Mixed makefile for building makefiles with multiple languages

MMakefile

# default interpreter is BASH
my-target:
    echo "hello"
    X=1
    echo "this is X: $X"
    
# One target may use Python 
my-other-target.py:
    i = 5
    print "hello there %d" % i 
    
# Other target may use LiveScript
test.ls
    adder = (a, b) --> a + b 
    adder5 = adder 5 
    console.log "Adding 3 to 5: #{adder5 3}"
    console.log "Adding 2 to 6: #{add 2 6}"
    
## You need to run like this file: 
# $ mmake my-target 
# $ mmake my-other-target 
# $ mmake test