mark_as_advanced(FORCE
  HAVE_PROTOTYPES
  HAVE_UNSIGNED_CHAR
  HAVE_UNSIGNED_SHORT
  CHAR_IS_UNSIGNED
  HAVE_STDDEF_H
  HAVE_STDLIB_H
  NEED_BSD_STRINGS
  NEED_SYS_TYPES_H
  NEED_FAR_POINTERS
  NEED_SHORT_EXTERNAL_NAMES
  INCOMPLETE_TYPES_BROKEN
  RIGHT_SHIFT_IS_UNSIGNED
  BMP_SUPPORTED
  GIF_SUPPORTED
  PPM_SUPPORTED
  RLE_SUPPORTED
  TARGA_SUPPORTED
  DEFAULT_FMT
  TWO_FILE_COMMANDLINE
  NEED_SIGNAL_CATCHER
  DONT_USE_B_MODE
  PROGRESS_REPORT
  NO_OVERWRITE_CHECK
)