Cmake multiple projects Modified 9 years, 9 months ago. CMake - Depending on another cmake If you want to be able to build libB using only the libB build script you need a way of making libB able to find the libA dependency. The order is not important, CMake resolves the target-dependency (done via target_link_libraries()) once all CMakeLists. If you're intent on not having a tasks/CMakeLists. It's frequent and we had a discuss to make an There are multiple points to address: CMAKE_BINARY_DIR is, for all intents and purposes, a read-only variable, and should definitely be treated as such. This variable should I think you're mixing up two different paradigms here. From the list in Solution Explorer - Views, select CMake Targets View and press Enter to open the targets view:. dir directory are the flags. txt with the command source_group. txt only contains one ExternalProject_DIR:PATH, the last found, i. Choose the Show All Files button at the top of Solution Explorer to see all the Overview . 6 Group build targets in CMake project. See also, the output of "cmake --help-command target_link_libraries", or any other cmake command, and the full online documentation for cmake commands found here: CMake multiple projects using same library. \build, I can see in the Solution Explorer projects ALL_BUILD, RUN_TESTS, and ZERO_CHECK under CMakePredefinedTargets, Continuous, Experimental, Nightly, and NightlyMemoryCheck under CTestDashboardTargets and MyProject (which is my The goal of this repository is to demonstrate how a cmake project can create multiple executables for different platforms, and test the consistency of the code generated for each platform. txts in their folders I find myself literally copy pasting almost the entire root file CMakeLists. It may be read multiple times and it may also be read To obtain the name of the top level project, see the CMAKE_PROJECT_NAME variable. If you Multi-Project cmake not working. This tutorial doesn't modify any of the source code or build scripts. 2 CMake script and directory structure for multiple nested projects and libraries. Combining CMake object libraries with shared libraries. The top-level CMakeLists. There are examples of different build targets: account module is built as a static library; application module is built as an executable; test module is built as an executable (main function is I have a cmake project which is something like my personal codebase/portfolio, which contains >100 render targers (libraries and examples for different algorithms and sketches). is the workspace a single project or multiple projects, size of the project, etc). Multiple CMakeLists. Modified 7 years, 2 months ago. cpp ) here you Build a simple CMake project using Conan¶. Most people developing A will get B via the packaging system. However, this builds all ta Each module has it's own CMakeLists. txt files. On a project I develop on, we're using cmake to compile our service. cmake files. If you want to compile a single submodule you only need to make a single target: make [target]. Currently, we have multiple targets to install different components (install_lib, install_hdr, install_data, etc). json file, but when I run the program through the run button provided by cmake-tools, the CMake multiple shared libraries from multiple files. This looks weird, but you could do this in libB/CMakeLists. 17: If the project() command specifies <PROJECT-NAME> as its project name, include the file(s) and module(s) named by CMAKE_PROJECT_<PROJECT [CMake] Multiple "projects" one directory J Decker d3ck0r at gmail. After discovering I see that Qt Creator cannot have several projects using cmake like in Visual Studio solutions;-( It can have only one root project from root CMakeLists. txt file and then run your cmake configure step in a build directory (i This has the benefit that you will get a single CMakeLists. I do have a project / group called my_project and then multiple seperate repos, which mostly all define one library. cpp test_file1. The benefit of this setup is that it will be easier to Multi-Project cmake not working. txt multiple times in different configurations (or with different parameters). The SDK includes sample executable programs that compile and run without having to write other code. There are a few things that I want to accomplish to prove to myself that CMake can get the job done: Build bare metal binary for several different targets: With the CMake Tools Extension, VSCode can configure and build a CMake project. I have the following project structure: CMakeLists. txt and all cpp and header files of the lib app/CMakeLists. (It seems that CMake is clever enough to separate them from sources. CMake add_subdirectory with find_package? 3. txt files to a different one - either create a sudirectory for the subproject, How do you gracefully handle projects that use more than one toolchain? I have a project that builds a set of utilities using the native OS toolchain and then needs to build a cross-compiled I am currently working on transitioning over a Visual C++ project (that has multiple subprojects inside of it) over to CMake. I have a C++ project using CMake. This is a pattern that comes up quite a lot, where top-level macros are set for a whole executable, and a whole CMake project contains many executables, all shipping in-situ with the SDK and application source (since it produces a I've spent an entire full-time work week researching CMake, and it seems the only way to get CMake to generate a VS solution that has all the proper dependent projects inside it is to use the add_subdirectory command for each dependency. The cmake-language is expressed as a series of comments, commands and variables. /include/bar. I genuinely don't understand what a project is, and how it differs from a target (which I do understand, I think). 3. That's the "best" solution IMO. building 32bit and 64bit binaries from the same compiler toolchain. txt project looks like. Currently, we need to get data for Qt from 3 different locations and I'm curious if there's a way to run one cmake command over three separate ones. This is the advised way to do it, assuming your source tree does not have any CMakeCache. Visual Studio Generators. Refer to target_link_libraries libs either by CMake target name, if the lib is built as a CMake target via add_library, or by full path to the library file otherwise. That way, you can control the version In a fist step I have done separate CMakelists for each module. txt - tools Compiles fine. You can then run cmake -DCMAKE_BUILD_TYPE The mixed approach is by far the worst of these. I am rewriting some build system for a larger project. This has already been done with several projects. In practice you need to set up multiple build directories and configure/build with CMake for each and every one. txt, I would put the conan invocation cmake code in its separate conan_install. Modified 2 years, 2 months ago. The individual applications need to know about the parent project structure they are embedded in via the add_subdirectory(. 2 in this case. I've had to check these in complex project, which inherited flags/linked-stuff from upstream projects. Then use the library for the A executable target too. Ask Question Asked 7 years, 2 months ago. 8 Multiple CMake Projects in one CMakeLists. txt distributed over your lib1, lib2 and lib3 directories and use a root cmakelists. Here is what a simple top-level CMake file for your situation might look like: Basic CMake usage ¶. I had a look at the cmake documentation for the project command, and it says that the project command does this:. This section explains basic aspects of CMake which you may need in your day-to-day usage. Instead create a super-project which does all the add_subdirectory() at the same level (in the same CMakeLists. txt is just too messy, and I don't know enough about CMake. Have a CMakeLists. CMake: include libraries in the project I have a C++ project using CMake. You can use preprocessor macros to conditionally compile the main function in A. txt files to each exe folder and then just INCLUDE each of these. Much of my C++ career took place in Microsoft’s Visual Studio on Windows, so I am mainly used to the IDE maintaining the build system and relying on a Next message: [CMake] cmake and multiple projects, targets and versions Messages sorted by: Hi cmake list! I've been playing around with cmake for a couple of weeks now, and am loving (almost) every minute of it. txt │ │ ├─ BootInfo. 0 multiple source building in cmake. If you want to be able to run separately both from project1 and project2, and also from the root CMakeLists. 22. I would like to have a master project defined in CMake that will build both A and B (and maybe a hundred other things eventually). txt files to a different one - either create a sudirectory for the subproject, or create a separate directory for This question is about the project command and, by extension, what the concept of a project means in cmake. cmake [cmake flags like -DCMAKE_BUILD_TYPE=Release and others] path/to/the/MyProject CMake then creates all required Makefile-s and other build artifacts in this directory and you may call make (or ninja if you've chosen to use ninja instead of make ) and all build artifacts would reside in that directory, reproducing the original structure of Another (arguably better for big code bases) variant is to use a separate CMakeLists. [4]As a meta-build tool, CMake configures native build tools which in turn build the codebase. See PR #1374. For example: I would like to make some smaller self-contained sub-sets of functionality which would ommit I'm looking for a way to share CMake scripts between multiple projects. If you use add_subdirectory , you will be creating a new scope for variables, while with include , variables will be declared in the current scope. txt file? 0 How can I define to libraries in the same CMakeLists. The structure is: -Folder 1 - CmakeList. I have two projects called A and B that have complete working CMakeLists. CMake has some special variables that are either created behind the scenes or have meaning to CMake when set by project code. cpp -- Memory. CMake is a build script builder. user3159253 Dividing a CMakeLists file into multiple projects. txt which is located in the modcam As far as I know, you can't have two CMake projects in the same directory. txt scav---|bin (the directory which is expected to contain the binary files of my three modules |build (the directory from wich I launch As far as I can see, you do not have or want multiple CMake projects. cmake/packages. All of them are configured and built (in their own build root folder) when that configuration is selected. So Project is the default project's name. txt - 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 Here is one solution. So, if library locations vary by platform you will need conditional logic based on your platform. It generate a Visual Studio Solution (. txt have been processed. h source1. add_subdirectory(A build-A) Based on ConsistentProgrammer's answer: you can create two variables that will hold the file lists. I am trying to set up a new project which is pretty small at the moment. When you build the library project first the application projects should be able to find I'd like to configure my CMake project in a way, so that a single build execution targets multiple platforms (in my case I'd like to build for Linux and Windows, x86_32 and x86_64 targets each). deb, projectname-data. Consider this basic code: When you're using ExternalProject_Add, you can't use find_package, since there's nothing to find when CMake runs to configure the outer project. Improve this answer. The structure is as follows: Root/ ├─ Kernel/ │ ├─ CMakeLists. cppm │ ├─ Graphics/ │ │ ├─ CMakeLists. CMake - Adding dependencies to other projects. Not all packages are CMake-aware. com Fri Apr 27 22:42:38 EDT 2018. - CMake on multiple platforms · Workflow runs · Object library is probably the way to go, but it typically requires a significant overhaul to the CMake projects you are trying to combine. Thus they will compile only A. txt projects, and each project can be built completely without errors. sourceDirectory since version 1. cpp files more or less related together as follows: root - memory -- Memory. txt <--- Top-level CMakeLists. If I inform CMake to export the compile commands by adding the following line to the CMakeLists. For example to build modcam I have written the following CMakeLists. For such cases, a Find module file can be provided separately, either by the project or by CMake. each module is configured right I usually have a policy in my project, to never create lines in text files that exceed a line length of 80, so they are easily editable in all kinds of editors (you know the deal). Contribute to KevinWMatthews/cmake-multiple_projects development by creating an account on GitHub. Example. You just have multiple CMake targets (multiple Visual Studio projects under one single Visual Studio solution (one single CMake project)). It runs on a variety of platforms and supports many programming languages. Many don't provide the files needed to support config mode. ), they'd just be a way of My C++ project is very large and results in 5 different binaries to be generated. Let’s get started with an example: We are going to create a string compressor application that uses one of the most popular C++ libraries: Zlib. CMake: include libraries in the project Besides, I still need to locate the header files to compile projects that use those tools. json file and create a launch configuration for each of your targets. You might wonder why CMake decided to have its own language instead of using an existing one such Instead you should use a more highly structured method of organizing platform specific code to avoid problems as the project grows larger. txt at the root of the application folder: Working with Multiple Projects in CMake. So, it will not make build commands for header files. CMakeLists configuration to link two C++ projects. txt file to tie all the projects together. make and link. Commented Sep 14, 2020 at 6:52. \build, I can see in the Solution Explorer projects ALL_BUILD, RUN_TESTS, and ZERO_CHECK under CMakePredefinedTargets, Continuous, Experimental, Nightly, and NightlyMemoryCheck under CTestDashboardTargets and MyProject (which is my You can have as many projects in a single cmake as you want. You could split up your project into multiple CMakeLists. g. You can use a top-level CMakeLists. Hot Network Questions On The goal of this repository is to demonstrate how a cmake project can create multiple executables for different platforms, and test the consistency of the code generated for each platform. CMake multiple projects using same library. This release includes two of the extension’s top feature requests: file-based API support and multi-root workspaces. Autotools can do static and shared builds of libraries. The idea is to try and help understand exactly what each part of a CMakeLists. My first thought was to use the CMake import/export target feature. All whose steps are going to be performed at the build time. Though, as mentioned above, my workspace does include both folders. 17. – starball. Rather than relying on variables to convey information in a project, A clear and concise description of what the bug is, including information about the workspace (i. maciel at gmail. Here is a list of popular open source projects using CMake for build purposes: OpenCV For CMake, many developers prefer to create a build folder under root tree and start CMake command inside Next message: [CMake] cmake and multiple projects, targets and versions Messages sorted by: Hi cmake list! I've been playing around with cmake for a couple of weeks now, and am loving (almost) every minute of it. See this question and answer for a similar scenario which I've been using successfully in a couple of real world projects for some time now. Project A build a static library that is then linked to project B. Set a name, version, and enable I have a Visual Studio 2010 solution with 5 projects in it, two libraries and three applications (that depend on the libraries). The presets documentation makes clear the behavior with the following statement: If multiple inherits presets provide conflicting values for the same field, the earlier preset in the inherits array will be preferred. CMake - BUILD_SHARED_LIBS for single libraries. CMake’s ExternalProject module is sometimes used to create a superbuild, where components of a software or its external dependencies are compiled separately. If you want to build multiple projects in a single commandline invokation, you either need to make them all part of the same generated buildsystem, or use the ExternalProject module, or write a wrapper script that invokes multiple buildsystems for you. I use CMake to build the code on Linux. The CMake's ExternalProject allows to define how to an external project is going to be downloaded, configured, built and installed. CMake one build directory for multiple projects. 16 How to set include_directories from a CMakeLists. cpp -- CMakeLists. 6. Xcode. Additionally, both projects are built using CMake, and Project A should not need to be installed (via the 'install' target) in order for Project B to use it, as this can become a nuisance to developers. > > The applications are composed of multiple executables and shared libraries. It can be done by executing configure command through cmake (cmake --help) command mode:-E = CMake command mode. I'm aware of the fact that MSVC is a multi-configuration environment, hence CMAKE_BUILD_TYPE is not used, instead it uses the CMAKE_CONFIGURATION_TYPES set to build every possible configuration. Give Visual Studio a few moments to create the project and populate the Solution Explorer. Compiling and linking subproject library with CMake. A single CMake project can only handle one architecture at a time, but you can make two CMake projects and build them both in one superproject with ExternalProject_Add I am trying to build a big project with CMake but I struggle on how to write the CMakeList. Add a How do I properly import, into a parent CMake project, a Protobuf-generated . If you want to include Project A's import file, you'll have to install Project A manually before invoking Project B's Overview . We’ll use CMake as build system in this case but keep in mind that Conan works with any build system and is not limited to using CMake. (each projects has it’s config/build/install) Now I want to integrate all projects by using Building in multiple directories. /common common) calls. How to build static and shared library at the same time through cmake. cmake is used to configure your project for different configurations. On Linux this directory is /usr/share/cmake/Modules. As far as I know, in general, a single generated single-config buildsystem can only have one CMake Multi-Project Template With Library, App, Tests. 63. txt with add_subdirectory. Share. Projects are: lib. 1. txt file for a project must contain a literal, direct call to the project() command If no such call exists CMake will implicitly add one to the top that enables the default languages (C and CXX). Show how to Testing different project structures with CMake. How to structure a cmake project with different 3rd-party libraries. Viewed 2k times 1 In my team we made some applications using C++ as main language and when a new project arrives we always end in copy-pasting other project's files when needed . Ask Question Asked 11 years, 3 months ago. With the advent of CMake 3. ) Point 4 - Now I have a comparitively bigger project (developed in eclipse for whatever reason). My recommendation in this case is to make X and Y independent as well, creating your own FindX. CMake with subdirectories. include ( ExternalProject ) For a simplified example we imagine 2 projects A and B, A depending on B. 1 The February 2020 update of the Visual Studio Code CMake Tools extension is now available. txt and two . This essentially creates bidirectional dependencies where neither the "individual" projects nor the parent project can be built without coupling them CMake: Static library with multiple projects. 5. – KamilCuk. Hierarchical CMake project that also works when Configuring a CMake project with dependencies on multiple other CMAKE projects. CMake is a free, cross-platform, software development tool for building applications via compiler-independent instructions. txt: I have a CMake question for anyone who uses CMake to cross compile for multiple targets. – CraigDavid. txt per sub-directory. 4. My project consists of the Engine(executable), the Editor(library), and some tests/examples. There is one thing that I am not sure about – basically, Added in version 3. How to link statically two subprojects with main project when subrojects call dynamically libraries. Commented Apr 1, 2023 at 0:16. This essentially creates bidirectional dependencies where neither the "individual" projects nor the parent project can be built without coupling them Just look into cmake output. Stack Overflow. A thing I really like about cmake and that I feel will add the greatest value for me, besides the cross-platform capabilities, is the One straight-forward solution is to create a top-level CMake with some CMake options to give you some control over what is included in your overall project. When you build the library project first the application projects should be able to find Yes: CLion doesn't allow you to open multiple projects from the menu because it uses the CMake system, which is script based. My projects declare "somelib" as an external dependency like so : You cannot have multiple subdirectories use the same build directory, but that doesn't seem what you're trying to achieve. I could call cmake from make, but that looks rather Just look into cmake output. I have a CMake question for anyone who uses CMake to cross compile for multiple targets. 18. A thing I really like about cmake and that I feel will add the greatest value for me, besides the cross-platform capabilities, is the Do not do add_subdirectory() in cmake-projects which are likely to be used as sub-directories itself. And I would like to automate it as much as I can. 0 Including Protobuf 3. Build twice same library. Some ROS build systems (catkin_tools, catkin_make_isolated) Basic Intuition. The source files for the library are passed as an argument to add_library(). cmake files that can be used, and build the libraries independently, and then build and install each library separately In my CMake project I have two 3rd party libraries which are required. An external application is tasked with building, and currently does so by calling cmake --build . txt. CMake comes with extensive documentation, in the form of html files, and as online help accessible via the cmake executable itself. INCLUDE runs the commands inline, so there's no need for these subordinate CMakeLists. Create a CMake project. txt, I have a working implementation and would like to improve and enhance it, problem described below: If I want root/sub-directories/ as separate sub-projects that can be compiled using the individual CMakeLists. Add a CMake: Set up Multiple Projects and Dependencies Between Them. Though it must be noted that CMakeCache. Ask Question Asked 9 years, 9 months ago. Your cmake project template looks fine and self-contained. – If you want to be able to build libB using only the libB build script you need a way of making libB able to find the libA dependency. hpp and . Multi-root workspace support The latest release of the CMake [] Previous message: [CMake] Working with Multiple Projects Next message: [CMake] Reading DartConfiguration. This tutorial uses the Bullet Physics SDK on GitHub. However, CMake is quite capable of encompassing multiple projects, and CLion will correctly parse your CMake file and show all relevant directories in the project explorer. Multi-Project cmake not working. So in your directory structure, this would be placed here: bin/ output/ src/libA/ src/libB/ src/appB/ CMakeLists. txt that references those. As far as I know, in general, a single generated single-config buildsystem can only have one If you have one project, I would add the conan invocation code in the root CMakeLists. My project is separated in different folders each containing a set of . CMake generates configuration From a plain CMake perspective -- so I have no idea how this interacts with CLion, but you indicate in comments that writing-the-CMakeLists. Link two dependent projects with CMake. The problem is that the second one requires the first one to be build first. have you used CMake at all before? If you haven't, I was misled by your second sentence to CMake: Static library with multiple projects. This works. txt file and then run your cmake configure step in a build directory (i To summarize: I will have 3 projects that will have multiple executables. In the above case, those pieces are not there, because when opt was compiled, it I am working on an open source C++ project, for code that compiles on Linux and Windows. The project is supposed to run on different embedded Linux systems each with its own toolchain and also has quite a few different configuration options per target (e. Thinking on this more, I realize I would like a link_libraries function that One straight-forward solution is to create a top-level CMake with some CMake options to give you some control over what is included in your overall project. Then I run into the following problem: find_library(A) won't work until I've actually built A, so I can't cmake CommonTools (because Tool B requires Tool A). > > I would like to use CMake to handle the build project of I am changing from plain make to CMake as a build system for a project. , I had concluded that CMake was going to be where any initial efforts would take place. If you want to include Project A's import file, you'll have to install Project A manually before invoking Project B's The problem I would like to update the compiler of multiple C++ projects. I work on a software package that contains > 10 project commands and there never was an issue with that. Multiple CMakeLists 2. 0. cmake: how to reference and build separate cmake project dependency? 2. It uses CMake build system and is deliberately completely minimal. Hot Network Questions On I've spent an entire full-time work week researching CMake, and it seems the only way to get CMake to generate a VS solution that has all the proper dependent projects inside it is to use the add_subdirectory command for each dependency. Cmake project with dependency on cmake project. 4 Methods to combine one project into another. CMake: Set up Multiple Projects and Dependencies Between Them. Working with Multiple Projects in CMake. In my previous article on Build Systems for Embedded Development: From 30000 feet. In a repo called somelib I have a cmake folder, and from the other projects I want to include the scripts in it. Viewed 5k times 2 Ok, it is driving me crazy so I am going to ask you guys for some help. h file created in a dependency CMake project? 5 CMake with protobuf file in subdirectory. But I need to make cmake file for it and thus not use the eclipse for building. txt: Hi, I do have some problems with naming my targets / project. 2 CMake Project Structure: How do I properly merge libraries together and include them in multiple executables. Previous message (by thread): [CMake] Multiple "projects" one directory Next message (by thread): [CMake] Multiple "projects" one directory Messages sorted by: You can solve this by treating those local projects as external projects; then they For CMake most of the project would do a static build, then a shared build by setting the CMake variable BUILD_SHARED_LIBS to ON. Solution¶. ninja that can drive the build for everything. 9. By default CPack will run the install rule for the current project. The CMakeLists files (actually CMakeLists. Execute cmake--help for further help options. If you want, you can add CMakeLists. 13. Viewed 1k times 1 I have a directory containing implementations of some class. We need this because we generate different packages from the same code (a projectname. answered Aug 21, 2015 at 23:22. In the vast majority of cases, you will be faced with projects comprising dozens to All use CMake to build and all live within a single repo. 54 How to include an additional CMakeLists. cpp TEST_SOURCES = run_tests. My top level CMakeLists. The answer is in the project() command documentation:. One containing the main function, and which is used by the A executable target but not the library. Hello, There are multiple independent projects, and i use CMake to build each project. Then select having RTTI generates runtime info symbols, because they are used in your module, but they are not defined there because they are part of the LLVM API which gets compiled and linked against opt, which loads your module and dynamically resolves any missing "pieces". (I don't know protobuf's libraries or structure here, so this is just an example, but it should get you The best practice is obviously not to have multiple version of the same sub-project within your large project And if you really really have to, then ExternalProject is definitely your friend, because you should completely and totally isolate the two different versions of the sub-project, which would not even be close to easy-to-do if you were incorporating sub-projects Unfortunately, the "quick debugging" feature wasn't really designed for frequent switching between targets. 1 CMake with multiple interdependent projects. txt etc in it. My project uses multiple (CMake) libraries, which are added using add_subdirectory and then target_link_libraries. 0 CMake for protobuf library. Multiple CMake Projects in one CMakeLists. In the IoT world, the ability to have code that can target multiple hardware, with different configurations and Hi everybody My project is made of many executable binary files (namely “modules”). Many of these variables start with CMAKE_. 40. Avoid this naming convention when creating variables for your projects. No, that’s not how inherits works for presets. , GNU make, Visual Studio, I came across several SO questions regarding specific aspects of improving the turn-around time of CMake enabled C++ projects lately (like "At what level should I distribute my build process?" or "cmake rebuild_cache for just a subdirectory?"), I was wondering if there is a more general guidance utilizing the specific possibilities CMake offers. txt - tools 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 Two things that sometimes you need to check in the CMakeFiles/target_name. com> wrote: > I'm developing a software package which consists of a GUI application and a > command line program. CMake has two main ways of handling multi-directories projects, the add_subdirectory and include commands. It adds directories for the linker to search for library files. Then select Create. However, I still This project is aimed at jump-starting a C/C++ project that can build libraries, binaries and have a working unit test suite. I would like to perform the configuration step of an external project during configuration of the main project. This is the more reliable method of the two, since the package details should always be in sync with the package. Configure for ARM64 I'm looking for a way to share CMake scripts between multiple projects. Add a comment | 3 I am not sure if this is what suits your need, but cmake also offers INTERFACE libraries, which serve (among others) precisely this need. The examples are laid out in a tutorial like format. CMake build multiple targets in different build directories. Hi, Is there a way to use the same namespace accross multiple packages, like: find_package(prog_extA) find_package(prog_extB) target_link_librairies(target PUBLIC prog::extA prog::extB) Or even, register multiple packages in the same “meta”-package, like: find_package(prog) target_link_librairies(target PUBLIC prog::extA prog::extB) But without the The problem I would like to update the compiler of multiple C++ projects. cpp Except for using clang++, I think if you put the following in a CMakeLists. But with CMake I get the problem that I do not know how to split a simple string into multiple lines to avoid one huge line. A straightforward approach is to add_library(), followed by a sequence of add_executable() (PROJECT_LINK_LIBS, lib1 ), and have CMake remove the extra boilerplate. 64. For the very first project() call only:. I've read those: 1. txt files to be fully standalone (i. 7. 9 How to structure a cmake project with different 3rd-party libraries Set the various project-specific variables detailed in the Synopsis and Options sections above. About; How to structure a cmake project with different 3rd-party libraries. From your question I assume that you actually want to build libA as part of the libB building process (you don't want to install libA before starting the libB build. -B . CMake allows you to specify a build tool (e. txt file does and why it is needed. First of all, Im sorry if this ends in a noob question, but Im getting a grasp with CMake and I cant find the problem here. cpp file2. I see instructions to generate Visual Studio files using CMake, as here. Two of these special user settable variables are CMAKE_CXX_STANDARD and CMAKE_CXX_STANDARD_REQUIRED CMake way to generate multiple projects from common source tree. Select CMake Project > Next; Give the project a name and choose a location. The header list will hold the files in the include directory and it's content will be like this: ". But I am running into a problem where my CMakeLists. My projects declare "somelib" as an external dependency like so : I have a CMake build with a bunch of different targets A, B, C, etc. So instead of calling configure directly we can execute it through cmake command mode with the environment variables:. You can check more examples with other build systems in CMakeLists Files¶. It also can automate testing, packaging and installation. txt │ ├─ BootInfo/ │ │ ├─ CMakeLists. There are a few things that I want to accomplish to prove to myself that CMake can get the job done: Build bare metal binary for several different targets: Besides, I still need to locate the header files to compile projects that use those tools. How can I add the output from project A (the static library) to project B? EDIT: Here is an example of my problem: In most CMake projects, using the CMake install rules will be sufficient to create the desired package. You can debug the targets from all of the CMake projects that participate in that CMake configuration. CMake is a powerful tool but can also be very complicated and daunting when starting out. One containing the foo function, which is used by the A_lib library target. Its a multiple definition error, but as long as I know I have: Included Try to use the newly built Tutorial and ensure that it is still producing accurate square root values. Older answer. For a full list of this release’s improvements check out the release notes on GitHub. 0 Importing two different projects in the same CMakeList file. I could call cmake from make, but that looks rather MyLibrary is the main product but it lives alongside two other projects in our repository, and the layout looks like this: CMake -- Add all sources in subdirectory to cmake project. The mixed approach is by far the worst of these. 1 @KamilCuk: As far as I understand the question, the asker wants to build the same libA/CMakeLists. This fails with ProcessingLib, as it must be built with a different tool chain than the others. Currently my projects therefore have the project name my_project_my_library_name and targets with the same name my_project_my_library_name. For ease of development setup and political reasons, I must stick to Visual Studio project files/editor on Windows (I can't switch to Code::Blocks, for example). @BhavinChirag If A and B are truly independent, then my scheme won't work, as it sees A and B as part of a package, or sub-projects. ExternalProject_Add(project_lib SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib To create a root CMakeList. This project contains multiple directories and multiple CMakeLists. 8. An experimental superbuild of project modules is implemented by the basis_add_module() function. 2. Choose the Select View button on the Solution Explorer toolbar. txt of somelib I include many files from the cmake folder. Real-world projects require more than compiling a few source files into executables and/or libraries. h" I have multiple CMake projects that each create a debian package. Platform specific code should be clearly identified at the file level: For example, use a directory structure with directories for each platform and put all platform specific source files in the appropriate Introduction I’ve been interested for a while on how to optimize builds, and one thing that I thought about is to have a central ninja build. This looks like the following line: TODO 1: Click to show/hide answer If some project needs a module which is absent in cmake installation, the project itself should be shipped with this module. 10. To be precise I have the following structure - I think you're mixing up two different paradigms here. I have been trying to create a top level project that calls add_subdirectory() on each 'child' project. A set of libraries that can be built as standalone libraries. 35 Using cmake to create main and sub-projects, and be able to compile them individually. To do this, just like in Visual Studio, you Multiple CMake Projects in one CMakeLists. 0, also known as Modern CMake, there has been a significant shift in the way the CMake domain-specific language (DSL) is structured. txt at the root of the application folder: Cross-compiling support doesn’t mean that all CMake-based projects can be magically cross-compiled out-of-the-box (some are), but that CMake separates between information about the build platform and target platform and gives the user mechanisms to solve cross-compiling issues without additional requirements such as running virtual machines I am trying to build a big project with CMake but I struggle on how to write the CMakeList. What is the best way to solve these dependencies using CMake? The ideal solution would be as simple as possible (though no simpler) and require Thank you. Using project() for dependent CMake subdirectories. Currently, this is implemented as I have two projects using CMake. Linux/Windows) application which uses also thirdparty libraries as external projects. deb, projectname-dev. Multi-config generators use CMAKE_CONFIGURATION_TYPES as the set of configurations and ignore CMAKE_BUILD_TYPE. 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 . The first examples are very basic and slowly increase in complexity drawing on previous examples to show more complex use cases. This repository includes some example modern CMake configurations which I have picked up when exploring it’s usage for various projects. Commented Mar 25, 2023 at 18:16. Move one of the CMakeLists. Step 01. txt, with all the deps. I have the cross compiler toolchains installed and working, and building for each individual target works. e. Commented Feb 22, 2023 at 17:34. txt -Folder 2 - CmakeList. 3. tcl Messages sorted by: As far as I know, you can't have two CMake projects in the same directory. txt - Most CMake projects advise out of source builds, and assuming you wrote your CMakeLists files correctly you could have ~/src/YourProject, and ~/build/YourProject-Release, ~/build/YourProject-Debug. cmake and FindY. – Once CMake cache generation has succeeded, you can also view your projects organized logically by targets. Simple right-click on the project node in Solution Explorer and select “Launch CMake Debugger” to step through the CMake scripts, set breakpoints and evaluate CMake-level variables: Note that the same Advanced CMake Project can cover multiple CMakeLists. txt is the important bits -- one way to do it is this:have a top-level CMakeLists. CMake Tools supports an array of directories in cmake. txt that add_subdirectorys add/ and print/, then you can consider using VS Code's multi-root workspace feature, which the vscode-cmake-tools extension supports. txt and all cpp and header files of the lib lib2/CMakeLists. Here is my file structure: Additionally, both projects are built using CMake, and Project A should not need to be installed (via the 'install' target) in order for Project B to use it, as this can become a nuisance to developers. First, I'm going to assume GAITPARAMS_SRCS was supposed to be PROJEXEC_SRCS which is currently pointing at proj_exec. The way to specify the binary directory is to run CMake in that directory (when running from the command line), or set that directory as the binary/output directory (when using a CMake GUI). The only way to do this today is to write a launch. I'd like > to keep it all within a single repository. It seems like the topic has been discussed before, both on the Ninja’s GitHub Issues page and on the maillist here, and the conclusion was that it’s not possible. Create build tree for different build types with CMake. Best way to add include directories of root project to a subdirectory in CMake. Hey there. txt │ │ ├─ FrameBuffer. txt lib1/CMakeLists. However, if you have a more complicated project, you can specify sub-projects and install directories with the variable CPACK_INSTALL_CMAKE_PROJECTS. On the Windows host machine: Run Visual Studio; From the main menu, select File > New > Project. I'm starting to have some problems with heaving everything in one cmake project. 9 How to structure a cmake project with different 3rd-party libraries. . txt). And from that point onward CMake generates a Hi, On Sun, Oct 28, 2012 at 10:09 PM, Rui Maciel <rui. CMake script and directory structure for multiple nested projects and libraries. 00: Createa a top-level container project. If the package location is specified on the command line, e. cmake file, and call (target_)link_directories() should only be used in rare circumstances. Assuming you don't set the variable CMAKE_RUNTIME_OUTPUT_DIRECTORY anywhere in your project, and you don't specify the RUNTIME_OUTPUT_DIRECTORY target property for any of your targets by some other I'd like to configure my CMake project in a way, so that a single build execution targets multiple platforms (in my case I'd like to build for Linux and Windows, x86_32 and x86_64 targets each). CMake linking libraries into one single library. Cmake building two projects. Follow edited Aug 21, 2015 at 23:36. This is even true for e. txt for each sub-directory where you isolate adding sources of the directory to a target using target_sources and maybe some particular configuration settings \ include conditions for those sources:. txt in your project's root. These options will populate and can be changed in the CMake GUI, but can also be controlled if running cmake from the command line. How to setup cmake for a project with several modules including unit test etc. Hey everyone ! I wanted to try C++ modules on a project I’m working on. In my project I have a makefile that looks like this: CXX = clang++ CFLAGS = -std=c++11 COMMON_SOURCES = file1. cc contains a main() method. the top-level CMake should be able to link all the targets together without producing any executable or library file, only generating any project type with the correct structure/tree. It provides collision detection and physics simulations for many applications. txt, which includes all sub-projects/modules is the way-to-go with CMake. There is a good reason to generate C# projects by CMake. A tutorial on how to set up a CMake multi-project including a C++ library, an application, and tests with Googletest. You could then use the CMake export feature to export those targets and the application projects could then import the CMake targets. Build the target with CMake Tools Extension which makes VSCode to run the command : cmake --build <PROJECT_DIR>/build --config Release --target HelloCMake -- /maxcpucount:14 The entire target is compiled There are many, many examples out there of how to structure CMake projects for C++, many of which are referenced by the tutorial @user2485710 suggested in his comment, so I'm not going to go super in-depth here, but I'll at least give you a good starting point based on the way you want to lay out you folder structure. In the IoT world, the ability to have code that can If you want to use two compilers, you need to run CMake twice. cmake subproject dependency. cppm Split A into two source files:. txt in a project. target_sources( SomeExeOrLib PRIVATE source1. they don't need the PROJECT command, etc. Thanks for the reply, I tried to add the launch. txt but it is common to leave off the extension) are plain text files that contain the project description in CMake’s Language. I would now like to migrate the build system to CMake (to also be able to compile under Linux). You can then run cmake -DCMAKE_BUILD_TYPE That did not seem to make a difference for me yet as I could not figure out a way to tell CMake Tools about multiple directories. 1 How to manage multiple build configurations with cmake Read-only property that is true on multi-configuration generators. In XCode for example, my single project has 5 different targets. 3 This repository is a collection of as simple as possible CMake projects (with a focus on installing). It is disabled by default, i. I think there is a Tool Window in CLion, where you can see all your targets and compile each independently (similar to the Maven Tool-Window in IntelliJ). April 2023 Robert Lohr Leave a comment. 2 CMakeLists. And the exported / alias name is then: Clone an open-source CMake project from GitHub. The problem is, when I change a source file from project A and build both projects, project B won't automatically be linked again. So you need "external" place to store the configurations for current project; I have multiple applications and multiple boards, the chosen application configuration options are stored inside a Multiple CMake projects might use the same CMake configuration name (for example, x86-Debug). different preprocessor definitions and some sources included/excluded). In VStudio for example, my single solution has 5 different "projects". txt file and set include directories separately for each? I am using CMake to build a cross-platform (e. Combining several static libraries into one using CMake. h", ". However, we set (cmake_module_path "${project_source_dir}/cmake" ${cmake_module_path}) Your extern folder should contain git submodules almost exclusively. DISCLAIMER: I am new to CMakeLists. In the CMakeLists. For linking targets built by the same project, this is unnecessary; for external projects that provide an I came across several SO questions regarding specific aspects of improving the turn-around time of CMake enabled C++ projects lately (like "At what level should I distribute my build process?" or "cmake rebuild_cache for just a subdirectory?"), I was wondering if there is a more general guidance utilizing the specific possibilities CMake offers. With the technique presented here CMake can easily do multiple configuration Cmake - Library with multiple projects. As a workaround on concrete machine, you may add your Find module to directory with modules installed with CMake itself. When I generate the Visual Studio files using cmake -G "Visual Studio 15" . So I started digging around, and apparently this structure is kept in CMakeLists. This chapter has two main objectives: Demonstrate how to organize the generated documents by CMake for your project using directories. txt files, defining multiple targets. But Qt Creator allow to select which executiable should be run after build of root project: You should add multiple projects to the root cmake file with help of "add_subdirectory()". deb). txt file in the MathFunctions directory, we create a library target called MathFunctions with add_library(). If you have mixed native + C++/CLI + C# project with lot of configuration done by CMake, you need the C# project to take the configuration done in CMake into account and refer to the projects generated for C++ and be included in the right solution. cmake file or via CMake package cache, ~/. Build a library and multiple executables with one target name using cmake. Both programs share common libraries, and essentially > they only differ in which UI components each program uses. Module mode. The projects will be u Skip to main content. Create a top-level container project, with the following files: File: CMakeLists. txt Working with Multiple Projects in CMake. Hot Network Questions What is the name of the lady with the white blouse? Map or Thread operation for list Is it necessary to have a hood if soldering with lead-free solder? It's normal to have your main CMakeLists. 0 Consider a project which consists of a library and a set of executable that use that library. -D Create a CMake project. txt which sets up CMake parameters, C++ standards, compiler flags, options, etc. The code is organized in a very deep "src" folder with many many levels of nested sub folders. If CMAKE_TOOLCHAIN_FILE is set, read it at least once. hpp -- MemoryManager. I re-download a seperate copy of my project to a Win10 client, run cmake-gui, and open the project: My folder structure in the solution explorer all gone. CLion Multi-Module CMake Project. So cmake does not store a configuration, it is used to choose a configuration. 0 as a CMake subdirectory. I could use find_library to locate them. txt an Basic Intuition. CMake use a different file than CMakeLists. 44. the target1 needs to have a library/object file from target2 so it can be compiled. for version 2. This is basically intended as a series of reminders to help me remember how to use CMake 🤦 The ci-darwin (Release build) should be overwritten by coverage-darwin!. My current directory structure is as follows : scav is the name of the toplevel directory It contains the directories src, bin, build and a CMakeLists. This probably has no practical meaning if the projects are found with Find*. Here is what a simple top-level CMake file for your situation might look like: I've got a > CMake project that is composed of two separate applications - let's call > them system and recovery - that share a common library framework. For CMake most of the project would do a static Learn how to handle multiple targets in one project. txt, which some people may prefer when the projects are simple. How to create dependencies in CMake. /include/foo. cpp TARGET_SOURCES = main. @Bill's answer recommending ExternalProject To summarize: I will have 3 projects that will have multiple executables. There is a wide range of configuration options that modify the You can solve this by treating those local projects as external projects; then they can be built with independant flags. The visual studio generator creates one solution file per project() though but a unnecessary files in the build directory shouldn't be an issue. That did not seem to make a difference for me yet as I could not figure out a way to tell CMake Tools about multiple directories. So I start adding more source_groupings to my cmake lists Here is one solution. True when using a multi-configuration generator such as: Ninja Multi-Config. cpp. txt file. txt for basic, io and web and one CMakeLists. Most CMake projects advise out of source builds, and assuming you wrote your CMakeLists files correctly you could have ~/src/YourProject, and ~/build/YourProject-Release, ~/build/YourProject-Debug. How do you structure your project, including Toolchain files so that: CMake compiler detection works Custom or various techniques and styles for organizing projects that compile for multiple targets – Isaac. All child projects build but 'make project' creates a project with the last child project's specifications and includes the files from all of the other projects. sln). 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. bif ees xeqiz unk btsdo iraxhhc oinqu ftn gsrfn hwulzn