Android Studio CMake Error: Build Command failed

Question

I'm running into an Error when I open a new project in Android Studio from the Code Samples (Hello JIN). When the Project is opened the following:

Build command failed.
Error while executing process /opt/android-sdk/cmake/3.6.4111459/bin/cmake with arguments {-H/home/max/Documents/AndroidStudioProjects/HelloJNI1/app/src/main/cpp -B/home/max/Documents/AndroidStudioProjects/HelloJNI1/app/.externalNativeBuild/cmake/arm8Release/arm64-v8a -GAndroid Gradle - Ninja -DANDROID_ABI=arm64-v8a -DANDROID_NDK=/opt/android-sdk/ndk-bundle -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=/home/max/Documents/AndroidStudioProjects/HelloJNI1/app/build/intermediates/cmake/arm8/release/obj/arm64-v8a -DCMAKE_BUILD_TYPE=Release -DCMAKE_MAKE_PROGRAM=/opt/android-sdk/cmake/3.6.4111459/bin/ninja -DCMAKE_TOOLCHAIN_FILE=/opt/android-sdk/ndk-bundle/build/cmake/android.toolchain.cmake -DANDROID_PLATFORM=android-23 -DANDROID_TOOLCHAIN=clang}
-- Check for working C compiler: /opt/android-sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang
-- Check for working C compiler: /opt/android-sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang -- broken
-- Configuring incomplete, errors occurred!
See also "/home/max/Documents/AndroidStudioProjects/HelloJNI1/app/.externalNativeBuild/cmake/arm8Release/arm64-v8a/CMakeFiles/CMakeOutput.log".
See also "/home/max/Documents/AndroidStudioProjects/HelloJNI1/app/.externalNativeBuild/cmake/arm8Release/arm64-v8a/CMakeFiles/CMakeError.log".
CMake Error at /opt/android-sdk/cmake/3.6.4111459/share/cmake-3.6/Modules/CMakeTestCCompiler.cmake:61 (message):
  The C compiler
  "/opt/android-sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang"
  is not able to compile a simple test program.
  It fails with the following output:
   Change Dir: /home/max/Documents/AndroidStudioProjects/HelloJNI1/app/.externalNativeBuild/cmake/arm8Release/arm64-v8a/CMakeFiles/CMakeTmp
  Run Build Command:"/opt/android-sdk/cmake/3.6.4111459/bin/ninja"
  "cmTC_0053d"
  [1/2] Building C object CMakeFiles/cmTC_0053d.dir/testCCompiler.c.o
  FAILED:
  /opt/android-sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang
  --target=aarch64-none-linux-android
  --gcc-toolchain=/opt/android-sdk/ndk-bundle/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64
  --sysroot=/opt/android-sdk/ndk-bundle/sysroot -isystem
  /opt/android-sdk/ndk-bundle/sysroot/usr/include/aarch64-linux-android
  -D__ANDROID_API__=23 -g -DANDROID -ffunction-sections -funwind-tables
  -fstack-protector-strong -no-canonical-prefixes -Wa,--noexecstack -Wformat
  -Werror=format-security -fPIE -o
  CMakeFiles/cmTC_0053d.dir/testCCompiler.c.o -c
  /home/max/Documents/AndroidStudioProjects/HelloJNI1/app/.externalNativeBuild/cmake/arm8Release/arm64-v8a/CMakeFiles/CMakeTmp/testCCompiler.c
  /opt/android-sdk/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang:
  error while loading shared libraries: libncurses.so.5: cannot open shared
  object file: No such file or directory
  ninja: build stopped: subcommand failed.
  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt

This Error drops mutliple times in the IDE

I'm using Arch-Linux 64x

Cmake.txt:

    cmake_minimum_required(VERSION 3.4.1)

add_library(hello-jni SHARED
            hello-jni.c)

# Include libraries needed for hello-jni lib
target_link_libraries(hello-jni
                      android
                      log)

Answer 1

I would recommend using GCC instead of clang for the time being because clang still does not contain all features. You can change your compiler by doing the following:

set(CMAKE_C_COMPILER /path-to-ndk/toolchains/aarch64-linux-android-4.9/prebuilt/darwin-x86_64/bin/aarch64-linux-android-gcc)

However, the darwin-x86_64 directory only exists if you are on a Mac. If you are on another platform, just use the directory that exists under the prebuilt folder.

Answer 2

I tried the solutions provided above but no luck. Then I changed the path of OpenCV_DIR which was set in the CMakeLists.txt file and it worked. My project was not pointing to the right path, which was causing the error. Make sure you have provided the right path in your CMakeLists.txt file.

For example :

set(OpenCV_DIR "...../OpenCV_Android/install/sdk/native/jni/abi-arm64-v8a")