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# 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 "1.8.20" 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)
ocv_update(OPENCV_GRADLE_VERBOSE_OPTIONS "-i")
separate_arguments(OPENCV_GRADLE_VERBOSE_OPTIONS UNIX_COMMAND "${OPENCV_GRADLE_VERBOSE_OPTIONS}")
macro(add_android_project target path)
get_filename_component(__dir "${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")
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)
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