dart-sdk/sdk/bin/dart2js_sdk
William Hesse 634e5a1d02 Refs #25328 Use a portable shebang
BSD systems don't place bash in /bin and a lot of the dart tools
hardcode a #!/bin/bash shebang that fails the 'all' target build
(not able to execute dart2js since the interpreter is not found).

Solve the issue by using #!/usr/bin/env as the shebang. For scripts
that need to pass arguments to bash modify the script to use the set
command as the first executed line of shell.

BUG=
R=whesse@google.com

Review URL: https://codereview.chromium.org/1552313002 .
2016-01-05 16:26:28 +01:00

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#!/usr/bin/env bash
# Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
function follow_links() {
file="$1"
while [ -h "$file" ]; do
# On Mac OS, readlink -f doesn't work.
file="$(readlink "$file")"
done
echo "$file"
}
# Unlike $0, $BASH_SOURCE points to the absolute path of this file.
PROG_NAME="$(follow_links "$BASH_SOURCE")"
# Handle the case where dart-sdk/bin has been symlinked to.
BIN_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)"
SDK_DIR="$(cd "${BIN_DIR}/.." ; pwd -P)"
DART="$BIN_DIR/dart"
SNAPSHOT_DIR="$BIN_DIR/snapshots"
SNAPSHOT="$SNAPSHOT_DIR/dart2js.dart.snapshot"
unset EXTRA_OPTIONS
declare -a EXTRA_OPTIONS
if test -t 1; then
# Stdout is a terminal.
if test 8 -le `tput colors`; then
# Stdout has at least 8 colors, so enable colors.
EXTRA_OPTIONS+=('--enable-diagnostic-colors')
fi
fi
unset EXTRA_VM_OPTIONS
declare -a EXTRA_VM_OPTIONS
if test -f "$SNAPSHOT"; then
EXTRA_OPTIONS+=("--library-root=$SDK_DIR")
fi
case $0 in
*_developer)
EXTRA_VM_OPTIONS+=('--checked')
;;
esac
# We allow extra vm options to be passed in through an environment variable.
if [[ $DART_VM_OPTIONS ]]; then
read -a OPTIONS <<< "$DART_VM_OPTIONS"
EXTRA_VM_OPTIONS+=("${OPTIONS[@]}")
fi
exec "$DART" "${EXTRA_VM_OPTIONS[@]}" "$SNAPSHOT" "${EXTRA_OPTIONS[@]}" "$@"