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.jekyll-metadata
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---
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layout: page
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title: cmake.toml
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permalink: /cmake-toml/
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nav_order: 3
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---
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# cmake.toml
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This page is supposed to be a reference for the options in the `cmake.toml` file. If you think anything is missing or unclear, please [edit this page](https://github.com/build-cpp/cmkr/edit/main/docs/cmake-toml.md) or open an [issue](https://github.com/build-cpp/cmkr/issues).
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See the [examples](/examples) section for more real-world examples.
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## CMake configuration
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```toml
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[cmake]
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version = "3.15"
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cmkr-include = "cmkr.cmake"
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```
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## Project configuration
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```toml
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[project]
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name = "myproject"
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version = "1.0.0"
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description = "Description of the project"
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languages = ["C", "CXX"]
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cmake-before = """
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message(STATUS "CMake injected before the project() call")
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"""
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cmake-after = """
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message(STATUS "CMake injected after the project() call")
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"""
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include-before = ["cmake/before-project.cmake"]
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include-after = ["cmake/after-project.cmake"]
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```
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## Conditions
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```toml
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[conditions]
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arch64 = "CMAKE_SIZEOF_VOID_P EQUALS 8"
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arch32 = "CMAKE_SIZEOF_VOID_P EQUALS 4"
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```
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## Subdirectories
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```toml
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[subdir.mysubdir]
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condition = "linux"
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cmake-before = """
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message(STATUS "CMake injected before the add_subdirectory() call"
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"""
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cmake-after = """
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message(STATUS "CMake injected after the add_subdirectory() call")
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"""
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include-before = ["cmake/before-subdir.cmake"]
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include-after = ["cmake/after-subdir.cmake"]
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```
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## Vcpkg
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```toml
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[vcpkg]
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version = "2021.05.12"
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url = "https://github.com/microsoft/vcpkg/archive/refs/tags/2021.05.12.tar.gz"
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packages = ["fmt", "zlib"]
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```
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The vcpkg `version` will automatically generate the `url` from the official repository. For a custom registry you can specify your own `url` (and omit the `version`).
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## Packages
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```toml
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[find-package]
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mypackage = { version = "1.0", required = true, config = true, components = ["mycomponent"] }
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# Alternative syntax
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[find-package.mypackage]
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version = "1.0"
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required = true
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config = true
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components = ["mycomponent"]
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```
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## FetchContent
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**Note**: The `[fetch-content]` feature is unpolished and will likely change in a future release.
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```toml
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[fetch-content]
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gitcontent = { git = "https://github.com/myuser/gitcontent", tag = "v0.1" }
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svncontent = { svn = "https://svn-host.com/url", rev = "svn_rev" }
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urlcontent = { url = "https://content-host.com/urlcontent.zip", hash = "123123123123" }
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# Alternative syntax
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[fetch-content.gitcontent]
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git = "https://github.com/myuser/gitcontent"
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tag = "v0.1"
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```
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## Targets
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```toml
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[target.mytarget]
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condition = "linux"
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alias = "mytarget::mytarget"
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type = "static" # executable, library, shared, static, interface, custom
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headers = ["src/mytarget.h"]
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sources = ["src/mytarget.cpp"]
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# The keys below match the target_xxx CMake commands
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# Keys prefixed with private- will get PRIVATE visibility
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compile-definitions = [""]
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private-compile-definitions = [""]
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compile-features = [""]
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private-compile-features = [""]
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compile-options = [""]
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private-compile-options = [""]
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include-directories = [""]
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private-include-directories = [""]
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link-directories = [""]
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private-link-directories = [""]
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link-libraries = [""]
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private-link-libraries = [""]
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link-options = [""]
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private-link-options = [""]
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precompile-headers = [""]
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private-precompile-headers = [""]
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cmake-before = """
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message(STATUS "CMake injected before the target")
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"""
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cmake-after = """
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message(STATUS "CMake injected after the target")
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"""
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include-before = "cmake/target-before.cmake"
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include-after = "cmake/target-after.cmake"
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# See https://cmake.org/cmake/help/latest/manual/cmake-properties.7.html#properties-on-targets for a list of target properties
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[target.mytarget.properties]
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CXX_STANDARD = 17
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CXX_STANDARD_REQUIRED = true
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FOLDER = "MyFolder"
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```
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## Tests and installation (unfinished)
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**Note**: The `[[test]]` and `[[install]]` are unfinished features and will likely change in a future release.
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```toml
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# You can declare as many as you want like this, but the name has to be unique
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[[test]]
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name = "mytest"
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command = "$<TARGET_FILE:mytest>"
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arguments = ["arg1", "arg2"]
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configurations = ["Debug", "Release", "RelWithDebInfo", "MinSizeRelease"]
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working-directory = "mytest-dir"
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```
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```toml
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[[install]]
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targets = ["mytarget", "mytest"]
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destination = ["bin"]
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files = ["content/my.png"]
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dirs = [""]
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configs = [""]
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```
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