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95 lines
4.0 KiB
Python
Executable File
95 lines
4.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import os
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import platform
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import sys
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from textwrap import dedent
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def load_mach(dir_path, mach_path):
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# Defer import of "importlib.util" until after Python version check has happened
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# so that Python 2 usages fail gracefully.
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import importlib.util
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spec = importlib.util.spec_from_file_location('mach_initialize', mach_path)
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mach_initialize = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(mach_initialize)
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return mach_initialize.initialize(dir_path)
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def check_and_get_mach(dir_path):
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initialize_paths = (
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# Run Thunderbird's mach_initialize.py if it exists
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'comm/build/mach_initialize.py',
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'build/mach_initialize.py',
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# test package initialize
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'tools/mach_initialize.py',
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)
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for initialize_path in initialize_paths:
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mach_path = os.path.join(dir_path, initialize_path)
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if os.path.isfile(mach_path):
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return load_mach(dir_path, mach_path)
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return None
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def main(args):
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# Ensure we are running Python 3.6+. We run this check as soon as
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# possible to avoid a cryptic import/usage error.
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if sys.version_info < (3, 6):
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print("Python 3.6+ is required to run mach.")
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print("You are running Python", platform.python_version())
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if sys.platform.startswith("linux"):
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print(dedent("""
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See https://firefox-source-docs.mozilla.org/setup/linux_build.html#installingpython
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for guidance on how to install Python on your system.
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""").strip())
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elif sys.platform.startswith("darwin"):
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print(dedent("""
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See https://firefox-source-docs.mozilla.org/setup/macos_build.html
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for guidance on how to prepare your system to build Firefox. Perhaps
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you need to update Xcode, or install Python using brew?
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""").strip())
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elif "MOZILLABUILD" in os.environ and os.environ.get("TERM"):
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print(dedent("""
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Python is provided by MozillaBuild; ensure your MozillaBuild installation is
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up to date. See https://firefox-source-docs.mozilla.org/setup/windows_build.html#install-mozillabuild
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for details.
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""").strip())
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elif sys.platform.startswith("win"):
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print(dedent("""
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You probably want to be interacting with Mach from within MozillaBuild, see
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https://firefox-source-docs.mozilla.org/setup/windows_build.html for details.
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If you are deliberately using Mach from outside MozillaBuild, then see
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https://firefox-source-docs.mozilla.org/mach/windows-usage-outside-mozillabuild.html#install-python
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for guidance on installing native Python on your system.
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""").strip())
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else:
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print(dedent("""
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We do not have specific instructions for your platform on how to
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install Python. You may find Pyenv (https://github.com/pyenv/pyenv)
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helpful, if your system package manager does not provide a way to
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install a recent enough Python 3.
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""").strip())
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sys.exit(1)
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# XCode python sets __PYVENV_LAUNCHER__, which overrides the executable
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# used when a python subprocess is created. This is an issue when we want
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# to run using our virtualenv python executables.
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# In future Python relases, __PYVENV_LAUNCHER__ will be cleared before
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# application code (mach) is started.
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# https://github.com/python/cpython/pull/9516
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os.environ.pop("__PYVENV_LAUNCHER__", None)
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mach = check_and_get_mach(os.path.dirname(os.path.realpath(__file__)))
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if not mach:
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print('Could not run mach: No mach source directory found.')
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sys.exit(1)
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sys.exit(mach.run(args))
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if __name__ == '__main__':
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main(sys.argv[1:])
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