環境:
系統:CentOS 7
編譯安裝:
下載源碼包:https://gcc.gnu.org/
安裝依賴庫:
安裝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
安裝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
安裝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
安裝依賴包
# yum install?libgcc gcc-c++?
安裝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
編輯變量:
# vi /etc/ld.so.conf
/usr/lib64
/usr/local/gmp/lib
/usr/local/mpfr/lib
/usr/local/mpc/lib
更新狀態庫
# ldconfig -v
備份系統默認的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創建軟鏈接
# 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