CentOS 6.4 uses C ++ 11

CentOS 6.4 uses C ++ 11

CentOS 6.4 uses C ++ 11 and devtools2 needs to be installed.

1. Download the repo to your local device.

wget http://people.centos.org/tru/devtools-2/devtools-2.repo -O /etc/yum.repos.d/devtools-2.repo

2. Installation

yum install devtoolset-2-gcc devtoolset-2-binutils devtoolset-2-gcc-c++

3. Create a link

ln -s /opt/rh/devtoolset-2/root/usr/bin/* /usr/local/bin/

4. Set priority

update-alternatives --install /usr/bin/gcc gcc /usr/local/bin/gcc 100update-alternatives --install /usr/bin/g++ g++ /usr/local/bin/g++ 100

5. Or use the following method to enable

echo 'source /opt/centos/devtoolset-1.1/enable' >> /etc/profile source /opt/centos/devtoolset-1.1/enable

Among them, 3, 4, and 5 are guaranteed to take effect. You can choose either of them. I made three in sequence. There are other effective methods, such:

scl enable devtoolset-2 bashIn your .bash_profile , add at the bottom:echo "WARNING: devtoolset-2 is enabled!". /opt/rh/devtoolset-2/enable

You can open a new terminal, gcc-v and g ++-v to view version changes.

[me@localhost ~]$ gcc -vUsing built-in specs.COLLECT_GCC=gccCOLLECT_LTO_WRAPPER=/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/lto-wrapperTarget: x86_64-redhat-linuxConfigured with: ../configure --prefix=/opt/rh/devtoolset-2/root/usr --mandir=/opt/rh/devtoolset-2/root/usr/share/man --infodir=/opt/rh/devtoolset-2/root/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --enable-languages=c,c++,fortran,lto --enable-plugin --with-linker-hash-style=gnu --enable-initfini-array --disable-libgcj --with-isl=/dev/shm/home/centos/rpm/BUILD/gcc-4.8.2-20140120/obj-x86_64-redhat-linux/isl-install --with-cloog=/dev/shm/home/centos/rpm/BUILD/gcc-4.8.2-20140120/obj-x86_64-redhat-linux/cloog-install --with-mpc=/dev/shm/home/centos/rpm/BUILD/gcc-4.8.2-20140120/obj-x86_64-redhat-linux/mpc-install --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linuxThread model: posixgcc version 4.8.2 20140120 (Red Hat 4.8.2-15) (GCC) [me@localhost ~]$ g++ -vUsing built-in specs.COLLECT_GCC=g++COLLECT_LTO_WRAPPER=/opt/rh/devtoolset-2/root/usr/libexec/gcc/x86_64-redhat-linux/4.8.2/lto-wrapperTarget: x86_64-redhat-linuxConfigured with: ../configure --prefix=/opt/rh/devtoolset-2/root/usr --mandir=/opt/rh/devtoolset-2/root/usr/share/man --infodir=/opt/rh/devtoolset-2/root/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --enable-languages=c,c++,fortran,lto --enable-plugin --with-linker-hash-style=gnu --enable-initfini-array --disable-libgcj --with-isl=/dev/shm/home/centos/rpm/BUILD/gcc-4.8.2-20140120/obj-x86_64-redhat-linux/isl-install --with-cloog=/dev/shm/home/centos/rpm/BUILD/gcc-4.8.2-20140120/obj-x86_64-redhat-linux/cloog-install --with-mpc=/dev/shm/home/centos/rpm/BUILD/gcc-4.8.2-20140120/obj-x86_64-redhat-linux/mpc-install --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linuxThread model: posixgcc version 4.8.2 20140120 (Red Hat 4.8.2-15) (GCC) 

Reference: [1] http://blog.csdn.net/superye1983/article/details/48263811 [2] https://people.centos.org/tru/devtools-2/readme [3] http://qgjie456.blog.163.com/blog/static/354513672014773716756/ [4] http://blog.csdn.net/dqjyong/article/details/20474883 [5] http://hiltmon.com/blog/2015/08/09/c-plus-plus-11-on-centos-6-dot-6/ [6] http://www.tuicool.com/articles/7JrMJzj