Fixing -pthreads (Re: ports and -current)

[Daniel Eischen]

On Sun, 21 Sep 2003, Daniel Eischen wrote:

> On Mon, 22 Sep 2003, Dan Naumov wrote:
> 
> > On Mon, 2003-09-22 at 00:42, Daniel Eischen wrote:
> > > We've already been over this before.  The problem is not
> > > as bad as you think, and there are other platforms that
> > > don't have -pthread.
> > 
> > And those platforms would be?
> 
> Solaris for one:
> 
>   bash-2.05$ uname -a
>   SunOS pcnet5 5.8 Generic_108528-12 sun4u sparc SUNW,Ultra-2
>   bash-2.05$ type cc
>   cc is hashed (/usr/ucb/cc)
>   bash-2.05$ type gcc
>   gcc is hashed (/usr/local/bin/gcc)
>   bash-2.05$ cc -pthread
>   cc: unrecognized option `-pthread'
>   cc: No input files
>   bash-2.05$ gcc -pthread
>   gcc: unrecognized option `-pthread'
>   gcc: No input files
> 
> gcc does have -pthreads and -threads for Solaris, but these are
> basically NOOPs (just what we are doing).  They define
> -D_REENTRANT -D_PTHREADS for -pthreads and -D_REENTRANT
> and -D_SOLARIS_THREADS for -threads.  These do not specify
> any libraries to link, just predefines.  FreeBSD doesn't
> have anything to predefine, so it is a true NOOP.

Actually, it does look like the Solaris -threads and -pthreads
options do imply linking to -lthread and -lpthread respectively
(when not building with -shared).  But regardless, -threads and
-pthreads are not portable.

-- 
Dan Eischen