Compile GCC 4.6.3

Let’s compiling your gcc, it’s so fun. Following is the very basic  instructions for newbie. If you want to compile with more option, you can go to homepage gcc.gnu.org/install/ for details.

Go to and find which pakage needed ftp.gnu.org/gnu

1. build & install gmp:

tar jxf gmp-4.3.2.tar.bz2 &&cd gmp-4.3.2/

./configure --prefix=/usr/local/gmp

make && make install

cd ..

2. build & install mpfr:

tar jxf mpfr-2.4.2.tar.bz2 ;cd mpfr-2.4.2/

./configure --prefix=/usr/local/mpfr --with-gmp=/usr/local/gmp

make && make install

cd ..

3. build & install mpc:

tar xzf mpc-0.8.1.tar.gz ;cd mpc-0.8.1

./configure --prefix=/usr/local/mpc --with-mpfr=/usr/local/mpfr --with-gmp=/usr/local/gmp

make && make install

cd ..

4. build & install gcc4.6.3

tar jxf gcc-4.6.3.tar.bz2 ;cd gcc-4.6.3

./configure --prefix=/usr/local/gcc --enable-threads=posix --disable-checking --disable-multilib --enable-languages=c,c++ --with-gmp=/usr/local/gmp -w-ith-mpfr=/usr/local/mpfr/ --with-mpc=/usr/local/mpc/

if [ $? -eq 0 ];then

echo "this gcc configure is success"

else

echo "this gcc configure is failed"

fi

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/mpc/lib:/usr/local/gmp/lib:/usr/local/mpfr/lib/

make && make install

[ $? -eq 0 ] && echo install success

5. set up the gcc env:

--> this is really important.

cp gcc.4.6.3.conf /etc/ld.so.conf.d/gcc.4.6.3.conf

ldconfig

mv /usr/bin/gcc /usr/bin/gcc_old

mv /usr/bin/g++ /usr/bin/g++_old

mv /usr/bin/c++ /usr/bin/c++_old

ln -s -f /usr/local/gcc/bin/gcc /usr/bin/gcc

ln -s -f /usr/local/gcc/bin/g++ /usr/bin/g++

ln -s -f /usr/local/gcc/bin/c++ /usr/bin/c++

cp /usr/local/gcc/lib64/libstdc++.so.6.0.16 /usr/lib64/.

mv /usr/lib64/libstdc++.so.6 /usr/lib64/libstdc++.so.6.bak

ln -s -f /usr/lib64/libstdc++.so.6.0.16 /usr/lib64/libstdc++.so.6

6. finished.

you could run gcc --version to check if the current gcc version is gcc4.6.3, and also need to check g++, to see if the version is changed to g++4.6.3 too.