MAX_CANON		_PC_MAX_CANON
MAX_INPUT		_PC_MAX_INPUT
FILESIZEBITS		_PC_FILESIZEBITS
LINK_MAX		_PC_LINK_MAX
NAME_MAX		_PC_NAME_MAX
PATH_MAX		_PC_PATH_MAX
PIPE_BUF		_PC_PIPE_BUF
SYMLINK_MAX		_PC_SYMLINK_MAX