linker

问题 After moving my code from VS2017 to VS2019 I stumbled into strange linker behaviour -- it seems like it references objects from static library that it shouldn't have (which in turn refer to symbols that can't be resolved). Basically, I end up with this: 1>tools.lib(object_storage_azure.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __cdecl azure::storage::operation_context::operation_context(void)" (__imp_??0operation_context@storage@azure@@QEAA@XZ) 1>tools

问题 I'm trying to compile lambda-expressions from scheme to llvm-ir and am having trouble with position independet code. source: (lambda (x) (display x)) target: bunch of declares... define %SObj* @G7() { entry: %calltmp = call %SObj* @closure_create(i64 ptrtoint (%SObj* (%SObj*)* @G8 to i64), %SObj* null) ret %SObj* %calltmp } define %SObj* @G8(%SObj* %G6) { entry: %calltmp = call %SObj* @display(%SObj* %G6) ret %SObj* %calltmp } define i32 @main(i32 %0, i8** %1) { entry: %calltmp = call %SObj*

问题 Most of the sources online state that you can statically link glibc, but discourage from doing so; e.g. centos package repo: The glibc-static package contains the C library static libraries for -static linking. You don't need these, unless you link statically, which is highly discouraged. These sources rarely (or never) say why that would be a bad idea. 回答1: The reasons given in other answers are correct, but they are not the most important reason. The most important reason why glibc should

问题 Most of the sources online state that you can statically link glibc, but discourage from doing so; e.g. centos package repo: The glibc-static package contains the C library static libraries for -static linking. You don't need these, unless you link statically, which is highly discouraged. These sources rarely (or never) say why that would be a bad idea. 回答1: The reasons given in other answers are correct, but they are not the most important reason. The most important reason why glibc should

问题 What are the best practices for choosing the linking method in VC++? Can anything/everything be statically linked? On a dynamically linked project, is the relative/absolute location of the linked library important? What are the pros and cons ? added : I was mainly referring to lib files. Do they behave same as dll linking? 回答1: Dynamic links allow you to upgrade individual DLLs without recompiling your applications. That is why windows can be upgraded without your application being recompiled

问题 A third party provided me a static lib (.a) to link with on solaris station. I tried to compile with sunpro, and failed at link step. I suppose the issue is coming from the compiler I use (gcc instead?) or simply its version (as the std lib provided by the compiler could change from the version expected by the library AFAIK it could leads to errors at link step). How could I know which compiler was used to generate this lib? Is there some tools doing that? Some option in sunpro/gcc or

问题 I'm trying to build a CMake project that calls C code from C++, and I'm getting undefined symbols, even though I'm (AFAIK) properly using "extern C". CMakeLists.txt: cmake_minimum_required(VERSION 3.0) project(CTest LANGUAGES CXX) add_executable(test main.cpp lib.c) main.cpp: #include "lib.h" int main() { printit(); return 0; } lib.c: #include <stdio.h> #include "lib.h" int printit() { printf("Hello world\n"); return 0; } lib.h: extern "C" int printit(); That gives me an "undefined reference

问题 I'm trying to build my C++ project in VSCode. However, I'm experiencing link issues with OpenCV "error LNK2001: unresolved external symbol". I've build all the libraries I use with vcpkg. I build using this .bat file: @echo off if exist "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Auxiliary\Build\vcvarsall.bat" ( call "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Auxiliary\Build\vcvarsall.bat" x64 ) else ( call "C:\Program Files (x86)\Microsoft

问题 I'm trying to build my C++ project in VSCode. However, I'm experiencing link issues with OpenCV "error LNK2001: unresolved external symbol". I've build all the libraries I use with vcpkg. I build using this .bat file: @echo off if exist "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Auxiliary\Build\vcvarsall.bat" ( call "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Auxiliary\Build\vcvarsall.bat" x64 ) else ( call "C:\Program Files (x86)\Microsoft

问题 I started to use boost test for my project, but I need to mock static methods, so I try to switch to GTest and GMock. I followed the really clear guide from google, and the CMakeLists seems to be doing its job : CMakeLists.txt cmake_minimum_required(VERSION 3.15) project(POC_V4) set(CMAKE_CXX_STANDARD 14) set(CMAKE_CXX_STANDARD_REQUIRED TRUE) # Specifying we are using pthread for UNIX systems. set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${TORCH_CXX_FLAGS} -pthread -Wall") find_package(OpenCV