mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 10:45:18 +00:00
49 lines
1.5 KiB
Python
Executable File
49 lines
1.5 KiB
Python
Executable File
#!/usr/bin/env bash
|
|
|
|
# Modern Linux and macOS systems commonly only have a thing called `python3` and
|
|
# not `python`, while Windows commonly does not have `python3`, so we cannot
|
|
# directly use python in the shebang and have it consistently work. Instead we
|
|
# embed some bash to look for a python to run the rest of the script.
|
|
#
|
|
# On Windows, `py -3` sometimes works. We need to try it first because `python3`
|
|
# sometimes tries to launch the app store on Windows.
|
|
'''':
|
|
for PYTHON in "py -3" python3 python python2; do
|
|
if command -v $PYTHON >/dev/null; then
|
|
exec $PYTHON "$0" "$@"
|
|
break
|
|
fi
|
|
done
|
|
echo "$0: error: did not find python installed" >&2
|
|
exit 1
|
|
'''
|
|
|
|
# The rest of this file is Python.
|
|
#
|
|
# This file is only a "symlink" to bootstrap.py, all logic should go there.
|
|
|
|
import os
|
|
import sys
|
|
|
|
# If this is python2, check if python3 is available and re-execute with that
|
|
# interpreter.
|
|
#
|
|
# `./x.py` would not normally benefit from this because the bash above tries
|
|
# python3 before 2, but this matters if someone ran `python x.py` and their
|
|
# system's `python` is python2.
|
|
if sys.version_info.major < 3:
|
|
try:
|
|
os.execvp("py", ["py", "-3"] + sys.argv)
|
|
except OSError:
|
|
try:
|
|
os.execvp("python3", ["python3"] + sys.argv)
|
|
except OSError:
|
|
# Python 3 isn't available, fall back to python 2
|
|
pass
|
|
|
|
rust_dir = os.path.dirname(os.path.abspath(__file__))
|
|
sys.path.append(os.path.join(rust_dir, "src", "bootstrap"))
|
|
|
|
import bootstrap
|
|
bootstrap.main()
|