CMake wrapper to provide libyaml.

The CMake script in this package checks if a libyaml that has exactly the version required by ROS 2 is available in the system.

If such libyaml is available in the system, it only installs a Findyaml.cmake CMake find module, to ensure that the library can be always found via:

find_package(yaml REQUIRED)

and linked via:

target_link_libraries(<target> PRIVATE yaml)

even if no CMake config file for yaml is installed in the system.

If a libyaml that has exactly the version required by ROS 2 is not available in the system, then it downloads and installs libyaml as part of this package thanks to CMake's ExternalProject module.

The FORCE_BUILD_VENDOR_PKG CMake option (that by default is OFF) is provided to allow forcing a libyaml build, regardless of what can be found in the system.

Quality declaration for this package: libyaml_vendor QD.

Quality declaration of external dependency libyaml.