Android C++Matlab NDK错误:未定义对:rtNaN的引用

Android C++ Matlab NDK error: undefined reference to ::rtNaN

本文关键字：rtNaN 引用 未定义 NDK 错误 Android C++Matlab      更新时间：2023-10-16

我在尝试将Matlab代码包含到Android Studio的NDK中时遇到了一些问题。但错误发生了：

Error:FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':accelerometer:externalNativeBuildDebug'.
> Build command failed.
Error while executing 'C:UsersGraceAppDataLocalAndroidSdkcmake3.6.3155560bincmake.exe' with arguments {--build C:UsersGraceDocumentstest2Sensorgraphchangedaccelerometer.externalNativeBuildcmakedebugarm64-v8a --target accelerometergraph}
[1/1] Linking CXX shared library C:UsersGraceDocumentstest2Sensorgraphchangedaccelerometerbuildintermediatescmakedebugobjarm64-v8alibaccelerometergraph.so
FAILED: cmd.exe /C "cd . && C:UsersGraceAppDataLocalAndroidsdkndk-bundletoolchainsllvmprebuiltwindows-x86_64binclang++.exe  -target aarch64-none-linux-android -gcc-toolchain C:/Users/Grace/AppData/Local/Android/sdk/ndk-bundle/toolchains/aarch64-linux-android-4.9/prebuilt/windows-x86_64 --sysroot=C:/Users/Grace/AppData/Local/Android/sdk/ndk-bundle/platforms/android-21/arch-arm64 -fPIC -g -DANDROID -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -Wa,--noexecstack -Wformat -Werror=format-security -fno-exceptions -fno-rtti -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 -Wall -O0 -fno-limit-debug-info -O0 -fno-limit-debug-info  -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -Wl,--build-id -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--no-undefined -Wl,-z,noexecstack -Qunused-arguments -Wl,-z,relro -Wl,-z,now -shared -Wl,-soname,libaccelerometergraph.so -o C:UsersGraceDocumentstest2Sensorgraphchangedaccelerometerbuildintermediatescmakedebugobjarm64-v8alibaccelerometergraph.so CMakeFiles/accelerometergraph.dir/sensorgraph.cpp.o  -landroid -lGLESv2 -llog -lm "C:/Users/Grace/AppData/Local/Android/sdk/ndk-bundle/sources/cxx-stl/gnu-libstdc++/4.9/libs/arm64-v8a/libgnustl_static.a" && cd ."
CMakeFiles/accelerometergraph.dir/sensorgraph.cpp.o: In function `sensorgraph::rt_InitInfAndNaN(unsigned long)':
C:UsersGraceDocumentstest2Sensorgraphchangedaccelerometersrcmaincpp/sensorgraph.cpp:306: undefined reference to `sensorgraph::rtNaN'
C:UsersGraceDocumentstest2Sensorgraphchangedaccelerometersrcmaincpp/sensorgraph.cpp:306: undefined reference to `sensorgraph::rtNaN'
CMakeFiles/accelerometergraph.dir/sensorgraph.cpp.o: In function `sensorgraph::b_getAllPeaks(double const*, double*, int*, double*, int*, double*, int*)':
C:UsersGraceDocumentstest2Sensorgraphchangedaccelerometersrcmaincpp/sensorgraph.cpp:725: undefined reference to `sensorgraph::rtNaN'
C:UsersGraceDocumentstest2Sensorgraphchangedaccelerometersrcmaincpp/sensorgraph.cpp:725: undefined reference to `sensorgraph::rtNaN'
CMakeFiles/accelerometergraph.dir/sensorgraph.cpp.o: In function `sensorgraph::b_findLocalMaxima(double const*, double*, int*, double*, int*)':
C:UsersGraceDocumentstest2Sensorgraphchangedaccelerometersrcmaincpp/sensorgraph.cpp:431: undefined reference to `sensorgraph::rtNaN'
CMakeFiles/accelerometergraph.dir/sensorgraph.cpp.o:C:UsersGraceDocumentstest2Sensorgraphchangedaccelerometersrcmaincpp/sensorgraph.cpp:431: more undefined references to `sensorgraph::rtNaN' follow
clang++.exe: 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.

这一行出现了一个错误：

for (ii = 0; ii < i; ii++) {
yTemp[ii_data[ii] - 1] = rtNaN;  <- error
}

其中rtNaN的定义是

typedef double real_T;
static real_T rtNaN;

在源文件中

我在build.gradle文件中添加了以下内容：android{compileSdk版本23//23.0.0buildTools版本"23.0.3">

sourceSets.main{
jni.srcDirs=[]
jniLibs.srcDir 'src/main/libs'
}

}

我可以问一下为什么会出现这个错误，以及如何修复它吗？感谢

尝试将其添加到应用程序级构建中。gradle:-

android{
defaultConfig{
ndk {
abiFilters "armeabi", "armeabi-v7a", "x86"
}
}
}

这可能是因为你的应用程序找不到你的.so文件。这些线路将有助于正确定位。

您必须在编译器构建路径中包含传感器图库的路径：

-L"路径/至/斯芬克斯">

完成后，未解决的符号问题将得到解决。

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