Android项目跑不起来,工程跑不起来 · Issue #2 · YuGongCharley/MTCNN_facenet_Android

本文记录了一次在使用MTCNN_facenet_Android项目时遇到的编译错误，涉及ncnn库的未定义引用和警告。主要内容包括解决C++警告、链接阶段的错误，并重点在于修复ncnn库调用的缺失链接。

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还是会报错

Build command failed.

Error while executing process /Users/hewanchao/Library/Android/sdk/cmake/3.10.2.4988404/bin/ninja with arguments {-C /Users/hewanchao/Downloads/MTCNN_facenet_Android-master/app/.cxx/cmake/debug/armeabi-v7a charleyszcFace}

ninja: Entering directory `/Users/hewanchao/Downloads/MTCNN_facenet_Android-master/app/.cxx/cmake/debug/armeabi-v7a'

[1/6] Building CXX object CMakeFiles/charleyszcFace.dir/src/main/cpp/FaceNet.cpp.o

../../../../src/main/cpp/FaceNet.cpp:31:13: warning: explicitly assigning value of variable of type 'int' to itself [-Wself-assign]

threadNum = threadNum;

~~~~~~~~~ ^ ~~~~~~~~~

../../../../src/main/cpp/FaceNet.cpp:50:45: warning: unused variable 'square' [-Wunused-variable]

double ret = 0.0, mod1 = 0.0, mod2 = 0.0, square = 0.0, result = 0.0;

2 warnings generated.

[2/6] Building CXX object CMakeFiles/charleyszcFace.dir/src/main/cpp/Liveness.cpp.o

In file included from ../../../../src/main/cpp/Liveness.cpp:4:

../../../../src/main/cpp/Liveness.h:25:17: warning: private field 'mean_vals' is not used [-Wunused-private-field]

const float mean_vals[3] = {104.f, 117.f, 123.f};

../../../../src/main/cpp/Liveness.h:26:9: warning: private field 'img_w' is not used [-Wunused-private-field]

int img_w, img_h;

../../../../src/main/cpp/Liveness.h:26:16: warning: private field 'img_h' is not used [-Wunused-private-field]

int img_w, img_h;

3 warnings generated.

[3/6] Building CXX object CMakeFiles/charleyszcFace.dir/src/main/cpp/FaceAlign.cpp.o

[4/6] Building CXX object CMakeFiles/charleyszcFace.dir/src/main/cpp/FaceEngine_jni.cpp.o

../../../../src/main/cpp/FaceEngine_jni.cpp:359:16: warning: implicit conversion of NULL constant to 'jboolean' (aka 'unsigned char') [-Wnull-conversion]

return NULL;

~~~~~~ ^~~~

'\0'

1 warning generated.

[5/6] Building CXX object CMakeFiles/charleyszcFace.dir/src/main/cpp/detecte.cpp.o

../../../../src/main/cpp/detecte.cpp:331:9: warning: unused variable 'count' [-Wunused-variable]

int count = 0;

1 warning generated.

[6/6] Linking CXX shared library ../../../../build/intermediates/cmake/debug/obj/armeabi-v7a/libcharleyszcFace.so

FAILED: ../../../../build/intermediates/cmake/debug/obj/armeabi-v7a/libcharleyszcFace.so

: && /Users/hewanchao/Library/Android/sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++ --target=armv7-none-linux-androideabi22 --gcc-toolchain=/Users/hewanchao/Library/Android/sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/darwin-x86_64 --sysroot=/Users/hewanchao/Library/Android/sdk/ndk/21.0.6113669/toolchains/llvm/prebuilt/darwin-x86_64/sysroot -fPIC -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security -fopenmp -O2 -fvisibility=hidden -fvisibility-inlines-hidden -fomit-frame-pointer -fstrict-aliasing -ffunction-sections -fdata-sections -ffast-math -std=c++11 -frtti -fexceptions -O0 -fno-limit-debug-info -Wl,--exclude-libs,libgcc_real.a -Wl,--exclude-libs,libatomic.a -static-libstdc++ -Wl,--build-id -Wl,--fatal-warnings -Wl,--exclude-libs,libunwind.a -Wl,--no-undefined -Qunused-arguments -shared -Wl,-soname,libcharleyszcFace.so -o ../../../../build/intermediates/cmake/debug/obj/armeabi-v7a/libcharleyszcFace.so CMakeFiles/charleyszcFace.dir/src/main/cpp/FaceAlign.cpp.o CMakeFiles/charleyszcFace.dir/src/main/cpp/FaceEngine_jni.cpp.o CMakeFiles/charleyszcFace.dir/src/main/cpp/FaceNet.cpp.o CMakeFiles/charleyszcFace.dir/src/main/cpp/Liveness.cpp.o CMakeFiles/charleyszcFace.dir/src/main/cpp/detecte.cpp.o ../../../../src/main/jniLibs/armeabi-v7a/libncnn.a ../../../../src/main/jniLibs/armeabi-v7a/libopencv_java3.so -ljnigraphics -lz -llog -latomic -lm && :

../../../../src/main/cpp/detecte.cpp:278: error: undefined reference to 'ncnn::resize_bilinear(ncnn::Mat const&, ncnn::Mat&, int, int, ncnn::Allocator*, int)'

../../../../src/main/cpp/detecte.cpp:314: error: undefined reference to 'ncnn::resize_bilinear(ncnn::Mat const&, ncnn::Mat&, int, int, ncnn::Allocator*, int)'

../../../../src/main/cpp/detecte.cpp:334: error: undefined reference to 'ncnn::copy_cut_border(ncnn::Mat const&, ncnn::Mat&, int, int, int, int, ncnn::Allocator*, int)'

../../../../src/main/cpp/detecte.cpp:336: error: undefined reference to 'ncnn::resize_bilinear(ncnn::Mat const&, ncnn::Mat&, int, int, ncnn::Allocator*, int)'

../../../../src/main/cpp/detecte.cpp:358: error: undefined reference to 'ncnn::copy_cut_border(ncnn::Mat const&, ncnn::Mat&, int, int, int, int, ncnn::Allocator*, int)'

../../../../src/main/cpp/detecte.cpp:360: error: undefined reference to 'ncnn::resize_bilinear(ncnn::Mat const&, ncnn::Mat&, int, int, ncnn::Allocator*, int)'

../../../../src/main/jniLibs/armeabi-v7a/libncnn.a(net.cpp.o):net.cpp:function ncnn::Net::load_param(AAssetManager*, char const*): error: undefined reference to 'AAssetManager_open'

../../../../src/main/jniLibs/armeabi-v7a/libncnn.a(net.cpp.o):net.cpp:function ncnn::Net::load_param(AAssetManager*, char const*): error: undefined reference to 'AAsset_close'

../../../../src/main/jniLibs/armeabi-v7a/libncnn.a(net.cpp.o):net.cpp:function ncnn::Net::load_param_bin(AAssetManager*, char const*): error: undefined reference to 'AAssetManager_open'

../../../../src/main/jniLibs/armeabi-v7a/libncnn.a(net.cpp.o):net.cpp:function ncnn::Net::load_param_bin(AAssetManager*, char const*): error: undefined reference to 'AAsset_close'

../../../../src/main/jniLibs/armeabi-v7a/libncnn.a(net.cpp.o):net.cpp:function ncnn::Net::load_model(AAssetManager*, char const*): error: undefined reference to 'AAssetManager_open'

../../../../src/main/jniLibs/armeabi-v7a/libncnn.a(net.cpp.o):net.cpp:function ncnn::Net::load_model(AAssetManager*, char const*): error: undefined reference to 'AAsset_close'

../../../../src/main/jniLibs/armeabi-v7a/libncnn.a(datareader.cpp.o):datareader.cpp:function ncnn::DataReaderFromAndroidAsset::scan(char const*, void*) const: error: undefined reference to 'AAsset_seek'

../../../../src/main/jniLibs/armeabi-v7a/libncnn.a(datareader.cpp.o):datareader.cpp:function ncnn::DataReaderFromAndroidAsset::read(void*, unsigned int) const: error: undefined reference to 'AAsset_read'

clang++: error: linker command failed with exit code 1 (use -v to see invocation)

ninja: build stopped: subcommand failed.