| # Copyright 2020 The Pigweed Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| # use this file except in compliance with the License. You may obtain a copy of |
| # the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| # License for the specific language governing permissions and limitations under |
| # the License. |
| |
| # This script must be tested on bash, zsh, and dash. |
| |
| _abspath () { |
| python -c "import os.path; print(os.path.abspath('$@'))" |
| } |
| |
| # Users are not expected to set PW_CHECKOUT_ROOT, it's only used because it |
| # seems to be impossible to reliably determine the path to a sourced file in |
| # dash when sourced from a dash script instead of a dash interactive prompt. |
| # To reinforce that users should not be using PW_CHECKOUT_ROOT, it is cleared |
| # here after it is used, and other pw tools will complain if they see that |
| # variable set. |
| # TODO(mohrr) find out a way to do this without PW_CHECKOUT_ROOT. |
| if test -n "$PW_CHECKOUT_ROOT"; then |
| PW_SETUP_SCRIPT_PATH=$(_abspath "$PW_CHECKOUT_ROOT/pw_env_setup/bootstrap.sh") |
| unset PW_CHECKOUT_ROOT |
| # Shell: bash. |
| elif test -n "$BASH"; then |
| PW_SETUP_SCRIPT_PATH=$(_abspath $BASH_SOURCE) |
| # Shell: zsh. |
| elif test -n "$ZSH_NAME"; then |
| PW_SETUP_SCRIPT_PATH=$(_abspath ${(%):-%N}) |
| # Shell: dash. |
| elif test ${0##*/} = dash; then |
| PW_SETUP_SCRIPT_PATH=$(_abspath \ |
| $(lsof -p $$ -Fn0 | tail -1 | sed 's#^[^/]*##;')) |
| # If everything else fails, try $0. It could work. |
| else |
| PW_SETUP_SCRIPT_PATH=$(_abspath $0) |
| fi |
| |
| PW_ROOT=$(dirname $(dirname $PW_SETUP_SCRIPT_PATH)) |
| export PW_ROOT |
| |
| SETUP_SH="$PW_ROOT/pw_env_setup/.setup.sh" |
| |
| # Try to use Python 3 if possible by default, before Python 2. |
| if which python3 &> /dev/null; then |
| PYTHON=python3 |
| else |
| PYTHON=python |
| fi |
| |
| # Run full bootstrap when invoked as bootstrap, or env file is missing/empty. |
| if \ |
| [ $(basename $PW_SETUP_SCRIPT_PATH) = "bootstrap.sh" ] || \ |
| [ ! -f $SETUP_SH ] || \ |
| [ ! -s $SETUP_SH ]; then |
| $PYTHON $PW_ROOT/pw_env_setup/py/pw_env_setup/env_setup.py --shell-file $SETUP_SH |
| fi |
| |
| . $SETUP_SH |