# https://developer.android.com/studio/releases/gradle-plugin set(ANDROID_GRADLE_PLUGIN_VERSION "7.3.1" CACHE STRING "Android Gradle Plugin version") message(STATUS "Android Gradle Plugin version: ${ANDROID_GRADLE_PLUGIN_VERSION}") set(KOTLIN_PLUGIN_VERSION "1.5.20" CACHE STRING "Kotlin Plugin version") message(STATUS "Kotlin Plugin version: ${KOTLIN_PLUGIN_VERSION}") if(BUILD_KOTLIN_EXTENSIONS) set(KOTLIN_PLUGIN_DECLARATION "apply plugin: 'kotlin-android'" CACHE STRING "Kotlin Plugin version") set(KOTLIN_STD_LIB "implementation 'org.jetbrains.kotlin:kotlin-stdlib:${KOTLIN_PLUGIN_VERSION}'" CACHE STRING "Kotlin Standard Library dependency") else() set(KOTLIN_PLUGIN_DECLARATION "" CACHE STRING "Kotlin Plugin version") set(KOTLIN_STD_LIB "" CACHE STRING "Kotlin Standard Library dependency") endif() set(GRADLE_VERSION "7.6.3" CACHE STRING "Gradle version") message(STATUS "Gradle version: ${GRADLE_VERSION}") set(ANDROID_COMPILE_SDK_VERSION "31" CACHE STRING "Android compileSdkVersion") if(ANDROID_NATIVE_API_LEVEL GREATER 21) set(ANDROID_MIN_SDK_VERSION "${ANDROID_NATIVE_API_LEVEL}" CACHE STRING "Android minSdkVersion") else() set(ANDROID_MIN_SDK_VERSION "21" CACHE STRING "Android minSdkVersion") endif() set(ANDROID_TARGET_SDK_VERSION "31" CACHE STRING "Android minSdkVersion") set(ANDROID_BUILD_BASE_DIR "${OpenCV_BINARY_DIR}/opencv_android" CACHE INTERNAL "") set(ANDROID_TMP_INSTALL_BASE_DIR "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/install/opencv_android") set(ANDROID_INSTALL_SAMPLES_DIR "samples") set(ANDROID_BUILD_ABI_FILTER " reset() include '${ANDROID_ABI}' ") set(ANDROID_INSTALL_ABI_FILTER " //reset() //include 'armeabi-v7a' //include 'arm64-v8a' //include 'x86' //include 'x86_64' ") if(NOT INSTALL_CREATE_DISTRIB) set(ANDROID_INSTALL_ABI_FILTER "${ANDROID_BUILD_ABI_FILTER}") endif() # BUG: Ninja generator generates broken targets with ANDROID_ABI_FILTER name (CMake 3.11.2) #set(__spaces " ") #string(REPLACE "\n" "\n${__spaces}" ANDROID_ABI_FILTER "${__spaces}${ANDROID_BUILD_ABI_FILTER}") #string(REPLACE REGEX "[ ]+$" "" ANDROID_ABI_FILTER "${ANDROID_ABI_FILTER}") set(ANDROID_ABI_FILTER "${ANDROID_BUILD_ABI_FILTER}") set(ANDROID_STRICT_BUILD_CONFIGURATION "true") configure_file("${OpenCV_SOURCE_DIR}/samples/android/build.gradle.in" "${ANDROID_BUILD_BASE_DIR}/build.gradle" @ONLY) set(ANDROID_ABI_FILTER "${ANDROID_INSTALL_ABI_FILTER}") set(ANDROID_STRICT_BUILD_CONFIGURATION "false") configure_file("${OpenCV_SOURCE_DIR}/samples/android/build.gradle.in" "${ANDROID_TMP_INSTALL_BASE_DIR}/${ANDROID_INSTALL_SAMPLES_DIR}/build.gradle" @ONLY) install(FILES "${ANDROID_TMP_INSTALL_BASE_DIR}/${ANDROID_INSTALL_SAMPLES_DIR}/build.gradle" DESTINATION "${ANDROID_INSTALL_SAMPLES_DIR}" COMPONENT samples) configure_file("${OpenCV_SOURCE_DIR}/platforms/android/gradle-wrapper/gradle/wrapper/gradle-wrapper.properties.in" "${ANDROID_BUILD_BASE_DIR}/gradle/wrapper/gradle-wrapper.properties" @ONLY) install(FILES "${ANDROID_BUILD_BASE_DIR}/gradle/wrapper/gradle-wrapper.properties" DESTINATION "${ANDROID_INSTALL_SAMPLES_DIR}/gradle/wrapper" COMPONENT samples) set(GRADLE_WRAPPER_FILES "gradle/wrapper/gradle-wrapper.jar" "gradlew.bat" "gradlew" "gradle.properties" ) foreach(fname ${GRADLE_WRAPPER_FILES}) get_filename_component(__dir "${fname}" DIRECTORY) set(__permissions "") set(__permissions_prefix "") if(fname STREQUAL "gradlew") set(__permissions FILE_PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE) endif() file(COPY "${OpenCV_SOURCE_DIR}/platforms/android/gradle-wrapper/${fname}" DESTINATION "${ANDROID_BUILD_BASE_DIR}/${__dir}" ${__permissions}) string(REPLACE "FILE_PERMISSIONS" "PERMISSIONS" __permissions "${__permissions}") if("${__dir}" STREQUAL "") set(__dir ".") endif() install(FILES "${OpenCV_SOURCE_DIR}/platforms/android/gradle-wrapper/${fname}" DESTINATION "${ANDROID_INSTALL_SAMPLES_DIR}/${__dir}" COMPONENT samples ${__permissions}) endforeach() # set build.gradle namespace if(NOT (ANDROID_GRADLE_PLUGIN_VERSION VERSION_LESS "7.3.0")) ocv_update(OPENCV_ANDROID_NAMESPACE_DECLARATION "namespace 'org.opencv'") else() ocv_update(OPENCV_ANDROID_NAMESPACE_DECLARATION "") endif() if(NOT (ANDROID_GRADLE_PLUGIN_VERSION VERSION_LESS "8.0.0")) # AGP-8.0 requires a minimum JDK version of JDK17 ocv_update(ANDROID_GRADLE_JAVA_VERSION_INIT "17") else() ocv_update(ANDROID_GRADLE_JAVA_VERSION_INIT "1_8") endif() set(ANDROID_GRADLE_JAVA_VERSION "${ANDROID_GRADLE_JAVA_VERSION_INIT}" CACHE STRING "Android Gradle Java version") message(STATUS "Android Gradle Java version: ${ANDROID_GRADLE_JAVA_VERSION}") # force reusing of the same CMake version if(NOT OPENCV_SKIP_ANDROID_FORCE_CMAKE) if(NOT DEFINED _CMAKE_INSTALL_DIR) get_filename_component(_CMAKE_INSTALL_DIR "${CMAKE_ROOT}" PATH) get_filename_component(_CMAKE_INSTALL_DIR "${_CMAKE_INSTALL_DIR}" PATH) endif() ocv_update_file("${ANDROID_BUILD_BASE_DIR}/local.properties" "cmake.dir=${_CMAKE_INSTALL_DIR}\nndk.dir=${ANDROID_NDK}") endif() file(WRITE "${ANDROID_BUILD_BASE_DIR}/settings.gradle" " gradle.ext { // possible options: 'maven_central', 'maven_local', 'sdk_path' opencv_source = 'sdk_path' } include ':opencv' ") file(WRITE "${ANDROID_TMP_INSTALL_BASE_DIR}/settings.gradle" " rootProject.name = 'opencv_samples' gradle.ext { // possible options: 'maven_central', 'maven_local', 'sdk_path' opencv_source = 'sdk_path' } if (gradle.opencv_source == 'maven_local') { gradle.ext { opencv_maven_path = '<path_to_maven_repo>' } } if (gradle.opencv_source == 'sdk_path') { def opencvsdk = '../' //def opencvsdk='/<path to OpenCV-android-sdk>' //println opencvsdk include ':opencv' project(':opencv').projectDir = new File(opencvsdk + '/sdk') } ") ocv_check_environment_variables(OPENCV_GRADLE_VERBOSE_OPTIONS) macro(add_android_project target path) get_filename_component(__dir "${path}" NAME) set(OPENCV_ANDROID_CMAKE_EXTRA_ARGS "") if(DEFINED ANDROID_TOOLCHAIN) set(OPENCV_ANDROID_CMAKE_EXTRA_ARGS "${OPENCV_ANDROID_CMAKE_EXTRA_ARGS},\n\"-DANDROID_TOOLCHAIN=${ANDROID_TOOLCHAIN}\"") endif() if(DEFINED ANDROID_STL) set(OPENCV_ANDROID_CMAKE_EXTRA_ARGS "${OPENCV_ANDROID_CMAKE_EXTRA_ARGS},\n\"-DANDROID_STL=${ANDROID_STL}\"") endif() # # Build # set(ANDROID_SAMPLE_JNI_PATH "${path}/jni") set(ANDROID_SAMPLE_JAVA_PATH "${path}/src") set(ANDROID_SAMPLE_RES_PATH "${path}/res") set(ANDROID_SAMPLE_MANIFEST_PATH "${path}/gradle/AndroidManifest.xml") set(ANDROID_ABI_FILTER "${ANDROID_BUILD_ABI_FILTER}") set(ANDROID_PROJECT_JNI_PATH "../../") string(REPLACE ";" "', '" ANDROID_SAMPLE_JAVA_PATH "['${ANDROID_SAMPLE_JAVA_PATH}']") string(REPLACE ";" "', '" ANDROID_SAMPLE_RES_PATH "['${ANDROID_SAMPLE_RES_PATH}']") configure_file("${path}/build.gradle.in" "${ANDROID_BUILD_BASE_DIR}/${__dir}/build.gradle" @ONLY) file(APPEND "${ANDROID_BUILD_BASE_DIR}/settings.gradle" " include ':${__dir}' ") if (BUILD_ANDROID_EXAMPLES) # build apk set(APK_FILE "${ANDROID_BUILD_BASE_DIR}/${__dir}/build/outputs/apk/release/${__dir}-${ANDROID_ABI}-release-unsigned.apk") ocv_update(OPENCV_GRADLE_VERBOSE_OPTIONS "-i") add_custom_command( OUTPUT "${APK_FILE}" "${OPENCV_DEPHELPER}/android_sample_${__dir}" COMMAND ./gradlew ${OPENCV_GRADLE_VERBOSE_OPTIONS} "${__dir}:assemble" COMMAND ${CMAKE_COMMAND} -E touch "${OPENCV_DEPHELPER}/android_sample_${__dir}" WORKING_DIRECTORY "${ANDROID_BUILD_BASE_DIR}" DEPENDS ${depends} opencv_java_android COMMENT "Building OpenCV Android sample project: ${__dir}" ) else() # install only # copy samples add_custom_command( OUTPUT "${OPENCV_DEPHELPER}/android_sample_${__dir}" COMMAND ${CMAKE_COMMAND} -E touch "${OPENCV_DEPHELPER}/android_sample_${__dir}" WORKING_DIRECTORY "${ANDROID_BUILD_BASE_DIR}" DEPENDS ${depends} opencv_java_android COMMENT "Copying OpenCV Android sample project: ${__dir}" ) endif() file(REMOVE "${OPENCV_DEPHELPER}/android_sample_${__dir}") # force rebuild after CMake run add_custom_target(android_sample_${__dir} ALL DEPENDS "${OPENCV_DEPHELPER}/android_sample_${__dir}" SOURCES "${ANDROID_SAMPLE_MANIFEST_PATH}") # # Install # set(ANDROID_SAMPLE_JNI_PATH "jni") set(ANDROID_SAMPLE_JAVA_PATH "src") set(ANDROID_SAMPLE_RES_PATH "res") set(ANDROID_SAMPLE_MANIFEST_PATH "AndroidManifest.xml") install(DIRECTORY "${path}/res" DESTINATION "${ANDROID_INSTALL_SAMPLES_DIR}/${__dir}" COMPONENT samples OPTIONAL) install(DIRECTORY "${path}/src" DESTINATION "${ANDROID_INSTALL_SAMPLES_DIR}/${__dir}" COMPONENT samples) install(DIRECTORY "${path}/jni" DESTINATION "${ANDROID_INSTALL_SAMPLES_DIR}/${__dir}" COMPONENT samples OPTIONAL) install(FILES "${path}/gradle/AndroidManifest.xml" DESTINATION "${ANDROID_INSTALL_SAMPLES_DIR}/${__dir}" COMPONENT samples) set(ANDROID_ABI_FILTER "${ANDROID_INSTALL_ABI_FILTER}") set(ANDROID_PROJECT_JNI_PATH "native/jni") string(REPLACE ";" "', '" ANDROID_SAMPLE_JAVA_PATH "['${ANDROID_SAMPLE_JAVA_PATH}']") string(REPLACE ";" "', '" ANDROID_SAMPLE_RES_PATH "['${ANDROID_SAMPLE_RES_PATH}']") configure_file("${path}/build.gradle.in" "${ANDROID_TMP_INSTALL_BASE_DIR}/${__dir}/build.gradle" @ONLY) install(FILES "${ANDROID_TMP_INSTALL_BASE_DIR}/${__dir}/build.gradle" DESTINATION "${ANDROID_INSTALL_SAMPLES_DIR}/${__dir}" COMPONENT samples) file(APPEND "${ANDROID_TMP_INSTALL_BASE_DIR}/settings.gradle" " include ':${__dir}' ") endmacro() install(FILES "${ANDROID_TMP_INSTALL_BASE_DIR}/settings.gradle" DESTINATION "${ANDROID_INSTALL_SAMPLES_DIR}" COMPONENT samples)