[CMake] Fedora 11 and mingw32

[dulsi at identicalsoftware.com]

Quoting "Hendrik Sattler" <post at hendrik-sattler.de>:

> Zitat von dulsi at identicalsoftware.com:
>
>> Adding /usr/i686-pc-mingw32/sys-root/mingw isn't going to accomplish
>> anything as /include is not in the list that FindSDL.cmake is looking
>> at.  It is looking for /usr/include.  I tried it anyway and it still
>> doesn't find SDL.  I could modify FindSDL.cmake to make it work but my
>> goal is to make the program compile on a standard fedora system.
>
> I cite myself: "You may also have to call include_directories() for all
> standard include paths in your root paths."
> This may include adding the your include/SDL.
>
> I admit that FindSDL is not using the latest technique of PATH_SUFFIXES
> the right way (should be include include/SDL include/SDL11
> include/SDL12, and the PATHS list below should be much smaller then).
> Nevertheless, doing it right in the toolchain file will probably make
> it work.
> You can also set the variable ENV{SDLDIR} in your toolchain file if you
> find that easier:
> set ( ENV{SDLDIR} /my/path/to/include/SDL )
>
> HS

While I could do that, it defeats the purpose of the mingw32  
cross-compiler.  The point is to allow you to cross-compile for  
windows without needing any changes to your project.  I've filed a bug  
with fedora to see if it can be fixed.