Original version is copyright (c) 1993 Roger Binns
Updates are copyright (c) 2016 Stephen L Arnold
These tools were produced by Roger Binns for a fourth year project as part of a computer science degree, for the Computer Science department, Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom.
This software is provided in good faith, having been developed by Brunel University students as part of their normal course work. It should not be assumed that Brunel has any rights of ownership, and the University cannot accept any liability for its subsequent use. It is a condition of any such use that the user idemnifies the University against any claim (including third party claims) arising therefrom.
This software is provided 'as is'. If you have any doubts that could lead to legal matters, then don't use it.
To compile:
$ make
To run the test:
$ make -f Makefile.test test
For instructions on use, and other info:
$ nroff -man cyclo.1 | more
For an example of using cyclo on all C source files in the current dir to create a simple text complexity report, see the file cyclo.mk.inc and include it in your static makefile (or adapt it to Makefile.ac).
Christopher Lott made the package slightly more portable sometime in 1994 by cleaning up the Makefile and by adding .h/.c files for the strerror function.
Updated June 1996 by Bob Statsinger. These changes are copyright (c) 1996 1996 B.S. Software. Changes made by Bob Statsinger <rstats@interbase.borland.com>:
- In addition to C++ style function declarations
(e.g. cname::foo()), ANSI or K&R style declarations are now properly handled.
- if else if....else if..... else is properly handled
- cyclo -c now prints the total number of excutable C statements
in the source, along with the mccabe numbers so you can kinda get a complexity ratio as mccabe number/# statements
- I've disabled some of the parser failure checking - IMHO
what's important here is the cyclomatic number, not syntax correctness. YMMV.
- the file 'mccabe.example' is a sample shell script to run mcstrip and cyclo. It will need to be tailored for your site.
- test-input.c is an example test file.
Updated further in August 1996 by Christopher Lott to fix some small glitches in the code that g++ picked up. If my fixes cause further problems on other compilers, please let me know.
Beware the defs for getopt in main.C. You can turn them off by editing the Makefile (search for NEEDGETOPTDEFS).
Updated even further and packaged for Gentoo in Sep 2013 by Stephen Arnold. Added flex 3.x noyywrap option in Aug 2015, and pushed to github in Oct 2015.
Unlike cccc, cyclo is intended to be incorporated as a make target (using cpp, mcstrip, and cyclo) so you'll need to collect the output yourself.
Stay tuned for some examples...