How to determine which symbols in a library are used by the client?

[Nick Clifton]

Hi Rick,

> I have a 3rd party graphics library and some code that uses it. I think 
> we want to replace the graphics library, but we need to see what 
> routines are called in it. Is there an easy way to do this?

Sure - just link your compiled code but without including the 3rd party 
graphics library.  You should get "unresolved reference" errors from the linker 
for the functions in the graphics library that are called from your code.

Alternatively link your application as normal, including the graphics library, 
but also including the "-Map foo.map" command line option.  Then look through 
the foo.map file for the names of the symbols from the graphics library that 
have been included in the executable.

Cheers
   Nick