Minimal Qt installer script

One of the main problems in virtual environments like Travis CI is how to
install Qt and QtCreator. The official installer provided by the Qt Company is
almost unusable from command line. It is even harder to select only certain
components (especially QtScript). Luckily, all components are available online
under http://download.qt.io.

This script installs components from the official Qt package repository. It can
be used in any bash environment to simplify the setup procedure and supports
every valid combination of host OS, target platform (desktop, android, ios) as
well as toolchains.

Dependencies:
- bash
- curl
- 7z

Change-Id: Ia2080cb80df98551332eb02c85c5933fd3bdaa4e
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

1 files changed, 298 insertions, 0 deletions

diff --git a/scripts/install-qt.sh b/scripts/install-qt.sh
new file mode 100755
index 000000000..c2793b3ce
--- /dev/null
+++ b/scripts/install-qt.sh
@@ -0,0 +1,298 @@
+#!/usr/bin/env bash
+#############################################################################
+##
+## Copyright (C) 2019 Richard Weickelt.
+## Contact: https://www.qt.io/licensing/
+##
+## This file is part of Qbs.
+##
+## $QT_BEGIN_LICENSE:LGPL$
+## Commercial License Usage
+## Licensees holding valid commercial Qt licenses may use this file in
+## accordance with the commercial license agreement provided with the
+## Software or, alternatively, in accordance with the terms contained in
+## a written agreement between you and The Qt Company. For licensing terms
+## and conditions see https://www.qt.io/terms-conditions. For further
+## information use the contact form at https://www.qt.io/contact-us.
+##
+## GNU Lesser General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU Lesser
+## General Public License version 3 as published by the Free Software
+## Foundation and appearing in the file LICENSE.LGPL3 included in the
+## packaging of this file. Please review the following information to
+## ensure the GNU Lesser General Public License version 3 requirements
+## will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+##
+## GNU General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU
+## General Public License version 2.0 or (at your option) the GNU General
+## Public license version 3 or any later version approved by the KDE Free
+## Qt Foundation. The licenses are as published by the Free Software
+## Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+## included in the packaging of this file. Please review the following
+## information to ensure the GNU General Public License requirements will
+## be met: https://www.gnu.org/licenses/gpl-2.0.html and
+## https://www.gnu.org/licenses/gpl-3.0.html.
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+set -eu
+
+function help() {
+    cat <<EOF
+usage: install-qt [options] [components]
+
+Examples
+  ./install-qt.sh --version 5.12.4 qtbase
+  ./install-qt.sh --version 5.12.4 --target android --toolchain android_arm64_v8a qtbase
+
+Positional arguments
+  components
+        SDK components to be installed. All possible components
+        can be found in the online repository at https://download.qt.io,
+        for instance: qtbase, qtdeclarative, qtscript, qttools, icu, ...
+
+        In addition to Qt packages, qtcreator is also accepted.
+
+        The actual availability of packages may differ depending on
+        target and toolchain.
+
+Options
+  --directory <directory>
+        Root directory where to install the components.
+        Maps to C:/Qt on Windows, /opt/Qt on Linux, /usr/local/Qt on Mac
+        by default.
+
+  --host <host-os>
+        The host operating system. Can be one of linux_x64, mac_x64,
+        windows_x86. Auto-detected by default.
+
+  --target <target-platform>
+        The desired target platform. Can be one of desktop, android, ios.
+        The default value is desktop.
+
+  --toolchain <toolchain-type>
+        The toolchain that has been used to build the binaries.
+        Possible values depend on --host and --target, respectively:
+
+            linux_x64
+                android
+                    android_armv7, android_arm64_v8a
+                desktop
+                    gcc_64 (default)
+
+            mac_x64
+                android
+                    android_armv7, android_arm64_v8a
+                desktop
+                    clang_64 (default),
+                ios
+                    ios
+
+            windows_x86
+                android
+                    android_armv7, android_arm64_v8a
+                desktop
+                    win64_mingw73, win64_msvc2017_64 (default)
+
+  --version <version>
+        The desired Qt version. Currently supported are all versions
+        above 5.9.0.
+
+EOF
+}
+
+TARGET_PLATFORM=desktop
+COMPONENTS=
+VERSION=
+
+case "$OSTYPE" in
+    *linux*)
+        HOST_OS=linux_x64
+        INSTALL_DIR=/opt/Qt
+        TOOLCHAIN=gcc_64
+        ;;
+    *darwin*)
+        HOST_OS=mac_x64
+        INSTALL_DIR=/usr/local/Qt
+        TOOLCHAIN=clang_64
+        ;;
+    msys)
+        HOST_OS=windows_x86
+        INSTALL_DIR=/c/Qt
+        TOOLCHAIN=win64_msvc2015_64
+        ;;
+    *)
+        HOST_OS=
+        INSTALL_DIR=
+        ;;
+esac
+
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --directory|-d)
+            INSTALL_DIR="$2"
+            shift
+            ;;
+        --host)
+            HOST_OS="$2"
+            shift
+            ;;
+        --target)
+            TARGET_PLATFORM="$2"
+            shift
+            ;;
+        --toolchain)
+            TOOLCHAIN="$2"
+            shift
+            ;;
+        --version)
+            VERSION="$2"
+            shift
+            ;;
+        --help|-h)
+            help
+            exit 0
+            ;;
+        *)
+            COMPONENTS="${COMPONENTS} $1"
+            ;;
+    esac
+    shift
+done
+
+if [ -z "${HOST_OS}" ]; then
+    echo "No --host specified or auto-detection failed." >&2
+    exit 1
+fi
+
+if [ -z "${INSTALL_DIR}" ]; then
+    echo "No --directory specified or auto-detection failed." >&2
+    exit 1
+fi
+
+if [ -z "${VERSION}" ]; then
+    echo "No --version specified." >&2
+    exit 1
+fi
+
+if [ -z "${COMPONENTS}" ]; then
+    echo "No components specified." >&2
+    exit 1
+fi
+
+case "$TARGET_PLATFORM" in
+    android)
+        ;;
+    ios)
+        ;;
+    desktop)
+        ;;
+    *)
+        echo "Error: TARGET_PLATFORM=${TARGET_PLATFORM} is not valid." >&2
+        exit 1
+        ;;
+esac
+
+DOWNLOAD_DIR=`mktemp -d 2>/dev/null || mktemp -d -t 'install-qt'`
+
+#
+# The repository structure is a mess. Try different URL variants
+#
+function compute_url(){
+    local COMPONENT=$1
+    local CURL="curl -s -L"
+    local BASE_URL="http://download.qt.io/online/qtsdkrepository/${HOST_OS}/${TARGET_PLATFORM}"
+
+    if [[ "${COMPONENT}" =~ "qtcreator" ]]; then
+
+        REMOTE_BASE="tools_qtcreator/qt.tools.qtcreator"
+        REMOTE_PATH="$(${CURL} ${BASE_URL}/${REMOTE_BASE}/ | grep -o -E "${VERSION}[0-9\-]*${COMPONENT}\.7z" | tail -1)"
+
+        if [ ! -z "${REMOTE_PATH}" ]; then
+            echo "${BASE_URL}/${REMOTE_BASE}/${REMOTE_PATH}"
+            return 0
+        fi
+
+    else
+        # New repository format (>=5.9.6)
+        REMOTE_BASE="qt5_${VERSION//./}/qt.qt5.${VERSION//./}.${TOOLCHAIN}"
+        REMOTE_PATH="$(${CURL} ${BASE_URL}/${REMOTE_BASE}/ | grep -o -E "[[:alnum:]_.\-]*7z" | grep "${COMPONENT}" | tail -1)"
+        echo "$BASE_URL/$REMOTE_BASE/$REMOTE_PATH" >&2
+
+        if [ ! -z "${REMOTE_PATH}" ]; then
+            echo "${BASE_URL}/${REMOTE_BASE}/${REMOTE_PATH}"
+            return 0
+        fi
+
+        REMOTE_BASE="qt5_${VERSION//./}/qt.qt5.${VERSION//./}.${COMPONENT}.${TOOLCHAIN}"
+        REMOTE_PATH="$(${CURL} ${BASE_URL}/${REMOTE_BASE}/ | grep -o -E "[[:alnum:]_.\-]*7z" | grep "${COMPONENT}" | tail -1)"
+
+        if [ ! -z "${REMOTE_PATH}" ]; then
+            echo "${BASE_URL}/${REMOTE_BASE}/${REMOTE_PATH}"
+            return 0
+        fi
+
+        # Older repository format (>=5.9.0)
+        REMOTE_BASE="qt5_${VERSION//./}/qt.${VERSION//./}.${TOOLCHAIN}"
+        REMOTE_PATH="$(${CURL} ${BASE_URL}/${REMOTE_BASE}/ | grep -o -E "[[:alnum:]_.\-]*7z" | grep "${COMPONENT}" | tail -1)"
+
+        if [ ! -z "${REMOTE_PATH}" ]; then
+            echo "${BASE_URL}/${REMOTE_BASE}/${REMOTE_PATH}"
+            return 0
+        fi
+
+        REMOTE_BASE="qt5_${VERSION//./}/qt.${VERSION//./}.${COMPONENT}.${TOOLCHAIN}"
+        REMOTE_PATH="$(${CURL} ${BASE_URL}/${REMOTE_BASE}/ | grep -o -E "[[:alnum:]_.\-]*7z" | grep "${COMPONENT}" | tail -1)"
+
+        if [ ! -z "${REMOTE_PATH}" ]; then
+            echo "${BASE_URL}/${REMOTE_BASE}/${REMOTE_PATH}"
+            return 0
+        fi
+
+    fi
+
+    echo "Could not determine a remote URL for ${COMPONENT} with version ${VERSION}">&2
+    exit 1
+}
+
+mkdir -p ${INSTALL_DIR}
+
+for COMPONENT in ${COMPONENTS}; do
+
+    URL="$(compute_url ${COMPONENT})"
+
+    echo "Downloading ${COMPONENT}..." >&2
+    curl --progress-bar -L -o ${DOWNLOAD_DIR}/package.7z ${URL} >&2
+    7z x -y -o${INSTALL_DIR} ${DOWNLOAD_DIR}/package.7z >/dev/null 2>&1
+    rm -f ${DOWNLOAD_DIR}/package.7z
+
+    #
+    # conf file is needed for qmake
+    #
+    if [ "${COMPONENT}" == "qtbase" ]; then
+        if [[ "${TOOLCHAIN}" =~ "win64_mingw" ]]; then
+            SUBDIR="${TOOLCHAIN/win64_/}_64"
+        elif [[ "${TOOLCHAIN}" =~ "win32_mingw" ]]; then
+            SUBDIR="${TOOLCHAIN/win32_/}_32"
+        elif [[ "${TOOLCHAIN}" =~ "win64_msvc" ]]; then
+            SUBDIR="${TOOLCHAIN/win64_/}"
+        elif [[ "${TOOLCHAIN}" =~ "win32_msvc" ]]; then
+            SUBDIR="${TOOLCHAIN/win32_/}"
+        else
+            SUBDIR="${TOOLCHAIN}"
+        fi
+
+        CONF_FILE="${INSTALL_DIR}/${VERSION}/${SUBDIR}/bin/qt.conf"
+        echo "[Paths]" > ${CONF_FILE}
+        echo "Prefix = .." >> ${CONF_FILE}
+
+        # Print the directory so that the caller can
+        # adjust the PATH variable.
+        echo $(dirname "${CONF_FILE}")
+    elif [[ "${COMPONENT}" =~ "qtcreator" ]]; then
+        echo "${INSTALL_DIR}/Tools/QtCreator/bin"
+    fi
+
+done