RE: Compatible 2.96 cpp

["Ken Schroeder" <kschroed cisco com>]

Here is the hack we have put in place:

mv /usr/bin/gcc /usr/bin/gcc323
Then added the wrapper script below to /usr/bin/gcc which then any
user who requires gcc296 by default we set GCC296=y in they're profile.
Simlar setup for g++.

samus:/users/kschroed # ls -l /usr/bin/gcc*
-rwxr-xr-x    1 root     root          299 Sep 23 09:43 /usr/bin/gcc
-rwxr-xr-x    2 root     root        81864 Mar 24  2004 /usr/bin/gcc296
-rwxr-xr-x    2 root     root        88836 Apr 15  2004 /usr/bin/gcc323
-rwxr-xr-x    1 root     root        84808 Mar  4  2004 /usr/bin/gcc-ssa
samus:/users/kschroed # cat /usr/bin/gcc
#!/bin/sh

if id | grep -q gcc296; then
        #Use the compat gcc
        exec /usr/bin/gcc296 $@
elif [ -n "$GCC296" ]; then
        # Use the compat gcc
        exec /usr/bin/gcc296 $@
else
        # Use the standard gcc
        exec /usr/bin/gcc323 $@
fi

-----Original Message-----
From: taroon-list-bounces redhat com
[mailto:taroon-list-bounces redhat com]On Behalf Of Jakub Jelinek
Sent: Wednesday, December 01, 2004 4:58 AM
To: Discussion of Red Hat Enterprise Linux 3 (Taroon)
Subject: Re: Compatible 2.96 cpp


On Wed, Dec 01, 2004 at 11:52:51AM +0200, Avrahami David wrote:
> Hi,
>
> One of our applications(Tivoli) should be compiled with gcc 2.96.
> Due to that I made the following changes:
> # mv /usr/bin/gcc /usr/bin/gcc323
> # mv /usr/bin/g++ /usr/bin/g++323
> # ln -s /usr/bin/gcc296 /usr/bin/gcc
> # ln -s /usr/bin/g++296 /usr/bin/g++
>
> The command I run and output error are as following:
>
> # tidlc -p /usr/bin/cpp -I/usr/Tivoli/include/linux-ix86 -I. test.ist
> Tivoli IDL Compiler, Version 2.0, Date 09/19/97
> tidlc: -lang-c++: linker input file unused because linking not done
> <built-in>:(around line 1):ERROR: in cfe::illegal suffix in file:
> <built-in>
> <command line>:(around line 1):ERROR: in cfe::illegal suffix in file:
> <command line>
>
>
> It seems that Tivoli asks for cpp 2.96 also, but I couldn't find such
> file as I did with gcc and g++ .

You can use
#!/bin/sh
exec /usr/bin/gcc296 -E -xc "$@"
as your temporary /usr/bin/cpp for most purposes.

	Jakub

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