System V (3B2), CAP, Streams

[Stephen J. Friedl]

In article <20228 at adm.BRL.MIL> RSILVERMAN at eagle.wesleyan.edu writes:
>
> I am trying to get CAP running on an AT&T 3B2 running System V R3.1.
> ... but when I attempt to link it, the Streams system calls getmsg,
> putmsg and sigset are not found.

In article <1410 at hcr.UUCP>, larry at hcr.UUCP (Larry Philps) writes:
>
> Putmsg, getmsg and sigset are system calls under SYSV R3.  So, they will be
> resolved by the system call stubs in libc.a.

This reveals an unfortunate aspect of the 3B world.  Compilers
are packaged separately from operating systems, and most of the
libraries (i.e., libc.a) live with the compiler.  Upgrading to
a more recent operating system (say, to SVR3.1) means that the
operating system supports the new calls, but you can't use them
unless your compiler has the hooks in libc.a (or unless you feel
like writing some assembly language wrapper functions).

You can check your compiler version with:

	cc -V

I believe that Issues 2 and 3, plus C-FP+ are all packaged with
Sys V Rel 2 libraries, and that CPLU4.1 and above have the SVR3
libraries.

     Steve

-- 
Stephen J. Friedl / V-Systems, Inc. / Santa Ana, CA / +1 714 545 6442 
3B2-kind-of-guy   / friedl at vsi.com  / {attmail, uunet, etc}!vsi!friedl
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"Hard work is a vastly overrated virtue" - my brother