<HTML> <HEAD> <TITLE>Option: vcg</TITLE> </HEAD> <BODY bgcolor=white> <A HREF="toc.html">Table of Contents</A><P> <P>Previous: <A HREF="usage.html">-usage</A><HR><P> <H2>Option: <font color=#FF0080>vcg</font></H2><P> <A NAME="vcg"></A><DT><B><A HREF="vcg.html">-vcg</A></B> <DD> <DL COMPACT><DT><DD> Produce the call graph in the form of a VCG graph description. This description is written to a separate file, with the same stem as the file containing the main program, and suffix <I>.vcg</I>. This file is able to be given directly to <B><A HREF="http://localhost/cgi-bin/man/man2html?1L+xvcg">xvcg</A></B>(1L) to visualize the call graph. (If input is from the standard input, then the graph description is sent to standard output.) This switch is equivalent to <B><A HREF="calltree.html">-calltree</A>=vcg</B>. Default = no. <P> The VCG description as created is more complex than it need be. VCG allows graphs and nested subgraphs: each subroutine is created as a subgraph nested inside its calling routines. This allows you to interactively display subgraphs or summarise them. <P> The <B><A HREF="vcg.html">-vcg</A></B> option for <B>ftnchek</B> was written by Dr. Philip Rubini (<A HREF="mailto:p.rubini@cranfield.ac.uk">p.rubini@cranfield.ac.uk</A>). <P> <B>xvcg</B> is a graph visualisation tool which runs under the X windows system. It is freely available from <A HREF="ftp://ftp.cs.uni-sb.de">ftp.cs.uni-sb.de</A>. It was written by G. Sander of the University of Saarland, Germany. <P> See also: <B><A HREF="calltree.html">-calltree</A></B>, <B><A HREF="crossref.html">-crossref</A></B>, <B><A HREF="reference.html">-reference</A></B>, <B><A HREF="sort.html">-sort</A></B>. </DL> <P> <P><HR><P>Next: <A HREF="version.html">-version</A> </BODY></HTML>