However, you can have a dynamic pybind11 module that links to a static library. target_link_libraries (test2 library.dll) is wrong. 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). Here's my situation: I'm trying to create a cross platform project that depends on multiple libraries, I decided that it would be nice to compile the libraries rather than linking it's binaries. Background A shared library packs compiled code of functionality that the developer wants to share with other developers. 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. 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 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. They are usually faster than the shared libraries because a set of commonly used object files is put into a single library executable file. Using ar or library tools to combine the static libraries seems to be the only way to go. Finally, when building your projects, I recommend using static by default. To link external libraries, best practice is to use or create FindModule for given external library. `target_link_libraries (C1 EXECUTABLE PUBLIC B)` (Instead of an executable exeC1 you could have created a shared library libC1 instead. Instead, CMake makes sure to link both static library files libB and libA when e.g. Create and install the shared library's pkg-config file with 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) Unless you have a specific reason to use shared or module libraries, you can avoid compatibility issues when linking outdated shared libraries. Historically, libraries could only be static. To accomplish this we need to add BUILD_SHARED_LIBS to the top-level CMakeLists.txt. The correct commands are find_library or (better) find_package. 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 target_link_libraries (): to tell CMake that app is dependent on geo library. Projects that want to support such . The files created by hdf5 in the $ {INSTALL_DIR}/shared/cmake folder are for use by the find_package cmake command. First : Static and shared libraries are built in two different ways. 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. You should not be manually creating imported static libraries for system libraries! Under each subdirectory, there is a CMakeList.txt to compile a static library for each feature. At this point we built the shared library and installed it system-wide, with the help of CMake. I have been able to make this work by manually declaring all the dependencies, direct + transitive through a series of: add . Link Static CUDA Library using CMake. creating an executable exeC1 using target C1 which just links (via `target_link_libraries`) to target B. So the import library for PocoFoundation.dll will be named PocoFoundation.lib, while the static library using static runtimes . In the main CMakeList.txt. Did I miss anything? 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. CMake comes with numerous modules that aid in finding various well-known libraries and packages. A SHARED or STATIC library may be marked with the FRAMEWORK target property to create an OS X Framework. : For sake of simplicity, in this article I am not covering C++20 modules, link-time optimization, or import libraries. It covers three scenarios: (1) Calling GCC directly from the terminal, building with a Makefile and auto-generating the build environment with CMake. However, CMake generates static libraries otherwise. Shared library files usually have .dll (Windows), .so (Linux), or .dylib (macOS) extensions. 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 ). This is an example linking SDL2. Although this question is old. However, this is fundamentally incompatible with CMake's model of linking, which admits no properties on the link itself. As a final step, it's recommended to create and install a so called pkg-config file. This process usually works if the static library has no CUDA code . If they are shared libraries you need to take care of deployment. Greetings, In my CMakeLists.txt I declare a shared library target (for Android/JNI): add_library(native-lib SHARED native-lib.cpp) That depends on an external static library, which then depends upon a bunch of other static libraries (discoverable through pkg-config). If a library does not export any symbols, it must not be declared as a SHARED library. An object.o static cannot be used for a shared library. 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 I'm getting started with CMake, and loving the potential of it, thought having a though time finding understandable documentation or guides. A single library target can be built as static or shared, but not both. | CMakeLists.txt (1) | main.cpp | cudalib/ | CMakeLists.txt (2) | cppfunction.cpp | cudafunction.cu | cudalib.h. : In reality, unless used, global symbols in static libraries may be optimized out by the linker. It gets more complicated when the consumer itself might have switchable behavior which can select whether it wants to consume static or shared libs. Because it is a single file to be built, use of link commands are simpler than shared . target_include_directories (): is for making source files aware of the location of private headers relative to the project directory. The open source dependencies could be also shared libraries, or static libraries. Also, for installing, prefer to use the GNUInstallDirs module. 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 (). 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. Best, Wenzel. For example, a Windows resource DLL or a managed C++/CLI DLL that exports no unmanaged symbols would need to be a MODULE library. Hello! And vice verse : A shared library lib.so renamed to lib.a One can build multiple executables without the need to recompile the file. Note The target_link_libraries () command should be preferred whenever possible. When another target links to one of the libraries, CMake repeats the entire connected component. find_package (HDF5 NAMES hdf5 COMPONENTS C shared) to use the shared libraries find_package (HDF5 NAMES hdf5 COMPONENTS C static) to use the static libraries Every user and application can now potentially use the library. 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. In this case, the FindThreads module is what you need. Did you spot any errors in the post? This library is compiled for static linking. For example, the code This is a pretty popular question on Stack Overflow and all the answers . 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 ). Accepted answer. cmake_minimum_required (VERSION 3.12) project (GraphicTest) set (CMAKE_CXX_STANDARD 11) include_directories ("$ {PROJECT_SOURCE_DIR}/SDL") add . You are targeting the link library wrongly. On Oct 26, 2016, at 3:04 PM, Amit Aides notifications@github.com wrote: Hi, I am trying to (cmake) compile a binding to a library that uses a another library (dlib). Is it possible to set pybind11 to use . This presents problems for some consumers who specifically need one or the other. See the target_link_libraries () command for meaning of arguments. Shared library The most common decision is to build as a shared library ( BUILD_SHARED_LIBS set to TRUE in the CMake script). SHARED means a shared library, you can also make a static library with STATIC keyword, or an object file with OBJECT keyword. 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