build-app

#!/bin/bash
set -euo pipefail

PROGNAME=$(basename $0)
DESCRIPTION="
Provides all the steps to build the application. This script is called by the
CI to build the application, but you can run it on your local machine as well.
"

pushd $PWD > /dev/null
cd $(dirname $0)/..
SRC_DIR=$PWD
popd > /dev/null

CI_DIR=$SRC_DIR/ci
WORK_DIR=${WORK_DIR:-$SRC_DIR/_work}
BUILD_DIR=$WORK_DIR/build
INSTALL_DIR=$WORK_DIR/install
ENV_FILE=$WORK_DIR/env.sh

BUILD_TYPE=Release
BUILD_CMD="cmake --build $BUILD_DIR --config $BUILD_TYPE"

. $CI_DIR/lib/common.sh
# Call this function here because we need $OS to load the right
# OS-dependencies.sh file
detect_os

. $CI_DIR/lib/common-dependencies.sh
. $CI_DIR/lib/$OS-dependencies.sh

#- Build steps ----------------------------------------------------------------
step_install-dependencies() {
    echo_title "Installing dependencies"
    # The install_dependencies() function can define environment variables to
    # help the other steps do their work: adding directories to $PATH or
    # defining the installation directory of libraries so that the build step
    # can find them.
    > $ENV_FILE
    install_dependencies
}

step_build() {
    echo_title Configuring
    . $ENV_FILE
    mkdir $BUILD_DIR
    cd $BUILD_DIR
    cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_INSTALL_PREFIX=$INSTALL_DIR $SRC_DIR

    echo_title Updating translations
    $BUILD_CMD --target lupdate

    echo_title Building
    $BUILD_CMD --parallel $NPROC
}

step_tests() {
    echo_title Running tests
    . $ENV_FILE
    local test_cmd="$BUILD_CMD --target check"
    if is_linux && [ -z "${DISPLAY:-}" ] ; then
        xvfb-run $CI_DIR/lib/headless-test-helper $test_cmd
    else
        $test_cmd
    fi
}

step_install() {
    echo_title Installing
    $BUILD_CMD --target install
}

step_binary-packages() {
    echo_title "Creating binary packages"
    $BUILD_CMD --target package
}

step_source-package() {
    echo_title "Creating source package"
    $BUILD_CMD --target package_source
}

#- Main -----------------------------------------------------------------------
check_step_exists() {
    [ $(type -t "step_$1") = "function" ]
}

usage() {
    if [ "$*" != "" ] ; then
        echo "Error: $*"
    fi

    cat << EOF
Usage: $PROGNAME [OPTION ...] [steps...]
$DESCRIPTION
Options:
  -h, --help          display this usage message and exit

Steps:
EOF
    grep '^step_[-a-z]*() {' $CI_DIR/$PROGNAME | sed -e 's/step_/  /' -e 's/() {//'

    exit 1
}

main() {
    init_run_as_root
    init_nproc
    init_python_cmd

    steps=""
    while [ $# -gt 0 ] ; do
        case "$1" in
        -h|--help)
            usage
            ;;
        *)
            check_step_exists $1 || usage "Unknown step '$1'"
            steps="$steps step_$1"
            ;;
        esac
        shift
    done

    mkdir -p $WORK_DIR
    mkdir -p $INSTALL_DIR

    for step in $steps ; do
        $step
    done
}

main $@