nix

Reference data: The Definitive Guide to GCC, second edition, William von Hagen
Environment: Ubuntu 7.10
Prerequisite: Prepare about 1.5 GB free disk space for building and installing GCC.

1. Install essential utilities (root)

apt-get install bash binutils bison dejagnu flex gcc g++ gnat make tar tcl(8.4) expect gperf autoconf automake texinfo gettext gfortran gcj autogen

2. Install the source code, set up the configuration settings, and compile the compilers (user)
    Download gcc-VERSION.bz2 and gcc-testsuite-VERSION.bz2 to ~/src directory. /* replace VERSION with the appropriate numeric value for the version of GCC that we are using */

mkdir -p ~/src/gcc-obj
cd ~/src
tar jxf gcc-VERSION.bz2                                  /* ~/src/ */
tar jxf gcc-testsuite-VERSION.bz2                        /* ~/src/ */
cd ~/src/gcc-VERSION                                     /* source directory */
cd ~/src/gcc-obj                                         /* build directory */
../gcc-VERSION/configure --prefix=/usr/local/gccVERSION  /* run configuration script & indicate the directory for installing GCC */
make bootstrap                                           /* ~/src/gcc-obj/, it may take several hours to finish this job */

3. Test the build, optional operation (user)

make -k check                                            /* ~/src/gcc-obj/, make sure tcl, expect, gcc-testsuite, and dejagnu are installed */

    Submit the test results to the GCC project by using teh test_summary script

~/src/gcc-VERSION/contrib/test_summary [-p extra_info.txt] -m gcc-testresults@gcc.gnu.org | /bin/sh

4. Install GCC (root)

cd ~/src/gcc-obj
make install                                             /* ~/src/gcc-obj/ */
ldconfig -v                                              /* update the dynamic linker's chche file, locate the new shared libraries */

5. Change the PATH environment variable setting
    Add /usr/local/gccVERSION/bin to the PATH environment variable and make this setting before the original PATH setting of GCC.