[CMake] when are variables inherited?

[Sylvain Benner]

> I still don't understand when variables are inherited by subdirectories.
> I see that if I define the variable using cmake -D then it is the same
> in all subdirectories. I guess I could use an environment variable.
> However, if I do something like:
>
> SET (FINITO_INSTALL_DIR /Users/jgonzalez/financial/finito/trunk CACHE
> PATH "finito-dir")
>
> it is not inherited by subdirectories. What am I missing
Hello,

Which command do you use for subdirectories ?
Be sure to use ADD_SUBDIRECTORY and not SUBDIRS which is an old command 
left in current release for compatibility purpose.

The behavior of ADD_SUBDIRECTORY is that each CMakeLists.txt added with 
this command inherits from the variables set in the caller CMakeLists.txt.

--Sylvain