Gcc3 compiling environment

Question

Hi, I have a problem with gcc. In my laptop I had gcc4 installed, with libstdc++ and glibc, and everything worked smoothly. I had the necessity to install gcc-3.4 to compile an old version of a data analysis program which was not ported to gcc4. I installed gcc-3.4, but got some errors. In the support forum of the program i've been told that such errors are because my libstdc++ and glibc are not matching my gcc linker version. So my question is: how to build a full gcc-3.4 compile environment? Where can I find the needed packages?
Thanks for the help

Answer 1

Yesterday I've finally been able to compile root 5.14 using gcc-3.4 (as found in the gcc34 package from repository). I had to tweak the configuration heavily. First of all, there's a small bug in the configure script which won't allow you to use the GNU Scientific Library whose subversion is a two digit number (eg., >= 1.10). This is needed to enable mathmore support; fix it like this:
--- configure-bug 2009-01-18 20:41:56.000000000 +0100
+++ configure 2009-01-18 16:12:48.000000000 +0100
@@ -3503,7 +3503,7 @@
# check for gsl version >= 1.8
if test ! "x$found_dir" = "x"; then
message "Checking for GSL version >= 1.8"
- gsl_version=`grep "define GSL" $found_dir/gsl/gsl_version.h | sed 's/^.*"\([0-9]\.[0-9]\)"/\1/' | awk 'BEGIN { FS="." } { printf "%d", $1 * 1000 + $2 }'`
+ gsl_version=`grep "define GSL" $found_dir/gsl/gsl_version.h | sed 's/^.*"\([0-9]\.[0-9]*\)"/\1/' | awk 'BEGIN { FS="." } { printf "%d", $1 * 1000 + $2 }'`
if test $gsl_version -lt 1008; then
gslskip="skip"
result "no
To make sure that gcc-3.4 and g++-3.4 are used through all the build you have to set it in <root source>/config/Makefile.linux (both in the compiling and linking options). In the same file, change also the fortran complier from g77 to gfortran. If you want to use xrootd then you have to perform also this operation: unpack the <root source>/xrootd/src/xrootd-20060928-1600.src.tgz tarball before launching configure, change gcc -> gcc-3.4 and g++ -> g++-3.4 everywhere in configure, configure.ac andd config/GNUmake.rules.gcc, then pack the  tarball again and substitute the original one with the  modified one. This is because xrootd seems to have its own configuration files, and doesn't refer to Makefile.linux.
With these tweaks, this configuration worked for me:
./configure linux --enable-minuit2 --enable-mathmore --disable-krb5 --disable-cintex --disable-clarens
You should be able to enable kerberos support with MIT Kerberos (in my system there's heimdal kerberos which is not compatible with root).