Link libraries cmake

Link libraries cmake. So, you can use target_link_libraries both for static and shared libraries in the same manner. link_directories() コマンドは、CMake でプロジェクトをビルドする際に、リンカがライブラリを探すディレクトリを指定するために使用されます。 使用方法. TODO 2: Click to show/hide answer. Jan 5, 2017 · target_link_libraries(main bingitup) bingitup is the same name you'd give a target if you create the static library in a CMake project: add_library(bingitup STATIC bingitup. target_link_libraries(XXX PUBLIC pthread) OR. However, i am quite confuse though why i can’t force my own apps to be linked with these 3 libraries. See documentation of the directory and target LINK_OPTIONS properties. Generally, a dependency should be specified in a use of target_link_libraries () with the PRIVATE keyword if it is used by only the implementation of a library, and not in the header files. . a libpq. Sazzad Hissain Khan. If you do this, then you can choose to omit Build and Run ¶. Getting this to work in an automated way, so that it works with the Apple Appstore and entitlements is a challenge. See the cmake-buildsystem(7) manual for more on defining buildsystem properties. The target_link_libraries() command takes very specific syntax for linking to an external library. See the description of CMP0022, which also uses the term "link interface. PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/libA. mylibrary, the list would include mylibrary, but as a name only and without transitively linked libraries. We use the option CMake: target_link_options () Overview. The target_link_libraries() command should be preferred whenever possible. CMAKE_LINK_LIBRARY_FLAG. This command is passed down to all subdirectories. This property supports overriding multiple libraries and features. Therefore, if I link another CMake target, e. link_libraries(library1 <debug | optimized> library2 ) Specify a list of libraries to be linked into any following targets (typically added with the add_executable or add_library calls). 13: The directories are added to the LINK_DIRECTORIES directory property for the current CMakeLists. I think this has something to do with linux adding "lib***. In the first case, create a FindPower. Select the CUDA runtime library for use when compiling and linking CUDA. WARNING: Target "gadgetron_moco" requests linking to directory "/usr/lib". Repeated calls for the same <target> append items in the order called. This variable defines how to link a library or framework for the specified <FEATURE> when a LINK_LIBRARY generator expression is used. cerna (Cerna) March 17, 2021, 8:43pm 1. This property specifies the list of libraries or targets which will be used for linking. pb ) then CMake will automatically retain that dependency when messages_robocup_ssl_wrapper. The debug The libraries will be included on the link line for the target. Flag to be used to link a library into a shared library or executable. Situations where a library search path may be needed include: Project generators like Xcode where the user can switch target architecture at build time, but a full path to a library cannot be used because it only provides Oct 31, 2021 · 14. This is needed only on very few platforms. CMAKE_LINK_LIBRARY_USING_<FEATURE> The value used for each of these variables is the value as set at the end of the directory scope in which the target was created. Contents of LINK_LIBRARIES may use “generator expressions” with the syntax $<>. CMAKE_LINK_LIBRARY_FILE_FLAG. Using target_link_libraries() command is enough. The usage is as follows: If the language-specific CMAKE_<LANG>_LINK_LIBRARY_USING_<FEATURE>_SUPPORTED variable is true, the feature A library target name: The generated link line will have the full path to the linkable library file associated with the target. Building your application with the help of a Makefile. The remaining arguments specify library names or flags. But information on this is pretty scarce on the web. To make use of the new library we will add an add_subdirectory() call in the top-level CMakeLists. Apr 8, 2016 · target_link_libraries to the rescue! It turns out there’s actually a pretty elegant solution built into CMake, which centers around target_link_libraries. And, by the way, if you are using CMake targets, you don’t have to specify any directory. LINK_LIBRARIES. so) target_include_directories(externalLibA. For more information on the scope, check out this section on target_include_directories in CMake . This command can be used to add any link options, but alternative commands exist to add libraries ( target_link_libraries() or link_libraries() ). 1) build process (before running make), I generate a raft of WARNINGS. I was reading about the cmake keywords PUBLIC, PRIVATE, INTERFACE and came across this paragraph here in the cmake docs. link_directories() コマンドは以下の形式で記述します。 CMAKE_<LANG>_LINK_LIBRARY_FLAG. Like, # Define the executable of the application ! add_executable(main ${SOURCE_FILES}) # 'm' for including math library explicitly. Nov 3, 2016 · target_link_libraries( photobooth Qt5::Qt5Gui ) This is the output from Cmake: Configuring done. Library dependencies are chained A library target name: The generated link line will have the full path to the linkable library file associated with the target. A cache entry, or a normal variable if NO_CACHE is specified, named by <VAR> is created to store the result of this command. Here's how to do this for boost , for example. Instead you want to link your library to some other target. Aug 1, 2010 · To link an executable with a library that resides in a standard location, one can do the following in a CmakeLists. target_link_libraries(MyExecutable curlpp) If you already have a target_link_libraries() line for the MyExecutable target, just add curlpp to the others libraries. Default value for LINK_INTERFACE_LIBRARIES of targets. The buildsystem will have a dependency to re-link <target> if the library file CMAKE_LINK_LIBRARY_FILE_FLAG ¶. set_target_properties(XXX PROPERTIES LINK_LIBRARIES -pthread) Each is built within their own subdirectory as follows: add_library(liba SHARED a. 1,690 2 33 79. Include files in CLion. This signature is for compatibility only. The value of this property is used by the generators Feb 5, 2019 · 4. Aug 15, 2019 · The target property INTERFACE_LINK_LIBRARIES holds this information. answered May 19, 2022 at 14:49. 04 machine. This is what we do: We create a separate CMake target google-test compile it as a library. ¶. 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(). These flags are implicit link options for the compiler's language. This variable is used to initialize the CUDA_RUNTIME_LIBRARY property on all targets as they are created. /Step3cmake --build . The named target must be created by add_library() within the project or as an IMPORTED library . A more modern solution is to create an IMPORTED CMake target for your external library: add_library(MyExternalLib SHARED IMPORTED) # Provide the full path I'm trying to use cmake (on Linux with GNU make and g++) to build a project with two sub-directories: MyLib and MyApp. Jan 18, 2022 · Generally, target_link_libraries does the job, but the CMake build system needs to know about the target you're linking. cpp) target_link_libraries(generate_mesh OpenMeshCore) LINK_LIBRARIES. This flag will be used to specify a library to link to a shared library or an executable for the specific language. Jun 3, 2021 · Furthermore for installed external libraries providing cmake find/configuration scripts (usually) allows you to gain access to IMPORTED library targets that automatically make include dirs and dependencies for the target available to the target linking via target_link_libraries, if set up properly. 13. execute_process(COMMAND llvm-config --libs all. I'm trying to build on Linux with generated makefiles using the following CMakeLists. MyLib contains source for a static library; MyApp needs to link against that library. I’ll cover three different scenarios: Calling GCC directly in the terminal, to build your application and link the shared library. Apr 23, 2024 · To add libraries to your project, use find_package (if you use separate libraries, for example, installed in the system) and target_link_libraries CMake commands. The flag will be used to specify a library to link to an executable. If the library is external, you might want to add the path Dec 30, 2020 · 19. I strongly recommend using this option with boost. Linking ensures that the symbols and code from these dependencies are incorporated into your final executable or library. Use: SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -pthread") OR. This is done based on GLFW documentation - didn't test this. This property is ignored for non-imported targets. Jan 8, 2012 · Specifically - getting cmake to link with an external library is not the problem (there are several solutions above). See the target_link_libraries() command for meaning of arguments. Oct 25, 2021 · The last parameter(s) is a list of libraries to link, where each item is the name of the library given in add_library. Jan 25, 2021 · The good way to do it is to define respective target which will represent library. The value of this property is used by the generators Nov 21, 2017 · After running CMake and installing the library, there is no need to use Find***. In details 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(). cpp) Then, in the root project folder, I need to link my main application to both. On Windows you can use vcpkg to manage c++ libraries. How to use CMake to find and link to the library? You may have the following preferences: write the least possible amount of boiler-plate code; decouple the internal details of the linked library from the consuming target; Ideally, the usage of the library should look like this: add_executable(myexe ) target_link_libraries(myexe mylib::mylib) Nov 27, 2014 · I solved the problem above by drawing respectively identifying all dependencies between the libs and ordering them appropriately (therefore libboost_log. xxx - is the library name. In target_link_libraries, specify either the variable generated by find_packages or library target name (if your library is also built by CMake and has the same parent project, so Jul 12, 2021 · When target_link_libraries is applied to the static library, it won't affect on the resulted library file. In CMake, we use TARGET_LINK_LIBRARIES () to link a shared library to an library/executable. List of direct link dependencies. This is how you add linker flags to a target in modern CMake (3. It should not be used as a substitute for organizing normal calls to target_link_libraries(). This command is used to find a library. The ones that initially put me on the right track were The Ultimate Guide to Modern CMake and CMake – Introduction and best practices. The named <target> must have been created in the current directory by a command such as add_executable () or add_library (). Next, the new library target is linked to the executable target using target_link_libraries(). add_link_options(<option> ) This command can be used to add any link options, but alternative commands exist to add libraries ( target_link_libraries() or Oct 25, 2009 · target_compile_options solution above is wrong, it won't link the library. E. If the library is found the result is stored in the variable and the search will not be repeated unless the variable is cleared. e. Here's a refresher of what that looks like from the command line: mkdir Step3_buildcd Step3_buildcmake . Compilers typically pass language runtime library names and other flags when they invoke a linker. target on Windows. include_directories(a) include_directories(b) add_executable(dummy dummy. dylib) link_directories( dataStructures/build ) link_directories( common/build ) #Bring the headers, into the project include_directories(common/include) include_directories(dataStructures/include) #Can manually add CMake 3. INTERFACE ${CMAKE_SOURCE_DIR}/lib) Jul 4, 2014 · CMake link to external library. Add options to the link step for executable, shared library or module library targets in the current directory and below that are added after this command is invoked. Apr 25, 2018 · PPP. Since static libraries do not link to the libraries on which they depend, it is important for CMake to keep track of the libraries so they can be specified on the link line of the executable being created. txt: Policy CMP0020 is not set: Automatically link Qt executables to qtmain. (Assuming if they are found they will be used) The value of INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE may use generator expressions. How to add OpenXLSX to my project in c++? 1. If you cannot, then using add_subdirectory approach has a little sence - build other project with ExternalProject_Add instead. 13: The <target> doesn't have to be defined in the same directory as the target_link_libraries call. Feb 18, 2016 · The CMake documentation starting with version 3. cpp) This should work if GLFW is properly installed. That way the list of compiled object files from CMAKE_CUDA_RUNTIME_LIBRARY. External projects that have more idiomatic C++ support will support the find_package(<package_name>) command, which populates information about where to find these targets. from the build directory. txt: Jul 16, 2020 · Adding this code to your CMakeList file should fetch all the llvm libraries at configure time. Let's say . 0. The value of this property is used by the generators to set the link libraries for the compiler. A library target name: The generated link line will have the full path to the linkable library file associated with the target. It expects a semicolon-separated list, where each list item has the following form: feature[,link-item]*. 17. Hello, I have a set of C source files and headers. From this I want to compile a shared library for normal linkage and then similar (just some different DEFINEs) MODULE library used to dynamically load the functionality as Mar 27, 2013 · If you are building an executable named MyExecutable, you must have a line like. cmake script file, make sure it's location is part of the CMAKE_MODULE_PATH and write the code for finding the library and header files and constructing the imported target in there. Override the library feature associated with <LIBRARY> from LINK_LIBRARY generator expressions. Mar 17, 2021 · Add only library headers during target_link_libraries () - Code - CMake Discourse. To accomplish this we need to add BUILD_SHARED_LIBS to the top-level CMakeLists. The list should be disjoint from the list of interface libraries in the INTERFACE_LINK_LIBRARIES property. txt file so that the library will get built. a at the end on Linux, and . If neither are specified, the other ways to define output file directory applies (see OUTFILE_DIR option of swig_add_library() command). Also, add_library() specifies you are trying to compile glfw3 by yourself, but what you tried doing is to only link with it. Normal libraries and executables may link to Object Libraries to get their objects and usage requirements. We include googletest folder to our source tree so that our project and Google Test stay together. a # PostgreSQL stuff libpq. Mar 9, 2022 · I’ll explain how you can link a shared library to your application, built with the GCC toolchain. This command specifies the libraries or targets your executable or library needs to link against during the build process. pb. " The named <target> must have been created by a command such as add_executable() or add_library() and must not be an ALIAS target. dylib libcppCommon. CMAKE_LINK_LIBRARY_USING_<FEATURE>_SUPPORTED. Run "cmake --help-policy CMP0020" for policy details. Jun 21, 2023 · Find and Link Libraries with CMake. cpp) target_link_libraries(main libtest-lib) This should already work. When set on a target, this property holds a single library Somehow the answer from @Mike Willekes got CMake linking in the same target both release and debug for me :(. Feb 16, 2015 · 10. txt file: create_executable(generate_mesh generate_mesh. 2. Try adding your lib/glfw/lib directory to your link_directories() just as you do with your include_dicrectories(). target_link_options(my_tgt PRIVATE "LINKER:-as-needed") Note that CMake always passes flags to the configured compiler. a libboost Even better, let CMake take care of dependencies like this. TODO 3: Click to show/hide answer. a libsoci_postgresql. So, the value of the variables in the target_link_libraries here is my CMakeLists. On platforms requiring dependent shared libraries to be found at link time CMake uses this list to add appropriate files or paths to the link command line May 19, 2022 · target_include_directories(mainScr PUBLIC ${GLFW_INCLUDE_DIRS}) add_executable(PackMan scr/main. Implicit link libraries and flags detected for language <LANG>. Link libraries to all targets added later. Each <item> may be: A library target name: The generated link line will have the full path to the linkable library file associated with the target. target_link_libraries(main m) answered Apr 8 at 4:54. 13+): # my_tgt can be an executable, library, or module. 4 on the FindOpenSSL page says: . Feb 19, 2015 · The find_library() command provides the full path, which can generally be used directly in calls to target_link_libraries(). a libA. Make a new directory called Step3_build, run the cmake executable or the cmake-gui to configure the project and then build it with your chosen build tool or by using cmake--build. g. a libsoci_core. Library dependencies are chained CMAKE_LINK_INTERFACE_LIBRARIES. cmake files, it can be used like this: find_package(MyLib REQUIRED) #No need to perform include_directories() target_link_libraries(${TARGET} mylib) That's it, if it has been installed in a standard directory it will be found and there is no need to do anything else. This can be used to resolve incompatible library features that result from specifying different features for <LIBRARY> in different LINK_LIBRARY generator expressions. In that specific case, the above solutions do not work because XCode will not 'see' the libraries linked in that The command will apply only to targets created after it is called. add_library(externalLibA SHARED IMPORTED) set_target_properties(externalLibA. cpp) target_link_libraries(dummy a b) CMake runs fine with this, and my application compiles but fails to link. If policy CMP0022 is not NEW, then this mode also appends libraries to the :prop_tgt: LINK_INTERFACE_LIBRARIES and its per-configuration equivalent. This property contains the list of transitive link dependencies. c with -DA -DOBJ and establishes usage requirements for obj that propagate to its dependents. Specify an output directory where the generated source file will be placed (swig -o option) for the considered source file. anything that is used in a target_link_libraries(${TARGET} ) call). edited Jan 2, 2021 at 23:07. Jan 22, 2013 · I think it's CMake's default behavior to not link project2 to the external library, but to link both libraries to the executable. add_executable(MyExecutable ) in your CMakeLists. From the book "Mastering CMake". The buildsystem will have a dependency to re-link <target> if the library file The LINK_INTERFACE_LIBRARIES mode appends the libraries to the :prop_tgt: INTERFACE_LINK_LIBRARIES target property instead of using them for linking. But it affects on the target in the similar way, as it would affect on the target of the shared library. 5. This can be used to resolve incompatible library features that result from specifying different features for the same library in different LINK_LIBRARY generator expressions. pb is specified as a dependency of another target. See the cmake-generator-expressions(7) manual for available expressions. txt file, converting relative paths to absolute as needed. so # Boost libboost_program_options. 1. txt. CMake is dropping the item. The allowed case insensitive values are: Link with -cudart=none or equivalent flag (s) to use no CUDA runtime library. TODO 1: Click to show/hide answer. Contents of add_library creates a new library. CMake link_directories() コマンド. 24. I am compiling an enormous code (100,000+ lines) on an Ubuntu 16. a" [pre/post]fix to the lib filename. 3. You have to also add its sources to be compiled. As of my understanding CMake searches for "libxxx. This variable is used to initialize the LINK_INTERFACE_LIBRARIES property on all the targets. For each language enabled by the project() or enable_language() command, CMake automatically detects these libraries Set this property to the list of dependent shared libraries of an imported library. May 19, 2020 · It turns out, the problem is in my own python interpreter library which hasn’t been linked with pthread libs, dl libs, and utility libs correctly. In today’s Part 2, I’ll show you how to find libraries and link them to your application. In addition to accepting values from the target_link_libraries() command, values may be set directly on any target using the set_property() command. Android Studio: CMake is not finding Boost header files. In CMake, the target_link_options() command is employed to specify linker options for executable, shared library, or module library targets. For example: TARGET_LINK_LIBRARIES(ExecutableName xxx) where ExecutableName - is the name of executable. CMake Warning (dev) in CMakeLists. Apr 20, 2017 · In fact, CMake itself even discourages the use of link_directories() in its documentation. Dec 9, 2019 · 1. Just ensure that CMP0099 policy is set to NEW. These options are passed to the linker during the linking stage of the build process, influencing how the target is linked with other libraries and object files. add_executable(main main. I only got this working by setting both configurations in one line, as suggested by @sakra in a related question - and doing so for every library that needed to be linked: Oct 29, 2019 · You can either construct such an imported target manually in the find script, or have CMake do it for you. Flag to be used to link a library specified by a path to its file. 24 adds an official way to do this using the LINK_LIBRARY:WHOLE_ARCHIVE generator expression: add_library(lib1 STATIC ) add_library(lib2 ) target_link_libraries(lib2 PRIVATE "$<LINK_LIBRARY:WHOLE_ARCHIVE,lib1>") That being said, using object libraries is usually an easier solution. See that target property for additional information. On most compilers this is -l. messages_robocup_ssl_geometry. txt Finally, target_link_libraries tells CMake that the helloworld executable makes use of Qt Core by referencing the Qt6::Core target imported by the find_package() call above. If not specified, OUTPUT_DIR source property will be used. In Part 1 of our series on CMake, an open-source, cross-platform family of tools designed to build, test and package software, I provided an overview and showed you how to build a basic CMake project. Thus, to forward your intended link flags to the linker, you must use the LINKER: prefix. When the target is linked into another target using the target_link_libraries() command, the libraries listed (and recursively their link interface libraries) will be provided to the other target also. OUTPUT_VARIABLE llvm_libraries) If you intend to fetch libraries of specific components, just replace all with the component names. Library dependencies are chained Use the target_link_libraries () command instead. Link not with the IMPORTED library with given location, but with the library target, created in another project. List public interface libraries for a library. It is not enough to just include_directories with googletest. 2 days ago · add_library(final_lib SHARED libC) Any final target, like executable or shared library, linking with libC will also link against libB and libA. 2) project(cpp) #For the shared library: set ( PROJECT_LINK_LIBS libcppDS. a has been added): TARGET_LINK_LIBRARIES ($ {ApplicationName} libB. You need to found this target in the other project's CMakeLists. New in version 3. lib at the end on Windows. Sep 18, 2015 · cmake_minimum_required(VERSION 3. This will not only add the right arguments to the linker, but also makes sure that the right include directories, compiler definitions are passed to the C++ compi target_compile_definitions(obj PUBLIC OBJ) target_link_libraries(obj PUBLIC A) compiles obj. Jun 24, 2017 · 7. cpp) CMake automatically adds the lib to the front and the . Unlike the LINK_INTERFACE_LIBRARIES property, this property applies to all imported target types, including STATIC libraries. . In the process of doing so, during the cmake (v3. edited May 16 Sep 24, 2015 · However, get_target_property(_LINK_LIBRARIES ${TARGET} LINK_LIBRARIES only includes the direct dependencies (i. Both of the following conditions must be met for this variable to have any effect: The associated CMAKE_LINK_LIBRARY_USING_<FEATURE>_SUPPORTED variable must be set to true. This property is ignored if the target also has a non-empty INTERFACE_LINK_LIBRARIES property. Probably the term "link interface" came from the old CMake wording used around LINK_INTERFACE_LIBRARIES properties, which is deprecated in favor of INTERFACE_LINK_LIBRARIES. Note. Continuing the above example, the code. You need to link math library explicitly to your executable. Set OPENSSL_USE_STATIC_LIBS to TRUE to look for static libraries. Apr 1, 2015 · target_link_libraries(<targetname> ${YOUR_CMAKE_VARIABLE}) The same variable can also be used to create your copy commands (for example using this custom target ) (*) A similar question was asked here , and it got no definitive answer. INTERFACE_LINK_LIBRARIES. The better cross-platform way would be using find_package, which locates a package/library, and provides the libraries and includes in CMake variables so that you could link your program to them. Targets may link only to libraries. The flag will be used before a library file path is given to the linker. Flag to be used to link a library into an executable. so" at the paths mentioned in LINK_DIRECTORIES () macro. Specify libraries or flags to use when linking a given target. The INTERFACE_LINK_LIBRARIES_DIRECT_EXCLUDE target property is intended for advanced use cases such as injection of static plugins into a consuming executable. 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. If you add target_link_libraries( messages_robocup_ssl_wrapper. 16. The buildsystem will have a dependency to re-link <target> if the library file changes. AFTER this line, try to add. af zu gr nd pu rl zm nw uz tr