is gcc 2.95.2 -pthreads recommended?

[Benjamin Kosnik]

> Is gcc -pthreads the recommended way of using libstdc++ (with 2.95.2)
> in an multi-thread safe way? 
yes

> 
> Also, is --enable-threads supposed to cause gcc to #define _PTHREADS
> or __STL_PTHREADS by default? We have gcc installations that appear
> to #define __STL_PTHREADS by default (on Linux?), and we have others
> (built on SunOS 5.8 with and without --enable-threads) that do not.

__STL_PTHREADS is deprecated. That was usually defined in stl_config.h

_PTHREADS is defined with -pthreads.