[OE-core] qt3 vs qt4 issues

[Dmitry Eremin-Solenikov]

On 09/26/2011 04:36 PM, Richard Purdie wrote:
> On Mon, 2011-09-26 at 16:30 +0400, Dmitry Eremin-Solenikov wrote:
>> On 09/25/2011 06:50 PM, Koen Kooi wrote:
>>>
>>> Op 25 sep. 2011, om 13:33 heeft Richard Purdie het volgende geschreven:
>>>
>>>> I've been looking at the qt3 failures on the autobuilder. It seems there
>>>> is some kind of contamination between the qt4 builds and the qt3 builds
>>>> and I'm not sure what is or isn't expected to work there.
>>>>
>>>> We're doing the following in the build:
>>>>
>>>> a) Build core-image-lsb (includes qt4, builds qt4+qt4-native)
>>>> b) Wipe out tmp
>>>> c) Add in meta-qt3 layer
>>>> d) Enable sstate from build in a)
>>>> e) Build core-image-lsb-qt3 which adds in qt3
>>>> f) Bitbake determines it needs to install qt4 for the image but
>>>>     nothing depends on the native qt4 tools so these are not installed
>>>> g) This will build qt3+qt3-native with qt4 in the sysroot but no
>>>>     qt4-native
>>>> h) We see build failures as qt3 seems to want to find bits of qt4-native
>>>>
>>>> If qt4 and qt4-native are present, qt3 works
>>>> If qt4 and qt4-native are not present, qt3 works
>>>> If qt4 is present but qt4-native is not, qt3 fails
>>>>
>>>> How do we fix this?
>>>
>>> I suspect qt3 is missing bits of the tool renaming we do for qt4 and qt2 (moc, uic, lrelease, etc)
>>
>> Most probably it's true. However for qt3 it can be harder, as qt4
>> already provides uic3, etc.
>
> If there is overlap, the files could be installed into subdirectories
> under bin and then inserted into PATH by the appropriate .bbclass
> files...

For qt2/opie we just install uic/moc as uic2/moc2 and the select 
appropriate tools by passing OE_xxx_MOC (I don't remember xxx ATM) 
environment variable to qmake/make.

-- 
With best wishes
Dmitry