Subj : Re: Where to download a pthread library
To   : comp.programming.threads
From : Marcin 'Qrczak' Kowalczyk
Date : Wed Mar 30 2005 12:33 pm

"David Schwartz" <davids@webmaster.com> writes:

>     Assume pthreads is supported if you have a 'pthread.h' header. Use 
> '-pthread' to invoke pthreads. If '-pthread' doesn't work, you have no 
> portable way to know what flags to use.

On SourceForge's MacOS X cc-2.95.2 doesn't recognize -pthread option.
Threads seem to work with no additional libraries linked though.

What about this:

- If there is no pthread.h, don't use pthreads. Otherwise:

- Check if -pthread option causes a warning. If no, keep it, otherwise
  drop it.

- Now, try to link a program which uses pthread_create. If not
  cross-compiling (I don't support cross-compilation yet anyway),
  try to run it and check whether it returns 0. Use pthreads if
  this succeeded.

Or maybe it's enough to assume that if pthread_create can be found by
the linker then it's usable?

-- 
   __("<         Marcin Kowalczyk
   \__/       qrczak@knm.org.pl
    ^^     http://qrnik.knm.org.pl/~qrczak/

.