luca96 / android-face-landmarks Goto Github PK

Attached is the screen captured that show no face detected by the app but there actual face display by the camera. Please guide me to resolve the issue ? Thank you.

The app fails to build with the following error:

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:externalNativeBuildDebug'.
> Build command failed.
  Error while executing process C:\Users\Spike\AppData\Local\Android\Sdk\cmake\3.10.2.4988404\bin\cmake.exe with arguments {--build D:\ProgettiAndroid\apps\android-face-landmarks-master\app\.externalNativeBuild\cmake\debug\x86_64 --target native-lib}
  [1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
  [2/2] Linking CXX shared library ..\..\..\..\build\intermediates\cmake\debug\obj\x86_64\libnative-lib.so
  FAILED: ../../../../build/intermediates/cmake/debug/obj/x86_64/libnative-lib.so 
  cmd.exe /C "cd . && C:\Users\Spike\AppData\Local\Android\Sdk\ndk\21.1.6352462\toolchains\llvm\prebuilt\windows-x86_64\bin\clang++.exe --target=x86_64-none-linux-android21 --gcc-toolchain=C:/Users/Spike/AppData/Local/Android/Sdk/ndk/21.1.6352462/toolchains/llvm/prebuilt/windows-x86_64 --sysroot=C:/Users/Spike/AppData/Local/Android/Sdk/ndk/21.1.6352462/toolchains/llvm/prebuilt/windows-x86_64/sysroot -fPIC -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -frtti -fexceptions -std=c++11 -frtti -fexceptions -fexceptions -std=c++11 -O0 -fno-limit-debug-info  -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libgcc_real.a -Wl,--exclude-libs,libatomic.a -Wl,--build-id -Wl,--fatal-warnings -Wl,--no-undefined -Qunused-arguments -shared -Wl,-soname,libnative-lib.so -o ..\..\..\..\build\intermediates\cmake\debug\obj\x86_64\libnative-lib.so CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o  ../../../../src/main/cppLibs/opencv/x86_64/libopencv_java4.so ../../../../src/main/cppLibs/dlib/lib/x86_64/libdlib.so -llog -latomic -lm && cd ."
  D:/ProgettiAndroid/libs/OpenCV-android-sdk/sdk/native/jni/include\opencv2/core/mat.inl.hpp:501: error: undefined reference to 'cv::error(int, cv::String const&, char const*, char const*, int)'
  D:/ProgettiAndroid/libs/OpenCV-android-sdk/sdk/native/jni/include\opencv2/core/mat.inl.hpp:514: error: undefined reference to 'cv::error(int, cv::String const&, char const*, char const*, int)'
  ../../../../src/main/cppLibs/dlib/include\dlib/opencv/cv_image.h:37: error: undefined reference to '_IplImage::_IplImage(cv::Mat const&)'
  D:/ProgettiAndroid/libs/OpenCV-android-sdk/sdk/native/jni/include\opencv2/core/cvstd.hpp:602: error: undefined reference to 'cv::String::allocate(unsigned long)'
  D:/ProgettiAndroid/libs/OpenCV-android-sdk/sdk/native/jni/include\opencv2/core/cvstd.hpp:648: error: undefined reference to 'cv::String::deallocate()'
  D:/ProgettiAndroid/libs/OpenCV-android-sdk/sdk/native/jni/include\opencv2/core/cvstd.hpp:656: error: undefined reference to 'cv::String::deallocate()'
  clang++: error: linker command failed with exit code 1 (use -v to see invocation)
  ninja: build stopped: subcommand failed.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 8s

What I did:

• installed NDK, CMake, LLDB from the SDK manager
• modified the CMakeLists.txt file as suggested

I have followed the exact steps those are described in the README file. But still when I try to run the project it gives me the following error.

fatal error: 'opencv2/opencv.hpp' file not found

Hi ,
I am trying integrate your face landmark detection into android react native. Would you be able to advice how could I go about it ? Thanks.

Update your repo with CameraX

Hi ,
May I know how to hide camera preview in your codes and run your app in the background ? Thanks for helping.

Hi,
After i'm running the app i get this error.
I don't find the opencv2 folder

Build command failed.
Error while executing process /Users/matanelliberman/Library/Android/sdk/cmake/3.10.2.4988404/bin/cmake with arguments {--build /Users/matanelliberman/Downloads/android-face-landmarks-master/app/.externalNativeBuild/cmake/debug/arm64-v8a --target native-lib}
[1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
FAILED: CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
/Users/matanelliberman/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++ --target=aarch64-none-linux-android21 --gcc-toolchain=/Users/matanelliberman/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64 --sysroot=/Users/matanelliberman/Library/Android/sdk/ndk-bundle/toolchains/llvm/prebuilt/darwin-x86_64/sysroot -Dnative_lib_EXPORTS -I../../../../E:/Luca/Librerie/OpenCV/opencv-4.0.1-android-sdk/sdk/native/jni/include -I../../../../src/main/cppLibs/dlib/include -I../../../../include -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -fno-addrsig -Wa,--noexecstack -Wformat -Werror=format-security -stdlib=libc++ -frtti -fexceptions -std=c++11 -frtti -fexceptions -fexceptions -std=c++11 -O0 -fno-limit-debug-info -fPIC -MD -MT CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o -MF CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o.d -o CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o -c ../../../../src/main/cpp/native-lib.cpp
../../../../src/main/cpp/native-lib.cpp:13:10: fatal error: 'opencv2/opencv.hpp' file not found
#include <opencv2/opencv.hpp>
^~~~~~~~~~~~~~~~~~~~
1 error generated.
ninja: build stopped: subcommand failed.

10x

i am able to build this project using android studio, But its not working, I installed and download models. But i dont see any landmark while using app.

How do i solve this issue? May be there is NDK version conflict. How do i install specific version of NDK?

Hi ,

  I have been using your package in my React Native application since 2019 and is able to build and run with no issue, then suddenly late June this year I am not able to build your package. I try to build older version of my application which uses your package but still fails . Here is the error message  :

Task :facialcamlib:compileDebugKotlin FAILED
w: -Xcoroutines has no effect: coroutines are enabled anyway in 1.3 and beyond
w: Runtime JAR files in the classpath should have the same version. These files were found in the classpath:
C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk7/1.3.50/50ad05ea1c2595fb31b800e76db464d08d599af3/kotlin-stdlib-jdk7-1.3.50.jar (version 1.3)
C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar (version 1.5)
C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.5.10/6b84d926e28493be69daf673e40076f89492ef7/kotlin-stdlib-common-1.5.10.jar (version 1.5)
w: Some runtime JAR files in the classpath have an incompatible version. Consider removing them from the classpath

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.5/userguide/command_line_interface.html#sec:command_line_warnings
36 actionable tasks: 33 executed, 3 up-to-date
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
e: Incompatible classes were found in dependencies. Remove them from the classpath or use '-Xskip-metadata-version-check' to suppress errors
e: C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.5.10/6b84d926e28493be69daf673e40076f89492ef7/

Task :facialcamlib:compileDebugKotlin FAILED
w: -Xcoroutines has no effect: coroutines are enabled anyway in 1.3 and beyond
w: Runtime JAR files in the classpath should have the same version. These files were found in the classpath:
C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk7/1.3.50/50ad05ea1c2595fb31b800e76db464d08d599af3/kotlin-stdlib-jdk7-1.3.50.jar (version 1.3)
C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar (version 1.5)
C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.5.10/6b84d926e28493be69daf673e40076f89492ef7/kotlin-stdlib-common-1.5.10.jar (version 1.5)
w: Some runtime JAR files in the classpath have an incompatible version. Consider removing them from the classpath

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.5/userguide/command_line_interface.html#sec:command_line_warnings
36 actionable tasks: 33 executed, 3 up-to-date
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
e: Incompatible classes were found in dependencies. Remove them from the classpath or use '-Xskip-metadata-version-check' to suppress errors
e: C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.5.10/6b84d926e28493be69daf673e40076f89492ef7/kotlin-stdlib-common-1.5.10.jar!/META-INF/kotlin-stdlib-common.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
e: C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar!/META-INF/kotlin-stdlib.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
e: C:/Users/user/.gradle/caches/transforms-2/files-2.1/a92c034ef4a50136f14b086e38b3c0dd/jars/classes.jar!/META-INF/core-ktx_release.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
e: C:\dev\ReactNative\FEDMathQuiz_\android\facialcamlib\src\main\java\com\dev\anzalone\luca\facelandmarks\camera\CameraOverlay.kt: (1, 7): Class 'kotlin.Suppress' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
The class is loaded from C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar!/kotlin/Suppress.class
e: C:\dev\ReactNative\FEDMathQuiz_\android\facialcamlib\src\main\java\com\dev\anzalone\luca\facelandmarks\camera\CameraOverlay.kt: (25, 14): Class 'kotlin.Unit' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
The class is loaded from C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar!/kotlin/Unit.class
e: C:\dev\ReactNative\FEDMathQuiz_\android\facialcamlib\src\main\java\com\dev\anzalone\luca\facelandmarks\camera\CameraOverlay.kt: (26, 14): Class 'kotlin.Unit' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
The class is loaded from C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar!/kotlin/Unit.class
e: C:\dev\ReactNative\FEDMathQuiz_\android\facialcamlib\src\main\java\com\dev\anzalone\luca\facelandmarks\camera\CameraOverlay.kt: (33, 51): Class 'kotlin.Pair' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
The class is loaded from C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar!/kotlin/Pair.class
e: C:\dev\ReactNative\FEDMathQuiz_\android\facialcamlib\src\main\java\com\dev\anzalone\luca\facelandmarks\camera\CameraOverlay.kt: (34, 11): Class 'kotlin.Unit' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.!/META-INF/kotlin-stdlib-common.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
e: C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar!/META-INF/kotlin-stdlib.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
e: C:/Users/user/.gradle/caches/transforms-2/files-2.1/a92c034ef4a50136f14b086e38b3c0dd/jars/classes.jar!/META-INF/core-ktx_release.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
e: C:\dev\ReactNative\FEDMathQuiz_\android\facialcamlib\src\main\java\com\dev\anzalone\luca\facelandmarks\camera\CameraOverlay.kt: (1, 7): Class 'kotlin.Suppress' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
The class is loaded from C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar!/kotlin/Suppress.class
e: C:\dev\ReactNative\FEDMathQuiz_\android\facialcamlib\src\main\java\com\dev\anzalone\luca\facelandmarks\camera\CameraOverlay.kt: (25, 14): Class 'kotlin.Unit' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
The class is loaded from C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar!/kotlin/Unit.class
e: C:\dev\ReactNative\FEDMathQuiz_\android\facialcamlib\src\main\java\com\dev\anzalone\luca\facelandmarks\camera\CameraOverlay.kt: (26, 14): Class 'kotlin.Unit' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
The class is loaded from C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar!/kotlin/Unit.class
e: C:\dev\ReactNative\FEDMathQuiz_\android\facialcamlib\src\main\java\com\dev\anzalone\luca\facelandmarks\camera\CameraOverlay.kt: (33, 51): Class 'kotlin.Pair' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.
The class is loaded from C:/Users/user/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.10/da6a904b132f0402fa4d79169a3c1770598d4702/kotlin-stdlib-1.5.10.jar!/kotlin/Pair.class
e: C:\dev\ReactNative\FEDMathQuiz_\android\facialcamlib\src\main\java\com\dev\anzalone\luca\facelandmarks\camera\CameraOverlay.kt: (34, 11): Class 'kotlin.Unit' was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15.

I am not sure why during build it installed kotlin-stdlib-1.5.10.jar , any help will be great. Thanks.

After building and running there is no display from the camera.

May I know how to resolve the issue. Thanks,

I am able to run the android-face-landmarks app on the android phone and the camera is able to display the face but the face landmark points are not appearing .

1. May I know how to go make the face landmark points appear ?
2. May I know which in part of your codes I am able to access the face landmark points ?

Thank you.

The app starts and immediately says cannot open camera. I have allowed permissions for camera and I have set the cameras to "webcam0". Any ideas? Thanks

Thanks for your work,
when I sync this project in Android Studio, the sync failed with his error

ERROR: The Android Gradle plugin supports only Kotlin Gradle plugin version 1.3.0 and higher.
The following dependencies do not satisfy the required version:
root project 'dlib-face' -> org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.71
Affected Modules: app
thanks in advance

Hi, I correctly replaced the 2 paths in the "CMakeLists.txt" but the build fails for these errors:

1. Class CameraActivity.kt, line 280. "The 'await' suspension point is inside a critical section"
2. Class CameraActivity.kt, line 218. "Unresolved reference: maxBy" and "Unresolved reference: it"
3. Class CameraUtil.kt, line 66. "Unresolved reference: maxBy" and "Unresolved reference: it"

I'm new to Kotlin syntax, how can I solve them?

Thanks in advance

Hi, I discovered that when the bounding box of the face is outside the phone screen, the app crash. Attached is the screen recording of the app. Please help to rectify. Thank you.
20191210_110814.zip

Please find the error during build apk

`
org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:externalNativeBuildDebug'.
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:103)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:73)
at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59)
at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:91)
at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:59)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:256)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:249)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:238)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:663)
at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:597)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.gradle.internal.UncheckedException: Build command failed.
Error while executing process /home/chandra/Android/Sdk/cmake/3.6.3155560/bin/cmake with arguments {--build /home/chandra/Projects/oloid/android-face-landmarks/app/.externalNativeBuild/cmake/debug/arm64-v8a --target native-lib}
[1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
FAILED: /home/chandra/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ -target aarch64-none-linux-android -gcc-toolchain /home/chandra/Android/Sdk/ndk-bundle/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64 --sysroot=/home/chandra/Android/Sdk/ndk-bundle/platforms/android-21/arch-arm64 -Dnative_lib_EXPORTS -I../../../../E:/Luca/Librerie/OpenCV/opencv-4.0.1-android-sdk/sdk/native/jni/include -I../../../../src/main/cppLibs/dlib/include -I../../../../include -isystem /home/chandra/Android/Sdk/ndk-bundle/sources/cxx-stl/llvm-libc++/include -isystem /home/chandra/Android/Sdk/ndk-bundle/sources/android/support/include -isystem /home/chandra/Android/Sdk/ndk-bundle/sources/cxx-stl/llvm-libc++abi/include -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -std=c++11 -frtti -fexceptions -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -std=c++11 -frtti -fexceptions -std=c++11 -frtti -fexceptions -fexceptions -std=c++11 -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info -fPIC -MD -MT CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o -MF CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o.d -o CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o -c /home/chandra/Projects/oloid/android-face-landmarks/app/src/main/cpp/native-lib.cpp
/home/chandra/Projects/oloid/android-face-landmarks/app/src/main/cpp/native-lib.cpp:13:10: fatal error: 'opencv2/opencv.hpp' file not found
#include <opencv2/opencv.hpp>
^
1 error generated.
ninja: build stopped: subcommand failed.

at org.gradle.internal.UncheckedException.throwAsUncheckedException(UncheckedException.java:63)
at org.gradle.internal.UncheckedException.throwAsUncheckedException(UncheckedException.java:40)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:76)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.doExecute(StandardTaskAction.java:46)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)
at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:788)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:755)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:124)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:113)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:95)
... 33 more

Caused by: Build command failed.
Error while executing process /home/chandra/Android/Sdk/cmake/3.6.3155560/bin/cmake with arguments {--build /home/chandra/Projects/oloid/android-face-landmarks/app/.externalNativeBuild/cmake/debug/arm64-v8a --target native-lib}
[1/2] Building CXX object CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o
FAILED: /home/chandra/Android/Sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ -target aarch64-none-linux-android -gcc-toolchain /home/chandra/Android/Sdk/ndk-bundle/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64 --sysroot=/home/chandra/Android/Sdk/ndk-bundle/platforms/android-21/arch-arm64 -Dnative_lib_EXPORTS -I../../../../E:/Luca/Librerie/OpenCV/opencv-4.0.1-android-sdk/sdk/native/jni/include -I../../../../src/main/cppLibs/dlib/include -I../../../../include -isystem /home/chandra/Android/Sdk/ndk-bundle/sources/cxx-stl/llvm-libc++/include -isystem /home/chandra/Android/Sdk/ndk-bundle/sources/android/support/include -isystem /home/chandra/Android/Sdk/ndk-bundle/sources/cxx-stl/llvm-libc++abi/include -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -std=c++11 -frtti -fexceptions -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -std=c++11 -frtti -fexceptions -std=c++11 -frtti -fexceptions -fexceptions -std=c++11 -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info -fPIC -MD -MT CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o -MF CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o.d -o CMakeFiles/native-lib.dir/src/main/cpp/native-lib.cpp.o -c /home/chandra/Projects/oloid/android-face-landmarks/app/src/main/cpp/native-lib.cpp
/home/chandra/Projects/oloid/android-face-landmarks/app/src/main/cpp/native-lib.cpp:13:10: fatal error: 'opencv2/opencv.hpp' file not found
#include <opencv2/opencv.hpp>
^
1 error generated.
ninja: build stopped: subcommand failed.

at com.android.build.gradle.tasks.ExternalNativeBuildTaskUtils.executeBuildProcessAndLogError(ExternalNativeBuildTaskUtils.java:245)
at com.android.build.gradle.tasks.ExternalNativeBuildTask.executeProcessBatch(ExternalNativeBuildTask.java:307)
at com.android.build.gradle.tasks.ExternalNativeBuildTask.build(ExternalNativeBuildTask.java:185)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
... 45 more

`

Best
Chandra