[boost] Problematic inclusion of "pthread.h".

From: Markus Schöpflin (markus.schoepflin_at_[hidden])
Date: 2004-10-05 08:05:13

When compiling the smart pointer tests with gcc 3.4.2 on Tru64, two tests 
fail with an error message. (See http://tinyurl.com/4jngu )

As far as I can see, the shared pointer implementation at some point 
includes the "pthread.h" system header file but gcc on Tru64 requires that 
-pthread must be specified on the command line when including this header file.

When running this test with gcc 3.4.2 on Linux the file "pthread.h" is also 
included but gcc doesn't require the addition of -pthread in the command 
line on this platform.

This leads to the question whether it is ok to include "pthread.h" without 
specifying -pthread on the command line. Does anyone know an answer to this?

Markus