[oe] [PATCH] Add toolchain file generation to cmake bbclass

[Matthew Dombroski]

> I have tried it, and the only thing I now have in the EXTRA_OECMAKE is 
> QT_QMAKE_EXECUTABLE to be sure that it takes the one from staging and 
> not the one from my system.
>
>> inherit qt4e cmake
>> EXTRA_OECMAKE += "-DSHARED_LIBS:BOOL=ON -DCMD_LINE:BOOL=ON \
>>         -DQT_QMAKE_EXECUTABLE=${OE_QMAKE_QMAKE} \
>>         "
>>
>> export QT_CONF_PATH="${WORKDIR}/trunk/qt.conf"
>>
>> do_configure_prepend() {
>>     echo "[Paths]" > $QT_CONF_PATH
>>     echo "Prefix=${STAGING_DIR}/${HOST_SYS}/usr" >> $QT_CONF_PATH
>>     echo "Documentation=${docdir}/${QT_DIR_NAME}" >> $QT_CONF_PATH
>>     echo "Headers=${STAGING_INCDIR}/${QT_DIR_NAME}" >> $QT_CONF_PATH
>>     echo "Libraries=${STAGING_LIBDIR}" >> $QT_CONF_PATH
>>     echo "Binaries=${STAGING_BINDIR_NATIVE}" >> $QT_CONF_PATH
>>     echo "Plugins=${libdir}/${QT_DIR_NAME}/plugins" >> $QT_CONF_PATH
>>     echo "Data=${datadir}/${QT_DIR_NAME}" >> $QT_CONF_PATH
>>     echo "Translations=${datadir}/${QT_DIR_NAME}/translations" >> 
>> $QT_CONF_PATH
>>     echo "Settings=${sysconfdir}/${QT_DIR_NAME}" >> $QT_CONF_PATH
>>     echo "Examples=${bindir}/${QT_DIR_NAME}/examples" >> $QT_CONF_PATH
>>     echo "Demos=${bindir}/${QT_DIR_NAME}/demos" >> $QT_CONF_PATH
>> }
>>
That looks quite good now, maybe it's a good idea to add a 
generate_qt_conf() to qmake2.bbclass.
That way it's independent of what build system we're using.

~Matt