Re: Cross-building Debian `linux` package (Was: Re: Unmet dependencies problem in CrossToolchains)
On Mon, Apr 6, 2015 at 6:53 PM, John Morris <john@zultron.com> wrote:
>
>
> On 04/06/2015 05:22 PM, Shawn Landden wrote:
>>
>> On Mon, Apr 6, 2015 at 3:15 PM, John Morris <john@zultron.com> wrote:
>>>
>>>
>>>
>>> On 03/30/2015 10:45 PM, Wookey wrote:
>>>>
>>>>
>>>> +++ John Morris [2015-03-30 22:16 -0500]:
>>>>
>>>>> I'm going to try setting up Wookey's cross-build daemon
>>>>
>>>>
>>>>
>>>> (careful - it really could do with some more work to be moderately
>>>> general!)
>>>>
>>>>> or use sbuild directly, so never mind.
>>>
>>>
>>>
>>> Thanks for the tips, Wookey. I ended up adding `sbuild` functionality to
>>> some scripts I had laying about, and it looks like all the Machinekit
>>> dependencies can be compiled.
>>>
>>> However, there are a few packages that can't be *cross*-compiled, the
>>> most
>>> irritating of which is the Debian `linux` package. (I've modified the
>>> packaging to build Xenomai and RTAI 'featuresets'.)
>>>
>>> The problem is the explicit `Build-Depends: gcc-4.9`, which can't be met
>>> by
>>> the `crossbuild-essential-armhf` or its dependencies. For now qemu will
>>> get
>>> the job done, but of course take ages to do it.
>>>
>> What are you building linux for? If it is just the linux-libc-dev
>> package then there might be a reduced build that only builds that.
>
>
> Xenomai [1] and RTAI [2] are two real-time frameworks. They're both based
> on the ipipe patch, which is a heavy modification to the Linux kernel.
> Looks like I may have to start building the RT_PREEMPT kernel too, since
> that's been dropped from Jessie. Machinekit [3] features a RT threads layer
> that we've ported to several threads systems.
>
> The Beaglebone kernel took over 2 hours to compile with -j8 under qemu.
> Ouch.
Just skip the debian packaging altogether and use `make deb-pkg` from
the linux source tree. (with CONFIG_CROSS_COMPILE set appropriately)
>
> [1]: http://xenomai.org
> [2]: https://www.rtai.org
> [3]: http://machinekit.io
>
> John
>
>
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--
Liberty equality fraternity or death,
Shawn Landden
ChurchOfGit.com
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