Error: OpenCV is considered to be Not Found

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1

I got the following errors:

C:\Users\amd\Documents\OpenNative\app\src\main\cpp\CMakeLists.txt : C/C++ debug|armeabi-v7a : CMake Error at C:\Users\amd\Documents\OpenNative\app\src\main\cpp\CMakeLists.txt:11 (find_package):
Found package configuration file:

C:/opencv-4.5.2-android-sdk/OpenCV-android-sdk/sdk/native/jni/OpenCVConfig.cmake

but it set OpenCV_FOUND to FALSE so package “OpenCV” is considered to be
NOT FOUND.

For more details, see my repo: https://github.com/pstricks-fans/nativeopencvtest/blob/master/app/src/main/cpp/CMakeLists.txt

Other configurations:

opencv
opencv752×406 20.3 KB

envi

The contents of C:/opencv-4.5.2-android-sdk/OpenCV-android-sdk/sdk/native/jni/OpenCVConfig.cmake:



if(CMAKE_VERSION VERSION_LESS "2.8.3")
  get_filename_component(CMAKE_CURRENT_LIST_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
endif()

if(NOT DEFINED OpenCV_CONFIG_SUBDIR)
  set(OpenCV_CONFIG_SUBDIR "/abi-${ANDROID_NDK_ABI_NAME}")
endif()

set(OpenCV_CONFIG_PATH "${CMAKE_CURRENT_LIST_DIR}${OpenCV_CONFIG_SUBDIR}")
if(EXISTS "${OpenCV_CONFIG_PATH}/OpenCVConfig.cmake")
  include("${OpenCV_CONFIG_PATH}/OpenCVConfig.cmake")
else()
  if(NOT OpenCV_FIND_QUIETLY)
    message(WARNING "Found OpenCV Android Pack but it has no binaries compatible with your ABI (can't find: ${OpenCV_CONFIG_SUBDIR})")
  endif()
  set(OpenCV_FOUND FALSE)
endif()

If I comment the second line from the bottom:

  endif()
  # set(OpenCV_FOUND FALSE)
endif()

The build is successful with the following messages:

Executing tasks: [:app:assembleDebug] in project C:\Users\amd\Documents\OpenNative

Task :app:preBuild UP-TO-DATE
Task :app:preDebugBuild UP-TO-DATE
Task :app:compileDebugAidl NO-SOURCE
Task :app:compileDebugRenderscript NO-SOURCE
Task :app:generateDebugBuildConfig UP-TO-DATE
Task :app:javaPreCompileDebug UP-TO-DATE
Task :app:checkDebugAarMetadata UP-TO-DATE
Task :app:generateDebugResValues UP-TO-DATE
Task :app:generateDebugResources UP-TO-DATE
Task :app:mergeDebugResources UP-TO-DATE
Task :app:createDebugCompatibleScreenManifests UP-TO-DATE
Task :app:extractDeepLinksDebug UP-TO-DATE
Task :app:processDebugMainManifest UP-TO-DATE
Task :app:processDebugManifest UP-TO-DATE
Task :app:processDebugManifestForPackage UP-TO-DATE
Task :app:processDebugResources UP-TO-DATE
Task :app:compileDebugJavaWithJavac UP-TO-DATE

Task :app:generateJsonModelDebug
C:\Users\amd\Documents\OpenNative\app\src\main\cpp\CMakeLists.txt : C/C++ debug|armeabi-v7a : CMake Warning at C:/opencv-4.5.2-android-sdk/OpenCV-android-sdk/sdk/native/jni/OpenCVConfig.cmake:47 (message):
Found OpenCV Android Pack but it has no binaries compatible with your ABI
(can’t find: /abi-)
Call Stack (most recent call first):
CMakeLists.txt:11 (find_package)

C:\Users\amd\Documents\OpenNative\app\src\main\cpp\CMakeLists.txt : C/C++ debug|armeabi-v7a : CMake Warning at C:/opencv-4.5.2-android-sdk/OpenCV-android-sdk/sdk/native/jni/OpenCVConfig.cmake:47 (message):
Found OpenCV Android Pack but it has no binaries compatible with your ABI
(can’t find: /abi-)
Call Stack (most recent call first):
CMakeLists.txt:11 (find_package)

C:\Users\amd\Documents\OpenNative\app\src\main\cpp\CMakeLists.txt : C/C++ debug|arm64-v8a : CMake Warning at C:/opencv-4.5.2-android-sdk/OpenCV-android-sdk/sdk/native/jni/OpenCVConfig.cmake:47 (message):
Found OpenCV Android Pack but it has no binaries compatible with your ABI
(can’t find: /abi-)
Call Stack (most recent call first):
CMakeLists.txt:11 (find_package)

C:\Users\amd\Documents\OpenNative\app\src\main\cpp\CMakeLists.txt : C/C++ debug|arm64-v8a : CMake Warning at C:/opencv-4.5.2-android-sdk/OpenCV-android-sdk/sdk/native/jni/OpenCVConfig.cmake:47 (message):
Found OpenCV Android Pack but it has no binaries compatible with your ABI
(can’t find: /abi-)
Call Stack (most recent call first):
CMakeLists.txt:11 (find_package)

C:\Users\amd\Documents\OpenNative\app\src\main\cpp\CMakeLists.txt : C/C++ debug|x86 : CMake Warning at C:/opencv-4.5.2-android-sdk/OpenCV-android-sdk/sdk/native/jni/OpenCVConfig.cmake:47 (message):
Found OpenCV Android Pack but it has no binaries compatible with your ABI
(can’t find: /abi-)
Call Stack (most recent call first):
CMakeLists.txt:11 (find_package)

C:\Users\amd\Documents\OpenNative\app\src\main\cpp\CMakeLists.txt : C/C++ debug|x86 : CMake Warning at C:/opencv-4.5.2-android-sdk/OpenCV-android-sdk/sdk/native/jni/OpenCVConfig.cmake:47 (message):
Found OpenCV Android Pack but it has no binaries compatible with your ABI
(can’t find: /abi-)
Call Stack (most recent call first):
CMakeLists.txt:11 (find_package)

C:\Users\amd\Documents\OpenNative\app\src\main\cpp\CMakeLists.txt : C/C++ debug|x86_64 : CMake Warning at C:/opencv-4.5.2-android-sdk/OpenCV-android-sdk/sdk/native/jni/OpenCVConfig.cmake:47 (message):
Found OpenCV Android Pack but it has no binaries compatible with your ABI
(can’t find: /abi-)
Call Stack (most recent call first):
CMakeLists.txt:11 (find_package)

C:\Users\amd\Documents\OpenNative\app\src\main\cpp\CMakeLists.txt : C/C++ debug|x86_64 : CMake Warning at C:/opencv-4.5.2-android-sdk/OpenCV-android-sdk/sdk/native/jni/OpenCVConfig.cmake:47 (message):
Found OpenCV Android Pack but it has no binaries compatible with your ABI
(can’t find: /abi-)
Call Stack (most recent call first):
CMakeLists.txt:11 (find_package)

Task :app:externalNativeBuildDebug
Build native-lib_armeabi-v7a
ninja: Entering directory C:\Users\amd\Documents\OpenNative\app\.cxx\cmake\debug\armeabi-v7a' ninja: no work to do. Build native-lib_arm64-v8a ninja: Entering directory C:\Users\amd\Documents\OpenNative\app.cxx\cmake\debug\arm64-v8a’
ninja: no work to do.
Build native-lib_x86
ninja: Entering directory C:\Users\amd\Documents\OpenNative\app\.cxx\cmake\debug\x86' ninja: no work to do. Build native-lib_x86_64 ninja: Entering directory C:\Users\amd\Documents\OpenNative\app.cxx\cmake\debug\x86_64’
ninja: no work to do.

Task :app:compileDebugSources
Task :app:mergeDebugNativeDebugMetadata NO-SOURCE
Task :app:mergeDebugShaders UP-TO-DATE
Task :app:compileDebugShaders NO-SOURCE
Task :app:generateDebugAssets UP-TO-DATE
Task :app:mergeDebugAssets UP-TO-DATE
Task :app:compressDebugAssets UP-TO-DATE
Task :app:processDebugJavaRes NO-SOURCE
Task :app:mergeDebugJavaResource UP-TO-DATE
Task :app:checkDebugDuplicateClasses UP-TO-DATE
Task :app:dexBuilderDebug UP-TO-DATE
Task :app:desugarDebugFileDependencies UP-TO-DATE
Task :app:mergeExtDexDebug UP-TO-DATE
Task :app:mergeDexDebug UP-TO-DATE
Task :app:mergeDebugJniLibFolders UP-TO-DATE
Task :app:mergeDebugNativeLibs UP-TO-DATE
Task :app:stripDebugDebugSymbols UP-TO-DATE
Task :app:validateSigningDebug UP-TO-DATE
Task :app:packageDebug UP-TO-DATE
Task :app:assembleDebug

BUILD SUCCESSFUL in 4s
28 actionable tasks: 2 executed, 26 up-to-date

Build Analyzer results available

What is the correct way to fix this issue?

2

OpenNative

so you are using that library.

you should seek support from them, not from OpenCV.

3

OpenNative is the name of my application. It is a trivial project name. I can change it to XYZ.

4

I see.

well, if it says OpenCV_FOUND is false, this is what would be causing it:

if(EXISTS "${OpenCV_CONFIG_PATH}/OpenCVConfig.cmake")
  include("${OpenCV_CONFIG_PATH}/OpenCVConfig.cmake")
else()
  ...
  set(OpenCV_FOUND FALSE)
endif()

so… that path wasn’t given, it was given but wrong, or that file doesn’t exist there.

note that that path isn’t jni/OpenCVConfig.cmake but but seems to be a file in “regular” OpenCV. it should exist in the build dir or install dir of opencv.

6

I found the culprit. I changed the minSDKVersion in my_opencv_sdk_path\sdk\build.gradle from its original value of 21 to 19 because I wanted to match against my project minSDKVersion of 19 (I wanted to support more legacy devices).

But now because of this problem, I set my project minSDKVersion to 21 and return the OpenCV minSDKVersion back to 21. Everything goes well without problem.

1 Like