General-purposeoptions-d, --depth=NUMBER
Set the depth at which the flowgraph is cut off. By default the depth is not limited.
--debug[=NUMBER]
Set debugging level.
-f, --format=NAME
Use given output format NAME. Valid names are dot (DOT language), gnu (the default), and posix.
-i, --include=CLASSES
Include specified classes of symbols. The ^or- symbol excludes the classes that follow it. Valid
classes are:
_(underscore)
Symbols whose names begin with an underscore.
s Static symbols
t Typedefs (for cross-references only).
x All data symbols, both external and static
-o, --output=FILE
Set output file name (default is -, meaning stdout).
-r, --reverse
Print reverse call tree.
--no-reverse
Disable the effect of the previous --reverse option.
-x, --xref
Produce cross-reference listing only.
-v, --verbose
Enable verbose error diagnostics.
Parsercontrol-a, --ansi
Accept only sources in ANSI C.
--no-ansi
Don't assume input files are written in ANSI C.
-D, --define=NAME[=DEFN]
Predefine NAME as a macro.
-I, --include-dir=DIR
Add the directory DIR to the list of directories to be searched for header files.
-m, --main=NAME
Assume main function is NAME. This option can be given multiple times. A separate graph will be
drawn for each function given as its argument.
--no-main
Assume there's no main function in the program. This option has the same effect as --all, except
that, if the program do define the main function, it will be treated as any other functions, i.e.
it will not be placed at the top of output, but in its place as per the lexicographic ordering of
function names. See also the description of --all.
-p, --pushdown=NUMBER
Set initial token stack size to NUMBER.
--preprocess[=COMMAND], --cpp[=COMMAND]
Run the specified preprocessor command.
--no-preprocess, --no-cpp
Disable preprocessing.
-s, --symbol=SYMBOL:[=]TYPE
Register SYMBOL with given TYPE, or define an alias (if := is used). Valid types are: key‐word(orkw), modifier, qualifier, identifier, type, and wrapper. Any unambiguous abbreviation of
the above is also accepted.
-S, --use-indentation
Rely on indentation to solve suspicious constructs.
--no-use-indentation
Don't use indentation in parsing (default).
--target=FUNCTION
If this option is given, the produced graph will contain only paths leading from start function
(or functions) to the given FUNCTION.
-U, --undefine=NAME
Cancel any previous definition of NAME.
Outputcontrol-A, --all
Produce graphs for all global functions in the program. Use this option if your program contains
functions which are not directly reachable from main().
The output consist of separate flow graphs for each top-level function defined in the program.
These graphs will be placed after the graph for main() (if it exists), and will be ordered lexico‐
graphically by the function name.
If used twice, graphs for all global functions (whether top-level or not) will be displayed.
-b, --brief
Brief output.
--no-brief
Disable brief output.
--emacs
Format output for use with GNU Emacs.
--no-emacs
Disable the effect of the previous --emacs option.
-l, --print-level
Print nesting level along with the call tree.
--no-print-level
Don't print nesting level.
--level-indent=ELEMENT
Control graph appearance.
-n, --number
Print line numbers.
--no-number
Don't print line numbers.
--omit-arguments
Do not print argument lists in function declarations.
--no-omit-arguments
Print argument lists in function declarations (the default).
--omit-symbol-names
Do not print symbol names in declaration strings.
--no-omit-symbol-names
Print symbol names in declaration strings (the default).
-T, --tree
Draw ASCII art tree.
--no-tree
Disable tree output.
Informationaloptions
These options instruct the program to output the requested piece of information and exit.
-?, --help
Print a short help summary.
--usage
Print a summary of available options.
-V, --version
Print program version.
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