It provides cross-platform macros for exporting library symbols, supporting Windows and Linux. MS Visual Studio has an option), but others don't, which is why CMake also won't allow it. At this point we built the shared library and installed it system-wide, with the help of CMake. But I'm developing this in Ubuntu 14.04, cuda 7.0 and cmake. Accepted answer. Note The target_link_libraries () command should be preferred whenever possible. and finally, yes, you need to specify PRIVATE <static libs> when linking your shared library, so the linker command line for your executable wouldn't have any static libs. Under each subdirectory, there is a CMakeList.txt to compile a static library for each feature. However, this is fundamentally incompatible with CMake's model of linking, which admits no properties on the link itself. Some compilers allow you to do this (e.g. CMake generally prefers to link libraries via full path anyways, so -l being ambiguous as to which gets picked is not the place to fix it. It compiles projects with compilers like GCC, Clang, Intel, MS Visual C++. . To accomplish this we need to add BUILD_SHARED_LIBS to the top-level CMakeLists.txt. Static and shared libraries are typically produced from the same set of sources, too, so new CMake users sometimes expect that a single call to add_library will provide whatever mix of types they want. Using ar or library tools to combine the static libraries seems to be the only way to go. This is an example linking SDL2. and I am trying to build the content of the cudalib folder as a static library that is afterwards linked to by the main project. Create and install the shared library's pkg-config file with CMake. As I know, CMake doesn't allow to mix STATIC and SHARED libraries. You are targeting the link library wrongly. CMake is frequently used in compiling open-source and commercial projects. Both in release, not debug mode. This is a pretty popular question on Stack Overflow and all the answers . Historically, libraries could only be static. (I forget what we do on HP-UX, where .sa means shared archive; we have very broad platform support also). See the target_link_libraries () command for meaning of arguments. jtxa (Josef Angstenberger) August 20, 2022, 2:17pm #2 The runtime of all objects (including those from libs) must match. | CMakeLists.txt (1) | main.cpp | cudalib/ | CMakeLists.txt (2) | cppfunction.cpp | cudafunction.cu | cudalib.h. See this answer for what your options are to deal with this. Although this question is old. The most common decision is to build as a shared library (BUILD_SHARED_LIBS set to TRUE in the CMake script). For any "library" by default we make a static library and link a shared library. Link Static CUDA Library using CMake. builds some shared libraries and links static ones into shared builds an executable, links it to shared libraries What I've managed to do with CMake: build some static libraries - add_library (staticfoo <src>) build some shared libraries - add_library (sharedfoo SHARED <src>) and link them - target_link_libraries (sharedfoo staticfoo) Currently you're compiling your library against the static and Main.obj against the DLL runtime. For example, in CMakeList.txt under feature_1 directory, it has a line to create static library target: add_library (feature_1, STATIC, $ {FEATURE_1_SRCS}) > 4. It supports compiling the library either as static or shared. STATIC libraries are archives of object files for use when linking other targets. An object.o static cannot be used for a shared library. Because it is a single file to be built, use of link commands are simpler than shared . We name the static libraries like foo.a.sa or foo.lib.sa. We could compile a static library with hidden symbols, then create a shared library based on this static library, and link the tests to the static . Currently I'm using the shared libraries but when linked to static library it's very fast, which I have experienced in Nsight editor. It uses modern CMake. target_link_libraries (test2 library.dll) is wrong. CMake is a cross-platform software for building projects written in C, C++, Fortran, CUDA and so on. SHARED libraries are linked dynamically and loaded at runtime. The project can be found at GitHub: % [ github.com/ashaduri/demo-library-simple] Libraries - A Quick Refresher A library can be either static or shared. If a library however is marked as "build_standalone", we only build the .sa form. Instead, find_library might have some top-level control for whether to prefer finding static or shared libraries. CMake comes with numerous modules that aid in finding various well-known libraries and packages. The library dependency graph is normally acyclic (a DAG), but in the case of mutually-dependent STATIC libraries CMake allows the graph to contain cycles (strongly connected components). This process usually works if the static library has no CUDA code . So the import library for PocoFoundation.dll will be named PocoFoundation.lib, while the static library using static runtimes . If you still have these declarations in place when trying to compile and link the library statically however, you might get those errors you mention I think I don't understand where it can appear at all when linking .exe, I connect the static libraries IMGUI and IMGUI_GLFW to Core 1 time, the Core - shared library and it is added as a target_link in the root directory, from where the conflict between Core and IMGUI is created, if IMGUI to .the exe is not linked 2 times for sure The list of standard modules is in the official documentation In case there is no standard module for your external library, you should write your own. They are usually faster than the shared libraries because a set of commonly used object files is put into a single library executable file. The solution is simple: When linking a shared library to your C application, you need to inform the GCC toolchain about the library you want to link. In the main CMakeList.txt. The manual of MSVC_RUNTIME_LIBRARY shows all 4 possible values. Where the library name is the name of the shared library, minus the first lib part and minus the .so file extension. If your staticfoo library is used solely as part of other libraries/executables, you can define it as. And vice verse : A shared library lib.so renamed to lib.a cmake_minimum_required (VERSION 3.12) project (GraphicTest) set (CMAKE_CXX_STANDARD 11) include_directories ("$ {PROJECT_SOURCE_DIR}/SDL") add . Failure to find it results in a hard failure find_static_library (tcmalloc_minimal TCMALLOC) You can then use this variable in your call to target_link_libraries and be sure you're linking against the static version target_link_libraries ($ {BIN_NAME} optimized $ {TCMALLOC}) Here you can see the result: $ make VERBOSE=1 | grep tcmalloc Every user and application can now potentially use the library. Here I'm facing two issues: I'm not necessarily using Windows, I might need to link against a .a file. MODULE libraries are plugins that are not linked into other targets but may be loaded dynamically at runtime using dlopen-like functionality. I've seen on StackOverflow that in order to link to a static library all that it's needed is to provide the full path to a (in the Windows case) .lib file. Poco static libraries can be distinguished from the import libraries for DLLs by the file name - static libs have "mt" ("mtd" for debug binaries, "md" and "mdd" when runtime library DLLs are used) appended to the name. For example, the code I have the following layout: Home - Questions - CMake: how create a single shared library from all static libraries of subprojects? What are shared and static libraries in CMake? I need to link cuda nppi static library (libnppi_static.a) to my runtime of the code. As a final step, it's recommended to create and install a so called pkg-config file. Specify libraries or flags to use when linking any targets created later in the current directory or below by commands such as add_executable () or add_library (). If you can build with shared libraries, it means that you have this in place (unless you use a .def file or use CMake's automated way of creating it ). Solution 1: If you are bound to create a static library, the solution you linked in your original post is probably the best ( CMake: include library dependencies in a static library ). When another target links to one of the libraries, CMake repeats the entire connected component. You do this with linker flag: -l<library name>. Firstly, the first parameter to add_library is the name of the library. 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 ( STATIC , SHARED, MODULE or OBJECT) are built. CMake utilizes build-systems such as Ninja, Linux make, Visual Studio, and Xcode. I have attached my CmakeLists.txt herewith. One can build multiple executables without the need to recompile the file. This can be any valid CMake name, and the filename for the compiled library will be that value in your build directory. 1 Like To link external libraries, best practice is to use or create FindModule for given external library. The open source dependencies could be also shared libraries, or static libraries. You cannot link libraries into libraries directly. First : Static and shared libraries are built in two different ways. Solution 2 target_link_libraries(my_target PRIVATE lib_name${CMAKE_STATIC_LIBRARY_SUFFIX}) , find_library might have some top-level control for whether to prefer finding static or.! 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