Android NDK 23b LTS Compile Error

[danoli3]

Hey! Please advise changes required I can PR fixes

Following Error for arm64/x86/x86_64 when targeting NDK 23b

Error at /opt/homebrew/Cellar/cmake/3.22.1/share/cmake/Modules/Platform/Android-Determine.cmake:584 (message):
  Android: CMAKE_ANDROID_ARM_MODE is set but is valid only for 'armeabi'

All is working with NDK target 21b in all architectures with the following build script

System information (version)

• OpenCV => 4.5.5
• Operating System / Platform => macOS ARM 64 Bit M1
• Compiler => Clang++

Detailed description

android_configure: cmake config
NDK_VESION_MAJOR: 23
NDK_PLATFORM: android-21
ANDROID_NDK_HOME: /Users/one/Library/Android/sdk/ndk/23.1.7779620
SYSROOT: /Users/one/Library/Android/sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/darwin-x86_64/sysroot
Toolchain: /Users/one/Library/Android/sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/include
AR: /Users/one/Library/Android/sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-ar
/Users/one/Library/Android/sdk/ndk/23.1.7779620
/Users/one/SOURCE/apothecary/apothecary/build/opencv/build_android_arm64
CMake Error at /opt/homebrew/Cellar/cmake/3.22.1/share/cmake/Modules/Platform/Android-Determine.cmake:584 (message):
  Android: CMAKE_ANDROID_ARM_MODE is set but is valid only for 'armeabi'
  architectures.
Call Stack (most recent call first):
  /opt/homebrew/Cellar/cmake/3.22.1/share/cmake/Modules/CMakeDetermineSystem.cmake:160 (include)
  CMakeLists.txt:113 (enable_language)


CMake Error: CMake was unable to find a build program corresponding to "Unix Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
-- Configuring incomplete, errors occurred!

 ^ Received error ^

Compilation Successful in NDK 23b:

• arm-v7a / armv7

Failures in:

• x86
• x86_64
• arm-v8a / arm64

Steps to reproduce

CMake Compile:

rm -rf $BUILD_FOLDER
    mkdir $BUILD_FOLDER
    cd $BUILD_FOLDER


    if [ "$ABI" = "armeabi-v7a" ]; then
      export ARM_MODE="-DANDROID_FORCE_ARM_BUILD=TRUE"
    elif [ $ABI = "arm64-v8a" ]; then
      export ARM_MODE="-DANDROID_FORCE_ARM_BUILD=TRUE"
    elif [ "$ABI" = "x86_64" ]; then
      export ARM_MODE="-DANDROID_FORCE_ARM_BUILD=FALSE" 
    elif [ "$ABI" = "x86" ]; then
      export ARM_MODE="-DANDROID_FORCE_ARM_BUILD=FALSE"
    fi

    ANDROID_NDK=${NDK_ROOT}

    export ANDROID_NATIVE_API_LEVEL=21
  
    echo ${ANDROID_NDK}
    pwd
    cmake  \
      -DANDROID_TOOLCHAIN=clang++ \
      -DCMAKE_TOOLCHAIN_FILE=${NDK_ROOT}/build/cmake/android.toolchain.cmake  \
      -DCMAKE_CXX_COMPILER_RANLIB=${RANLIB} \
      -DCMAKE_C_COMPILER=${CC} \
      -DCMAKE_CXX_COMPILER=${CXX} \
      -DCMAKE_CXX_FLAGS="-fvisibility-inlines-hidden -stdlib=libc++ -O3 -fPIC -Wno-implicit-function-declaration" \
      -DCMAKE_C_FLAGS="-fvisibility-inlines-hidden -stdlib=libc++ -O3 -fPIC -Wno-implicit-function-declaration " \
      ${ARM_MODE} \
      -D ANDROID_PLATFORM=${ANDROID_PLATFORM} \
      -DANDROID_ABI=${ABI} \
      -DBUILD_ANDROID_PROJECTS=OFF \
      -D BUILD_ANDROID_EXAMPLES=OFF \
      -D BUILD_opencv_objdetect=OFF \
      -D BUILD_opencv_video=OFF \
      -D BUILD_opencv_videoio=OFF \
      -D BUILD_opencv_features2d=OFF \
      -D BUILD_opencv_flann=OFF \
      -D BUILD_opencv_highgui=ON \
      -D BUILD_opencv_ml=ON \
      -D BUILD_opencv_photo=OFF \
      -D BUILD_opencv_python=OFF \
      -D BUILD_opencv_shape=OFF \
      -D BUILD_opencv_stitching=OFF \
      -D BUILD_opencv_superres=OFF \
      -D BUILD_opencv_ts=OFF \
      -D BUILD_opencv_videostab=OFF \
      -D WITH_MATLAB=OFF \
      -D WITH_CUDA=OFF \
      -DBUILD_SHARED_LIBS=OFF \
      -DBUILD_DOCS=OFF \
      -DBUILD_EXAMPLES=OFF \
      -DBUILD_FAT_JAVA_LIB=OFF \
      -DBUILD_JASPER=OFF \
      -DBUILD_PACKAGE=OFF \
      -DBUILD_opencv_java=OFF \
      -DBUILD_opencv_apps=OFF \
      -DBUILD_JPEG=OFF \
      -DBUILD_PNG=OFF \
      -DHAVE_opencv_androidcamera=OFF \
      -DWITH_CAROTENE=OFF \
      -DWITH_CPUFEATURES=OFF \
      -DWITH_TIFF=OFF \
      -DWITH_OPENEXR=OFF \
      -DWITH_1394=OFF \
      -DWITH_JPEG=OFF \
      -DWITH_PNG=OFF \
      -DWITH_FFMPEG=OFF \
      -DWITH_OPENCL=OFF \
      -DWITH_GIGEAPI=OFF \
      -DWITH_CUDA=OFF \
      -DWITH_CUFFT=OFF \
      -DWITH_JASPER=OFF \
      -DWITH_IMAGEIO=OFF \
      -DWITH_IPP=OFF \
      -DWITH_OPENNI=OFF \
      -DWITH_QT=OFF \
      -DWITH_V4L=OFF \
      -DWITH_PVAPI=OFF \
      -DWITH_EIGEN=OFF \
      -DBUILD_TESTS=OFF \
      -DANDROID_NDK=${NDK_ROOT} \
      -DCMAKE_BUILD_TYPE=Release \
      -DANDROID_ABI=$ABI \
      -DANDROID_STL=c++_static \
      -DANDROID_PLATFORM=$ANDROID_PLATFORM \
      -DCMAKE_TOOLCHAIN_FILE=$ANDROID_CMAKE_TOOLCHAIN \
      -DBUILD_PERF_TESTS=OFF ..
    make -j${PARALLEL_MAKE}
    make install
    

Issue submission checklist

• I report the issue, it's not a question
• I checked the problem with documentation, FAQ, open issues,
  forum.opencv.org, Stack Overflow, etc and have not found solution
• I updated to latest OpenCV version and the issue is still there
• There is reproducer code and related data files: videos, images, onnx, etc

[alalek]

Android: CMAKE_ANDROID_ARM_MODE is set but is valid only for 'armeabi'

OpenCV doesn't set this variable. Your script does that. You need to adopt this script for modern Android SDKs.

Error at /opt/homebrew/Cellar/cmake/3.22.1/share/cmake/Modules/Platform/Android-Determine.cmake:584

CMake's stuff.

---

IMHO, there is nothing to fix in OpenCV for this problem.

[danoli3]

Compiling successfully with CMake 3.18.1 packaged with Android SDK !!

I have reported this issue with CMake 3.22.1 directly to their issues, seems to be related to 3.22.1

https://gitlab.kitware.com/cmake/cmake/-/issues/23108

[danoli3]

Resolved