Tool to determine symbol origin in C

Question

I'm looking for a tool that, given a bit of C, will tell you what symbols (types, precompiler definitions, functions, etc) are used from a given header file. I'm doing a port of a large driver from Solaris to Windows and figuring out where things are coming from is getting to be difficult, so this would be a huge help. Any ideas?

Edit: Not an absolute requirement, but tools that work on Windows would be a plus.

Edit #2: To clarify what I'm trying to do, I have a codebase I'm trying to port, which brings in a large number of headers. What I'd like is a tool that, given foo.c, will tell me which symbols it uses from bar.h.

Answer 1

I use on both Linux and Windows : gvim + ctags + cscope.
Same environment will work on solaris as well, but this is of course force you to use vim as editor, i pretty sure that emacs can work with both ctags and cscope as well.
You might want give a try to vim, it's a bit hard at first, but soon you can't work another way. The most efficient editor (IMHO).

Comment replay:

Look into the cscope man:

...

Find functions called by this function:
Find functions calling this function:

...

I think it's exactly what are you looking for ... Please clarify if not.

Comment replay 2:

ok, now i understand you. The tools i suggested can help you understand code flow, and find there certain symbol is defined, but not what are you looking for.

Not what you asking for but since we are talking i have some experience with porting and drivers (feel free to ignore)

It seems like compiler is good enough for your task. You just starting with original file and let compiler find what missing part, it will be a lot of empty stubs and you will get you code compiled.

At least for beginning i suggest you to create a lot of stubs and modifying original code as less as possible, later on once you get it working you can optimize.

It's might be more complex depending on the type of driver your are porting (I'm assuming kernel driver), the Windows and Solaris subsystems are not so alike. We do have a driver working on both solaris and windows, but it was designed to be multi platform from the beginning.

Answer 2

Try DoxyGen, it can produce graphs and/or HTML and highly customizable

Answer 3

emacs and etags.

And I leverage make to run the tag indexing for me---that way I can index a large project with one command. I've been thinking about building a master index and separate module indecies, but haven't gotten around to implementing this yet...

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@Ilya: Would pistols at dawn be acceptable?