finding the library in which symbol is defined.

[Jeffrey Holle <jeff dot holle at verizon dot net>]

I use Linux, g++ v3.3, and python v3.3.3

I'm in the process of struggling with unresolved reference link errors 
in a cpp program that is under development.

The program uses a shared library which I have constructed.
This library in turn uses boost.python and the Python C API.

The link errors all concern functions from the later, which start with "Py".

First question.
Is it normal that a cpp client of a shared library share the resource 
requirements of the shared library?

I am aware that on windows, with msvc 6.0, this represents an abnormal 
erroneous condition.  It means that the cpp client is using concrete 
classes cross a dll boundary.

Does Linux share this "feature"?

Second question.

What is the difference between "normal" symbols and dynamic symbols?
The later are obtainable from a library using the "--dynamic" option of 
the nm utility.

I've constructed a script that utilizes nm to find library modules 
defining specific symbols.  It is:
  #!/bin/sh
  # Find the shared libraries that define specific symbol
  # arg 1 - the root directory from which to search
  # arg 2 - the library name(s) to search for
  # arg 3 - the symbol to search for.
  find $1 -name "$2" -exec nm --print-file-name '{}' ';' | grep " [^ U] 
""$3"

Third question
Note the use of [ ^ U].  This matches only lines from nm that represent 
references of the symbols.  I'm not sure that is what I want.  I wish to 
find only symbols that lead to resolution of my linker errors.  Should I 
 instead by search for a specific type, maybe like "D"?