Building OpenCV for Android using Android cmdline-tools #21735
Description
Android cmdline-tools no longer installs the deprecated Android SDK Tools package. This causes a cmake configure error when OpenCV tries to find these tools in ${ANDROID_SDK}/tools if they're not already installed.
System information (version)
- OpenCV => ❔
- Operating System / Platform => ❔
- Compiler => ❔
Detailed description
Steps to reproduce
- Clean install Android SDK using the latest
cmdline-toolspackage. - Build OpenCV for Android using the included python helper script, e.g.
python3 /opencv/platforms/android/build_sdk.py --sdk_path=/opt/android-sdk --no_samples_build --config=/opencv/platforms/android/ndk-22.config.py
Build fails during configure step with a message like this one:
-- Update variable ANDROID_SDK_ROOT from environment: /opt/android-sdk
-- Update variable ANDROID_HOME from environment: /opt/android-sdk
-- Update variable ANDROID_SDK from environment: /opt/android-sdk
CMake Error at cmake/android/OpenCVDetectAndroidSDK.cmake:64 (message):
Android SDK Tools: can't automatically find Android SDK Tools. Specify
path via ANDROID_SDK_TOOLS variable
Call Stack (most recent call first):
cmake/android/OpenCVDetectAndroidSDK.cmake:173 (ocv_detect_android_sdk_tools)
CMakeLists.txt:746 (include)
-- Configuring incomplete, errors occurred!
See also "/build/o4a/CMakeFiles/CMakeOutput.log".
See also "/build/o4a/CMakeFiles/CMakeError.log".
Traceback (most recent call last):
File "/opencv/platforms/android/build_sdk.py", line 445, in <module>
builder.build_library(abi, do_install)
File "/opencv/platforms/android/build_sdk.py", line 262, in build_library
execute(cmd)
File "/opencv/platforms/android/build_sdk.py", line 30, in execute
raise Fail("Child returned: %s" % retcode)
__main__.Fail: Child returned: 1
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 any solution - I updated to the latest OpenCV version and the issue is still there
- There is reproducer code and related data files: videos, images, onnx, etc