shared-libraries

问题 do not understand this thing: I got a program in c and I am linking some second party static libs to that (as far as I know lhis libs can be also some wrappers on dlls) - does it can bring my program to 'implicitely' (I mean without explicit call to that in my code) run some initialisation code from whithin those libs (that will execute before my main() routine ? - or it cannot ?) I am asking here about about c code (eventualy about c code without any c++ feature but compiled in c++ mode by c

问题 Exception in thread "Thread-17" java.lang.UnsatisfiedLinkError: MetadataMatching.SimXMLModule.computeStructSimXML([Ljava/lang/String;)[D at MetadataMatching.SimXMLModule.computeStructSimXML(Native Method) at MetadataMatching.SimXMLModule.<init>(SimXMLModule.java:49) at MetadataMatching.MatchMetadata.run(MatchMetadata.java:65) computeStructSimXML" is a native method implemented by C++ in "libSimXMLModule.so Why it prompts throw java.lang.UnsatisfiedLinkError , anyone can help me ? Thank you

问题 I am trying to incorporate some compiled C code into an Android app. I've been able to use the NDK to build the source and it has produced both a .so (7kB) and a .a (nearly 2MB). I'm using Xamarin and all the instructions say to include the .so in the project. I've done that and the application loads the library. However it throws an EntryPointNotFoundException exception. This doesn't surprise me because the .so contains nothing except RTL support functions. The actual code is in the .a. So I

问题 Is there a way to get the file path/file name of the .so that is currently under execution by a thread? The program is written in c++ and run on a 64-bit Linux 3.0 machine. 回答1: You can sequentially read (from inside your process) the file /proc/self/maps to get the memory mapping (including those for shared objects) of the current process. Then you could get your program counter (or those of the caller) and find in which segment it is. Perhaps backtrace or GCC builtin_return_address is

问题 Here in my code there are two Textinput where whatever i write and press TouchableOpacity , it generates QRCode , now when I am pressing QRCode for long time ,it is asking for gallery permission , but after that not save or download , Seriously I need help , Please . This is the git link , i have uploaded full code "https://github.com/abhigyan9301/QRCode" import React, { Component } from 'react'; //import react in our code. import { StyleSheet, View,TextInput, TouchableOpacity, Text,} from

问题 I am working on a project that uses MPI to create parallel processes, each process uses dlopen() to load a module that's been build as a shared object library. One of the modules that I'm writing uses a 3rd party library (HDF). When I run the program, dlopen throws an error: dlopen failed: /home/jwomble/QTProjects/SurrogateModule/libsurrogate.so: undefined symbol: H5T_NATIVE_INT32_g The undefined symbol is in the HDF library. How do I load the symbols from the HDF library? Currently, my make

问题 My use case is I am training machine learners in python to find which model is most performant. But once I have finished choosing a model, I need to recapitulate that model in C for the shippable product. What we have been planning to do is pick apart the model in python, save all its parameters to a file, and load these in to a different model with the same structure in C. But this strikes me as unnecessarily complex if there is actually a way to save a trained model as some kind of black

问题 My use case is I am training machine learners in python to find which model is most performant. But once I have finished choosing a model, I need to recapitulate that model in C for the shippable product. What we have been planning to do is pick apart the model in python, save all its parameters to a file, and load these in to a different model with the same structure in C. But this strikes me as unnecessarily complex if there is actually a way to save a trained model as some kind of black

问题 I have a cmake c++ project that uses libCrypto++. I have FindCryptoPP.cmake module hosted here. Important parts are: find_library(CryptoPP_LIBRARY NAMES cryptopp DOC "CryptoPP library" NO_PACKAGE_ROOT_PATH PATHS "/usr/lib/x86_64-linux-gnu/" ) ... add_library(CryptoPP::CryptoPP UNKNOWN IMPORTED) set_target_properties(CryptoPP::CryptoPP PROPERTIES IMPORTED_LOCATION "${CryptoPP_LIBRARY}" INTERFACE_INCLUDE_DIRECTORIES "${CryptoPP_INCLUDE_DIR}") And this works fine, finds static library file (*.a)

问题 I have a C++ based project(many source files) compiled using gnu make via a makefile. I have an application which links a library, say mylib. Now mylib is owned by some other developer. I see 2 files present in the path where the library binaries are generated namely libmylib.so (shared object) and libmylib.a (static library archive file) My application makefile has below linker option to link the library mylib LDFLAGS+=-l:mylib ... Question is what version of the library mylib would be