Linux下安装gcc-5.3.0

• 前言
  安装ubuntu 14.04后，默认gcc为4.8.4，现在需要安装gcc-5.3.0，安装前需要先安装依赖库GMP4.3.2，MPFR2.4.2，MPC0.8.1

1.安装m4

sudo apt-get install m4

2.安装GMP4.3.2

wget ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-4.3.2.tar.bz2
tar -jxvf gmp-4.3.2.tar.bz2
cd gmp-4.3.2
./configure
make -j4
make install

3.安装MPFR2.4.2

wget ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-2.4.2.tar.bz2
tar -jxvf gmpfr-2.4.2.tar.bz2
cd mpfr-2.4.2
./configure
make -j4
make install

4.安装MPC0.8.1

wget ftp://gcc.gnu.org/pub/gcc/infrastructure/mpc-0.8.1.tar.gz
tar -zxvf mpc-0.8.1.tar.gz
cd mpc-0.8.1
./configure
make -j4
make install

5.安装autoconf-2.69.tar.gz

wget http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
tar -zxvf autoconf-2.69.tar.gz
cd autoconf-2.69
./configure
make -j4
make install

6.安装isl-0.12.2.tar.bz2

wget ftp://gcc.gnu.org/pub/gcc/infrastructure/isl-0.12.2.tar.bz2
tar -jxvf isl-0.12.2.tar.bz2
cd isl-0.12.2
./configure
make -j4
make install

7.配置共享库路径

LD_LIBRARY_PATH="/usr/local/lib"

8.安装gcc 5.3.0

wget ftp.gnu.org/gnu/gcc/gcc-5.3.0/gcc-5.3.0.tar.gz
tar -zxvf gcc-5.3.0.tar.gz
cd /usr/local/
mkdir gcc-5.3.0
cd gcc-5.3.0
/mnt/hgfs/projects/gcc-5.3.0/configure -prefix=/usr/local/gcc-5.3.0/ --enable-threads=posix --disable-checking --enable-languages=c,c++ --disable-multilib --disable-nls --program-suffix=5.3.0
make
make install

9.建立软链接

rm /usr/bin/gcc
ln -sv /usr/local/gcc-5.3.0/bin/gcc5.3.0 /usr/bin/gcc
rm /usr/bin/g++
ln -sv /usr/local/gcc-5.3.0/bin/g++5.3.0 /usr/bin/g++

10.验证

gcc -v

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