[yocto] CMake based recipes and defining CMAKE_BUILD_TYPE

[Mikko.Rapeli at bmw.de]

Hi,

>From my experience, what CMAKE_BUILD_TYPE means varies between SW components.
Thus I think the current approach of not setting it is correct. SW components
must set their own defaults in either CMakeLists.txt or in the bitbake recipe.

Also, building with debug info is separate from CMAKE_BUILD_TYPE. The default
compile flags from yocto will include -g for debug symbols and this is provided
to CMake compile flags too.

Cheers,

-Mikko