Easy to use, fast, git sourced based, C/C++ package manager.

• No need to install a program, just include the cmake file
• Can specify other libraries not in default package remote
• Package code is in project directory making it easily accessible
• Able to specify any git tag, commit or branch of the package
• Only fetches required files unlike getting source which takes less time and bandwidth to get packages

• Python >= 3.6
• Cmake >= 3.12
• Git >= 2.27

See example for a full example.

In the project directory create a yacpm.json file and add the required packages in the packages field as an object with the key being the package name and value being the version (commit hash/tag/branch of repository) or an object having the version field:

{
    "packages": {
        "glfw": "3.3.4",
        "entt": "5b4ff74674063cdbc82a62ade4f5561061444013",
        "imgui": {
            "version": "docking"
        }
    }
}

If a branch is specified, it will be automatically converted to a commit hash (to prevent code from suddenly breaking) unless there's a + at the front. For example, master will be converted to 3f786850e387550fdab836ed7e6dc881de23001b but not +master. If the version is an empty string yacpm will use the default branch of the repository which will then be converted and saved as a commit. Setting the version to just + will write + plus the default branch and setting ++ will use the default branch without saving the default branch.

Now add this to the top level CMakeLists.txt:

if(NOT EXISTS "${CMAKE_BINARY_DIR}/yacpm.cmake")
    # Uses v3 of yacpm, where each vN is a new major version
    file(DOWNLOAD "https://github.com/Calbabreaker/yacpm/raw/v3/yacpm.cmake" "${CMAKE_BINARY_DIR}/yacpm.cmake")
endif()

include(${CMAKE_BINARY_DIR}/yacpm.cmake)

Now use the library in the project as a target (include directories are automatically set):

# all of them in yacpm.json
target_link_libraries(${PROJECT_NAME} PRIVATE ${YACPM_PACKAGES})

# only specific ones
target_link_libraries(${PROJECT_NAME} PRIVATE glfw imgui)

Then run cmake:

mkdir build
cd build
cmake ..

Yacpm will download the package metadata (yacpkg.json and CMakeLists.txt) and the package code using git sparse-checkout putting it all into a folder named the package name in yacpkgs/.

You can also include or ignore other folders from being fetched (as an array in gitignore syntax).

{
    "packages": {
        "imgui": {
            "version": "docking",
            "include": ["/backends", "!/backends/imgui_impl_dx9.*"]
        }
    }
}

Set the repository and cmake (a file relative to yacpm.json or url) fields to override the repository and CMakeLists.txt in the default remote. Use both of those fields to use a library that doesn't exist in the default remote like so:

{
    "packages": {
        "weird-library": {
            "version": "c8fed00eb2e87f1cee8e90ebbe870c190ac3848c",
            "repository": "https://github.com/RandomUser/weird-library",
            "cmake": "lib/weird-library.cmake",
            "include": ["/src", "/include"]
        }
    }
}

You can also configure the package by setting cmake variables (useing CACHE FORCE except for BUILD_SHARED_LIBS and CMAKE_BUILD_TYPE) by having a variables object like this (this is how you configure glad):

{
    "packages": {
        "glad": {
            "version": "71b2aa61f1f0ae94be5f2a7674275966aa15f8ad",
            "variables": { "GLAD_PROFILE": "core", "GLAD_API": "gl=3.2" }
        }
    }
}

Setting BUILD_SHARED_LIBS variable to true will link the library dynamically and setting it globally in the top level CMakeLists.txt will link all the libraries libraries dynamically. You might have to do a clean build before building in order for it to build a dynamic link library.

There might also be a README.md in the packages remote directory that contains notes on the package.

The yacpm packages that are downloaded by a yacpm package will be placed into (or moved from packages) dependency_packages field so you can configure the package as needed like modifying the version in case the version provived by the package is incompatible with other packages (so manually resolve) or you need to use that package with a specific configuration. The dependents field inside the dependency package is there to show you all the dependents as well as to delay fetching the dependency until all its dependents are fetched.

You can log all commands and their output by setting verbose to true in yacpm.json:

{
    "verbose": true
}

You can set a different package repository (default is packages) as either a url or local directory to download from by setting remote as an array in yacpm.json. It will try every remote starting from the first one and DEFAULT_REMOTE can be use as alias to the default remote:

{
    "remotes": ["https://example.com/packages", "./packages", "DEFAULT_REMOTE"]
}

There is also a yacpm_extended.cmake file that contains nice cmake utilities that you can use by doing:

include(${CMAKE_BINARY_DIR}/yacpm.cmake)
yacpm_use_extended() # run after including yacpm.cmake

This contains a yacpm_target_warnings(<target_list> [visibility=PRIVATE]) function that sets strict warnings for a target. You can remove a warning by removing items from the YACPM_WARNINGS list (eg. list(REMOVE_ITEM YACPM_WARNINGS -Wshadow)). It also enables ccache or sccache, exports compile_commands.json for language servers, puts executables into build/bin, and sets CMAKE_BUILD_TYPE to Debug if it's not set.

Run tests/run_tests.py to run tests in the tests folder. Run python3 tests/run_tests.py -h for more information. This will also be ran with github-actions. Each test is a like an end to end test that tests yacpm as a whole to make sure nothing breaks for users.

Create a new directory in packages directory with the name being the package name. This name must be in kebab-case. Make a yacpkg.json file with the repository of the package and directories to fetch from the repository. The repository can be any git repository but the git server has to support sparse-checkout and filter fetches which github does. Set the packages field like in yacpm.json get any yacpm package (version should be an empty string most of the time) that are needed for that package. Only use this if the repository does not contain the dependency package.

{
    "repository": "https://github.com/bkaradzic/bgfx",
    "include": ["/3rdparty/webgpu", "/include", "/src"],
    "packages": { "bimg": "" }
}

Now make a CMakeLists.txt in that directory. The file should be as versatile as possible (work on as many versions) meaning add_subdirectory should be used (unless it's simple or the CMakeListst.txt is really complex or doesn't exist) and all files should be globed. If the library target name is not in kebab-case, do add_library(library_name ALIAS LibaryName). The config doesn't have to work on very old versions. Also use system headers for include directories to avoid compiler warnings from the library header.

set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
set(GLFW_INSTALL OFF CACHE BOOL "" FORCE)

add_subdirectory(repository)

file(GLOB_RECURSE SPDLOG_SOURCES repository/src/*.cpp repository/include/*.h)
add_library(spdlog ${SPDLOG_SOURCES})

# system headers like this
target_include_directories(spdlog SYSTEM PUBLIC repository/include)
target_compile_definitions(spdlog PRIVATE SPDLOG_COMPILED_LIB)

After everything has been tested, submit a pull request to the main branch to have the package be in the default remote.