[CMake] What does `cross-platform' mean?

[Bill Hoffman]

Mathias Fröhlich wrote:

> 
> The basic problem is that almost all cmake macros tend to test sideeffects 
> that in some special cases are related to what you need to test. But only for 
> special cases.
> So testing for the existence of a .so in /usr/lib does in no way tell anything 
> if you can link with that one...
> 
> So, the good old autotools, if you like it or not, tend to test what is 
> required for exactly that reason. And guess - this works way better than what 
> cmake does.
> 
Can you describe exactly what you think autotools does here?   I guess 
most autotools tests use a try-compile to find a library.  Is that what 
you are referring to?


-Bill