Merge pull request #26057 from asmorkalov:as/android_16k_pages

Android builds update #26057

Fixes https://github.com/opencv/opencv/issues/26027
Should also address https://github.com/opencv/opencv/issues/26542
 
Changes:
- Switched to Android build tools 34, NDK 26d, target API level 34 (required by Google Play).
- Use flexible page size on Android by default to support Android 15+.
- Dummy stub for R and BuildConfig classes for javadoc.
- Java 17 everywhere.
- Strict ndkVersion and ABI list in release package.

Related:
- Docker: https://github.com/opencv-infrastructure/opencv-gha-dockerfile/pull/41
- Pipeline: https://github.com/opencv/ci-gha-workflow/pull/183

Related IPP issue with NDK 27+: https://github.com/opencv/opencv/issues/26072

Google documentation for 16kb pages support : https://developer.android.com/guide/practices/page-sizes?hl=en

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake

samples/android/build.gradle.in

@@ -99,7 +99,7 @@ gradle.afterProject { project ->
         // Android Gradle Plugin (AGP) 3.5+ is required
         // https://github.com/android/ndk-samples/wiki/Configure-NDK-Path
         def isNdkVersionSupported = project.android.metaClass.getProperties().find { it.name == 'ndkVersion' } != null
-        if ((false || opencv_strict_build_configuration) && isNdkVersionSupported) {
+        if (opencv_strict_build_configuration && isNdkVersionSupported) {
             gradle.println("Override ndkVersion for the project ${project.name}")
             project.android {
                 ndkVersion '@ANDROID_NDK_REVISION@'

samples/android/tutorial-2-mixedprocessing/build.gradle.in

@@ -14,10 +14,11 @@ android {
             cmake {
                 if (gradle.opencv_source == "sdk_path") {
                     arguments "-DOpenCV_DIR=" + project(':opencv').projectDir + "/@ANDROID_PROJECT_JNI_PATH@",
+                              "-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON",
                               "-DOPENCV_FROM_SDK=TRUE"@OPENCV_ANDROID_CMAKE_EXTRA_ARGS@
-
                 } else {
                     arguments "-DOPENCV_VERSION_MAJOR=@OPENCV_VERSION_MAJOR@",
+                              "-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON",
                               "-DOPENCV_FROM_SDK=FALSE"@OPENCV_ANDROID_CMAKE_EXTRA_ARGS@
                 }
                 targets "mixed_sample"

samples/android/tutorial-2-mixedprocessing/jni/CMakeLists.txt

@@ -14,6 +14,14 @@ endif()
 message(STATUS "ANDROID_ABI=${ANDROID_ABI}")
 find_package(OpenCV REQUIRED COMPONENTS ${ANDROID_OPENCV_COMPONENTS})
 
+# For 16k pages support with NDK prior 27
+# Details: https://developer.android.com/guide/practices/page-sizes?hl=en
+if(ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES)
+  if(ANDROID_ABI STREQUAL arm64-v8a OR ANDROID_ABI STREQUAL x86_64)
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,max-page-size=16384")
+  endif()
+endif()
+
 file(GLOB srcs *.cpp *.c)
 file(GLOB hdrs *.hpp *.h)
 

samples/android/tutorial-4-opencl/build.gradle.in

@@ -15,11 +15,13 @@ android {
                 if (gradle.opencv_source == "sdk_path") {
                     arguments "-DOpenCV_DIR=" + project(':opencv').projectDir + "/@ANDROID_PROJECT_JNI_PATH@",
                               "-DOPENCV_FROM_SDK=TRUE",
+                              "-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON",
                               "-DANDROID_OPENCL_SDK=@ANDROID_OPENCL_SDK@" @OPENCV_ANDROID_CMAKE_EXTRA_ARGS@
 
                 } else {
                     arguments "-DOPENCV_VERSION_MAJOR=@OPENCV_VERSION_MAJOR@",
                               "-DOPENCV_FROM_SDK=FALSE",
+                              "-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON",
                               "-DANDROID_OPENCL_SDK=@ANDROID_OPENCL_SDK@" @OPENCV_ANDROID_CMAKE_EXTRA_ARGS@
                 }
                 targets "JNIpart"

samples/android/tutorial-4-opencl/jni/CMakeLists.txt

@@ -18,6 +18,14 @@ find_package(OpenCL QUIET)
 file(GLOB srcs *.cpp *.c)
 file(GLOB hdrs *.hpp *.h)
 
+# For 16k pages support with NDK prior 27
+# Details: https://developer.android.com/guide/practices/page-sizes?hl=en
+if(ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES)
+  if(ANDROID_ABI STREQUAL arm64-v8a OR ANDROID_ABI STREQUAL x86_64)
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,max-page-size=16384")
+  endif()
+endif()
+
 include_directories("${CMAKE_CURRENT_LIST_DIR}")
 add_library(${target} SHARED ${srcs} ${hdrs})