Makefile .ONESHELL

# --- specify target with `make run TARGET=mnist.py`
TARGET=mnist.py
run:
	ml_python $(TARGET)

# --- passing parameters `# make helloworld_pars MYVAR="something"`
MYVAR = "hello"
helloworld_pars:
	@echo "foo" $(MYVAR)

# --- example reading from stdin
helloworld_input:
	@read -p "please write something: " MYVAR
	@echo $${MYVAR}

# --- example reading from stdin w/ defaults
helloworld_inputdefault:
	@read -p "please write something: " MYVAR
	MYVAR=$${MYVAR:-"my default value"}
	@echo $${MYVAR}

# --- passing makefile parameters to bash
# Usage:
#   make blah 						  #< prints bar
#   make blah VERSION=foo   #< prints foo
blah:
	@VERSION=$${VERSION:-bar}
	@echo $${VERSION}