From:	SMTP%"everhart@DMC.COM" 30-DEC-1994 16:10:50.71
To:	EVERHART
CC:	
Subj:	Re: POSIX for openVMS is disappointing...do I have it misconfigured?

Date: Fri, 30 Dec 1994 15:32:07 EDT
From: everhart@DMC.COM
To: gce@DMC.COM
Message-ID: <00989B82.F89ACD60.650@DMC.COM>
Subject: Re: POSIX for openVMS is disappointing...do I have it misconfigured?

X-News: thehulk vmsnet.vms-posix:8
From: mosterma@ms.philips.nl (Wim Mosterman QR1334)
Subject:Re: POSIX for openVMS is disappointing...do I have it misconfigured?
Date: Tue, 20 Dec 1994 09:33:03 GMT
Message-ID:<1994Dec20.093303.25162@ms.philips.nl>

Chris Moreton-Smith (cmm@isise.rl.ac.uk) wrote:
: We've just installed POSIX 2.0/VAX and it is a breath of fresh air to use
: compared with earlier versions!

: Seriously though, the problem with GNU configure scripts that beats me
: is how to make the linker return a failure status when it gets an
: unresolved reference.

: GNU autoconfigure uses the status from a cc link operation to
: determine the presence (or absence) of a library call on a particular
: system.  In VMS (and hence in POSIX) an unresolved reference is NOT a fatal
: error, exactly the opposite of what the GNU test expects.

: If anyone has a fix for this one I'd love to know, configure scripts
: do seem to run quite effectively otherwise and the ability to port U**X
: based code quite effortlessly to VMS is a real bonus.

Here is what I did to get the generation of X11R6 going in POSIX 1.0.
Rather disgusting, but what the heck, it works...

Adapt the TMP variable to something that reflects your temporary path.
##################   Cut Here ##################
#!/bin/sh

TMP=/dka200/posix_tmp/CCPMSTMP.$$

rm -f $TMP

trap 'rm -f $TMP; exit 1' 1 2 3 15

# compile and save status
/bin/c89 -Wansi89 -Wc,warn=\(noinfo,disable=LONGEXTERN\) ${1+$@} >> $TMP
#/bin/c89 -Wansi89 ${1+$@} >> $TMP
STATUS=$?

# show possible compiler messages
cat $TMP

# the linker always returns 0 ...
if grep '^%LINK-I-UDFSYM' $TMP >> /dev/null
then
	STATUS=1
fi

rm -f $TMP
exit $STATUS

##################   Cut Here ##################
Enjoy,

.-------------------------------..-------------------------------.
|  .--.          ,-.  ,-.       ||                               |
|  \   \        /   \/   \      ||                               |
|   \   \  ,.  /          \     ||                               |
|    \   \/  \/   /\  /\   \    ||  Wim Mosterman                |
|     \          /  `'  \   \   ||  Philips Medical Systems      |
|      \   /\   /        \   \  ||  Best, The Netherlands        |
|       `-'  `-'          `--'  ||  mosterma@mmra1.ms.philips.nl |
`-------------------------------'`-------------------------------'