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https://github.com/cpm-cmake/CPM.cmake.git
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52 lines
2.2 KiB
Markdown
52 lines
2.2 KiB
Markdown
[](https://travis-ci.com/TheLartians/CPM)
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# CPM
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CPM is a minimalistic package manager written in Cmake using `find_package` and `FetchContent` as a fallback to download non locally installed packages.
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# Usage
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To add a new dependency to your project simply add the Projects target name, the git URL and the version. If the git tag for this version does not match the pattern `v$VERSION`, then the exact branch or tag can be specified with the `GIT_TAG` argument. CMake options can also be supplied with the package.
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```cmake
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cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
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project(MyProject)
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# add dependencies
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include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/CPM.cmake)
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CPMAddPackage(
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NAME LarsParser
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GIT_REPOSITORY https://github.com/TheLartians/Parser.git
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VERSION 1.8
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OPTIONS
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"LARS_PARSER_BUILD_GLUE_EXTENSION ON"
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)
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# add executable
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set (CMAKE_CXX_STANDARD 17)
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add_executable(my-project my-project.cpp)
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target_link_libraries(my-project LarsParser)
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```
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# Adding CPM
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To add CPM to your current project, simply include add `cmake/CPM.cmake` to your projects `cmake` directory. The command below will perform this automatically.
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```bash
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wget -O cmake/CPM.cmake https://raw.githubusercontent.com/TheLartians/CPM/master/cmake/CPM.cmake
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```
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# Advantages
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- **Auto handle dependencies** Users of your projects do not need to worry about dependencies, everything is handled automatically.
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- **Reproducable builds** Using git tags it is ensured that a project will always be in the same state everywhere.
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- **No installation required** No need to install any third-party package managers. Just copy the files from the CMake directory and you're good to go.
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- **Cross-Plattform** As CPM adds projects as cmake subdirectories, it is compatible with all cmake toolchains and generators.
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# Limitations
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- **First version used** In diamond-shaped dependency graphs (e.g. `A` depends on `C`(v1.1) and `A` depends on `B` depends on `C`(v1.2)) the first added dependency will be used (in this case `C`@1.1).
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- **No auto-update** To update a dependency, version numbers or git tags in the cmake scripts must be adapted manually.
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