[Isugamedev-midworld] building with gcc3

[Ben S. <bs...@vr...>]

Please note that I have modified the build for linux machines such that 
gcc3 is the default compiler. I have done this for 2 reasons.

1. Exception handling in gcc2.x is rather spotty and I'm tired of 
dealing with the headaches it causes.

2. OpenSG runs much better with gcc3 than with gcc2.96. Since I'm 
halfway towards getting OpenSG support into Midworld, I figured I'd 
allow you to make sure all you code compiles with gcc3 before you have 
to deal with getting the OpenSG dependency.

NOTE: You will need to rebuild the following dependent libraries with 
gcc3. I'm sorry, but there's no way around this. If you fail to do this, 
you will surely get unresolved symbol errors when linking.

* Audiere
* Corona
* GLText

For all of the above libraries, you can make them use gcc3 by following 
these rules from a source distribution ... (I'm assuming tcsh since most 
of you work at VRAC). The following example works for audiere 1.9.0

$ tar xvzf audiere-1.9.0.tar.gz
$ cd audiere-1.9.0
$ setenv CC=gcc3
$ setenv CXX=g++3
$ ./configure --prefix=/a/path/to/somewhere
$ gmake
$ gmake install


cheers,
-----
Ben Scott
Research Assistant VRAC
bs...@ia...