The mm2s and s2mm kernels are HLS-based and use the Vitis compiler to compile them into XO files.
To build these kernels run the following commands:
v++ -c --platform <path_to_platform/platform.xpfm> -g --save-temps -k mm2s pl_kernels/mm2s.cpp -o mm2s.xo
v++ -c --platform <path_to_platform/platform.xpfm> -g --save-temps -k mm2s pl_kernels/s2mm.cpp -o s2mm.xo
or
make kernels