-h, --help
Print this message and then exit.

--version
Print a version message and then exit.

-w, --exit-on-warn
Exit with an error on any warning.
--no-exit-on-warn (&exit_on_warn, FALSE)

--for-cpp (&for_cpp, TRUE)
Generate C++ output.

--no-extern-c (&no_extern_c, TRUE)
Omit C++ extern "C" declarations from headers.

--no-gnu (&no_gnu, TRUE)
Do not use any GNU language extensions.

--no-touch-headers (&no_touch_headers, TRUE)
Avoid modifying output header files if there would not be
any changes, so that modification times are preserved.

--no-touch
Same as --no-touch-headers but applies to all output files.

--always-private-struct (&always_private_struct, TRUE)
Create the _priv pointer in the object structure even if
there are no private members.

--always-private-header (&private_header, PRIVATE_HEADER_ALWAYS)
Create a private header file even if it would be empty.

--ondemand-private-header (&private_header, PRIVATE_HEADER_ONDEMAND)
Create a private header file only if required (default).

--no-private-header (&private_header, PRIVATE_HEADER_NEVER)

--m4
Use M4 to produce input data.  All non-option arguments
and subsequent arguments are passed to m4.

--m4-clean
Same as --m4, except that no arguments other than those
specified on the command line are passed to m4.

--m4-dir
Print the default m4 search directory and then exit.

-n, --no-write
Do not actually create any output files.  The input is
still parsed to check for syntax errors.

--no-lines (&no_lines, TRUE)
Do not output any #line directives.

--no-self-alias (&no_self_alias, TRUE)
Do not output the SELF macros or Self typedefs.

--no-kill-underscores (0)

-o, --output-dir=DIR
Output files will be placed relative to DIR.

--file-sep[=CHAR]
Separate filename components with CHAR, as opposed to '-'.
If CHAR is omitted, no separator is used.

--gtk3 (&gtk3_ok, TRUE)
Use GTK+3 interface names.