[CMake] How to query compiler definitions?

[SF Markus Elfring]

> Why not? That's mostly equivalent to doing it based on -DNDEBUG (which
> is automatically defined for Release and MinSizeRel).

I would like to be precise here.

Do any configurations exist in the software development world where the build 
type "Release" does not include a definition for this preprocessor symbol?


> So, you always build tinyxml?

Its compilation should depend on the application part that uses objects and 
corresponding member functions from this C++ class library.


> add_library(tinyxml STATIC

By the way:
How do you think about the attachment for the feature request "Use CMake for 
build system"?
https://sourceforge.net/tracker/?func=detail&aid=3151377&group_id=13559&atid=363559


I imagine that you might be affected with your project "FreeFOAM" in a similar 
way if I would dare to bundle its source files into an other project. I am 
curious if we will find more useful ideas for the involved issues.

Regards,
Markus