: Bug#873373: parallel building of kernel package seems broken
> On Sun, 2017-08-27 at 15:14 +0900, Roger Shimizu wrote:
>> Package: src:linux
>> Version: 4.9.30-2+deb9u3
>> Severity: normal
>>
>> Dear Maintainer,
>>
>> In d/changelog, I read there's support for "DEB_BUILD_OPTIONS=parallel=N",
>> but this setting seems broken. No actual parallel compiling is proceeded,
>> as I spotted by running "uptime" command several times during building.
>>
>> Is anything else need to be set, or parallel building is turned off
>> because some other bugs?
>
> It works for me and it looks like it works on the buildds.
>
> I use the dpkg-buildpackage -j option rather than directly setting an
> environment variable. It might be that the way you start the build
> replaces or deletes this variable.
Thanks for this hint!
Looked up manpage of dpkg-buildpackage, I find option "-j" equals adding:
- DEB_BUILD_OPTIONS
- MAKEFLAGS
After adding MAKEFLAGS option, my script works as expected. [0]
Thanks again!
[0] https://wiki.debian.org/HowToCrossBuildAnOfficialDebianKernelPackage?action=diff&rev2=13&rev1=12
PS. Maybe you can also add this to the kernel handbook.
Cheers,
--
Roger Shimizu, GMT +9 Tokyo
PGP/GPG: 4096R/6C6ACD6417B3ACB1
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