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Stepping through a C codebase

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Posted by Npp83   (16 posts)  [Biography] bio
Date Wed 09 Feb 2011 06:21 PM (UTC)  [ quote  ]
Message
Is there a way to step through a C codebase in a debugger so I can get a feel for where the entry point is? I dont know where a codebase like SMAUG starts - what the entry point is.
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Posted by Nick Cash   USA  (626 posts)  [Biography] bio
Date Reply #1 on Wed 09 Feb 2011 07:25 PM (UTC)  [ quote  ]

Amended on Wed 09 Feb 2011 07:29 PM (UTC) by Nick Cash

Message
They entry point for every C program is the main() function. Go find it and look through the function calls from there.

Or you can take your method and step through the code with a debugger like gdb. Numerous posts on how to do so have been posted in this forum.

More or less you need to compile SMAUG with debugging information and then start SMAUG via gdb. In your Makefile there should be a line for compiler flags. Make sure it has -g or -g3. Then do ./gdb smaug port# and enjoy.

See this post for more details:

Template:post=3653 Please see the forum thread: http://gammon.com.au/forum/?id=3653.
~Nick Cash
http://www.nick-cash.com
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Posted by Npp83   (16 posts)  [Biography] bio
Date Reply #2 on Wed 09 Feb 2011 08:42 PM (UTC)  [ quote  ]
Message
Excellent, technical reply. Thank you. My programming began with Java mid 2005 and I found and stayed with C# since 2008 so going back as far as C for me and what tools I have available to mimic some of the things I am used to with VS or Eclipse is difficult.

So then is most debugging (debugging tecnniques in C) with gdb done with console output (seeding the code), is there any means of applying breakpoints?
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Posted by Nick Gammon   Australia  (18,770 posts)  [Biography] bio   Forum Administrator
Date Reply #3 on Wed 09 Feb 2011 09:49 PM (UTC)  [ quote  ]
Message
Read the link he gave. Another way to get to the same page is:

http://gammon.com.au/gdb

In there I discuss breakpoints.
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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