Make it possible to build several apk out of a project

Summary:
Refactor the apk-generating code into a separate function, in views of
eventually even make it a module.
It also changes so that if no APK dir is specified, a generic dummy one is
used. Useful for proofs of concept.

Test Plan: Built kate, got kate and kwrite apks

Reviewers: #frameworks, #build_system, vkrause

Reviewed By: vkrause

Subscribers: vkrause

Tags: #frameworks, #build_system

Differential Revision: https://phabricator.kde.org/D12150

1 files changed, 65 insertions, 0 deletions

diff --git a/toolchain/ECMAndroidDeployQt.cmake b/toolchain/ECMAndroidDeployQt.cmake
new file mode 100644
index 00000000..70319914
--- /dev/null
+++ b/toolchain/ECMAndroidDeployQt.cmake
@@ -0,0 +1,65 @@
+find_package(Qt5Core REQUIRED)
+
+function(ecm_androiddeployqt QTANDROID_EXPORTED_TARGET ECM_ADDITIONAL_FIND_ROOT_PATH ANDROID_APK_DIR)
+    if(NOT ANDROID_APK_DIR)
+        get_filename_component(_qt5Core_install_prefix "${Qt5_DIR}/../../../" ABSOLUTE)
+        set(ANDROID_APK_DIR "${_qt5Core_install_prefix}/src/android/templates/")
+    endif()
+
+    set(EXPORT_DIR "${CMAKE_BINARY_DIR}/${QTANDROID_EXPORTED_TARGET}_build_apk/")
+    set(EXECUTABLE_DESTINATION_PATH "${EXPORT_DIR}/libs/${CMAKE_ANDROID_ARCH_ABI}/lib${QTANDROID_EXPORTED_TARGET}.so")
+    set(QML_IMPORT_PATHS "")
+    foreach(prefix ${ECM_ADDITIONAL_FIND_ROOT_PATH})
+        # qmlimportscanner chokes on symlinks, so we need to resolve those first
+        get_filename_component(qml_path "${prefix}/lib/qml" REALPATH)
+        if(EXISTS ${qml_path})
+            if (QML_IMPORT_PATHS)
+                set(QML_IMPORT_PATHS "${QML_IMPORT_PATHS},${qml_path}")
+            else()
+                set(QML_IMPORT_PATHS "${qml_path}")
+            endif()
+        endif()
+    endforeach()
+
+    set(EXTRA_PREFIX_DIRS "")
+    foreach(prefix ${ECM_ADDITIONAL_FIND_ROOT_PATH})
+        if (EXTRA_PREFIX_DIRS)
+            set(EXTRA_PREFIX_DIRS "${EXTRA_PREFIX_DIRS}, \"${prefix}\"")
+        else()
+            set(EXTRA_PREFIX_DIRS "\"${prefix}\"")
+        endif()
+    endforeach()
+    string(TOLOWER "${CMAKE_HOST_SYSTEM_NAME}" _LOWER_CMAKE_HOST_SYSTEM_NAME)
+    configure_file("${_CMAKE_ANDROID_DIR}/deployment-file.json.in" "${QTANDROID_EXPORTED_TARGET}-deployment.json.in")
+
+    if (CMAKE_GENERATOR STREQUAL "Unix Makefiles")
+        set(arguments "\\$(ARGS)")
+    endif()
+
+    function(havestl var access VALUE)
+        if (NOT VALUE STREQUAL "")
+            file(WRITE ${CMAKE_BINARY_DIR}/stl "${VALUE}")
+        endif()
+    endfunction()
+    variable_watch(CMAKE_CXX_STANDARD_LIBRARIES havestl)
+
+    if (NOT TARGET create-apk)
+        add_custom_target(create-apk)
+    endif()
+
+    set(CREATEAPK_TARGET_NAME "create-apk-${QTANDROID_EXPORTED_TARGET}")
+    add_custom_target(${CREATEAPK_TARGET_NAME}
+        COMMAND cmake -E echo "Generating $<TARGET_NAME:${QTANDROID_EXPORTED_TARGET}> with $<TARGET_FILE_DIR:Qt5::qmake>/androiddeployqt"
+        COMMAND cmake -E remove_directory "${EXPORT_DIR}"
+        COMMAND cmake -E copy_directory "${ANDROID_APK_DIR}" "${EXPORT_DIR}"
+        COMMAND cmake -E copy "$<TARGET_FILE:${QTANDROID_EXPORTED_TARGET}>" "${EXECUTABLE_DESTINATION_PATH}"
+        COMMAND LANG=C cmake "-DTARGET=$<TARGET_FILE:${QTANDROID_EXPORTED_TARGET}>" -P ${_CMAKE_ANDROID_DIR}/hasMainSymbol.cmake
+        COMMAND LANG=C cmake -DINPUT_FILE="${QTANDROID_EXPORTED_TARGET}-deployment.json.in" -DOUTPUT_FILE="${QTANDROID_EXPORTED_TARGET}-deployment.json" "-DTARGET=$<TARGET_FILE:${QTANDROID_EXPORTED_TARGET}>" "-DOUTPUT_DIR=$<TARGET_FILE_DIR:${QTANDROID_EXPORTED_TARGET}>" "-DEXPORT_DIR=${CMAKE_INSTALL_PREFIX}" "-DECM_ADDITIONAL_FIND_ROOT_PATH=\"${ECM_ADDITIONAL_FIND_ROOT_PATH}\"" -P ${_CMAKE_ANDROID_DIR}/specifydependencies.cmake
+        COMMAND $<TARGET_FILE_DIR:Qt5::qmake>/androiddeployqt --gradle --input "${QTANDROID_EXPORTED_TARGET}-deployment.json" --output "${EXPORT_DIR}" --deployment bundled ${arguments}
+    )
+
+    add_custom_target(install-apk-${QTANDROID_EXPORTED_TARGET}
+        COMMAND adb install -r "${EXPORT_DIR}/build/outputs/apk/${QTANDROID_EXPORTED_TARGET}_build_apk-debug.apk"
+    )
+    add_dependencies(create-apk ${CREATEAPK_TARGET_NAME})
+endfunction()