![]() You can modify this behavior by selecting Never run configure step automatically in Tools > Options > CMake > General. Modify automatic configuration and cache notificationsīy default, Visual Studio automatically invokes configure each time the active Target System or Configure Preset changes. In the table, " Tools > Options enabled" means Use CMakePresets.json to drive CMake configure, build, and test is selected in Tools > Options > CMake > General. If no configuration file is present, default Configure Presets are used. The following table indicates when CMakePresets.json is used instead of CMakeSettings.json to drive CMake configuration and build in Visual Studio 2022 and Visual Studio 2019 version 16.10 and later. In some older versions of Visual Studio, Tools > Options > CMake > General only has a single option to enable CMakePresets.json integration: You can enable it in Tools > Options > CMake > General:Ĭlose and reopen the folder in Visual Studio to activate the integration. Enable CMakePresets.json integration in Visual StudioĬMakePresets.json integration isn't enabled by default in Visual Studio. We recommend using CMake version 3.14 or later. So, CMake version 3.20 or later isn't strictly required when you're building with CMakePresets.json inside Visual Studio. However, Visual Studio reads and evaluates CMakePresets.json and CMakeUserPresets.json itself and doesn't invoke CMake directly with the -preset option. For an example and more information, see CMakePresets.json format.ĬMake version 3.20 or later is required when you're invoking CMake with CMakePresets.json (version 2 or later) from the command line. You can update your file version by incrementing the version field in the root object. Visual Studio supports version 2 or later for the CMakePresets.json and CMakeUserPresets.json files. Supported CMake and CMakePresets.json versions To enable or disable CMakePresets.json integration in Visual Studio, see Enable CMakePresets.json in Visual Studio 2019. Visual Studio never reads from both CMakePresets.json and CMakeSettings.json at the same time. We recommend CMakePresets.json as an alternative to CMakeSettings.json. For more information about how to use CMakePresets.json in Visual Studio Code, see Configure and build with CMake Presets.For more information about the Microsoft vendor maps and macro expansion, see CMakePresets.json and CMakeUserPresets.json Microsoft vendor maps.For more information about the format of CMakePresets.json, see the official CMake documentation. ![]() This article contains information about CMakePresets.json integration with Visual Studio. Both files are supported in Visual Studio 2019 version 16.10 or later. CMakeUserPresets.json is for developers to save their own local builds. Use these files to drive CMake in Visual Studio and Visual Studio Code, in a continuous integration (CI) pipeline, and from the command line.ĬMakePresets.json is for saving project-wide builds. Here LIB_A_PATH is created as a cached variable.CMake supports two files that allow users to specify common configure, build, and test options and share them with others: CMakePresets.json and CMakeUserPresets.json. ![]() In the GUI the user first starts the configuration process, then can modify any cached value and finishes with starting the build environment generation.Īdditionally CMake does cache search/test/compiler identification results (so it does not need to do it again whenever re-running the configuration/generation steps) find_path(LIB_A_PATH libA.a PATHS "/some/default/path") This does pre-set this value in the cache and the above line will not modify it. option:ĬMakeLists.txt / MyToolchain.cmake set(LIB_A_PATH "/some/default/path" CACHE PATH "Path to lib A")Ĭommand Line $ cmake -D LIB_A_PATH:PATH="/some/other/path". with the cmakegui, ccmake or with cmake -D. There are typically two use cases (please don't misuse them for global variables):Īn value in your code should be modifiable from your project's user e.g. Note: The FORCE option does also unset/remove the normal variable from the current scope. Set(VAR "CACHED" CACHE STRING "A test" FORCE) Set(VAR "CACHED-init" CACHE STRING "A test") And if normal and cached variables of the same name exist in the current scope, normal variables do hide the cached ones: cmake_minimum_required(VERSION 2.4) Mostly you will use "normal variables": set(VAR TRUE)īut CMake does also know global "cached variables" (persisted in CMakeCache.txt).
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