gcc升级源码安装

环境:

系统:CentOS 7

编译安装:

下载源码包:https://gcc.gnu.org/

安装依赖库:

安装gmp

# wget https://gmplib.org/download/gmp/gmp-6.1.2.tar.xz

# tar xvf gmp-6.1.2.tar.xz

# cd gmp-6.1.2

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

# make && make install

安装mpfr

# wget http://www.mpfr.org/mpfr-current/mpfr-3.1.5.tar.gz

# tar xvf mpfr-3.1.5.tar.gz

# cd mpfr-3.1.5

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

# make && make install

安装mpc

# wget ftp://ftp.gnu.org/gnu/mpc/mpc-1.0.3.tar.gz

# tar xvf mpc-1.0.3.tar.gz

# cd mpc-1.0.3

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

# make && make install

安装依赖包

# yum install libgcc gcc-c++ 

安装gcc

# tar xvf gcc-6.4.0.tar.gz

# cd gcc-6.4.0

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

# make -j 8

# make install

编辑变量:

# vi /etc/ld.so.conf

/usr/lib64

/usr/local/gmp/lib

/usr/local/mpfr/lib

/usr/local/mpc/lib

更新状态库

# ldconfig -v

备份系统默认的gcc版本

# mv /usr/bin/gcc /usr/bin/gcc-bak

# mv /usr/bin/g++ /usr/bin/g++-bak

# mv /usr/bin/c++ /usr/bin/c++-bak

新版本gcc创建软链接

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

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

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

# ln -s /usr/local/gcc/lib64/libstdc++.so.6.0.22 /usr/lib64/libstdc++.so.6

查看gcc版本

# gcc --version

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