[HOOK - conan-center.py] pre_export(): WARN: [HEADER_ONLY, NO COPY SOURCE (KB-H005)] This recipe is a header only library as it does not declare 'settings'. Please include 'no_copy_source' to avoid unnecessary copy steps
wayland-protocols/1.20: WARN: compiler setting should be defined.
wayland-protocols/1.20: WARN: build_type setting should be defined.
wayland-protocols/1.20: WARN: build_type setting should be defined.
[HOOK - conan-center.py] post_package(): ERROR: [MATCHING CONFIGURATION (KB-H014)] Package for Header Only does not contain artifacts with these extensions: ['h', 'h++', 'hh', 'hxx', 'hpp'] (https://github.com/conan-io/conan-center-index/blob/master/docs/error_knowledge_base.md#KB-H014) 
[HOOK - conan-center.py] post_package(): ERROR: [MATCHING CONFIGURATION (KB-H014)] Packaged artifacts does not match the settings used: os=None, compiler=None (https://github.com/conan-io/conan-center-index/blob/master/docs/error_knowledge_base.md#KB-H014) 
ERROR: [HOOK - conan-center.py] post_package(): Some checks failed running the hook, check the output