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make_var

  • Retrieve all variables defined by make command by python
  • Expand make type variables $(VAR) in string

Package allow you to access any symbol defined in make. It might be helpful to transfer your Makefile based project to different one.

Installation

pip install make_var

Tutorial

How to use package:

  • just create simple Makefile containing variables H and W
H = hello
W = world
  • next create python file read_makefile.py
#!/usr/bin/env python3
from make_var import *

M=make_vars(origin=['makefile']) # retrieve only data defined in makefiles
print(M['makefile']['H'], M['makefile']['W'])

execute it and you get hello world

  • to get all variables that make uses just write
M=make_vars(origin=None)        # all variables
print(M.keys())                 # print all origins

output is ['environment', "'override'", 'automatic', 'makefile', 'default']

String expansion

Example to replace $(var) by definition from Makefile

  • use same Makefile as before
  • edit python file
print(make_expand(M,"$(H) $(W)")) # replaces $(H) with "hello" and $(W) with "word"

you get hello world

Internals

package is based on GNU make command make -pnB