[OE-core] Feedback on building openembedded-core for qemuarm. Excerpts from buildlog

[Ulf Samuelsson]

On 2011-11-26 13:38, Eric Bénard wrote:
> Hi Ulf,
>
> Le 26/11/2011 12:24, Ulf Samuelsson a écrit :
>> 3. When I ran into this problem, I exited with ctrl-C.
>> This left some recipes in the middle of a fetch ,and the build could not
>> continue.
>> I had to "bitbake -c clean <package>" on all problematic packages to 
>> recover.
>> Seems a little bit fragile to me.
>>
> already met here : you must let bitbake end the other tasks already 
> started to prevent that (so only one control C).
>
>> 4. linux-3.0 recipe in meta-ti does not build (On Ubuntu 11.10 x64).
>> Fails in the fetch stage.
>> I removed the layer, since it was not needed for qemuarm.
>>
> I also met this kind of problem. To prevent that problem, in my bsp 
> overlay, I always add COMPATIBLE_MACHINE = "" to the machine specific 
> recipes.
> What is strange is that meta-ti also have this in its recipes so their 
> linux-3.0 recipe should not be used if you target qemuarm.
>
>> 5. When compiling on a Ubuntu 11.10 x64 host (linux 3.x host)
>> tiff won't build.
>> Did:
>> bitbake console-image"
>> bitbake -c clean tiff
>> bitbake tiff
>> - No luck
>> Reading through the mailing list, I found someone which deleted
>> $TMPDIR and then
>> bitbake tiff
>> bitbake console-image
>> That worked for me as well once, second time, same problem.
>> Problem is that #include <iostream> fails.
>>
>> I noted that "iostream" is built and available in 
>> <sysroot>/usr/include/c++
>> On the host, it is located in /usr/incolude/c++/<version>
>> "tiff" build seems to be OK with Ubuntu 11.04 i686.
>>
> what is your BB_NUMBER_THREADS setting ?
> Here (on 2 different hosts/distro/arch but with an i7 CPU in both 
> cases) if I set it over 4, I often (always with a value of 8) meet 
> problems with c++ includes during build from scratch. 4 seems the 
> magic value which never trigger the problem.

OK, it is higher than that.
Was trying out a Core-i7-980X with 6 cores/12 threads with TMP on a fast 
SSD.
The CPU seems to be running at low frequencies most of the time.


>
> Eric
>
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-- 
Best Regards
Ulf Samuelsson
eMagii