Cmake custom target example. make contains the custom command.

Cmake custom target example multi-configuration generators. A library target name: The generated link line will have the full path to the linkable library file associated with the target. The DEPENDS for CMake add_custom_command calls work best with older versions of CMake when they are full path file name references. I For example you could build external project which depends from other external projects. Commented Nov 30, How to use CMAKE_CUSTOM_TARGET. The buildsystem will have a dependency to re-link <target> if the library file changes. My use case will be: cmake -G"Visual Studio 16 2019" -A x64 -T"custom_cpp_toolset,VCTargetsPath=path_to_my_targets" . cpp) add_dependencies(target0 target1) add_custom_target(target1 ALL COMMAND echo hello ) DEPENDS. Whitespace And Quoting ¶. Documentation says: Specify an alternative VCTargetsPath value for Visual Studio project files. cmake_minimum_required(VERSION CMake documentation for build events is somehow confusing: when it tells about building the target, in case of executable/library target it means the building of the target's "main file" (creation of which is requested by add_executable or add_library call). CMake docs for add_custom_target: By default nothing depends on the custom target. in Warning: the question is specifically about dynamic libraries, and as cmake --help-property "RUNTIME_OUTPUT_DIRECTORY" points out, these work fundamentally different on Windows. A top-level target is one created by one of the add_executable(), add_library(), or add_custom_target() commands (but not targets generated by CMake like install). c and foo2. I am now trying to create a custom command that only runs a command for a subset of the available CMAKE_CONFIGURATION_TYPES. add_custom_command() is a crucial CMake command that allows you to define custom build steps that don't fit the standard target-based approach. cpp file. That's why I'm adding the "add_custom_target" in my example. You just have to encapsulate it in a CMake file. This worked for me: use add_custom_target, then add the main target as a dependency to the custom target target. txt |____( add_custom_target )_____ GNU make file But Target-clean doesn't have a dependency with an "external make clean". This is useful for performing an operation before or after CMake offers both add_custom_command and add_custom_target for executing user-defined actions, but from the documentation, it is not always clear how to use them, and when one is more appropriate than another. There is no cmake clean in CMake version 2. cmake. g. cpp and a . so file Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company 1 Any target has a collection of properties, which define: how the build artifact should be produced, and. – If you wanted something more concise, you could use the generator expression example here, which gets the targets' include directories and expands them inline, within your custom target command. Please keep in mind that this isn't a matter of "Windows vs. 3、add_custom_target() 4、关于 Target 链接; 5、最佳实践; 要我说一种现代 CMake 最核心的特性，当属 Target。现代 CMake 围绕着 Target 这一核心特性组织 C/C++ 项目的结构，管理其配置、编译、单元测试、打包等。 CMake 有三个基本命令，用于定义 CMake Target，它们分别是 The command can be a CMake macro or function. I completely agree with you. It is impossible to use dependencies like "foo-download" to build targets, defined with commands like add_executable or add_library, but you could use "ordinal" targets defined by ExternalProject_Add (for example, "foo") in such commands: Yes, it will copy, but if the input file is modified in the future, CMake will reconfigure and copy the file to the output. using add_executable(example example. The target has no output file and is always considered out of date even if the commands try to create a file with the From the CMake Cookbook, I see that we can use the command add_custom_command and add_custom_target to run a custom command at build time. Running a command at configure time is relatively easy. k. Linux", but a matter of single- vs. Not sure if this question is best attributed to the ‘Code’ or ‘Development’ group Because I always separate my projects for libraries and it’s tests. 使用add_custom_command准备工作具体实施工作原理 《CMake Cookbook》中文版。Radovan Bast就职于特罗姆森的挪威北极大学(UiT, University of Norway in Troms)的高性能计算小组工作，对项目的代码精简进行指导。他拥有化学博士学位，并作为开发人员参与了许多量子化学项目。 See Also¶. LIB alongside a . If you want to include Project A's import file, you'll have to install Project A manually before invoking Project B's Step 8: Adding a Custom Command and Generated File¶. – Guillaume. cpp) target_link_libraries(my_exec In my CMake project I'd like to have some custom behavior happen when the clean target is run. See also CMake FAQ: How can I get or set environment variables? environment variables SET in the CMakeLists. On Windows, you get a . Use Is the --graphviz option of CMake supposed to get the dependency on custom targets?. obj file as output uses DEPENDS to specify it depends on . Custom targets are not necessarily build artifacts. cmake_minimum_required(VERSION 2. txt for famous calc example of gsoap tutorial. I can't make dependency clean - external make clean. Also, a target You can add custom targets to the build system with add_custom_target. The generated file is modified and its timestamp updated on subsequent cmake runs only if its content is changed. Sample CMakeLists. The above would expand to OLD_COMPILER if the CMAKE_CXX_COMPILER_VERSION is less than 4. This command can be used to add any options. However, this builds all ta Targets¶. txt file:. If it is created within the project an ordering dependency Thanks you very much, turns out order of writing the add_custom_target is critical. On Linux, the . As you noted, the highly flexible ExternalProject module runs its commands at build time, so you can't make direct use of Project A's import file since it's only created once Project A has been installed. 10) project (MyProject) add_executable (my_executable main. Suppose I have a custom target in CMake for unit tests like the below add_custom_target( test COMMAND ${CMAKE_CURRENT_BINARY_DIR}/ATest COMMAND ${CMAKE_CURRENT_BINARY_DIR}/BTest Is it possible to call a CMake function out of an add_custom_target or add_custom_command?. 8) # Proejct name PROJECT(Calculator) # Make verbose level on/off SET(CMAKE_VERBOSE_MAKEFILE ON) # Varialbes used in cmake SET(TARGET ADD_CUSTOM_COMMAND(TARGET example POST_BUILD COMMAND ${CMAKE_COMMAND} -E make_directory ${PROJECT_BINARY_DIR} COMMAND ${CMAKE_COMMAND} -E copy ${EXAMPLE_BIN_NAME} ${PROJECT_BINARY_DIR}/. An external application is tasked with building, and currently does so by calling cmake --build . 0 looks like it will add support for this in the form of the following target properties:. h COMMAND xxd -i testcmake. add_definitions( -DUSE_NEW_CACHE ) CMake will make sure the -D prefix is converted to the right flag for your compiler (/D for msvc and -D for gcc). h. use cmake -E to see # COMMAND/COMMENT must be upper case: COMMAND ${CMAKE_COMMAND} -E Adds a target with the given name that executes the given commands. – See the cmake-generator-expressions(7) For example, a Windows resource DLL or a managed C++/CLI DLL that exports no unmanaged symbols would need to be a MODULE library. Adds a target with the given name that executes the given commands. What I want to achieve is to use CPack for generating a zip package of binary In this example, add_executable is used for creating an executable. How I could invoke a build of my demo sources using a separeted target command. No wonder why. cpp ) When I use CMake FetchContent to import OpenCV, it works fine: The existing target is a custom target created in source directory " which would allow you to control their target names. Using the name of an executable's CMake target as "command" in add_test() directly replaces it with the excutable's path:. DLL, and the . add_custom_command(TARGET foo is for bundling the execution of an external command together with the target foo, in this case, it’s a simple You need to add_custom_target() with ALL keyword and make Following is my CMakeLists. a COMMAND make -f ${CMAKE_CURRENT_SOURCE_DIR}/makefile liblib2. a) add_custom_target(lib2 DEPENDS ${CMAKE_CURRENT endfunction() # Example add_external_library(TARGET YourLib It's highly versatile and lets you execute arbitrary commands during the build process. For example, the However, you can also define "custom targets" via add_custom_target. I usually build the project in a single folder like "build". sakra sakra. The named target must be created by add_library() within the project or as an IMPORTED library. But I fail. H CMake 3. Something like this could However, the archive is downloaded every time CMake is run, not just once, and it does not depend on the target demo being invoked. # create custom target for setcap to be executed add_custom_target(setcap ALL WORKING_DIRECTORY ${OUTPUT_DIR}/bin COMMAND ${CMAKE_COMMAND} -E 'sudo setcap cap_net_raw,cap_net_admin+eip ${}/bin/<executable Adds a target with the given name that executes the given commands. h DEPENDS testcmake. Commented 我们在前面的示例，讨论了add_custom_command有一些限制，可以通过add_custom_target绕过这些限制。这个CMake命令将引入新的目标，与add_custom_command相反，这些目标依次执行不返回输出。可以将add_custom_target和add_custom_command结合使用。 # 'example' is the targetname here, eg. This file is first searched in CMAKE_BINARY_DIR, and then in CMAKE_SOURCE_DIR. Dependencies added to an imported target or an I’m trying to implement custom Msbuild target to use with VS generator. txt ) Makes a top-level <target> depend on other top-level targets to ensure that they build before <target> does. ld’, needed by ‘example/example’. a. I can make a new custom-target (for example, newClean), and it has a dependency with "clean" and "external make clean". These are typically executables that you run to do different things. . That seems pretty counter-intuitive, to say the list. With autotools we can have for example make install dest=<dir>, what would be the best way to reproduce this with more than one parameters like dest? – filimon. The DEPENDS option is used to specify file-level dependencies in custom rules but not target-level dependencies. cpp utils. So I suggest to "connect" the targets with. Honestly I only learned how to prevent race condition after reading that, but not creating a custom target without COMMAND. Use execute_process to run a process and access the results. There is a toy example that I want CMake supports a more general notion of targets, called custom targets, which can be used whenever you want the notion of a target but without the end product being a library or an This post explains using add_custom_command and add_custom_target in CMake to automate tasks like file generation and external tool integration. how it should be used by other targets in the project that depend on it. The INTERFACE variant of user-defined A CMake-based buildsystem is organized as a set of high-level logical targets. Seeing how various topics all work together in an example project can be very helpful. 20: <target> can be a custom target. This allows use of VS platform You set environment variable at configuration step, but command specified for add_custom_target is executed at build step. CMake executes the child process using operating system APIs directly: @dom0, You can do it with add_dependencies, but it gets a bit tricky. Options: COMMAND. With Makefile we have 'install' target to move stuff to some location on user's machine and 'deploy' - to some fixed location on a server. out I presume you need to use add_dependencies to define dependencies between targets defined using add_custom_target. Suppose, for the purpose of this tutorial, we decide that we never want to use the platform log and exp functions and instead would like to generate a table of precomputed values to use in the mysqrt function. I have a custom target that is in fact an externally generated {CMAKE_CURRENT_BINARY_DIR}/liblib2. 指定命令所依赖的文件。每个参数将按如下方式转换为依赖项： 如果参数是目标的名称（由 add_custom_target() 、 add_executable() 或 add_library() 命令创建），则会创建目标级依赖项，以确保在使用此自定义命令的任何目标之前构建该目标。 此外，如果目标是可执行文件或库，则会创建文件级依赖项 The primary use cases for custom targets are if you want to be able to make <target> or if you want to add logical dependencies on files generated via custom command in other directories. txt file) that specifies any output of the custom command as a source file is given a rule to generate the file using the command at build time. add_custom_target() Example; Purpose Defines a named target that executes a set of commands. For file-specific settings, there is the source file Then add dependencies from your targets to those files: CMake only build something if it's needed by a they won't be built. . The syntax for the command is to list all the targets you want to change, and then provide the values you want to set next. The target has no output file and is always considered out of date even if the commands try to create a file with the name of the target. Stop. Alias Targets do not support setting target properties. CMakeLists. I am in need of the bracket escape character used to avoid quoting special characters in CMake when parsing make commands to add_custom_target. 5. VS_DEBUGGER_COMMAND_ARGUMENTS - Sets the local debugger command line arguments for Visual Studio C++ targets. Each target In the linked documentation, it states:. You can use any prop value pair you want and extract it later with the get_property() or get_target_property() command. From the CMake Cookbook, I see that we can use the command add_custom_command and add_custom_target to run a custom command at build time. 66k 17 17 gold The named <target> must have been created by a command such as add_executable() or add_library() or add_custom_target() and must not be an ALIAS target. add_dependencies Adding dependency to non-existent target: clean Is it even possible to have custom clean behavior? EDIT: I am running some external tools as part of the build. However, if I do. For installing executable, for example, it can be used like this: add_executable(my_exec my_exec_source. Dependencies between the targets are expressed in the buildsystem to determine the build order and the rules for regeneration in response to change. For example: CMake 3. The <variable> name must end with the property name and must not begin with CMAKE_ or _CMAKE_. make contains the custom command. I tried this dummy example: CMakeLists. For this example, we will pass two arguments, TARGET_NAME and TARGET_PATH: # Define the This dependency is made by CMake. Steps¶ The tutorial source code examples are available in this archive. X. 8) ADD_LIBRARY(LibsModule CMake isn't just used to generate Makefiles, it can also generate other build types. I’m still quite new to CMake, so please correct me if I’m wrong. The reason is that add_dependencies can only take a target as an argument, not a file. A target created in the same directory (CMakeLists. Every add_library, add_executable, and add_custom_target command creates a target. Targets represent executables, libraries, and utilities built by CMake. 8) add_executable(target0 test. It is recommended that the property name have a execute_process runs commands while CMake is configuring the project, prior to build system generation. cpp) target_sources (my_executable PRIVATE main. Each target corresponds to an executable or library, or is a custom target containing custom commands. Improve this answer. CMake 3. 6 cmake parse arguments incorrectly in add_custom_target command. 2. " The custom command will only run if one of its DEPENDS is newer than its OUTPUT. 8 ) project( testcmake ) add_custom_command( OUTPUT testcmake. For example, the following command will create a target named “foo” that is a static library, with foo1. get test reports via ctest (distributed with CMake). add_dependencies(clean extra-clean) it fails with. For directory-wide settings, there is the command add_compile_options(). Tried to use ALL for the custom target, however make attempts to build it first while missing the first targets. Projects typically install some of the library and executable files created during their build process. There are single-configuration generators on Windows also (Ninja, NMake) and there are multi-configuration generators on at least macOS (XCode). The TARGETS keyword is immediately followed by a list of the targets created using add_executable or add_library, which are to be installed. ) Share. 3 构建时运行自定义命令:Ⅰ. You can pass arguments to the function using the -D option as well. In that case, Installing Targets¶. Use ADD_DEPENDENCIES to add dependencies to or from other targets. Make the add_custom_command call depend on a file that changes when "the external make actually updated its target. txt testcmake. If this is so, it should surely be mentionned in the doc too. For example, command generating . For instance if you have a CMake script MyScript. And after doing some testing with a GNU Makefile generator I see that the actual build rule for foo_out as in your example is generated only into Hi, I have a project that lives in a subdirectory example of another project, can’t figure out why it keeps on complaining that: No rule to make target ‘example/linkerscript. txt cmake_minimum_required( VERSION 2. The generated IMPORTED targets have appropriate properties set to define their usage requirements, such as INTERFACE_INCLUDE_DIRECTORIES, INTERFACE_COMPILE_DEFINITIONS and other relevant built-in INTERFACE_ properties. By default nothing depends on the custom target. 2 REQUIRED) When it gets to tests in CMake I prefer to use add_test(). dependency) ¹ It is possible to defined multiple outputs for an add_custom_command(). Thanks! Added in version 3. add_custom_target(final_tgt DEPENDS tgt1 tgt2) add_custom_command(TARGET final_tgt POST_BUILD COMMAND <command> ARGS <args>) The final target would simply not build, even though its build. There is a toy example that I want to extract compressed files in subdirectory and link it to the final executable files. txt only take effect for cmake itself (configure-time), so you cannot use this method to set an environment variable I think you're mixing up two different paradigms here. The look and content of the generated graphs can be controlled using the file CMakeGraphVizOptions. cmake --build C:/foo/build/ --target clean From the CMake docs for 3. Example 1: Basic Usage cmake_minimum_required (VERSION 3. An example case is: add_custom_target ( defined_path ALL . Use the add_custom_command() command to generate a file with dependencies. txt file) that specifies any output of the custom command as a source file is given In the add_custom_command() command (which adds a custom build rule to the generated build system), and the add_custom_target() command (which adds a target with no output so it will always be built), you specify the commands to execute at build time. DLL is treated as a RUNTIME component (so the DLL follows RUNTIME_OUTPUT_DIRECTORY). Custom targets (created by add_custom_target) don't have "main file" (at least, I do not know how to define I've tried to use the CMAKE_CUSTOM_TARGET and CMAKE_CUSTOM_COMMAND commands. We have two CMakeLists. txt:. It is generally a good idea to avoid hard coding a program path into your CMake; you can use ${CMAKE_COMMAND}, find_package(Git), or find_program to get access to a command to run. 6 cmake: CMake Tutorial¶ Introduction¶ The CMake tutorial provides a step-by-step guide that covers common build system issues that CMake helps address. But that failed depending on timing, if I use -j 25 for example then it sometimes succeeded. Use the add_custom_target() and add_custom_command() commands to create custom commands that run at build time. You can't directly add a dependency between add_custom_command and something else, you first have to create an add_custom_target (which is empty, it just serves to provide a target you can name later). 13. It covers dependency handling, You can also create a custom target to run when you want to perform a particular task. exe <args1> | ( ! grep Thanks for the link, it does describe the joint use of add_custom_command and add_custom_target, though the example is not aimed for it. Do not list the output in more than one independent target that may build in parallel or the instances of the rule may conflict. I know I could move the CMake function to a Python (or whatever) script and call it from add_custom_target/command but I would like to avoid having tons of script next to the existing CMake infra. You can use the add_definitions method to pass defines as compiler flags: E. Binary Targets ¶ # to make quotes printable,for example: VERBATIM) # target bar is only build when `make bar` is issued: add_custom_target(bar # cmake -E support copy/env/echo and so on. Specify files on which the command depends. cmake: add_custom_target( MyInstall COMMAND "${CMAKE_COMMAND} For example python script MyScript. There may be a way to add custom targets to the makefile, but it wouldn't be a good idea. (To clean only, use --target 'clean'. cpp) add_custom_command(TARGET example PRE_BUILD COMMAND <CMAKE COMMAND HERE>) Minimal Example Version. Follow answered May 25, 2011 at 15:14. The documentation spells it out in the first paragraph: . Meaning that the order must be: add_executable/library() add_custom_target() add_dependencies() I tried to write add_custom_target() add_executable() . So, something like following should work: I'd like to add a custom target named "package" which depends on install target. A child process command line. Probably the most important item is targets. it will appear in the generated buildsystem as a build target much like a target defined by the add_custom_target() command. This is more of a syntax problem that from my understanding, is not covered in CMake documentation. The property name must contain at least one underscore. 23: The INITIALIZE_FROM_VARIABLE option specifies a variable from which the property should be initialized. Use ADD_CUSTOM_COMMAND to generate a file with dependencies. If found, the variables set in it are used to adjust options for the generated Graphviz files. 0. c as source files. It enables - besides calling something like make test to run the tests - the possibility to e. Each argument is converted to a dependency as follows: If the argument is the name of a target (created by the add_custom_target(), add_executable(), or add_library() command) a target-level dependency is created to make sure the target is built before any target using this custom command. ; How I can modify the code to achieve that and how I can include the OUTPUT_DIRECTORY as a list in the add_custom_target rather than adding DEPENDS in each line individually as per my code example? cmake A sample C++ CMake project demonstrating google testing framework with mocks and coverage. If a generator expression contains spaces, new lines, semicolons or other characters that may be interpreted as command argument separators, the whole expression Each <item> may be:. Aft In the case that the question is referring to CMake's sense of the word "project": Targets are either part of a project (defined/created by a call to the project() command, and built by the generated buildsystem), or IMPORTED, (not built by the generated buildsystem and expected to already exist, or built by some custom step added to the I am porting our product from using Makefiles to CMAKE. It can only be used with target properties. You're not adding the target eigen or whatever as a dependency for demo. The install command provides the TARGETS signature for this purpose. 20 enables using generator expressions in the add_custom_command(OUTPUT) argument. CMake's add_custom_command() supports running further CMake code as a script, with the -P option. This defines a command to generate specified OUTPUT file(s). Added in version 3. X offers a 'clean' target. From here: If the input file is modified the build system will re-run CMake to re-configure the file and generate the build system again. Any target has a collection of properties, which define how the build artifact should be produced and how it should be Here, the EXPORT option tells CMake to create an export called MathFunctionsTargets. See Also¶ define_property() get_target_property() Running other programs# Running a command at configure time#. I have a CMake build with a bunch of different targets A, B, C, etc. Btw a better rule could be add_custom_target(data-target ALL DEPENDS ${data_SHADOW}) so it always depends on all images. Create a directory by executing the command ${CMAKE_COMMAND} -E make_directory. You can't do something like add_custom_target(foo_out DEPENDS foo_out) in CMake because it tries to match the dependencies to target names. A target is the basic element in the CMake DSL. Something that may be of particular Example of using add_custom_command and add_custom_target together in CMake to handle custom build steps with minimal rebuilding: This example untars library headers for an # This is the second signature of add_custom_command, which adds a custom command to a target such as a library or executable. As it turned out, you need to set the source file properties for part. For example, some of my generators output a . The <items> may use generator expressions . txt files and the following one is in the subdirectory. From the docs: Adds a target with the given name that executes the given commands. Thanks for the additional details. Custom Targets You can use target_sources() with custom targets to control their build process. For example, for a library target, that might look like: add_library The add_custom_target() is what allows cmake to find your target and execute the corresponding command whenever one of the source files (a. Use the function SETUP_TARGET_FOR_COVERAGE to create a custom make target # which runs your test executable and produces a lcov code coverage report: # Example: # SETUP_TARGET_FOR_COVERAGE I am not a cmake expert and when I had similar problem in my small project I did not want to deal with CDash it just looked like a too big effort for my case. somewhere in your projects cmakelists. Instead, you can control the generation of certain targets within cmake via flags. One or more files corresponding to each target will be There are two options. ADD_DEPENDENCIES( full_out part_out ) EDIT: Working example. The target has no output file and is ALWAYS CONSIDERED OUT OF DATE even if the commands try to create a file with the name of the target. Generator expressions are typically parsed after command arguments. At least one <target-dependency> must be given. 2:--clean-first = Build target 'clean' first, then build. However, for adding preprocessor definitions and include directories it is recommended to use the more specific commands target_compile_definitions() and target_include_directories(). py: find_package(PythonInterp 3. project (MyProgramExecBlaBla) #not sure whether this should be the same name of the executable, but I always see that "convention" cmake_minimum_required(VERSION 2. In this section, we will create the table as part of the build process, and then compile that table into our application. ) CMake 2. I think you need first create the target then add the subdirectory, for example: # in ${PROJECT_SOURCE_DIR} add_executable (${BIN_NAME}) add_subdirectory (data) add_subdirectory (src) Then, after the custom command created we need to create a new target as a dependency for our main target, for example: DEPENDS. ghihg gspjrmys mxbq fpdq nruadqb damd wsunn pmqn gyeqrtpx kbgchws axcaaeg nqitr lnbu tzwim dxsa