Ports/qt6: Add a very basic Qt6 Base package

It's necessary to have a working serenity platform plugin for it to work
with GUI applications

Ports/qt6-qtbase/package.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port=qt6-qtbase
+version=6.2.2
+workdir=qtbase-everywhere-src-${version}
+useconfigure=true
+files="https://download.qt.io/official_releases/qt/$(cut -d. -f1,2 <<< ${version})/${version}/submodules/qtbase-everywhere-src-${version}.tar.xz qt6-qtbase-${version}.tar.xz 85ab9180180c2eaf84cd11ae4c6d5a6a69f2f8fd7260aaccfd91a3e7e7232c1a"
+auth_type="sha256"
+configopts=(
+    "-GNinja"
+    "-DCMAKE_TOOLCHAIN_FILE=${SERENITY_BUILD_DIR}/CMakeToolchain.txt"
+    "-DCMAKE_CROSSCOMPILING=ON"
+    "-DQT_BUILD_TOOLS_WHEN_CROSSCOMPILING=ON"
+    "-DQT_HOST_PATH=/usr"
+    "-DQT_FEATURE_cxx20=ON"
+    "-DINPUT_opengl=no"
+)
+
+QT_HOST_PATH=/usr
+QT_HOST_CMAKE_PATH=${QT_HOST_PATH}/lib64/cmake
+QT_HOST_TOOLS="HostInfo CoreTools GuiTools WidgetsTools"
+QT_HOST_TOOLS_PATH="${QT_HOST_CMAKE_PATH}/Qt6%s/\n"
+
+QT_DISABLED_FEATURES="sql opengl dbus systemsemaphore sharedmemory thread network"
+
+configure() {
+    for host_tool in ${QT_HOST_TOOLS}; do
+        if [[ ! -d $(printf $QT_HOST_TOOLS_PATH $host_tool) ]]; then
+            echo "You need to have Qt $version installed on the host (path "$(printf $QT_HOST_TOOLS_PATH $host_tool)" is missing)"
+            exit 1
+        fi
+    done
+
+    MERGED_HOST_TOOLS=$(for host_tool in ${QT_HOST_TOOLS}; do echo "-DQt6${host_tool}_DIR=${QT_HOST_CMAKE_PATH}/Qt6${host_tool}/"; done)
+    MERGED_DISABLED_FEATURES=$(for feature in ${QT_DISABLED_FEATURES}; do echo "-DQT_FEATURE_${feature}=OFF"; done)
+
+    run cmake ${configopts[@]} ${MERGED_HOST_TOOLS} ${MERGED_DISABLED_FEATURES}
+}
+
+build() {
+    run ninja
+}
+
+install() {
+    run ninja install
+
+    echo "================================================================================"
+    echo "|                                 NOTICE                                       |"
+    echo "================================================================================"
+    echo -e "You have just installed a testing build of Qt $version.\n"
+    echo -e "GUI applications won't work without QSerenityPlatform!"
+    echo -e "\t" "It's packaged as qt6-serenity"
+    echo "The following Qt modules are disabled for now:"
+    echo -e "\t" "$QT_DISABLED_FEATURES"
+    echo "Work on enabling Qt modules will be happening here:"
+    echo -e "\t" "https://github.com/SerenityOS/serenity/tree/master/Ports/qt6-qtbase"
+    echo "The development of the Qt Serenity platform plugin is happening here. Fixes for things like input handling, window management and theme integration should go here:"
+    echo -e "\t" "https://github.com/SerenityPorts/QSerenityPlatform"
+}
+
+clean() {
+    run ninja clean
+}