[CMake] rules for writing cmake modules

[Alexander Neundorf]

Hi, 
 
I think it would be a good idea if the cmake wiki would contain a page  
with rules how a good cmake module file should behave. 
Like: 
 
If you write a FindLibFOO.cmake, then the following variables should be 
defined: 
FOO_FOUND 
FOO_INCLUDE_DIR 
FOO_LIBRARY 
FOO_LINK_DIR (?) 
 
Should it print some status messages on success/failure ? 
Should it MESSAGE(FATAL_ERROR "Foo not found") on failure ? 
Should it use ADD_DEFINITIONS() or just SET(FOO_DEFINITIONS -Dwhatever) ? 
Or more general, should it use commands, which affect the build or should 
it just set variables which can then be used from the outside ? 
 
What do you think ? 
How should a good cmake module work ? 
 
Bye 
Alex 
 

-- 
Lust, ein paar Euro nebenbei zu verdienen? Ohne Kosten, ohne Risiko!
Satte Provisionen für GMX Partner: http://www.gmx.net/de/go/partner