[CMake] Flex/Bison in cmake

[Marco Canini]

Hi.
I wonder if there's a "standard way"(tm) to deal with flex and bison in
cmake.
I tried to find something around but haven't found any solution.
It seems that also KDE doesn't have anything to integrate flex & bison
file generation inside cmake.
I would also expect to have the modules FindFlex and FindBison in the
default distribution.
Any suggestion is welcome.

-- 
Marco Canini