Usage: cflow [OPTION...] [FILE]...
generate a program flowgraph
General options:
-d, --depth=NUMBER Set the depth at which the flowgraph is cut off
-f, --format=NAME Use given output format NAME. Valid names are
`gnu' (default) and `posix'
-i, --include=CLASSES Include specified classes of symbols (see below).
Prepend CLASSES with ^ or - to exclude them from
the output
-o, --output=FILE Set output file name (default -, meaning stdout)
-r, --reverse * Print reverse call tree
-x, --xref Produce cross-reference listing only
Symbols classes for --include argument
_ symbols whose names begin with an underscore
s static symbols
t typedefs (for cross-references only)
x all data symbols, both external and static
Parser control:
-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.
-S, --use-indentation * Rely on indentation
-U, --undefine=NAME Cancel any previous definition of NAME
-a, --ansi * Accept only sources in ANSI C
-m, --main=NAME Assume main function to be called NAME
--no-main There's no main function; print graphs for all
functions in the program
-p, --pushdown=NUMBER Set initial token stack size to NUMBER
--preprocess[=COMMAND], --cpp[=COMMAND]
* Run the specified preprocessor command
-s, --symbol=SYMBOL:[=]TYPE Register SYMBOL with given TYPE, or define an
alias (if := is used). Valid types are: keyword
(or kw), modifier, qualifier, identifier, type,
wrapper. Any unambiguous abbreviation of the above
is also accepted
Output control:
-A, --all Show all functions, not only those reachable from
main
-T, --tree * Draw ASCII art tree
-b, --brief * Brief output
--emacs * Additionally format output for use with GNU
Emacs
--level-indent=ELEMENT Control graph appearance
-l, --print-level * Print nesting level along with the call tree
-n, --number * Print line numbers
--omit-arguments * Do not print argument lists in function
declarations
--omit-symbol-names * Do not print symbol names in declaration strings
Informational options:
--debug[=NUMBER] Set debugging level
-v, --verbose * Verbose error diagnostics
-?, --help give this help list
-V, --version print program version
--usage give a short usage message
Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options.
* The effect of each option marked with an asterisk is reversed if the option's
long name is prefixed with `no-'. For example, --no-cpp cancels --cpp.
Report bugs to <bug-cflow@gnu.org>.
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