1 files changed, 86 insertions, 0 deletions
diff --git a/find-modules/FindGradle.cmake b/find-modules/FindGradle.cmake
new file mode 100644
index 00000000..02ccf38a
--- /dev/null
+++ b/find-modules/FindGradle.cmake
@@ -0,0 +1,86 @@
+#.rst:
+# FindGradle
+# ----------
+#
+# Provides the ability to build Android AAR libraries using Gradle.
+#
+# This relies on the Qt provided Gradle, so a Qt for Android installation
+# is required.
+#
+#   gradle_add_aar(<target>
+#                  BUIDLFILE build.gradle
+#                  NAME <aar-name>)
+#
+# This builds an Android AAR library using the given ``build.gradle`` file.
+#
+#   gradle_install_aar(<target>
+#                      DESTINATION <dest>)
+#
+# Installs a Android AAR library that has been created with ``gradle_add_aar``.
+
+#=============================================================================
+# SPDX-FileCopyrightText: 2019 Volker Krause <vkrause@kde.org>
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#=============================================================================
+
+include(CMakeParseArguments)
+include(FindPackageHandleStandardArgs)
+
+find_package(Qt5Core REQUIRED)
+
+if (NOT WIN32)
+    set(Gradle_EXECUTABLE ${CMAKE_BINARY_DIR}/gradle/gradlew)
+else()
+    set(Gradle_EXECUTABLE ${CMAKE_BINARY_DIR}/gradle/gradlew.bat)
+endif()
+
+get_target_property(_qt_core_location Qt5::Core LOCATION)
+get_filename_component(_qt_install_root ${_qt_core_location} DIRECTORY)
+get_filename_component(_qt_install_root ${_qt_install_root}/../ ABSOLUTE)
+
+set(_gradle_template_dir ${CMAKE_CURRENT_LIST_DIR})
+
+add_custom_command(OUTPUT ${Gradle_EXECUTABLE}
+    COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/gradle
+    COMMAND ${CMAKE_COMMAND} -E copy_directory ${_qt_install_root}/src/3rdparty/gradle ${CMAKE_BINARY_DIR}/gradle
+)
+add_custom_target(gradle DEPENDS ${Gradle_EXECUTABLE})
+
+find_package_handle_standard_args(Gradle DEFAULT_MSG Gradle_EXECUTABLE)
+
+function(gradle_add_aar target)
+    cmake_parse_arguments(ARG "" "BUILDFILE;NAME" "" ${ARGN})
+
+    set(_build_root ${CMAKE_CURRENT_BINARY_DIR}/gradle_build/${ARG_NAME})
+    configure_file(${_gradle_template_dir}/local.properties.cmake ${_build_root}/local.properties)
+    configure_file(${_gradle_template_dir}/settings.gradle.cmake ${_build_root}/settings.gradle)
+    configure_file(${ARG_BUILDFILE} ${_build_root}/build.gradle)
+
+    if (CMAKE_BUILD_TYPE MATCHES "[Dd][Ee][Bb][Uu][Gg]")
+        set(_aar_suffix "-debug")
+        set(_aar_gradleCmd "assembleDebug")
+    else()
+        set(_aar_suffix "-release")
+        set(_aar_gradleCmd "assembleRelease")
+    endif()
+
+    file(GLOB_RECURSE _src_files CONFIGURE_DEPENDS "*")
+    add_custom_command(
+        OUTPUT ${_build_root}/build/outputs/aar/${ARG_NAME}${_aar_suffix}.aar
+        COMMAND ${Gradle_EXECUTABLE} ${_aar_gradleCmd}
+        DEPENDS ${Gradle_EXECUTABLE} ${_src_files}
+        DEPENDS gradle
+        WORKING_DIRECTORY ${_build_root}
+    )
+    add_custom_target(${target} ALL DEPENDS ${_build_root}/build/outputs/aar/${ARG_NAME}${_aar_suffix}.aar)
+    set_target_properties(${target} PROPERTIES LOCATION ${_build_root}/build/outputs/aar/${ARG_NAME}${_aar_suffix}.aar)
+    set_target_properties(${target} PROPERTIES OUTPUT_NAME ${ARG_NAME})
+endfunction()
+
+function(gradle_install_aar target)
+    cmake_parse_arguments(ARG "" "DESTINATION" "" ${ARGN})
+    get_target_property(_loc ${target} LOCATION)
+    get_target_property(_name ${target} OUTPUT_NAME)
+    install(FILES ${_loc} DESTINATION ${ARG_DESTINATION} RENAME ${_name}.aar)
+endfunction()