cmake target_link_libraries

man pages section 7: Standards, Environments, Macros, Character Sets, and Miscellany When given a static library target_link_libraries will use it. The buildsystem will have a dependency to re-link <target> if the library file changes. target_link_libraries() means in Modern CMake two things: use library (get its properties) at compilation stage and link with it at linking stage. So, I have a code where we want to link in a library only if an option() is true. We will create a basic Raspberry Pi project using the sqlite3 library and will then show different ways of using target_link_libraries() to reference the necessary libraries.. Hi all, I'm new to CMake and have tried to jump in feet first and find that I'm slightly drowning. This is a good idea, even if you know the path to your . TARGET_LINK_LIBRARIES(GLBall mylib) I assume you want to link to a library called foo, its filename is usually something link foo.dll or libfoo.so. CMake target-declaration-compliant solution. TARGET_LINK_LIBRARIES(${library_target} PRIVATE Qt5::Core) . replies . When using CMake 3.12 or earlier, working around the restriction with target_link_libraries() is harder. Path of least resistance is to use the same default libraries as your target system. It seems a bit silly to define linker-dependencies for libraries, since a (static) library is not linked at all. 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++ compiler. This is what I'm trying to deal with. Adding these libraries seems to fail, since th. cmake. OBJECT library can't be used on the right hand side of target_link_libraries command. The target_include_directories command set up the include directories of yart.Public api is located in $<CMAKE_SOURCE_DIR>/include/, as well as the generated common.h file, and the private header file is in the same directory as $<CMAKE_CURRENT_SOURCE_DIR>.Notice that $<INSTALL_INTERFACE:include> is needed for users to find yart headers after installing yart onto their system. An executable is a target, a library is a target. The last parameter(s) is a list of libraries to link, where each item is the name of the library given in add_library. If no target of that name ( one ) exists, then it adds a link to a library called one on your path (hence the name of the command). GitHub Gist: instantly share code, notes, and snippets. give it a try and let me know if it works for u. Generally I am able to edit and build my project. target_link_libraries(mainexec ${LIBNAME}) add_dependencies(mainexec combinedLib) In my case it is not entirely satisfactory because mainexec has to know about combinedLib although it expects all dependencies to be . . started 2007-07-12 20:00:08 UTC. Note The target_link_libraries () command should be preferred whenever possible. # Define your library and its usage requirements: add_library (MyLib .) 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++ compiler. Search results for '[CMake] TARGET_LINK_LIBRARIES with full path libraries' (Questions and Answers) 3 . additional_make_clean_files binary_dir buildsystem_targets cache_variables clean_no_custom cmake_configure_depends compile_definitions compile_definitions_config compile_options definitions exclude_from_all implicit_depends_include_transform include_directories include_regular_expression interprocedural_optimization interprocedural_optimization_config labels link_directories link_options . 02 Jun 2017. The value of this property is used by the generators to construct the link rule for the target. cmake target_link_libraries PRIVATE or PUBLIC on CuteLogger. asked 2011-07-09 04:29:06 -0500. . To answer your question: If you successfully compile and link your library on Linux, the full paths to your external libraries will be stored. If you now copy or install (using CMake) your library, the full libraries paths will be stripped. cmake build target using 32 and 64 bit libraries. Modern CMake is all about targets and properties. I am writing a simple cinder project on clion on Manjaro Linux using cmake. Permalink. The named target must be created by :command:`add_library` within the project or as an :ref:`IMPORTED library <Imported Targets>`. One is OpenCV and the other is a driver library for an infrared camera. andy fillebrown. The CMake keywords PUBLIC, PRIVATE, and INTERFACE used in target_include_directories and target_link_libraries, in my opinion, are mixtures of access specifier and inheritance type from C++. Yet another post in "Matt tries to learn Effective CMake". Get started with CMake. qserialdeviced is at /usr/lib/libqserialdeviced.so.1..0, correctly simlinked to /usr/lib/libqserialdeviced.so and easily found if I manually add it in the Makefile. --target SomeLibrary Scanning dependencies of target SomeLibrary [ 50%] Building CXX object libraries/SomeLibrary . In previous versions of CMake, building CUDA code required commands such as cuda_add_library. There are several code-bases that I want to compile together in a CMake project. Build files cannot be regenerated correctly. 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. This property specifies the list of libraries or targets which will be used for linking. Then, you can use these libraries and header files with the target_link_libraries command to build Qt-based libraries and applications. The most common use of CMake is to build projects that are written in C, C++ or . Example 2: defining header-only libraries One way how to solve this is to create an INTERFACE library with only the PUBLIC headers and target_link_libraries () this to both the shared library and the MODULE library. A library target name: The generated link line will have the full path to the linkable library file associated with the target. The named target must be created by :command:`add_library` within the project or as an :ref:`IMPORTED library <Imported Targets>`. # Link the nanomsg library to the executable target. To link the prebuilt library to your own native library, add it to the target_link_libraries() command in your CMake build script: target_link_libraries( native-lib imported-lib app-glue ${log-lib} ) To package the prebuilt library into your APK, you need to manually configure Gradle with the sourceSets block to include the path to your .so file CMake provides solutions to all those problems, but they all depend on defining a proper dependency tree for all libraries and executables with target_link_libraries(), so that's the first thing to get right. target_link_libraries 呼び出しで $<TARGET_OBJECTS> 参照すると、3.21より前のバージョンのCMakeで機能する場合がありましたが、完全にはサポートされていませんでした。 walkthrough for half-life decay? That clearly shows that target_link_libraries is not linking my qserialdeviced. Change the lines with these, and make sure they are in the same order as shown. target_link_libraries Overview Libraries for a Target and/or its Dependents Libraries for both a Target and its Dependents Libraries for a Target and/or its Dependents (Legacy) Libraries for Dependents Only (Legacy) Linking Object Libraries Linking Object Libraries via $<TARGET_OBJECTS> Cyclic Dependencies of Static Libraries Finally, target_link_libraries tells CMake that the helloworld executable makes use of Qt Widgets by referencing the Qt6::Widgets target imported by the find_package() call above. . However, if you need to support older CMake, the following works on CMake 3.1+: I obviously tried: target_link_libraries(-lqserialdeviced) with no change. target_link_libraries(main ${CMAKE_SOURCE_DIR}/libbingitup.a) If you don't want to include the full path, you can do add_executable(main main.cpp) target_link_libraries(main bingitup) bingitupis the same name you'd give a target if you create the static library in a CMake project: add_library(bingitup STATIC bingitup.cpp) Execute cmake--help for further help options.. CMake allows you to specify a build tool (e.g., GNU make, Visual Studio, or Xcode). The gist is this: Using target_link_libraries to link A to an internal target B will not only add the linker flags required to link to B, but also the definitions, include paths and other settings - even transitively - if they are configured that way. Information such as include directories, compiler defines, and compiler options can be associated with targets so that this information propagates to consumers automatically through target_link_libraries. Since CMake generates 32bit ARM cross-compiling Makefile, i need to to do a maunal fix: 2. cmake in usr/local/cmake. with the dll. with a add_library command) - all dependencies stored in a single file at the root level. Start with find_package to locate the libraries and header files shipped with Qt. To make it CMake compliant, you can replace the `target_link_libraries' call by. cmake_minimum_required (VERSION 3.0) project (example) add_subdirectory (pybind11) find_package ( Threads REQUIRED ) #find_package ( OpenCV REQUIRED ) include_directories ( $ {OpenCV_INCLUDE_DIRS}) set (CMAKE_CXX_STANDARD 11 . Set libraries search path first: LINK_DIRECTORIES(${CMAKE_BINARY_DIR}/res) And then just do. Compatible build tools include Make, Ninja, and others - see CMake Generators for more information. Note: make sure to place target_link_libraries after the add_executable command, so that CMake actually builds the target before linking the library. In this tutorial we will use Visual Studio and VisualGDB, however the steps described below . In some cases, there's a CMake build, but it can be outdated or written in older CMake which makes build targets essentially useless (e.g. video & online games. Conceptually this isn't complicated. Unfortunately, these commands are unable to . This command automatically adds the appropriate include directories, compile definitions, the position . Example: Activates the call to the macro conan_target_link_libraries() . As has already been noted, the specification of target_link_libraries is. 17 . You link with that and when the application starts it. The buildsystem will have a dependency to re-link <target> if the library file changes. really has nothing to do with target_link_libraries at all. NO_OUTPUT_DIRS (Optional): Do not adjust the build output directories. Let's look at Boost for an example. CMake Inheritance. # Create an extension module add_library(mylib MODULE main.cpp) target_link_libraries(mylib PUBLIC pybind11:: module) # Or embed the Python interpreter into an executable add_executable(myexe main.cpp) target_link_libraries(myexe PUBLIC pybind11:: embed) The company only provides a 32-bit version of the library via an rpm package. searches the path for each dll it needs. You can make use of them in . Ask Question Asked today. Aside from just going to the library folder and running CMake from there, you can actually do it from the project root - by setting --target option on build: $ rm -r ./* && cmake -DCMAKE_BUILD_TYPE=Debug .. $ cmake --build . If you really wanted this now, you could implement it in cmake code for your project using find_file and only looking for .a libraries if UNIX is on. TARGET _ LINK _ LIBRARIES （设置要链接的库文件的名称） 语法： TARGET _ LINK _ LIBRARIES ( targetlibrary 1 <debug | optimized> library 2 ..) 比如（以下写法（包括备注中的）都可以）： TARGET _ LINK _ LIBRARIES (myProject hello)，连接libhello.so库 TARGET _ LINK _ LIBRARIES (myProject libhello.a) TARGET _ LINK _ LIBRAR IE. add_executable(appA appA.cpp) target_link_libraries(appA foo) add_executable(appB appB.cpp) Ubuntu, Debian, Mint. CMake is an excellent cross-platform build tool for automatically generating Unix Makefiles, Windows NMake Makefiles, Microsoft Visual Studio® Solution projects or Apple Xcode® projects for MacOS.It has its own domain specific language and various modules for most commonly used libraries and software frameworks. Hi all, I'm new to CMake and have tried to jump in feet first and find that I'm slightly drowning. While CMake enjoys increasing interest, there are still plenty of libraries using native build systems like Unix Makefiles. This section explains basic aspects of CMake which you may need in your day-to-day usage. CMake is a cross-platform build-generator tool. 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 (). Dynamic libraries (Boost example) To illustrate linking dynamic libraries, we will take an example of using Boost.Test framework. The solution is: SET (LINK_LIBRARY optimized Foo debug Foo_d) target_link_libraries (MyEXE $ {LINK_LIBRARY}) There is no problems when your library is a part of the project or you're importing it using config mode of find_package command (see documentation and example). INTERFACE libraries. SDL2 is the newest version of the Simple Directmedia Layer API. Example cmake for windows including auto copy dll. This command was deprecated in CMake version 3.0, and was added back in version 3.2. CMake will make sure to first build test before linking it to myapp. I have library dependencies in the CMake of a block that I am using, but none in the CMakeLists of my application. There are several code-bases that I want to compile together in a CMake project. In target_link_libraries we tell CMake to link it to our executable. started 2006-12-05 09:15:14 UTC. TARGET_LINK_LIBRARIES(${library_target} Qt5::Core) What would change if, instead, it was the following? TARGETS (Optional): Setup all the CMake variables by target (only CMake > 3.1.2). The find_package command finds the PNG library, target_link_libraries adds the library to the list of libraries the executable needs, and include_directories adds the directory where the .h file is when compiling. In case you can't modify 3rd party . CMake uses somewhat similar inheritance concepts to C++, especially for the C++ public and private access specifiers and inheritance types. Of course, it's all in the CMake documentation, but mentioned implicitly at best. CMake will choose the right one for you. It can be used together with CMake to build a cross platform multimedia application. The special INTERFACE library lets you declare a header-only library as a proper CMake target, and then use it like any other library. When you create a .dll there is also a small import lib associated. But CMake document recommends using target_link_libraries to replace this command whenever possible. target_link_libraries里库文件的顺序符合gcc链接顺序的规则，即被依赖的库放在依赖它的库的后面，比如 target_link_libraries(hello A B.a C.so) 在上面的命令中，libA.so可能依赖于libB.a和libC.so，如果顺序有错，链接时会报错。还有一点，B.a会告诉CMake优先使用静态链接库libB.a，C.so会告诉CMake优先使用 This time, it's generator expressions! I compiled OpenCV from source and it's libraries are installed in /usr/local/lib64. target_include_directories (MyLib PUBLIC pub/inc1) # These will be used both by the library and by whoever links to it target_include_directories (MyLib PRIVATE src) # These will be used only when building the library, not by its clients target_link_libraries for lpthread, ldl, and lutils. Link the consumer to the dependency. CMake target_link_libraries() ld: undefined reference or ld: cannot find -l. So it turns out . CMake 命令 target _ link _ libraries 链接库的顺序 zhujianwei31415的专栏 5万+ CMake and a compatible build tool for building the project. if i edit vcpkg\installed\x64-windows\share\tensorflow\tensorflow-config.cmake and remove In practice, very few projects are fully self-contained, as they either depend on external libraries or are themselves libraries that other projects depend on. It takes a target ( another ) and adds a dependency if a target is given. You do not link against a .dll in windows ever. John. This is what I'm trying to deal with. Basic CMake usage ¶. Any additional module which will depend on this module will just target_link_libraries () the INTERFACE library. However maybe someone sees, what could be wrong and how to fix it. Hello, I am using the nrf9160 and I am developing using zephyr. This tutorial shows various ways to use CMake's target_link_libraries() statement and explains the differences between them. So I have (simplified): target_link_li… In CMake 3.12+, this will even support OpenMP on macOS (if the library is available, such as with brew install libomp). The choices are either to move the target_link_libraries() call up to the same directory in which the target is defined, or avoid creating new directory scopes by using include() instead of add_subdirectory(). CMake helpers ¶ Pybind11 can be . For more information on the scope, check out this section on target_include_directories in CMake . 1> [CMake] CMake Generate step failed. I would like to work with the pre-built version of the opencv libraries in qt creator with either cmake or qmake in windows. My previous post about CMake provided a simple CMakeLists.txt for a small, self-contained, project. instead of target_include_libraries which carry transitive include directory dependencies, the library can use include_directories which will force you to manually specify include directories and other . target_link_libraries is probably the most useful and confusing command in CMake. # link the libraries to the executable target_link_libraries (my_node foo) (/usr/local/lib is probably in your environment path already, so the first line might be unnecessary) edit flag offensive delete link more Comments. Cmake version is 2.8.12 (I edited every CMakelists.txt I could find to upgrade the version from 2.8.3 - apparently that's when they introduced target_link_libaries () ) Here's my CMakelists.txt: cmake_minimum_required(VERSION 2.8.12) project(arm_control) find_package(catkin REQUIRED COMPONENTS roscpp moveit . Hello, i am new at using cmake for compiling and building c++ code. replies . The link . I would think to use the find_library() function to store the path for a library and then add the variable to target_function_library() to link it. . A library target name: The generated link line will have the full path to the linkable library file associated with the target. rosbuild_add_executable ($ {BINNAME} $ {SRCS}) target_link_libraries ($ {BINNAME} /pathto/libue9.so) replace pathto with the full path to your libue9.so library file. In this blog post I will describe the necessary steps to use SDL2 with CMake on both Linux (Ubuntu 17.04) and Windows. See the target_link_libraries () command for meaning of arguments. And CMake supports them too. Hi, all: It looks I cannot build these 3 modules under opencv_contrib: hdf freetype text System information (version) OpenCV => 3.2 Operating System / Platform => Ubuntu 16.04 Compiler => . And the way I learned this is by typing target_link_libraries(<target> <lib> PUBLIC <lib2>) I don't understand how you can deduce anything from an invalid CMake syntax. See Supported Platforms for more information about platforms compatible with GoogleTest. Using header-only libraries in CMake is a breeze. As part of the University's strategic budget reduction process, the USF Libraries - Tampa campus is tasked with reducing recurring spending by $2,033,500, or 15.3 percent of the E&G base budget. Have CMake installed, see the CMake installation guide is the newest version of the library via rpm... Generally I am compiling some source that is linked to two packages inheritance types given a library... Will not be able to make it CMake compliant, you can & x27! Start with find_package to locate the libraries and header files shipped with Qt self-contained, project others - CMake... Target_Link_Libraries & # x27 ; s libraries are installed in /usr/local/lib64 compatible build tools include make,,... Segger IDE library lets you declare a header-only library as a proper CMake target, and as online help via! Macro conan_target_link_libraries ( ) command should be preferred whenever possible should be preferred whenever possible CMake make. To cmake target_link_libraries executable and then use it is a driver library for infrared. If it works for u > Page link Copied mylib4 ) target_link_libraries ( $ { library_target Qt5. The INTERFACE library... < /a > in target_link_libraries we tell CMake to build projects are. Necessary steps to use SDL2 with CMake the next part is How to fix it interest, are. A simple CMakeLists.txt for a small import lib associated I will describe the necessary steps to the... Code-Bases that I am able to edit and build my project: //www.reddit.com/r/cmake/comments/o3glyz/cmake_target_link_libraries_ld_undefined/ '' > using with. Is the newest version of the library file changes CMake on both Linux Ubuntu. Backward compatibility link Copied form of html files, and as online help accessible via CMake! Build systems like Unix Makefiles it was the following instead, it & # x27 ; complicated! Be stripped import lib associated document recommends using target_link_libraries to replace this command adds... Really has nothing to do with regular add_library command the build output directories meaning of.... That are written in C, C++ or target is given you can & # x27 s. Scope, check out this section on target_include_directories in CMake version 3.0, others. In Segger IDE and applications, however the steps described below if someone could help me: updated! And private access specifiers and inheritance types and applications CMake - Trenki & x27! < a href= '' https: //mirkokiefer.com/cmake-by-example-f95eb47d45b1 '' > using SDL2 with?! Default libraries as your target system Qt5::Core ) will be stripped [... A static library target_link_libraries will use Visual Studio and VisualGDB, however the steps described below library via rpm... You don & # x27 cmake target_link_libraries t modify 3rd party s Dev <. So, I am able to make it CMake compliant, you can replace `... An executable is a good idea, even if you now copy or install ( using CMake compiling! Practice it means that you will not be able to make it CMake compliant, you can use libraries... Bit silly to define linker-dependencies for libraries, we will take an example of using Boost.Test framework a try let! Qt-Based libraries and header files shipped with Qt for a small,,... Directmedia Layer API on both Linux ( Ubuntu 17.04 ) and Windows library via an rpm package OpenCV correctly..., you can replace the ` target_link_libraries & # x27 ; m trying to deal with to change find_library find! /Opencv/Cmake/Opencvutils.Cmake:896... < /a > in target_link_libraries we tell CMake to build Qt-based libraries applications... Header files with the target_link_libraries ( mylib2 mylib2 mylib5 ) target_link_libraries ( ) ld: undefined reference...! Using SDL2 with CMake 3.0, and as online help accessible via the CMake executable itself CMake target and. Library you have to find only static libraries nothing to do with regular add_library.! Could be wrong and How to add external libraries in CMake of this property is used by the generators construct! Without much success seems a bit better name for it would be extremely happy, if someone could me... To understand 2 times 0 let & # x27 ; s libraries are installed in /usr/local/lib64 fix.... Infrared camera have library dependencies in the CMakeLists of my application make a hierarchy of targets as you with... Cmake tutorial - CLion help < /a > in target_link_libraries we tell CMake to link a! Information about Platforms compatible with GoogleTest tried: target_link_libraries ( ) ld: undefined or! Libraries correctly, notes, and then use it for a small, self-contained project. Use of CMake, building CUDA code required commands such as cuda_add_library, Ninja and! Undefined reference or... < /a > really has nothing to do with add_library... The special INTERFACE library.dll there is also a small, self-contained, project good idea even! - see CMake generators for more information on the scope, check out section. Using native build systems like Unix Makefiles CMake inheritance nrf connect project in Segger IDE this property is by! ( static ) library is not linked at all, a library that built with CMake both! ; target & gt ; if the library via an rpm package define linker-dependencies for,! Obviously tried: target_link_libraries ( -lqserialdeviced ) with no change for more information on the,! Library is a target an option ( ) but it would be happy! Which will depend on this module will just target_link_libraries ( ) command should be preferred whenever.! Help me: I updated and use the same default libraries as your target system C++ code ) is. Ninja, and snippets more information SomeLibrary Scanning dependencies of target SomeLibrary [ 50 % ] building CXX libraries/SomeLibrary. Backward compatibility CUDA code required commands such as cuda_add_library at Boost for an infrared camera using CMake ) your,. Target_Use_Libraries ( ) but it would break the backward compatibility able to make a hierarchy of targets you!:Core ) that is linked to two packages really has nothing to do target_link_libraries! Building C++ code CMake Error at...... /opencv/cmake/OpenCVUtils.cmake:896... < /a > Page Copied! Viewed 2 times 0 let & # x27 ; s generator expressions 32-bit version of the simple Directmedia Layer.... For me to understand know if it works for u: do not adjust the output! Cmake inheritance compatible build tools include make, Ninja, and then use like! My application target & gt ; if the library you have to find library. Of libraries using native build systems like Unix Makefiles # x27 ; t already have installed. Make sure to first build test before linking it to our executable library dependencies the. As a proper CMake target, a library that built with CMake - Trenki & # x27 t. A cross platform multimedia application https: //answers.opencv.org/question/189548/how-can-i-link-the-opencv-libraries-correctly/ '' > CMake target_link_libraries ( mylib4! Ld: undefined reference or... < /a > really has nothing do... Mylib4 ) target_link_libraries ( ) it like any other library s consider CuteLogger CMakeLists.txt where we want to against. And then use it ( Boost example ) to illustrate linking dynamic libraries ( Boost example ) illustrate! Module which will depend on this module will just target_link_libraries ( ) ld: undefined or. Clion help < /a > Get started with CMake - Trenki & # x27 ; s Dev <. Preferred whenever possible option ( ) but it would be target_use_libraries ( is! //Github.Com/Opencv/Opencv_Contrib/Issues/983 '' > CMake target_link_libraries ( ) ld: undefined reference or... < /a > inheritance... Basic aspects of CMake is to build Qt-based libraries and header files with the target_link_libraries ( -lqserialdeviced ) with change... Define linker-dependencies for libraries, we will use it like any other....:Core ) module which will depend on this module will just target_link_libraries (.. ( $ { library_target } private Qt5::Core ) what would if... Target_Use_Libraries ( ) is true ) your library, the full libraries paths will be stripped mylib2! Cmake target_link_libraries ( $ { library_target } private Qt5::Core ) fail since! To construct the link rule for the target official CMake documentation is hard for me to.... It takes a target ( another cmake target_link_libraries and Windows ; call by, C++ or of using Boost.Test.. To /usr/lib/libqserialdeviced.so and easily found if I manually add it in the CMakeLists of my application { library_target } Qt5... Be wrong and How to change find_library to find only static libraries automatically... Target & gt ; if the library file changes code where we see library an. Via the CMake of a block that I am new at using CMake ) your library the... Someone could help me: I updated and use the same default libraries as your target system use the versions! Target_Link_Libraries we tell CMake to build a cross platform multimedia application to our executable be target_use_libraries ( ) but would. Build output directories source that is linked to two packages conan_target_link_libraries ( ) is true library is a target given! Target_Link_Libraries we tell CMake to link it to myapp html files, and -. Target_Include_Directories in CMake: undefined reference or... < /a > Get started with CMake on Linux... Target_Use_Libraries ( ) the INTERFACE library lets you declare a header-only library as proper... Library in CMake rule for the C++ public and private access specifiers and types. File changes call to the macro conan_target_link_libraries ( ) ld: undefined reference or... < /a > Page Copied... It means that you will not be able to make it CMake compliant, you can replace the target_link_libraries. & # x27 ; t the end 0, correctly simlinked to /usr/lib/libqserialdeviced.so and easily found if I manually it! A proper CMake target, and was added back in version 3.2 linked at all code where see. Seems a bit silly to define linker-dependencies for libraries, since th and applications include make, Ninja, as. Provided a simple CMakeLists.txt for a small, self-contained, project nrf connect project in Segger IDE target_use_libraries )...

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