More readable errors

[smarie]

I tried a simple makefile with an echo command on windows

.PHONY: say_hello
.DEFAULT_GOAL := say_hello

say_hello:
	@echo "hello"

And got this error:

Traceback (most recent call last):
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2018.3.3\helpers\pydev\pydevd.py", line 1758, in <module>
    main()
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2018.3.3\helpers\pydev\pydevd.py", line 1752, in main
    globals = debugger.run(setup['file'], None, None, is_module)
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2018.3.3\helpers\pydev\pydevd.py", line 1147, in run
    pydev_imports.execfile(file, globals, locals)  # execute the script
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2018.3.3\helpers\pydev\_pydev_imps\_pydev_execfile.py", line 18, in execfile
    exec(compile(contents+"\n", file, 'exec'), glob, loc)
  File "C:/_dev/python_ws/_Libs_OpenSource/py-make/examples/simple_examples.py", line 21, in <module>
    main()
  File "C:/_dev/python_ws/_Libs_OpenSource/py-make/examples/simple_examples.py", line 17, in main
    pymake.main()
  File "C:\_dev\python_ws\_Libs_OpenSource\py-make\pymake\_main.py", line 63, in main
    ignore_errors=opts['--ignore-errors'])
  File "C:\_dev\python_ws\_Libs_OpenSource\py-make\pymake\_pymake.py", line 143, in execute_makefile_commands
    check_call(parsed_cmd)
  File "C:\Miniconda3\envs\tools_py37\lib\subprocess.py", line 342, in check_call
    retcode = call(*popenargs, **kwargs)
  File "C:\Miniconda3\envs\tools_py37\lib\subprocess.py", line 323, in call
    with Popen(*popenargs, **kwargs) as p:
  File "C:\Miniconda3\envs\tools_py37\lib\subprocess.py", line 775, in __init__
    restore_signals, start_new_session)
  File "C:\Miniconda3\envs\tools_py37\lib\subprocess.py", line 1178, in _execute_child
    startupinfo)
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2018.3.3\helpers\pydev\_pydev_bundle\pydev_monkey.py", line 513, in new_CreateProcess
    return getattr(_subprocess, original_name)(app_name, patch_arg_str_win(cmd_line), *args)
FileNotFoundError: [WinError 2] Le fichier spécifié est introuvable

It seems that the stacktrace could definitely be improved. I'll propose a PR for this.

[casperdcl]

haven't checked but it may be := isn't supported

[casperdcl]

or maybe Makefile isn't accessible in your cwd

[smarie]

It was actually @echo that is not accessible because on windows it is not an exe but a command from the CMD. But I will still propose something to improve the stack trace