Upgrading gcc compiler

cd /usr/local
mkdir gcc
cd gcc
wget ftp://mirrors.kernel.org/gnu/gcc/gcc…-4.2.2.tar.bz2
tar -jxvf gcc-core-4.2.2.tar.bz2
mkdir obj
cd obj
At this point we need to check with what options gcc was compiled at your system before. This can be done using gcc -v. You need to copy all parameters to configure command. Note how we run configure – from obj directory only. Here is an example from my PC
../gcc-4.2.2/configure –prefix=/usr –mandir=/usr/share/man –infodir=/usr/share/info –enable-shared –enable-threads=posix –disable-checking –with-system-zlib –enable-__cxa_atexit –disable-libunwind-exceptions –enable-java-awt=gtk –host=i386-redhat-linux
make install

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