mirror of
https://github.com/bensuperpc/dockcross.git
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Change to bash in shellcheck and rename dockcross script to dockcross.sh
Change to bash in shellcheck and rename dockcross script to dockcross.sh Signed-off-by: Bensuperpc <bensuperpc@gmail.com>
This commit is contained in:
267
imagefiles/dockcross.sh
Executable file
267
imagefiles/dockcross.sh
Executable file
@ -0,0 +1,267 @@
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#!/usr/bin/env bash
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DEFAULT_DOCKCROSS_IMAGE=dockcross/base # DO NOT MOVE THIS LINE (see entrypoint.sh)
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#------------------------------------------------------------------------------
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# Helpers
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#
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err() {
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echo -e >&2 "ERROR: $*\n"
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}
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die() {
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err "$*"
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exit 1
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}
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has() {
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# eg. has command update
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local kind=$1
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local name=$2
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type -t $kind:$name | grep -q function
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}
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# If OCI_EXE is not already set, search for a container executor (OCI stands for "Open Container Initiative")
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if [ -z "$OCI_EXE" ]; then
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if which docker >/dev/null 2>/dev/null; then
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OCI_EXE=docker
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elif which podman >/dev/null 2>/dev/null; then
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OCI_EXE=podman
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else
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die "Cannot find a container executor. Search for docker and podman."
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fi
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fi
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#------------------------------------------------------------------------------
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# Command handlers
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#
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command:update-image() {
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$OCI_EXE pull $FINAL_IMAGE
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}
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help:update-image() {
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echo Pull the latest $FINAL_IMAGE .
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}
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command:update-script() {
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if cmp -s <( $OCI_EXE run --rm $FINAL_IMAGE ) $0; then
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echo $0 is up to date
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else
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echo -n Updating $0 '... '
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$OCI_EXE run --rm $FINAL_IMAGE > $0 && echo ok
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fi
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}
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help:update-image() {
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echo Update $0 from $FINAL_IMAGE .
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}
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command:update() {
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command:update-image
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command:update-script
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}
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help:update() {
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echo Pull the latest $FINAL_IMAGE, and then update $0 from that.
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}
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command:help() {
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if [[ $# != 0 ]]; then
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if ! has command $1; then
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err \"$1\" is not an dockcross command
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command:help
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elif ! has help $1; then
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err No help found for \"$1\"
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else
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help:$1
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fi
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else
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cat >&2 <<ENDHELP
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Usage: dockcross [options] [--] command [args]
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By default, run the given *command* in an dockcross Docker container.
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The *options* can be one of:
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--args|-a Extra args to the *docker run* command
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--image|-i Docker cross-compiler image to use
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--config|-c Bash script to source before running this script
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Additionally, there are special update commands:
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update-image
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update-script
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update
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For update command help use: $0 help <command>
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ENDHELP
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exit 1
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fi
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}
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#------------------------------------------------------------------------------
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# Option processing
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#
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special_update_command=''
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while [[ $# != 0 ]]; do
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case $1 in
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--)
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shift
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break
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;;
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--args|-a)
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ARG_ARGS="$2"
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shift 2
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;;
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--config|-c)
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ARG_CONFIG="$2"
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shift 2
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;;
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--image|-i)
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ARG_IMAGE="$2"
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shift 2
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;;
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update|update-image|update-script)
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special_update_command=$1
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break
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;;
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-*)
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err Unknown option \"$1\"
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command:help
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exit
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;;
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*)
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break
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;;
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esac
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done
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# The precedence for options is:
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# 1. command-line arguments
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# 2. environment variables
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# 3. defaults
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# Source the config file if it exists
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DEFAULT_DOCKCROSS_CONFIG=~/.dockcross
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FINAL_CONFIG=${ARG_CONFIG-${DOCKCROSS_CONFIG-$DEFAULT_DOCKCROSS_CONFIG}}
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[[ -f "$FINAL_CONFIG" ]] && source "$FINAL_CONFIG"
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# Set the docker image
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FINAL_IMAGE=${ARG_IMAGE-${DOCKCROSS_IMAGE-$DEFAULT_DOCKCROSS_IMAGE}}
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# Handle special update command
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if [ "$special_update_command" != "" ]; then
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case $special_update_command in
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update)
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command:update
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exit $?
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;;
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update-image)
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command:update-image
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exit $?
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;;
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update-script)
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command:update-script
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exit $?
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;;
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esac
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fi
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# Set the docker run extra args (if any)
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FINAL_ARGS=${ARG_ARGS-${DOCKCROSS_ARGS}}
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# Bash on Ubuntu on Windows
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UBUNTU_ON_WINDOWS=$([ -e /proc/version ] && grep -l Microsoft /proc/version || echo "")
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# MSYS, Git Bash, etc.
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MSYS=$([ -e /proc/version ] && grep -l MINGW /proc/version || echo "")
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if [ -z "$UBUNTU_ON_WINDOWS" -a -z "$MSYS" ]; then
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USER_IDS=(-e BUILDER_UID="$( id -u )" -e BUILDER_GID="$( id -g )" -e BUILDER_USER="$( id -un )" -e BUILDER_GROUP="$( id -gn )")
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fi
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# Change the PWD when working in Docker on Windows
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if [ -n "$UBUNTU_ON_WINDOWS" ]; then
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WSL_ROOT="/mnt/"
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CFG_FILE=/etc/wsl.conf
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if [ -f "$CFG_FILE" ]; then
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CFG_CONTENT=$(cat $CFG_FILE | sed -r '/[^=]+=[^=]+/!d' | sed -r 's/\s+=\s/=/g')
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eval "$CFG_CONTENT"
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if [ -n "$root" ]; then
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WSL_ROOT=$root
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fi
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fi
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HOST_PWD=`pwd -P`
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HOST_PWD=${HOST_PWD/$WSL_ROOT//}
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elif [ -n "$MSYS" ]; then
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HOST_PWD=$PWD
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HOST_PWD=${HOST_PWD/\//}
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HOST_PWD=${HOST_PWD/\//:\/}
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else
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HOST_PWD=$PWD
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[ -L $HOST_PWD ] && HOST_PWD=$(readlink $HOST_PWD)
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fi
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# Mount Additional Volumes
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if [ -z "$SSH_DIR" ]; then
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SSH_DIR="$HOME/.ssh"
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fi
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HOST_VOLUMES=
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if [ -e "$SSH_DIR" -a -z "$MSYS" ]; then
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HOST_VOLUMES+="-v $SSH_DIR:/home/$(id -un)/.ssh"
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fi
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#------------------------------------------------------------------------------
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# Now, finally, run the command in a container
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#
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TTY_ARGS=
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tty -s && [ -z "$MSYS" ] && TTY_ARGS=-ti
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CONTAINER_NAME=dockcross_$RANDOM
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$OCI_EXE run $TTY_ARGS --name $CONTAINER_NAME \
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-v "$HOST_PWD":/work \
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$HOST_VOLUMES \
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"${USER_IDS[@]}" \
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$FINAL_ARGS \
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$FINAL_IMAGE "$@"
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run_exit_code=$?
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# Attempt to delete container
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rm_output=$($OCI_EXE rm -f $CONTAINER_NAME 2>&1)
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rm_exit_code=$?
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if [[ $rm_exit_code != 0 ]]; then
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if [[ "$CIRCLECI" == "true" ]] && [[ $rm_output == *"Driver btrfs failed to remove"* ]]; then
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: # Ignore error because of https://circleci.com/docs/docker-btrfs-error/
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else
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echo "$rm_output"
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exit $rm_exit_code
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fi
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fi
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exit $run_exit_code
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################################################################################
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#
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# This image is not intended to be run manually.
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#
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# To create a dockcross helper script for the
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# dockcross/linux-armv7 image, run:
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#
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# docker run --rm dockcross/linux-armv7 > dockcross-linux-armv7
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# chmod +x dockcross-linux-armv7
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#
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# You may then wish to move the dockcross script to your PATH.
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#
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################################################################################
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