CONFIG: Adding cross platform support
CONFIG: Adding cross platform support

For cross platform we only check if the code can be
linked. Otherwise we also check that we can run the code.

miked-mellanox/ucx,miked-mellanox/ucx,manjugv/ucx,shssf/ucx,biddisco/ucx,manjugv/ucx,sergsagal1/ucx_rocm,abouteiller/ucx,biddisco/ucx,manjugv/ucx,sergsagal1/ucx_rocm,abouteiller/ucx,sergsagal1/ucx_rocm,shssf/ucx,miked-mellanox/ucx,abouteiller/ucx,biddisco/ucx,shssf/ucx,abouteiller/ucx