tracing function with Graphviz

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tracing function with Graphviz

I was searching for a tool to trace the function flow to help me understand the code. I came across the article "visualize function calls with graphviz" by Tim Jones.
Visualize function calls with Graphviz

I was able to obtain the flow diagram for simple programs and also for the example program mentioned in the article.

But failed when tried to use for large project. I included instrument.c file in the Makefile under the list of source files to be compiled. instrument.o file was generated but trace.txt was not generated. Also included -g and -finstrument-functions..

CFLAGS = -g -finstrument-functions

Can anyone guide me, if you have used that tool...

Thanks,
Chandra

cjjoy

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acinclude

ACINCLUDE(1)								GPL							      ACINCLUDE(1)

NAME

       acinclude - manual page for ac-archive 0.5.39

SYNOPSIS

       acinclude [OPTIONS] ...

DESCRIPTION

       Generate `acinclude.m4' by scanning `configure.ac' or `configure.in'

       --acdir=DIR
	      directory holding subdirectories with config files

       --help print this help, then exit

       -I     DIR
	      add directory to superdir search list for .m4 files

       .      add current directory as superdir to searchlist which is the default if no -I option was given.

       --output=FILE
	      put output in FILE (default acinclude.m4)

       --print-ac-dir
	      print name of directory with subdirs holding m4 files

       --verbose
	      don't be silent

       --version
	      print version number, then exit

	      Note that unlike aclocal the subdirectories (!!) of the acdir-path are searched for files - the default will find locals as ./*/*.m4
	      and always search for ac-macros installed as share/aclocal/*/*.m4 which may include the macros from ac-archive or from packages that
	      chose  to  install  multiple files into a subdirectory of share/aclocal.	The tool will warn at unresolved symbols starting with AX_
	      just as the original aclocal program did warn at unresolved macros with AC_.

AUTHOR

       Written by Tom Tromey <tromey@cygnus.com> modified for acinclude by Guido Draheim <guidod@gmx.de> (C) 2001

REPORTING BUGS

       Report bugs with original aclocal to <bug-automake@gnu.org>.  Report problems with acinclude to <ac-archive-list@sourceforge.net>.

       Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.  This is free software; see the source for copying  conditions.
       There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

SEE ALSO

       The  full documentation for the ac-macros handled with acinclude is maintained as m4 source and converted to html pages which get installed
       in doc/ac-archive subdirectories in the filesystem at your site. Have a look.

ac-archive 0.5.39						   January 2003 						      ACINCLUDE(1)

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