centos7 gcc升级

1. 安装必备

yum groupinstall "Development Tools"

yum install glibc-static libstdc++-static

2. 编译安装 gcc

http://ftp.tsukuba.wide.ad.jp/software/gcc/releases/ (下载需要的高版本)

another place recommendated is ustc opensouce mirror https://mirrors.ustc.edu.cn/gnu/gcc/

https://mirrors.ustc.edu.cn/gnu/gcc/gcc-7.3.0/gcc-7.3.0.tar.gz

wget http://ftp.tsukuba.wide.ad.jp/software/gcc/releases/gcc-7.3.0/gcc-7.3.0.tar.gz

tar -zxvf  gcc-7.3.

cd gcc-7.3.

./contrib/download_prerequisites   #安装依赖库,以前升级gcc非常麻烦，因为gcc依赖了mpfr、gmp、mpc 和isl共四个库，下载也麻烦 ，现在简单了

mkdir build

cd build

#在gcc目录，执行配置命令：               ./configure  --prefix=/usr/local/gcc7.3.0 --enable-multilib;

#如果只需要支持c,c++编译器，则执行配置命令：./configure  --prefix=/usr/local/gcc7.3.0 --disable-multilib --enable-languages=c,c++

# –enable-checking=release 增加一些检查，也可以–disable-checking生成的编译器在编译过程中不做额外检查

#–enable-languages=c,c++ 你要让你的gcc支持的编程语言

#–disable-multilib 取消多目标库编译(取消32位库编译)

../configure --prefix=/usr/local/gcc7.3.0 --enable-checking=release --enable-languages=c,c++ --disable-multilib

make    # or make -j  which could determin the parallel compiling job number.

make install   #here would install to the folder /usr/local/gcc7.3.0 which is specified by argument --prefix

optional step:

uninstall lower version of gcc if you has already installed in the system.

rpm -q gcc       #query if gcc has installed

rpm -q gcc-c++   #query if gcc-c++ has installed

rpm -e   {package name which has listed if you have gcc installed, on centos , it maybe list as follows}

#gcc-4.8.-.el7_4..x86_64

#gcc-c++-4.8.-.el7_4..x86_64

3. add gcc to the system path

vim /etc/profile

add the following content at the end of file:

export PATH=$PATH:/usr/local/gcc7.3.0/bin

or just create a soft link to /usr/bin

sudo ln -s /usr/local/gcc7.3.0/bin/gcc /usr/bin/gcc

sudo ln -s /usr/local/gcc7.3.0/bin/g++ /usr/bin/g++

4. view the gcc version

gcc --version

g++ --version

output:

4. FAQ

/lib64/libstdc++.so.6: version `GLIBCXX_3.4.21’ not found (required

solution:

find / -name libstdc++.so*

output:

/usr/lib64/libstdc++.so.6
/usr/lib64/libstdc++.so.6.0.19
/usr/lib64/libstdc++.so.6.0.24
/usr/share/gdb/auto-load/usr/lib64/libstdc++.so.6.0.19-gdb.py
/usr/share/gdb/auto-load/usr/lib64/libstdc++.so.6.0.19-gdb.pyc
/usr/share/gdb/auto-load/usr/lib64/libstdc++.so.6.0.19-gdb.pyo
/usr/local/lib64/libstdc++.so.6.0.24
/usr/local/lib64/libstdc++.so.6
/usr/local/lib64/libstdc++.so
/usr/local/lib64/libstdc++.so.6.0.24-gdb.py

找到这个这个目录下面的libstdc++.so.6.0.xx,我的是24

cp /usr/local/lib64/libstdc++.so.6.0. /usr/lib64

ldconfig   #this is required

5. Alternative solution( not recommondated)

5.1 install devtoolset-6

sudo yum install centos-release-scl

sudo yum install devtoolset-

scl enable devtoolset- bash

sudo yum list devtoolset-\*

5.2. change default gcc version using command like:

sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6.3

sudo update-alternatives --config gcc

if u don't want gcc 6 as your default gcc version, you can enable it just in the current terminal:

scl enable devtoolset- bash

reference:
https://www.cnblogs.com/dalanjing/p/10618575.html

巴特西

centos7 gcc升级

最新文章

热门文章