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Questions tagged [dynamic-library]

Compiled binaries capable to be loaded in the process address space in runtime.

Dynamic Libraries are compiled binaries capable of being loaded/unloaded into/from the process address space at runtime.

In the Unix world, they are called shared libraies; in the Windows world, they are known as DLLs (dynamically-loadable libraries).

They can be loaded simultaneously into multiple processes, saving RAM and disk space.

Their file format is similar to, or even the same as, that of binary executables.

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R package installation on MacOS: Image not found error

I tried to install rgdal package in R on my Mac machine, but the error message came out as below: Installing package into ‘/Users/isong/Library/R/4.0/library’ (as ‘lib’ is unspecified) * installing *source* package ‘rgdal’ ... ** using staged…
Felix Song
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How to put breakpoints inside a linked library in CLion?

Is there a way to put a breakpoint inside a library linked in CLion? The library is compiled with debug symbols. I can step inside of its code if I put a breakpoint in my code, but I would like to put a breakpoint directly inside of it. The main…
debevv
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shared object symbol inclusion

I'm writting a program that relies on a shared object libLTK.so I also write the code of libLTK.so which relies on libunwind.so libunwind.so was fetched using regular package installation. I am able to compile libLTK.so and the resulting ELF…
Lewis Anesa
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On linking of shared libraries, are they really final, and if so, why?

I am trying to understand more about linking and shared library. Ultimately, I wonder if it's possible to add a method to a shared library. For instance, suppose one has a source file a.c, and a library lib.so (without the source file). Let's…
TuTor
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Ctypes. How to pass struct by reference?

I try to write Python wrapper for C library using ctypes. So far I have: C.h typedef struct { int erorrCode; char * Key; } A; #ifdef __cplusplus extern "C" { #endif EXPORT void __stdcall DestroyA(A…
Bohdan Natsevych
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Why is my main not finding the functions from my shared library?

I have 4 separate functions in 4 different files. The functions look like this: SieveOfEratosthenes.cpp bool SieveOfEratosthenes(int n) { // } They all have no includes. In my main.cpp program I have //Includes void compare(bool (*f)(int))…
UserX
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Compiling OpenSSL in Windows - generated LIB uses wrong name for DLL files

I'm trying to compile OpenSSL 1.1.1d version locally. Due to my project, I need to edit windows-makefile.tmp under Configuration folder. I have to prepend the file extensions like so: our $objext = $target{obj_extension} || "_vc10.obj"; our…
JayM
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Getting around __declspec(dllimport) in windows to linux project conversion

Im in the process of converting a visual studio c++ framework over into a linux build, and in the process of eliminating windows dependencies I ran into a whole bunch of __declspec(dllimport) calls in some header files. These header files define a…
Bendrix
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Cannot Load C dynamic library with C Program compile with liblua.a (lua5.3)

I first download lua-5.3.5 , and put the source in my working directory and compile it with make linux so I got the liblua.a and lua binary file in ./lua-5.3.5/src. And then I write a C Dynamic Library like this : #include #include…
Lynton
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Graphviz as library in windows

I am contacting you regarding Graphviz libraries. I have a bug that I observed when using graphviz as a library within c++ code and qt creator on windows. Based on the example from the Documentation, I used the following function to convert a dot…
froz
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Calling dlopen() twice on a dynamic library with undefined symbol

I'm opening a dynamic library with a call to dlopen(): void *handle = dlopen("mylib.so", RTLD_LAZY | RTLD_GLOBAL); if (!handle) printf("%s", dlerror()); When this is called for a library which has an undefined symbol, the returned handle is…
user3132457
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how to add libxml2 as dependency to SwiftPM

I want to update one library to use Swift Package Manager. Currently, it based on Carthage/Pods. But it uses libxml2 (#import ) as dependency. I have tried to add spm support but got an error this framework could not be found -> libxml/xmlreader.h I…
swift2geek
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Finding symbol with dlsym for symbol in namespace

I have a dynamic library I want to load. I have defined a function add(): #include #include "mymath.h" #define EXPORT __attribute__((visibility("default"))) EXPORT int mymath::add(int a, int b) { return a + b; } This symbol sits…
gonczor
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share allocated memory buffer between c++ dynamic library and main C program

For work with C based socket server framework, we need to transfer data between socket server thread of C-based program and C++ based DLL. Operation system MacOs. Inside DLL everything works fine and we are able to manage OCR core and DB. Inside of…
dharmabook.ru
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Python and C++ integration.Problems with dynamic library

I use Swig.(Mac os 10.13) My shell script: swig -c++ -python -o example_wrap.cpp example.i g++ -c -std=c++17 -fPIC example.cpp g++ -c -std=c++17 -fPIC example_wrap.cpp -o example_wrap.o…
nnuttertools
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