Re: xlc_r question for AIX 4.1.4

"mmissire" <mmissire_at_visigenic.com> wrote:   <snip>
>The man page for xlc_r doesn't say why you would use it, and I don't
>have access to the AIX C Language Reference or other compiler docs.
>Can anyone explain why one needs to use xlc_r? Should one use it for
>all shared libraries?
>

You only need to use xlc_r if your application uses threads. By using xlc_r, you will pick up the 're-entrant' versions of system libraries such as libc (in this case libc_r). However, it is not sufficient simply to use xlc_r, since some library routines have a re-entrant replacement (with the suffix '_r') with extra parameters to allow context information to be passed in/out of the routines instead of using a static data area.

If you're not multi-threaded, I'm not sure why you'd need to use xlc_r.

Gary

-- 
_____________________________________________________________________
Gary Walsh                         E-mail: Gary_Walsh_at_spire.hds.co.uk
Open Systems Product Specialist    Phone:  +44 1753 618806
Hitachi Data Systems Europe        Disclaimer: My views, not HDS'