mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-21 14:23:45 +00:00
43 lines
1.2 KiB
Bash
Executable File
43 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
# 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 x.py shebang and have it consistently work. Instead we
|
|
# have a shell script to look for a python to run x.py.
|
|
|
|
set -eu
|
|
|
|
# syntax check
|
|
sh -n "$0"
|
|
|
|
realpath() {
|
|
if [ -d "$1" ]; then
|
|
CDPATH='' command cd "$1" && pwd -P
|
|
else
|
|
echo "$(realpath "$(dirname "$1")")/$(basename "$1")"
|
|
fi
|
|
}
|
|
|
|
xpy=$(dirname "$(realpath "$0")")/x.py
|
|
|
|
# On Windows, `py -3` sometimes works. We need to try it first because `python3`
|
|
# sometimes tries to launch the app store on Windows.
|
|
for SEARCH_PYTHON in py python3 python python2; do
|
|
if python=$(command -v $SEARCH_PYTHON) && [ -x "$python" ]; then
|
|
if [ $SEARCH_PYTHON = py ]; then
|
|
extra_arg="-3"
|
|
else
|
|
extra_arg=""
|
|
fi
|
|
exec "$python" $extra_arg "$xpy" "$@"
|
|
fi
|
|
done
|
|
|
|
python=$(bash -c "compgen -c python" | grep '^python[2-3]\.[0-9]\+$' | head -n1)
|
|
if ! [ "$python" = "" ]; then
|
|
exec "$python" "$xpy" "$@"
|
|
fi
|
|
|
|
echo "$0: error: did not find python installed" >&2
|
|
exit 1
|