module load compilers/gcc-4.6.2

module load compilers/gcc-4.5.1

module load compilers/gcc-4.2.4

module load compilers/gcc-3.3

yum install sharutils systemtap-sdt-devel gcc-java gcc-gnat libgnat ppl-devel 
yum install cloog-ppl-devel gmp-devel mpfr-devel zlib-static libmpc libmpc-devel
yum install dejagnu glibc-static texinfo
yum install elfutils-devel elfutils-libelf-devel libmpc-devel gtk2-devel libart_lgpl-devel alsa-lib-devel

cd /sw/gcc/4.6.2/src

Now download latest SRPM of binutils and GCC from Fedora16 repository.
$ wget -c http://mirror.optus.net/fedora/linux/releases/16/Fedora/source/SRPMS/gcc-4.6.2-1.fc16.src.rpm
$ wget -c http://mirror.optus.net/fedora/linux/releases/16/Fedora/source/SRPMS/binutils-2.21.53.0.1-2.fc16.src.rpm

su - <yourusername>
cd /sw/gcc/4.6.2/src
 
Install SRPMS
$ rpm -ivh  binutils-2.21.53.0.1-2.fc16.src.rpm
$ rpm -ivh gcc-4.6.2-1.fc16.src.rpm

As GCC has dependency on binutils, we need to compile and install binutils RPMS first. So

$ rpmbuild -ba ~/rpmbuild/SPECS/binutils.spec

This will take long time to complete. When it is completed then you will see RPMS are created at 
/export/home/s2594054/rpmbuild/RPMS/x86_64 path.
Install them using following command.

(sudo rpm -i --prefix=/sw/gcc/4.6.2/binutils/2.21.53 binutils-*)

$ sudo rpm -Uvh ~/rpmbuild/RPMS/x86_64/binutils-*

Now we are ready to compile and create RPMS for gcc-4.6.2.

We need to edit gcc.spec to change version of libmpc.

$ sudo yum -y install glibc glibc-devel
$ vim ~/rpmbuild/SPECS/gcc.spec
Search for "0.8.1" and replace it by "0.8-3" because we have installed this version of libmpc.(Please see above).
Comment the following line as well
#cp -r -p $libstdcxx_doc_builddir/man/man3/* %{buildroot}%{_mandir}/man3/


Now build the rpm:

rpmbuild -ba ~/rpmbuild/SPECS/gcc.spec

cd /sw/gcc/4.6.2/x86_64
rpm2cpio /rpmbuild/RPMS/x86_64/*.rpm | cpio -i -d

cd /sw/gcc/4.6.2/binutils/2.21.53
rpm2cpio /data1/RPMS/gcc462/binutils-*  | cpio -i -d

cd /sw/gcc/4.7.1/src
tar -zxvf gcc-4.7.1.tar.gz

mkdir /sw/gcc/4.7.1/src/gcc-4.7.1-objdir
cd /sw/gcc/4.7.1/src/gcc-4.7.1-objdir
/sw/gcc/4.7.1/src/gcc-4.7.1/configure --prefix=/sw/gcc/4.7.1 --enable-languages=f95,c,c++
make
make install

mkdir -p /sw/gcc/4.5.1/
su - s123456
rpm -ivh gcc-4.5.1-4.fc14.src.rpm
rpmbuild -ba ~/rpmbuild/SPECS/gcc.spec
....
...

Wrote: /export/home/s2594054/rpmbuild/SRPMS/gcc-4.5.1-4.el6.src.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/gcc-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libgcc-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/gcc-c++-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libstdc++-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libstdc++-devel-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libstdc++-static-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libstdc++-docs-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/gcc-objc-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/gcc-objc++-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libobjc-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/gcc-gfortran-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libgfortran-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libgomp-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libmudflap-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libmudflap-devel-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libmudflap-static-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/gcc-java-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libgcj-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libgcj-devel-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libgcj-src-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/cpp-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/gcc-gnat-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libgnat-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libgnat-devel-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/libgnat-static-4.5.1-4.el6.x86_64.rpm
Wrote: /export/home/s2594054/rpmbuild/RPMS/x86_64/gcc-debuginfo-4.5.1-4.el6.x86_64.rpm


cd /sw/gcc/4.5.1/x86_64
rpm2cpio /rpmbuild/RPMS/x86_64/*.rpm | cpio -i -d

module display compiler/gcc-4.5.1
-------------------------------------------------------------------
/sw/com/modulefiles/compilers/gcc-4.5.1:

module-whatis    loads the compiler/4.5.1-4 environment
prepend-path     PATH /sw/gcc//4.5.1/x86_64/usr/bin:/sw/gcc//4.5.1/x86_64/usr/libexec/gcc/x86_64-redhat-linux/4.5.1:/sw/gcc//4.5.1/x86_64/usr/libexec/getconf:/sw/gcc//4.5.1/x86_64/usr/sbin
prepend-path     LD_LIBRARY_PATH /sw/gcc//4.5.1/x86_64/usr/lib/gcc/x86_64-redhat-linux/4.5.1/32:/sw/gcc//4.5.1/x86_64/usr/lib/gcc/x86_64-redhat-linux/4.5.1:/sw/gcc//4.5.1/x86_64/lib:/sw/gcc//4.5.1/x86_64/lib64:/sw/gcc//4.5.1/x86_64/usr/lib64:/sw/gcc//4.5.1/x86_64/usr/lib
setenv           COMPILER gcc
setenv           CC gcc
setenv           FC gfortran
setenv           CXX g++
prepend-path     C_INCLUDE_PATH /sw/gcc//4.5.1/x86_64/usr/lib/gcc/x86_64-redhat-linux/4.5.1/include:/sw/gcc//4.5.1/x86_64/usr/include
prepend-path     CPLUS_INCLUDE_PATH /sw/gcc//4.5.1/x86_64/usr/lib/gcc/x86_64-redhat-linux/4.5.1/include:/sw/gcc//4.5.1/x86_64/usr/include:/sw/gcc//4.5.1/x86_64/usr/include/c++/4.5.1
prepend-path     INCLUDE /sw/gcc//4.5.1/x86_64/include:/sw/gcc//4.5.1/x86_64/usr/lib/gcc/x86_64-redhat-linux/4.5.1/include:/sw/gcc//4.5.1/x86_64/usr/include:/sw/gcc//4.5.1/x86_64/usr/include/c++/4.5.1
prepend-path     MANPATH /sw/gcc//4.5.1/x86_64/usr/share/man
-------------------------------------------------------------------

 module display compilers/gcc-4.6.2
-------------------------------------------------------------------
/sw/com/modulefiles/compilers/gcc-4.6.2:

module-whatis    loads the compiler/4.6.2 environment
prepend-path     PATH /sw/gcc//4.6.2/x86_64/usr/bin:/sw/gcc//4.6.2/x86_64/usr/libexec/gcc/x86_64-redhat-linux/4.6.2:/sw/gcc//4.6.2/x86_64/usr/libexec/getconf:/sw/gcc//4.6.2/x86_64/usr/sbin
prepend-path     LD_LIBRARY_PATH /sw/gcc//4.6.2/x86_64/usr/lib/gcc/x86_64-redhat-linux/4.6.2/32:/sw/gcc//4.6.2/x86_64/usr/lib/gcc/x86_64-redhat-linux/4.6.2:/sw/gcc//4.6.2/x86_64/lib:/sw/gcc//4.6.2/x86_64/lib64:/sw/gcc//4.6.2/x86_64/usr/lib64:/sw/gcc//4.6.2/x86_64/usr/lib
setenv           COMPILER gcc
setenv           CC gcc
setenv           FC gfortran
setenv           CXX g++
prepend-path     C_INCLUDE_PATH /sw/gcc//4.6.2/x86_64/usr/lib/gcc/x86_64-redhat-linux/4.6.2/include:/sw/gcc//4.6.2/x86_64/usr/include
prepend-path     CPLUS_INCLUDE_PATH /sw/gcc//4.6.2/x86_64/usr/lib/gcc/x86_64-redhat-linux/4.6.2/include:/sw/gcc//4.6.2/x86_64/usr/include:/sw/gcc//4.6.2/x86_64/usr/include/c++/4.6.2
prepend-path     INCLUDE /sw/gcc//4.6.2/x86_64/include:/sw/gcc//4.6.2/x86_64/usr/lib/gcc/x86_64-redhat-linux/4.6.2/include:/sw/gcc//4.6.2/x86_64/usr/include:/sw/gcc//4.6.2/x86_64/usr/include/c++/4.6.2
prepend-path     MANPATH /sw/gcc//4.6.2/x86_64/usr/share/man
-------------------------------------------------------------------

mkdir /sw/gcc/4.2.4/src
tar -zxvf gcc-4.2.4.tar.gz
cd /sw/gcc/4.2.4/src/gcc-4.2.4
mkdir /sw/gcc/4.2.4/src/gcc-4.2.4-objdir
cd /sw/gcc/4.2.4/src/gcc-4.2.4-objdir
 ../gcc-4.2.4/configure --prefix=/sw/gcc/4.2.4/ --enable-languages=c,c++ 
make
make install

Install these packages:

compat-gcc-34-3.4.6-19.el6.x86_64.rpm  compat-gcc-34-c++-3.4.6-19.el6.x86_64.rpm  compat-libstdc++-33-3.2.3-69.el6.x86_64.rpm compat-gcc-34-g77-3.4.6-19.el6.x86_64.rpm compat-libf2c-34-3.4.6-19.el6.x86_64.rpm

rpm -ivh compat-gcc-34-g77-3.4.6-19.el6.x86_64.rpm compat-libf2c-34-3.4.6-19.el6.x86_64.rpm
rpm -ivh compat-gcc-34-3.4.6-19.el6.x86_64.rpm  compat-gcc-34-c++-3.4.6-19.el6.x86_64.rpm 
rpm -ivh compat-libstdc++-33-3.2.3-69.el6.x86_64.rpm
export CC=gcc34 
export FC=f77
export F77=f77

mkdir /sw/gcc/3.3/src
cd /sw/gcc/3.3/src
tar -zxvf gcc-3.3.tar.gz
cd /sw/gcc/3.3/src/gcc-3.3
mkdir /sw/gcc/3.3/src/gcc-3.3-objdir
cd /sw/gcc/3.3/src/gcc-3.3-objdir
export CC=gcc34 
 ../gcc-3.3/configure --prefix=/sw/gcc/3.3/ --enable-languages=c,c++  -enable-multilib
#make bootstrap
make
make install
# Now compile for f77
make clean all
module load compilers/gcc-3.3
../gcc-3.3/configure --prefix=/sw/gcc/3.3 --enable-languages=f77,c,c++  -enable-multilib
make
make install

Install GCC-4.0.1
===================
No pre-req ...

cd /opt/Apps/compilers/gcc/4.0.1/src
mkdir /opt/Apps/compilers/gcc/4.0.1/gcc-4.0.1-objdir
cd /opt/Apps/compilers/gcc/4.0.1/gcc-4.0.1-objdir
 ../../4.0.1/src/gcc-4.0.1/configure --prefix=/opt/Apps/compilers/gcc/4.0.1 --enable-languages=f95,c,c++
make
make install

Newer Version of GCC
====================

install pre-req gmp and mpfr (and for gcc-4.7.1 install mpc as well)

Install GMP:
============
cd /opt/Apps/compilers/gmp/src/gmp-4.3.1
./configure --prefix=/opt/Apps/compilers/gmp/4.3.1
make
make check
make install

Install mpfr
============
cd /opt/Apps/compilers/mpfr/src/mpfr-3.1.1
./configure --prefix=/opt/Apps/compilers/mpfr/3.1.1 --with-gmp=/opt/Apps/compilers/gmp/4.3.1
make
make check
make install

Install mpc
============

mkdir -p /opt/Apps/compilers/mpc/0.8.2/src
cd /opt/Apps/compilers/mpc/0.8.2/src
./configure --prefix=/opt/Apps/compilers/mpc/0.8.2 --with-gmp=/opt/Apps/compilers/gmp/4.3.1 --with-mpfr=/opt/Apps/compilers/mpfr/3.1.1
make
make check
make install


GCC 4.4.3
===========
mkdir -p /opt/Apps/compilers/gcc/4.4.3/src
cd /opt/Apps/compilers/gcc/4.4.3/src
mkdir /opt/Apps/compilers/gcc/4.4.3/gcc-4.4.3-objdir
cd /opt/Apps/compilers/gcc/4.4.3/gcc-4.4.3-objdir
../../4.4.3/src/gcc-4.4.3/configure --prefix=/opt/Apps/compilers/gcc/4.4.3 --enable-languages=f95,c,c++ --with-gmp=/opt/Apps/compilers/gmp/4.3.1 --with-mpfr=/opt/Apps/compilers/mpfr/3.1.1
make
make install

GCC-4.7.1
=========
mkdir /opt/Apps/compilers/gcc/4.7.1/src
cd /opt/Apps/compilers/gcc/4.7.1/src
mkdir /opt/Apps/compilers/gcc/4.7.1/gcc-4.7.1-objdir
cd /opt/Apps/compilers/gcc/4.7.1/gcc-4.7.1-objdir
../../4.7.1/src/gcc-4.7.1/configure --prefix=/opt/Apps/compilers/gcc/4.7.1 --enable-languages=f95,c,c++ --with-gmp=/opt/Apps/compilers/gmp/4.3.1 --with-mpfr=/opt/Apps/compilers/mpfr/3.1.1 --with-mpc=/opt/Apps/compilers/mpc/0.8.2
make
make install