Subj : Re: Where to download a pthread library
To   : comp.programming.threads
From : David Butenhof
Date : Fri Apr 01 2005 04:02 pm

Drazen Kacar wrote:
> David Butenhof wrote:
> 
>> David Schwartz wrote:
> 
>>>Many platforms require more than just linking in an additional
>>>library, they need compiler flags (like -D_REENTRANT) as well. The
>>>standard is '-pthread' to do 
> 
>> -pthread is arguably a reasonably widespread CONVENTION, but definitely 
>> not worthy of the term "standard" either in a de jure or de facto sense. 
>> It'll work for many versions of gcc across platforms, (but not all), and 
>> several vendor compilers. The second most popular is probably "-mt" 
>> (e.g., on Solaris).
> 
> AFAIK, -mt is just a shortcut for -D_REENTRANT and -lthread with Sun's
> compiler. You still need to add -lpthread if you want to use POSIX
> threads. Maybe it would work with -mt only, but that's an implementation
> artifact, I think.

The real point, beyond the few common examples, is that ALL of this is 
"implementation artifact", unless you're using a c89 or c99 command that 
conforms to UNIX 2001 or later. And I doubt that many people are -- even 
if there really ARE any fully conforming commands (which I also doubt).

-- 
Dave Butenhof, David.Butenhof@hp.com
HP Utility Pricing software, POSIX thread consultant
Manageability Solutions Lab (MSL), Hewlett-Packard Company
110 Spit Brook Road, ZK2/3-Q18, Nashua, NH 03062

.