make -f ./ksrc.mk GENKERNEL=$(XFLIB_DIR)/L2/scripts/generate_kernels SPEC=./kernel/spec.json TOOLDIR=./_krnlgen
Here you use the L2 Data-Mover generator tool ($(XFLIB_DIR)/L2/scripts/generate_kernels). This tool uses the kernel/spec.json specification to write kernel/mm2s_mp.cpp and kernel/s2mm_mp.cpp HLS kernel source files.