rhel6.4升级gcc到4.8.2

gcc到4.8.2"/>

rhel6.4升级gcc到4.8.2

rhel6.4升级gcc到4.7.2

默认的版本是4.4.7，需要升级到4.7.2

$ wget .3.2.tar.bz2
$ tar -jxf gmp-4.3.2.tar.bz2
$ mkdir /usr/local/gcc
$ cd gmp-4.3.2
$ ./configure --prefix=/usr/local/gcc/gmp-4.3.2 --build=x86_64-linux
$ make -j4
$ make check
$ sudo make install$ wget .4.2.tar.bz2
$ tar -jxf mpfr-2.4.2.tar.bz2
$ cd mpfr-2.4.2
$ ./configure --prefix=/usr/local/gcc/mpfr-2.4.2 --with-gmp=/usr/local/gcc/gmp-4.3.2 --build=x86_64-linux
$ make -j4
$ make check
$ sudo make install$ wget .8.1.tar.gz
$ tar -zxf mpc-0.8.1.tar.gz
$ cd mpc-0.8.1
$ ./configure --prefix=/usr/local/gcc/mpc-0.8.1 --with-gmp=/usr/local/gcc/gmp-4.3.2 --with-mpfr=/usr/local/gcc/mpfr-2.4.2 --build=x86_64-linux
$ make -j4
$ make check
$ sudo make install$ wget .7.2/gcc-4.7.2.tar.gz
$ tar -zxf gcc-4.7.2.tar.gz
$ mkdir gcc-build
$ cd gcc-build
$ ../gcc-4.7.2/configure --prefix=/usr/local/gcc/gcc-4.7.2 --enable-threads=posix --disable-checking --disable-multilib --enable-languages=c,c++ --with-gmp=/usr/local/gcc/gmp-4.3.2 --with-mpfr=/usr/local/gcc/mpfr-2.4.2 --with-mpc=/usr/local/gcc/mpc-0.8.1 --build=x86_64-linux
$ export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/gcc/mpc-0.8.1/lib:/usr/local/gcc/gmp-4.3.2/lib:/usr/local/gcc/mpfr-2.4.2/lib
$ make -j4
$ make check
$ sudo make install

修改原来的gcc

# cd /usr/bin
# mv gcc gcc447
# ln -s /usr/local/gcc/gcc-4.7.2/bin/gcc gcc
# ln -s /usr/local/gcc/gcc-4.7.2/bin/g++ g++

修改 /etc/bashrc, 增加：

LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/gcc/mpc-0.8.1/lib:/usr/local/gcc/gmp-4.3.2/lib:/usr/local/gcc/mpfr-2.4.2/lib:/usr/local/gcc/gcc-4.7.2/lib
export LD_LIBRARY_PATH

重启系统:

# reboot