[CMake] compile header file for precompiled gcc headers

[klaas.holwerda]

Hi,

I want to get gcc to use precompiled headers.
 From http://gcc.gnu.org/onlinedocs/gcc/Precompiled-Headers.html
i read that i need to compile a header file ( containing #includes to 
all others for instance ).

I have this haeder file, how to compile it with Cmake?

I tried CHECK_CXX_SOURCE_COMPILES( wxart2d.h DONNO )

But that does not produce a "wxart2d.gch" file.

Understand that i do not need to get an executable nor library.

Does somebody know how to do it?

Has someone already succeeded in using precompiled headers with gcc on 
Linux, any tips?

Thanks,

Klaas