Build the example Error: linker command failed with exit code 1

[dzyjjpy]

when I build the examples in /tengine/example using the following command, it doesn't work.

For armv8:

cp ~/ComputeLibrary/build_64/libarm_compute* ~/android-ndk-r16b/platforms/android-21/arch-arm64/usr/lib/ cd ~/tengine/example mkdir build cd build ../android_build_armv8.sh # ~/workspace/tengine/examples/build$ ../android_build_armv8.sh

!/bin/bash

export ANDROID_NDK=/home/jiapy/workspace/tengine/Tengine_android_build/android-ndk-r16b cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake \ -DANDROID_ABI="arm64-v8a" \ -DANDROID_PLATFORM=android-21 \ -DANDROID_STL=c++_shared \ -DTENGINE_DIR=/home/jiapy/workspace/tengine \ -DOpenCV_DIR=/home/jiapy/workspace/tengine/Tengine_android_build/opencv/sdk/native/jni\ -DPROTOBUF_DIR=/home/jiapy/workspace/tengine/Tengine_android_build/protobuf_lib \ -DBLAS_DIR=/home/jiapy/workspace/tengine/Tengine_android_build/Openblas020-android \ .. -- CMAKE_TOOLCHAIN_FILE = /home/jiapy/workspace/tengine/Tengine_android_build/android-ndk-r16b/build/cmake/android.toolchain.cmake -- CMAKE_INSTALL_PREFIX = /usr/local OpenCV_DIR dir /home/jiapy/workspace/tengine/Tengine_android_build/opencv/sdk/native/jni list dir /home/jiapy/workspace/tengine/examples/.git -- Configuring done -- Generating done -- Build files have been written to: /home/jiapy/workspace/tengine/examples/build android_build_armv8.sh content

make -j4 # errors in this step Errors information: ~/workspace/tengine/examples/build$ make -j8 [ 10%] Building CXX object yolov2/CMakeFiles/YOLOV2.dir/yolov2.cpp.o [ 10%] Building CXX object faster_rcnn/CMakeFiles/FASTER_RCNN.dir/faster_rcnn.cpp.o [ 10%] Building CXX object ssd/CMakeFiles/SSD.dir/ssd.cpp.o [ 13%] Building CXX object tengine_model/convert/CMakeFiles/convert_caffe_to_tm.dir/convert_caffe_to_tm.cpp.o [ 16%] Building CXX object mobilenet_ssd/CMakeFiles/MSSD.dir/mssd.cpp.o [ 20%] Building CXX object lighten_cnn/CMakeFiles/LIGHTEN_CNN.dir/lighten_cnn.cpp.o [ 23%] Building CXX object imagenet_classification/CMakeFiles/Classify.dir/classification.cpp.o [ 26%] Building CXX object mtcnn/CMakeFiles/MTCNN.dir/mtcnn_utils.cpp.o [ 30%] Building CXX object tengine_model/convert/CMakeFiles/convert_caffe_to_tm.dir///common/common.cpp.o [ 33%] Building CXX object lighten_cnn/CMakeFiles/LIGHTEN_CNN.dir//common/common.cpp.o [ 36%] Linking CXX executable convert_caffe_to_tm [ 40%] Building CXX object mtcnn/CMakeFiles/MTCNN.dir/mtcnn.cpp.o /home/jiapy/workspace/tengine/Tengine_android_build/Openblas020-android/arm64/lib/libopenblas.so: undefined reference to `stderr' clang++: error: linker command failed with exit code 1 (use -v to see invocation) tengine_model/convert/CMakeFiles/convert_caffe_to_tm.dir/build.make:100: recipe for target 'tengine_model/convert/convert_caffe_to_tm' failed make[2]: [tengine_model/convert/convert_caffe_to_tm] Error 1 CMakeFiles/Makefile2:491: recipe for target 'tengine_model/convert/CMakeFiles/convert_caffe_to_tm.dir/all' failed make[1]: [tengine_model/convert/CMakeFiles/convert_caffe_to_tm.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... [ 43%] Building CXX object mtcnn/CMakeFiles/MTCNN.dir/test_mtcnn.cpp.o [ 46%] Building CXX object ssd/CMakeFiles/SSD.dir//common/common.cpp.o [ 50%] Building CXX object mobilenet_ssd/CMakeFiles/MSSD.dir//common/common.cpp.o [ 53%] Building CXX object yolov2/CMakeFiles/YOLOV2.dir//common/common.cpp.o [ 56%] Building CXX object faster_rcnn/CMakeFiles/FASTER_RCNN.dir/__/common/common.cpp.o [ 60%] Linking CXX executable LIGHTEN_CNN /home/jiapy/workspace/tengine/Tengine_android_build/Openblas020-android/arm64/lib/libopenblas.so: undefined reference to stderr' clang++: error: linker command failed with exit code 1 (use -v to see invocation) lighten_cnn/CMakeFiles/LIGHTEN_CNN.dir/build.make:137: recipe for target 'lighten_cnn/LIGHTEN_CNN' failed make[2]: *** [lighten_cnn/LIGHTEN_CNN] Error 1 CMakeFiles/Makefile2:305: recipe for target 'lighten_cnn/CMakeFiles/LIGHTEN_CNN.dir/all' failed make[1]: *** [lighten_cnn/CMakeFiles/LIGHTEN_CNN.dir/all] Error 2 [ 63%] Building CXX object mtcnn/CMakeFiles/MTCNN.dir/__/common/common.cpp.o [ 66%] Building CXX object imagenet_classification/CMakeFiles/Classify.dir/model_config.cpp.o [ 70%] Linking CXX executable SSD [ 73%] Linking CXX executable MSSD [ 76%] Linking CXX executable YOLOV2 [ 80%] Linking CXX executable FASTER_RCNN [ 83%] Building CXX object imagenet_classification/CMakeFiles/Classify.dir/__/common/common.cpp.o [ 86%] Linking CXX executable MTCNN [ 90%] Linking CXX executable Classify /home/jiapy/workspace/tengine/Tengine_android_build/Openblas020-android/arm64/lib/libopenblas.so: undefined reference tostderr' clang++: error: linker command failed with exit code 1 (use -v to see invocation) mobilenet_ssd/CMakeFiles/MSSD.dir/build.make:137: recipe for target 'mobilenet_ssd/MSSD' failed make[2]: [mobilenet_ssd/MSSD] Error 1 CMakeFiles/Makefile2:415: recipe for target 'mobilenet_ssd/CMakeFiles/MSSD.dir/all' failed make[1]: [mobilenet_ssd/CMakeFiles/MSSD.dir/all] Error 2 /home/jiapy/workspace/tengine/Tengine_android_build/Openblas020-android/arm64/lib/libopenblas.so: undefined reference to stderr' clang++: error: linker command failed with exit code 1 (use -v to see invocation) ssd/CMakeFiles/SSD.dir/build.make:137: recipe for target 'ssd/SSD' failed make[2]: *** [ssd/SSD] Error 1 CMakeFiles/Makefile2:195: recipe for target 'ssd/CMakeFiles/SSD.dir/all' failed make[1]: *** [ssd/CMakeFiles/SSD.dir/all] Error 2 /home/jiapy/workspace/tengine/Tengine_android_build/Openblas020-android/arm64/lib/libopenblas.so: undefined reference tostderr' clang++: error: linker command failed with exit code 1 (use -v to see invocation) yolov2/CMakeFiles/YOLOV2.dir/build.make:137: recipe for target 'yolov2/YOLOV2' failed make[2]: [yolov2/YOLOV2] Error 1 CMakeFiles/Makefile2:140: recipe for target 'yolov2/CMakeFiles/YOLOV2.dir/all' failed make[1]: [yolov2/CMakeFiles/YOLOV2.dir/all] Error 2 /home/jiapy/workspace/tengine/Tengine_android_build/Openblas020-android/arm64/lib/libopenblas.so: undefined reference to stderr' clang++: error: linker command failed with exit code 1 (use -v to see invocation) faster_rcnn/CMakeFiles/FASTER_RCNN.dir/build.make:137: recipe for target 'faster_rcnn/FASTER_RCNN' failed make[2]: *** [faster_rcnn/FASTER_RCNN] Error 1 CMakeFiles/Makefile2:250: recipe for target 'faster_rcnn/CMakeFiles/FASTER_RCNN.dir/all' failed make[1]: *** [faster_rcnn/CMakeFiles/FASTER_RCNN.dir/all] Error 2 /home/jiapy/workspace/tengine/Tengine_android_build/Openblas020-android/arm64/lib/libopenblas.so: undefined reference tostderr' clang++: error: linker command failed with exit code 1 (use -v to see invocation) mtcnn/CMakeFiles/MTCNN.dir/build.make:167: recipe for target 'mtcnn/MTCNN' failed make[2]: [mtcnn/MTCNN] Error 1 CMakeFiles/Makefile2:85: recipe for target 'mtcnn/CMakeFiles/MTCNN.dir/all' failed make[1]: [mtcnn/CMakeFiles/MTCNN.dir/all] Error 2 /home/jiapy/workspace/tengine/Tengine_android_build/Openblas020-android/arm64/lib/libopenblas.so: undefined reference to `stderr' clang++: error: linker command failed with exit code 1 (use -v to see invocation) imagenet_classification/CMakeFiles/Classify.dir/build.make:152: recipe for target 'imagenet_classification/Classify' failed make[2]: [imagenet_classification/Classify] Error 1 CMakeFiles/Makefile2:360: recipe for target 'imagenet_classification/CMakeFiles/Classify.dir/all' failed make[1]: [imagenet_classification/CMakeFiles/Classify.dir/all] Error 2 Makefile:83: recipe for target 'all' failed make: *** [all] Error 2

[pangchaogit]

I got same problems, how do you deal with it?

[dzyjjpy]

change api level from 21 to 26, I solved the issue

[dzyjjpy]

@pangchaogit

[pangchaogit]

Thank you! , I fixed the problem by your ways.