add_library (MathFunctions mysqrt.cxx) To make use of the new library we will add an add_subdirectory () call in the top-level CMakeLists.txt file so that the library will get built. We add the new library to the executable, and add MathFunctions as an include directory so that the mysqrt.h header file can be found. Run the appropriate vsdevcmd.bat file (x86/x64). For more information, see Building on the command line .Switch to your output folder.Run CMake to build or configure your app. In this section we will show how the BUILD_SHARED_LIBS variable can be used to control the default behavior of add_library () , and allow control over how libraries without an explicit type ( If we use CMake, we augment the shared library target: target_compile_definitions (mysharedlib PRIVATE MYSHAREDLIB_LIBRARY) If we use qmake, we add DEFINES += MYSHAREDLIB_LIBRARY to the .pro file of the shared library. 1 cmake_minimum_required(VERSION 3.9) xxxxxxxxxx 1 1 project(mylib VERSION 1.0.1 DESCRIPTION "mylib description") xxxxxxxxxx 5 1 add_library(mylib SHARED 2 sources/animation.cpp 3 sources/buffers.cpp 4 [] 5 ) xxxxxxxxxx 1 1 set_target_properties(mylib PROPERTIES VERSION ${PROJECT_VERSION}) xxxxxxxxxx 1 I have provided the full code for this example on Github. The libconvert shared library was developed INCLUDE_DIRECTORIES (/path/to/headers) ADD_EXECUTABLE (TARGET target.c) TARGET_LINK_LIBRARIES (TARGET_FILE "-L/path/to/shared/library" SHARED_LIB_name) CMakeLists.txt in shape, rectangle and square are the same: target_sources(app PRIVATE base.cpp base.h) Shared library The code for this example is here on GitHub. CMAKE_SYSTEM_LIBRARY_PATH CMAKE_SYSTEM_FRAMEWORK_PATH The platform paths that these variables contain are locations that typically include installed software. This project can be used as a starting template to create a shared library (.dll on Windows / .so on Linux). The notable features of this template are the Simple project to demonstrate how to create shared (dynamic) library using C++ & CMake library cxx dynamic-library shared-library cmake-shared-library cmake-sample This is a gotcha when using object libraries. Making a library Making a library is done with add_library, and is just about as simple: add_library(one STATIC two.cpp three.h) You get to pick a type of library, STATIC, SHARED, or MODULE. Not only does it complicate the install, but it also means you have to make sure that RPATH gets set right (or use LD_LIBRARY_PATH), which was the gist of the original issue. GitHub - alessiosacco/cmake-shared-library: Example CMake Shared Library with install / export support and unit testing using Google Test main 1 branch 0 tags Go to file Code alessiosacco Replace tabs with spaces db3ec8f on Aug 20, 2021 4 commits cmake Initial Commit 14 months ago include/ SharedLibrary Replace tabs with spaces 14 months ago src How to create a shared library with cmake? cmake_minimum_required(VERSION 3.8 FATAL_ERROR) project(cmake_and_cuda LANGUAGES CXX CUDA) include(CTest) add_library(particles STATIC randomize.cpp randomize.h particle.cu particle.h v3.cu v3.h ) In this CMake Shared Library. Update: now using modern cmake (version >= 3.9), since commit 46f0b93. Im setting up an imported library: add_library(Example::LibA SHARED IMPORTED) set_target_properties(Example::LibA PROPERTIES IMPORTED_LOCATION "${LibA_LIBRARY}" IMPORTED_IMPLIB "${LibA_LIBRARY}" There are four steps:Compile C++ library code to object file (using g++)Create shared library file (.SO) using gcc --sharedCompile the C++ code using the header library file using the shared library (using g++)Set LD_LIBRARY_PATHRun the executable (using a.out)Step 1: Compile C code to object file This is done in the build system of the library. Listing 1 shows the CMake file for a CUDA example called particles. 01 May 2019 cmake, cpp, projecteuler 1# CMakeLists.txt for PrimUtil a library for utilities related to working I had a hard time finding a clear example of how to build a shared library, install it (in my case in /usr/local/) and then use the installed library in a new project, so I decided to An example being A minimal example using cmake to create a c++ shared library. This example shared library embeds functionality for unit conversion between both Celsius and Fahrenheit, and kilometers and miles. Learn how to create different library types with CMake, and how to include them in your executables! I got a project where I use a third party library (Windows). Make sure that you have CMake installed prior to running this example (go here for instructions). In this article I describe a simple way to create a shared library in your C++ / CMake project while accounting for platform differences. If a library does not export any symbols, it must not be declared as a SHARED library. The top level directory has two subdirectories called ./Demo There are three directories involved. This minimal CMakeLists.txt file compiles a simple shared library: cmake_minimum_required (VERSION 2.8) project (test) set (CMAKE_BUILD_TYPE Release) cmake-example-library CMake library example that can be found using find_package (). cmake Add Directories to Compiler Include PathSyntax #Parameters #Add a Project's Subdirectory #. Thus, the file myHeader.h in the project's include subdirectory can be included via #include "myHeader.h" in the main.cpp file. If the target youre building is a library, CMake will build a static one by default. I'm also providing a sample project at GitHub @leimao: Like @ax3l says, if you don't have to build a separate shared library, it is easier to avoid it. A.lib A.dll B.dll B.dll is a dependency of A.dll not exposed to the A.dll interface. If you leave this choice off, the value of BUILD_SHARED_LIBS will be used to pick between STATIC and SHARED. add_library (my_lib lib.cpp) The CMake variable BUILD_SHARED_LIBS controls whenever to build an static ( OFF) or an shared ( ON) library, using for example cmake .. Instead of using target_link_libraries() to link to the object library, try the following: add_library(runtime OBJECT ${runtime_src}) add_library(mylib $) This causes the object files from runtime to be used as the sources for mylib (whether it be shared or static.) This can all be achieved with CMakes add_library () function. For example, a Windows resource DLL or a managed C++/CLI DLL that exports no unmanaged To build a shared library, set BUILD_SHARED_LIBS=ON like this: cmake -DBUILD_SHARED_LIBS=ON Some generators (Visual Studio and XCode) support building multiple configurations of your projects in one build directory. 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