Cmake add executable with library

Cmake add executable with library. The only thing is that you need to use add_custom_command to produce object files, so CMake would know where to get them. One or more files corresponding Dec 14, 2015 · I would like to build an executable from static libraries (i. txt that automatically finds all sources files in the src directory and also adds all directories as include directories that have a header file in them. Because you call add_executable() from the top directory, CMake searches test. May 21, 2022 · Interestingly, these lines just tell CMake what version it supports, what to look for in a compiler, and the C++ standard to use. Jul 9, 2014 at 9:46. # In this example, it is resman. Therefore, any target_link_libraries() call should be placed after the add_executable() call in your code. # Optionally you can use file glob (uncomment the next line) # file( GLOB Making a library. This is often not the case. An object library compiles source files but does not archive or link their object files into a library. – Mar 2, 2010 · add_executable. Build a library from the . txt. The --target option with install parameter in addition to the --build option tells cmake to build the install target. In addition, the executable is created from compiling the files Aug 3, 2012 · Since CMake 3. If neither are specified, the other ways to define output file directory applies (see OUTFILE_DIR option of swig_add_library() command). I have defined my executable as: add_executable( myexec EXCLUDE_FROM_ALL ${PROJECT_SOURCE_DIR}/main. 11: An ALIAS can target a GLOBAL Imported Target. The linker will not use it to determine the location of the location of libraries to link. c as source files. Jul 7, 2014 · Don't assume that the directory containing CMakeLists. The good way to do it is to define respective target which will represent library. If you leave this choice off, the value of BUILD_SHARED_LIBS will be used to pick between STATIC and SHARED. From the docs for target_link_libraries: 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). c and foo2. (The source files can be omitted here if they are added later using target Jul 12, 2021 · When linking with libtestlib. add_library() 函数是 CMake 中用于创建库目标的重要命令。了解如何 Apr 18, 2019 · While add_executable (and add_library) is provided by CMake itself, you may define a function or a macro with the same name, which would "hide" the original CMake function. Fix for this issue is, name of the file on filesystem and the cmakelists. or make CMakeLists. cxx file that computes the square root of a number but it's not clear to me where that file is. lib) or a SHARED library ( . Something like the following: In the subdir CMakeLists. Jul 8, 2010 · With this option there is no needs to manually re-run CMake after addition/deletion of a source file in the directory - CMake will be re-run automatically on next building the project. cpp) target_link_libraries (my_program pthread m my_other_library) In this Mar 19, 2020 · I am trying to first create a static library and then link it to an executable using CMake. lib at the end on Windows. That populates INTERFACE_INCLUDE_DIRECTORIES of the library target, which is used by target_link_libraries on the consuming side. set( component_SOURCES ) # Add the source-files for the component here. In this case, we want to install both debug and release. find_package (SDL) defines. o object files. You can probably configure CMake output directory to be the same for all libs and exe's, which should help with debugging. Aug 1, 2017 · Figure 2. 10 and have a problem linking a compiled library to a test executable in CMake. cc file in the current directory. First, you use include_directories() to tell CMake to add the directory as -I to the compilation command line. Build a library. 5. txt in each subdirectory - that would be better for project larger than very small. Making a library is done with add_library, and is just about as simple: add_library (one STATIC two. Use absolute paths for target_sources calls: Dec 22, 2020 · The line add_library(lib_third_party_ti_mmcsdlib "") isn't wrong by itself: While it creates a library target without adding source file to it, it is possible to add sources afterwards. lib libfoobar. INTERFACE ${CMAKE_SOURCE_DIR}/lib) Jan 21, 2010 · Normally the generated build system knows when it needs to rerun CMake because the CMakeLists. In this example that's just main. For external dependencies use find_package It defines a set of variables, like. In this case, if you list jsoncpp sources in both add_executable() calls, you'd have to compile it twice. cmake. qt_add_executable() tells CMake that we want to build an executable (so not a library) called helloworld as a target. Options common to multiple signatures are covered here but they are valid only for signatures that specify Feb 25, 2021 · Using the add_dependencies () does allow the separation between the executable and the libraries, so that is good, however the executable still contains the libraries. Header files, which often have . The actual file name of the executable built is constructed based on conventions of the native platform (such as <name>. Grouping them into add_library() will make it compile only once and then linked to both executables. add_library is for creating a library, either static or dynamic, e. exe or just <name>. 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. Sep 3, 2018 · If you're using CMAKE to generate a Visual Studio solution, and you want Visual Studio to output compiled files into /bin, Peter's answer needs to be modified a bit: string( TOUPPER ${OUTPUTCONFIG} OUTPUTCONFIG ) set( CMAKE_ARCHIVE_OUTPUT_DIRECTORY_${OUTPUTCONFIG} ${CMAKE_SOURCE_DIR}/lib ) Concrete executable and library targets created by add_executable() and add_library() are global, so each one must be unique across the whole build. – pmr. h files, using add_library; Iterate through all your . You only need one call to target_link_libraries() to link all of your *. The ExternalData_Add_Test function is a wrapper around CMake’s add_test command. 13 there is the add_link_options command. cxx files and create an executable from each, using add_executable and foreach; Build the library. Jan 6, 2022 · The rpath is information that's only used at runtime to find the lib. Jan 18, 2019 · You can list object files along sources in add_executable() and addlibrary(): source. – Step1 shows code for the CMakeLists. , libpthread for the POSIX thread library. 7 with the same results. Feb 16, 2015 · 10. target_link_options(my_tgt PRIVATE "LINKER:-as-needed") Note that CMake always passes flags to the configured compiler. set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}) to your Project/CMakeLists. target_include_directories( app PRIVATE ${CMAKE_SOURCE_DIR}/3rdparty ) This adds the directory only for the target (executable / library) app. answered Oct 19, 2011 at 13:03. Second, you list the headers in your add_executable() or add_library() call. Use: target_link_libraries(Demo ${blahblah} Library) so that CMake will know you are referencing the target "Library" and not a variable. a at the end on Linux, and . Apr 12, 2011 · You still need to create a library with the source files with add_library and link it to your executable with target_link_libraries. This can be useful for project-wide settings. SDL_LIBRARY. a files. For add_library and add_executable, it can cause CMake to generate certain IDE-integrated buildsystems like Visual Studio to display those header files in a perhaps more-desirable way, but to my knowledge, that's it. Dec 30, 2020 · 19. xxx - is the library name. g. I wrote some quick CMake to create an import target for it as follows: add_library(BeClearWrapper SHARED IMPORTED GLOBAL) set_target_properties(BeC&hellip; May 19, 2020 · set(CMAKE_CXX_EXTENSIONS OFF) add_executable(demo demo_python. exe. You can also set it from command line: cmake -DCMAKE_BUILD_TYPE=Debug. Talking about distribution the executable or shared library with dynamically linked libraries and CMake build system: SET(CMAKE_BUILD_RPATH_USE_ORIGIN TRUE) This var forces linking with relative path within the build tree, so in result the build directory can be movable. This library will contain our own implementation for computing the square root of a number. Sep 19, 2017 · As @Anedar mentioned, to resolve this situation one needs target_include_directories with PUBLIC or INTERFACE options in the library CMakeLists. The executable can then use this library instead of the standard square root function provided by the compiler. As an example, if your project's sources are in src, and you need headers from include, you could do it like this: src/main. My CMake files look like this: Algo: Jan 5, 2017 · add_executable(main main. But this is not what I want to do. cpp, . link_directories (${LIB_BINARY_DIR}/Lib) # Add executable called "TestProjectExecutable" that is built from the source files add_executable (TestProjectExecutable app. cpp) target_link_libraries(demo ${CMAKE_THREAD_LIBS_INIT} ${CMAKE_DL_LIBS} lutil) target_link_libraries(demo pybind11::embed) and here the output of the cmake. I searched a lot and found that in earlier versions there was a problem where you could not link intermediate libraries in the result executable. Simply put, the add_library(objlib OBJECT ${libsrc}) command instructs CMake to compile the source files to *. The add_library(A ) and target_link_libraries(A ) don't find the files because the current directory is A. In other words, 1) yes, CMake automatically sets the rpath, but only for the build tree by default. Every add_library, add_executable, and add_custom_target command creates a target. cxx ) target_link_libraries( foo bar ) add_executable( foobar foobar. You can define multiple executables within your project using multiple add_executable() commands. SDL_INCLUDE_DIR. include_directories (${LIB_SOURCE_DIR}/Lib) # Make sure the linker can find the Lib library once it is built. Next, use the CPACK_INSTALL_CMAKE_PROJECTS variable to specify which projects to install. If there are no external dependencies, other than the compiler itself, this is all you need. Build and Run ¶. After checking the local object store, a request is made sequentially to each URL in the ExternalData_URL_TEMPLATES list with the data’s hash. cpp) target_link Jan 12, 2023 · The add_executable() command is how you declare a new executable target to be built. add_library(<name> [STATIC | SHARED | MODULE] [EXCLUDE_FROM_ALL] [source1] [source2 ]) Adds a library target called <name> to be built from the source files listed in the command invocation. It is also propagated by calls to the try_compile() command into the test project. If a dependency would add a clashing target name, it cannot be brought directly into the build with this method. txt ├── build ├── lib │ ├── CMakeLists. Because of that, build system, such as CMake, doesn't have to know about them when the final Since the directory structure in your project is just there to keep your files organized, one approach is to have a CMakeLists. Apr 28, 2020 · The first argument to target_link_libraries() should be a valid CMake target, created by add_library() or add_executable(). For example: PhotoShop is a program and Qt is a library. CMake automatically found and verified the C++ and CUDA compilers and generated a Add an executable to the project using the specified source files. Projects typically install some of the library and executable files created during their build process. The <target> may not be an ALIAS. However, the option CONFIGURE_DEPENDS implies that corresponding directory will be re-checked every time building is requested, so build process would consume Nov 7, 2012 · Yes. Names starting with a capital letter are reserved for built-in file sets predefined by CMake. Jan 31, 2018 · I am using CMake 3. dll ). In the Step12 directory, create a file called MultiCPackConfig. cpp) 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. Instead other targets created by add_library() or add_executable() may reference the objects using an expression of the form $<TARGET_OBJECTS:objlib> as a source, where objlib is the object library name. txt file so that the library will get built. CMakeLists. This would also make sure your object files are built before myProgram is linked. See documentation of the directory and target LINK_OPTIONS properties. Note that the add_library() declaration makes use of CMake syntax that doesn't look add_executable is for creating an executable program - you know: my_program. For example: What Windows Linux executable foobar. For example: add_link_options("-fexceptions") add_executable(first-test first. Adds an executable target called <name> to be built from the source files listed in the command invocation. The add_executable() function requires me to provide at least one source file. For example, if you add. My project file structure looks like this: ├── CMakeLists. FindPython3. After that you need to make sure that your find_package calls find those static libraries. Once found, a Apr 27, 2023 · I have a shared library that is provided to me for for target aarch64. For example: include_directories(${CMAKE_CURRENT_SOURCE_DIR}/hdr) answered Jul 7, 2014 at 20:28. This is similar to add_executable(). a-files) only. Libraries are very useful when a C++ project becomes large enough, we may want to split the code into multiple library and executable CMake targets in order to make our project more modular and understandable. so) target_include_directories(externalLibA. txt is the current directory at runtime. add_executable() tells CMake to create an executable using the C/C++ compiler with the given files as inputs. Dec 14, 2023 · Fork 4. Figure 1 shows the output. Jan 21, 2013 · I am using CMake on a linux environment using cmake 2. CMake 中文教程：[移除了无效网址] 总结. Example: add_executable (my_program main. . Compile with -MT or equivalent flag (s) to use a multi-threaded statically-linked runtime library. add_executable(<name> ALIAS <target>) Creates an Alias Target, such that <name> can be used to refer to <target> in subsequent commands. To make use of the new library we will add an add_subdirectory call in the top-level CMakeLists. If not specified, OUTPUT_DIR source property will be used. e. . Feb 3, 2019 · Using add_library is required when you have 2 executables using the same jsoncpp code. When another target links to one of the libraries CMake repeats the entire connected component. (The source files can be omitted here if they are added later using target_sources() . Now we will add a library to our project. This is how you add linker flags to a target in modern CMake (3. exe foobar static library foobar. ¶. add_library(externalLibA SHARED IMPORTED) set_target_properties(externalLibA. exe on Windows). target_link_libraries. so file extension. Specifically, the add_executable(MyProgram my_program. Jun 15, 2021 · Instead other targets created by add_library() or add_executable() may reference the objects using an expression of the form $<TARGET_OBJECTS:objlib> as a source, where objlib is the object library name. The add_library(B ) finds the files because here the current directory (B) actually matters. Raw. To configure the CMake project and generate a makefile, I used the command. Use the add_library() function to define a STATIC library ( . Where the library name is the name of the shared library, minus the first lib part and minus the . h) You get to pick a type of library, STATIC, SHARED, or MODULE. 1. h ) add_library( YourLib ${LIB_SOURCES} ${LIB_HEADERS} ) We want to create an executable that when run creates a basic main. : my_library. 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. txt or these files are located. Instead, use ${CMAKE_CURRENT_SOURCE_DIR} whenever you want a path relative to the CMakeLists. The details of this project are not important. This command can be used to add any link options, but alternative commands exist to add libraries ( target_link_libraries() or link_libraries() ). 1 day ago · The underlying build tool can be invoked directly, of course, but the --build option is portable. The name of the file set to create or add to. You do this with linker flag: -l<library name>. Jun 16, 2021 · Goals. txt file and alludes to the existence of a . cxx ) target_link_libraries( foobar foo ) Cautions and Considerations: Building Error-Free Libraries with CMake's add_library () CMake Explained: Creating Libraries with add_library() Overview: Usage: add_library() takes several arguments: Library name: This unique identifier for the library (e. file( GLOB LIB_SOURCES lib/*. Mar 9, 2022 · 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. CMake can handle various source file types, including . # Lets say we want to add a library and an executable, both with the same name. This is a bit tricky, check out CMAKE_BUILD_TYPE in the docs (you can set it and/or "if" by it). As of my understanding CMake searches for "libxxx. -Dfoo -Dbar # Common definitions. Oct 25, 2021 · CMake’s add_library – Creating Libraries With CMake. Or you can add the lib output folder to the PATH when debugging. The TARGETS keyword is immediately followed by a list of the targets created using add_executable or add_library, which are to be installed. Creates an Object Library. Find Python 3 interpreter, compiler and development environment (include directories and libraries). 0. c but it could include more . To change the default location of executables, set CMAKE_RUNTIME_OUTPUT_DIRECTORY to the desired location. $ cd Help/guide/importing-exporting/MyExe. o. cmake - handling executable and library with same name. lib or my_library. txt │ Jul 17, 2016 · It doesn't memorize at the directory where the CMakeLists. For each library or executable CMake creates, it tracks of all the libraries on which that target depends using the target_link_libraries command. PROJECT, CMakeLists. A library is a bundle of compiled source code that can be used by other projects. E. c, and platform-specific extensions. add_executable(<name> [WIN32] [MACOSX_BUNDLE] [EXCLUDE_FROM_ALL] [source1] [source2 ]) Adds an executable target called <name> to be built from the source files listed in the command invocation. cmake -DCMAKE_CUDA_FLAGS=”-arch=sm_30” . In the first case, create a FindPower. 1. This variable is used to initialize the MSVC_RUNTIME_LIBRARY property on all targets as they are created. -- The C compiler identification is GNU 5. I also tried cmake 2. --target install. When the source is just added to the directory without modifying this file, one would have to manually rerun CMake to generate a build system incorporating the new file. Add an executable to the project using the specified source files. ) The <name> corresponds to the logical target name and must be Step 2: Adding a Library. For example: TARGET_LINK_LIBRARIES(ExecutableName xxx) where ExecutableName - is the name of executable. To accomplish this we need to add BUILD_SHARED_LIBS to the top-level CMakeLists. so libraries to the executable. Configure the CMake project such that source files within the library can include headers not in their same directories. from the build directory. There are multiple signatures for this command. In CMake, we use TARGET_LINK_LIBRARIES () to link a shared library to an library/executable. For a detailed description of version range usage and capabilities, refer to the find_package() command. CMake will care the rest. $ mkdir build. answered Oct 14, 2016 at 17:09. md5 content link containing the data’s MD5 hash. The add_library is similar, but is how you declare a library target to be built, where the library can be linked to via the target_link_libraries() command. This is possible, because the main() function is contained in one of these libraries. BTW, that possibility to call add_library without source files is described in the documentation for add_library. Oct 14, 2016 · target_link_libraries(Demo ${blahblah} ${Library}) What you are saying is to use the string variable called Library, which won't exist. cpp. This can all be achieved with CMake’s add_library() function. 8. txt has to be the same. 13 relative paths, passed to target_sources, are interpreted relative to further invocations of add_executable (or add_library). cpp) and added a library: add_library(mylibA SHARED) Specify an output directory where the generated source file will be placed (swig -o option) for the considered source file. cpp three. The <name> does not appear in the generated buildsystem as a make target. a static libraries or . lib, you can it do like this: target_link_libraries(myProj myLib) edited Mar 29, 2023 at 11:45. dll. Library type: Optional choice between STATIC (archival), SHARED Mar 16, 2018 · If your library should be parametrized for some compile definition, consider to create a CMake function/macro, which creates a library instance when needed: function(add_lib_for lib_name purpose_name) add_library(${lib_name} SHARED <sources>) target_compile_definitions(${lib_name} PRIVATE. Here's a refresher of what that looks like from the command line: mkdir Step3_buildcd Step3_buildcmake . Configure the overall project with VSCode such that I can build, run, and debug the library and executable in a manner Before CMake 3. cpp) CMake automatically adds the lib to the front and the . We use the option The named <target> must have been created by a command such as add_executable() or add_library() and must not be an ALIAS target. The allowed values are: MultiThreaded. For this tutorial we will put the library into a subdirectory called Probably the most important item is targets. From the book "Mastering CMake". For example: For example: add_library( foo foo. cpp) call at line 8 will create an executable called MyProgram (or MyProgram. for usage with respectively include_directories and target_link_libraries. 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. In this file, first include the default configuration file that was created by the cmake executable. 11) project (Project) include_directories (Project) add_subdirectory (Dependency) add_executable (Project main. c files or additional . Target names: Use other CMake-defined targets from your project or external ones (IMPORTED_TARGETS). a library, CMake is perfectly aware that this is a static library, and thus adds Wl,-Bstatic option before that library. cpp and . Assume your project called myProj and the pre-built library myLib. The install command provides the TARGETS signature for this purpose. h relative to the top directory, not relative to the src/ one. It doesn't have impact on whether the buildsystem itself functions properly or not with respect to doing builds. Peter. Mar 29, 2023 · If you're asking about how to link your project to the pre-built static library, you can do like this by calling target_link_libraries. Peter Mortensen. 19: When a version is requested, it can be specified as a simple value or as a range. Configure a CMake project that can build a library and a separate dependent executable for testing. We add the new library to the executable, and add MathFunctions as an include directory so that the mqsqrt. a How do I achieve this in CMake? I get hung up with the fact that CMake’s add_executable and add_library commands automagically add the suffix, and the name has to be unique. Targets represent executables, libraries, and utilities built by CMake. 22: The environment variable CMAKE_INSTALL_MODE can override the default copying behavior of install(). txt file is modified to add a new source. Some of them define installation options for files and targets. 2k 22 109 132. If you use this command on linux machine. add_library(<name> ALIAS <target>) Creates an Alias Target, such that <name> can be used to refer to <target> in subsequent commands. , my_library ). FetchContent And find_package() Integration ¶ Sep 3, 2018 · Just simply add in your DEPENDENCY project this function and fill in include directories you want to see in the main project. Each target_sources(FILE_SET) entry starts with INTERFACE, PUBLIC, or PRIVATE and accepts the following arguments: FILE_SET <set>. 31. Oct 29, 2019 · You can either construct such an imported target manually in the find script, or have CMake do it for you. add_library() 函数是 CMake 中用于创建库目标的命令。 库目标可以是静态库、共享库或模块库。 有关 add_library() 函数的更多信息，请参阅 CMake 文档。 其他资源. png. I was not able to tell if this was resolved or still an issue. First you need to make sure that all libraries you depend on are built statically. Building a static library and executable which uses CUDA and C++ with CMake and the Makefile generator. so file is included into the executable. It must contain only letters, numbers and underscores. cc) which has #include directive to include the file. with target_sources command. One project can have multiple libraries and binaries. But CMake need to maintain default linkage after every option, so it adds -Wl,-Bdynamic after the library: -Wl,-Bstatic -ltestlib -Wl,-Bdynamic. In addition to compiling executable applications, CMake also supports generating library artifacts. (The source files can be omitted here if they are added later using target 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. Mar 19, 2021 · On Linux the full path to the . /Step3cmake --build . h header file can be found. add_executable() can take various optional arguments to customize build settings, such as compiler flags, dependencies, and output directory. This could be something as simple as. The <name> corresponds to the logical target name and must be globally unique within a project. Jun 22, 2020 · If you want to add a directory to the list of include directories for a specific part of your build only, you use e. It is a wrapper around the built-in add_executable() command, and provides additional logic to automatically handle things like linking of Qt plugins in static Qt builds, platform-specific customization of library names, and so on. For example, the following command will create a target named "foo" that is a static library, with foo1. Jul 10, 2019 · 4. hpp extension, although not always - for example, C++ standard library headers have no extensions - are "copy-pasted" by compiler into every . cpp (or . object. Navigate to Help/guide/importing-exporting/MyExe, create a build directory, run cmake and build and install the project. I need to do some special conditioning on an archive (static library). Inside your function/macro you may call original CMake function using underscore-prefixed name: Alias Executables ¶. Library names: e. kralyk. New in version 3. PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/libA. May 31, 2013 · You have a couple of choices. It applies to all subsequent add_library and add_executable commands in the same scope and sub-scopes. After LLVM has finished building, install it from the build directory: $ cmake --build . Changed in version 3. Thus, to forward your intended link flags to the linker, you must use the LINKER: prefix. Yes, I know this, my problem is: how to include the . 2) CMake can set the rpath for the installed executable as well, it just has to be 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. cpp) For specific targets there is target_link_options: Creates an Object Library. The source tree is probed for a Input/Image. c. 12. 4. a or . – Velkan. so or . C, or . h or . With such options CMake expectations about default Apr 3, 2019 · This means you need to tell CMake to add the automatically determined parts of the RPATH which point to directories outside the build tree to the install RPATH. add_library (resman $ {src_cpps} $ {src_hpps} ) target_link_libraries (resman $ {Boost_LIBRARIES} $ {LIBYAML} $ {LIBFMT}) Jan 25, 2021 · 0. – Andrea. cpp ) file( GLOB LIB_HEADERS lib/*. Flags: Special options like -lmyflag for custom linker flags. so" at the paths mentioned in LINK_DIRECTORIES () macro. Feb 17, 2022 · Moreover, we want the exec and library to have the same name. 13+): # my_tgt can be an executable, library, or module. txt before the add_subdirectory command, your executable will end up in Project/build for Unix Dec 22, 2014 · CMake では、add_executable()やadd_library()などによって、実行ファイルやライブラリなどを生成するための各ビルドシステムのターゲットを作成します。カスタムターゲットとは、生成を目的としない任意のターゲットを作成するためのもので、以下のような構文 . txt: cmake_minimum_required (VERSION 2. cpp) # Link the executable to the lib library. zy sp mb pq sr bq rt wf tz qo