spdlog/meson_options.txt

option('external_fmt',      type: 'boolean', value: false, description: 'Use external fmt package instead of the bundled')
option('enable_examples',   type: 'boolean', value: true, description: 'Build examples')
option('enable_benchmarks', type: 'boolean', value: false, description: 'Build benchmarks')
option('enable_tests',      type: 'boolean', value: true, description: 'Build tests')
option('library_type',      type: 'combo', choices: ['static', 'shared'], value: 'static', description: 'Library build type')
option('no_exceptions',     type: 'boolean', value: false, description: 'Disabled exceptions - abort() instead any error')

option('wchar_support',     type: 'boolean', value: false, description:'(Windows only) Support wchar api')
option('wchar_filenames',   type: 'boolean', value: false, description: '(Windows only) Support wchar filenames')
option('clock_coarse',      type: 'boolean', value: false, description:  '(Linux only) Use the much faster (but much less accurate) CLOCK_REALTIME_COARSE instead of the regular clock')
option('prevent_child_fd',  type: 'boolean', value: false, description:  'Prevent from child processes to inherit log file descriptors')
option('no_thread_id',      type: 'boolean', value: false, description:  'prevent spdlog from querying the thread id on each log call if thread id is not needed')
option('no_tls',            type: 'boolean', value: false, description:  'prevent spdlog from using thread local storage')
option('no_atomic_levels',  type: 'boolean', value: false, description:  'prevent spdlog from using of std::atomic log levels (use only if your code never modifies log levels concurrently')