Graphite Compiler Version 5.2.1  [release build]
Copyright (c) 2002-2021, by SIL International.  All rights reserved.

usage: grcompiler [options] gdl-file input-font-file [output-font-file] [output-font-name]

Options:
   -c       - compress graphite tables
   -d       - output XML debugger file
   -D       - output all debugger files
   -e       - error message file; gdlerr.txt by default
   -g       - permit and ignore invalid glyph definitions
   -nNNNN   - set name table start location
   -p       - omit pass-avoidance optimizations
   -q       - quiet mode (no messages except on error)
   -vN      - set Silf table version number
   -wNNNN   - ignore warning with the given number
   -wall    - display all warnings
   -offsets - generate xoffset, yoffset, and gpoint glyph attributes