/bin/bash: makecython++:command not found

[sxy2021]

command: cd submodules/KittiBox/submodules/utils/ && make error: makecython++ stitch_wrapper.pyx "" "stitch_rects.cpp ./hungarian/hungarian.cpp" /bin/bash: makecython++: command not found Makefile:5: recipe for target 'all' failed make: *** [all] Error 127 environment: python2.7 MultiNet/submodules/KittiBox/submodules/utils makefile: SHELL := /bin/bash

.PHONY: all all: pip install runcython makecython++ stitch_wrapper.pyx "" "stitch_rects.cpp ./hungarian/hungarian.cpp"