Forcing -m64 for GCC disrupts testing on 32-bit systems

[muep]

Is it actually necessary to have CMakeLists.txt always specify -m64 like it does here:

if(CMAKE_COMPILER_IS_GNUCXX)
    #add_definitions(-S)
    #add_definitions(-s)
    add_definitions(-m64)
    add_definitions(-O2)

    #add_definitions(-fprofile-arcs -ftest-coverage) gcov
    #ctest_enable_coverage()
endif()

I would normally expect to be able to build and run the tests on the native architecture of the host I use, without having to change the cmake setup on 32-bit hosts. This is also used in the Fedora packaging of glm, that runs the tests shipped alongside glm when packages are built.

[Groovounet]

This issue is fixed in master branch for GLM 0.9.7 release and I might back port it to GLM 0.9.6.4 if this is useful.

Thanks for contributing,
Christophe