[CMake] Platform-independent config package

[Andreas Naumann]

Dear Ghis,

the easiest long-term fix would be an own glmConfig.cmake file.
The command write_basic_package_version_file uses a template with those 
pointer checks. The glm-developers could simply copy the template to 
their source directory, remove the unneeded lines and run the 
configure_file command themself on the changed template.

The short solution for debian would be a patch file,which just 
uncomments the last 5 lines.

Regards,
Andreas

Am 10.01.2017 um 19:52 schrieb Ghislain Vaillant:
> Dear all,
>
> I am currently hit by an issue with the CMake detection of a 
> header-only library [1]. The library is built on a 64-bit machine and 
> packaged for all other architectures supported by Debian.
>
> However, CMake detection fails on 32-bit platforms with the following 
> error:
>
> ```
> Any attempt to call `find_package(glm REQUIRED)` produces the following
> error:
>
> ```
> Could not find a configuration file for package "glm" that is
> compatible with requested version "".
>
> The following configuration files were considered but not accepted:
>
>     /usr/lib/cmake/glm/glmConfig.cmake, version: 0.9.8 (64bit)
> ```
>
> How can this be effectively solved? Can the bit-ness detection be 
> dropped somehow? It should not be needed for a header-only target.
>
> Cheers,
> Ghis
>
>
> [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=850277
>
>