Makefile biolerplate

Makefile

.DEFAULT_GOAL := help

# Some Makefile utilities
define PRINT_HELP_PYSCRIPT
import re, sys

class bcolors:
    HEADER = '\033[95m'
    OKBLUE = '\033[94m'
    OKGREEN = '\033[92m'
    WARNING = '\033[93m'
    FAIL = '\033[91m'
    ENDC = '\033[0m'
    BOLD = '\033[1m'
    UNDERLINE = '\033[4m'

lines = []
print('''
{BOLD}Makefile boilerplate{ENDC}
'''.format(**bcolors.__dict__))
targets = []
for line in sys.stdin:
	match = re.match(r'^([a-zA-Z_-]+):.*?## (.*)$$', line)
	if match:
		target, help = match.groups()
		targets.append((target, help))

for target, help in sorted(targets):
	print(r"%s%-32s%s %s" % (bcolors.OKGREEN, target, bcolors.ENDC, help))

print("""

{HEADER}make help{ENDC}
""".format(**bcolors.__dict__))
endef
export PRINT_HELP_PYSCRIPT


define BROWSER_PYSCRIPT
import os, webbrowser, sys
try:
	from urllib import pathname2url
except:
	from urllib.request import pathname2url

webbrowser.open("file://" + pathname2url(os.path.abspath(sys.argv[1])))
endef
export BROWSER_PYSCRIPT

BROWSER := python -c "$$BROWSER_PYSCRIPT"

define SHOW_VARS_SCRIPT
import re
is_var_def = re.compile(r'(\w+)\s?\?\=\s?([\w\.\-]*)')
with open('Makefile') as fp:
    for line in fp.readlines():
        match = is_var_def.match(line)
        if match:
            print('{} = {}'.format(match.group(1), match.group(2)))

endef
export SHOW_VARS_SCRIPT


help:
	@python -c "$$PRINT_HELP_PYSCRIPT" < $(MAKEFILE_LIST) | less