安装g++，在centos上执行yum -y install gcc gcc-c++ libstdc++-devel

Loaded plugins: fastestmirror, security

Loading mirror speeds from cached hostfile

* base: mirrors.163.com

* extras: mirrors.cqu.edu.cn

* updates: mirrors.nwsuaf.edu.cn

Setting up Install Process

Resolving Dependencies

--> Running transaction check

---> Package gcc.x86_64 0:4.4.7-3.el6 will be updated

--> Processing Dependency: gcc = 4.4.7-3.el6 for package: gcc-gfortran-4.4.7-3.el6.x86_64

---> Package gcc.x86_64 0:4.4.7-11.el6 will be an update

--> Processing Dependency: libgomp = 4.4.7-11.el6 for package: gcc-4.4.7-11.el6.x86_64

--> Processing Dependency: cpp = 4.4.7-11.el6 for package: gcc-4.4.7-11.el6.x86_64

--> Processing Dependency: libgcc >= 4.4.7-11.el6 for package: gcc-4.4.7-11.el6.x86_64

---> Package gcc-c++.x86_64 0:4.4.7-3.el6 will be updated

---> Package gcc-c++.x86_64 0:4.4.7-11.el6 will be an update

--> Processing Dependency: libstdc++ = 4.4.7-11.el6 for package: gcc-c++-4.4.7-11.el6.x86_64

---> Package libstdc++-devel.x86_64 0:4.4.7-3.el6 will be updated

---> Package libstdc++-devel.x86_64 0:4.4.7-11.el6 will be an update

--> Running transaction check

---> Package cpp.x86_64 0:4.4.7-3.el6 will be updated

---> Package cpp.x86_64 0:4.4.7-11.el6 will be an update

---> Package gcc-gfortran.x86_64 0:4.4.7-3.el6 will be updated

---> Package gcc-gfortran.x86_64 0:4.4.7-11.el6 will be an update

--> Processing Dependency: libgfortran = 4.4.7-11.el6 for package: gcc-gfortran-4.4.7-11.el6.x86_64

---> Package libgcc.x86_64 0:4.4.7-3.el6 will be updated

---> Package libgcc.x86_64 0:4.4.7-11.el6 will be an update

---> Package libgomp.x86_64 0:4.4.7-3.el6 will be updated

---> Package libgomp.x86_64 0:4.4.7-11.el6 will be an update

---> Package libstdc++.x86_64 0:4.4.7-3.el6 will be updated

---> Package libstdc++.x86_64 0:4.4.7-11.el6 will be an update

--> Running transaction check

---> Package libgfortran.x86_64 0:4.4.7-3.el6 will be updated

---> Package libgfortran.x86_64 0:4.4.7-11.el6 will be an update

--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================================

Package Arch Version Repository Size

=============================================================================================

Updating:

gcc x86_64 4.4.7-11.el6 base 10 M

gcc-c++ x86_64 4.4.7-11.el6 base 4.7 M

libstdc++-devel x86_64 4.4.7-11.el6 base 1.6 M

Updating for dependencies:

cpp x86_64 4.4.7-11.el6 base 3.7 M

gcc-gfortran x86_64 4.4.7-11.el6 base 4.7 M

libgcc x86_64 4.4.7-11.el6 base 102 k

libgfortran x86_64 4.4.7-11.el6 base 267 k

libgomp x86_64 4.4.7-11.el6 base 133 k

libstdc++ x86_64 4.4.7-11.el6 base 294 k

Transaction Summary

=============================================================================================

Upgrade 9 Package(s)

Total download size: 26 M

Downloading Packages:

(1/9): cpp-4.4.7-11.el6.x86_64.rpm | 3.7 MB 00:04

(2/9): gcc-4.4.7-11.el6.x86_64.rpm | 10 MB 00:10

(3/9): gcc-c++-4.4.7-11.el6.x86_64.rpm | 4.7 MB 00:04

(4/9): gcc-gfortran-4.4.7-11.el6.x86_64.rpm | 4.7 MB 00:05

(5/9): libgcc-4.4.7-11.el6.x86_64.rpm | 102 kB 00:00

(6/9): libgfortran-4.4.7-11.el6.x86_64.rpm | 267 kB 00:00

(7/9): libgomp-4.4.7-11.el6.x86_64.rpm | 133 kB 00:00

(8/9): libstdc++-4.4.7-11.el6.x86_64.rpm | 294 kB 00:00

(9/9): libstdc++-devel-4.4.7-11.el6.x86_64.rpm | 1.6 MB 00:01

---------------------------------------------------------------------------------------------

Total 951 kB/s | 26 MB 00:27

Running rpm_check_debug

Running Transaction Test Transaction Test Succeeded

Running Transaction

Updating : libgcc-4.4.7-11.el6.x86_64 1/18

Updating : libstdc++-4.4.7-11.el6.x86_64 2/18

Updating : libstdc++-devel-4.4.7-11.el6.x86_64 3/18

Updating : cpp-4.4.7-11.el6.x86_64 4/18

Updating : libgomp-4.4.7-11.el6.x86_64 5/18

Updating : gcc-4.4.7-11.el6.x86_64 6/18

Updating : libgfortran-4.4.7-11.el6.x86_64 7/18

Updating : gcc-gfortran-4.4.7-11.el6.x86_64 8/18

Updating : gcc-c++-4.4.7-11.el6.x86_64 9/18

Cleanup : gcc-c++-4.4.7-3.el6.x86_64 10/18

Cleanup : gcc-gfortran-4.4.7-3.el6.x86_64 11/18

Cleanup : libstdc++-devel-4.4.7-3.el6.x86_64 12/18

Cleanup : gcc-4.4.7-3.el6.x86_64 13/18

Cleanup : libstdc++-4.4.7-3.el6.x86_64 14/18

Cleanup : libgcc-4.4.7-3.el6.x86_64 15/18

Cleanup : cpp-4.4.7-3.el6.x86_64 16/18

Cleanup : libgomp-4.4.7-3.el6.x86_64 17/18

Cleanup : libgfortran-4.4.7-3.el6.x86_64 18/18

Verifying : libstdc++-4.4.7-11.el6.x86_64 1/18

Verifying : gcc-4.4.7-11.el6.x86_64 2/18

Verifying : gcc-c++-4.4.7-11.el6.x86_64 3/18

Verifying : libgfortran-4.4.7-11.el6.x86_64 4/18

Verifying : libgcc-4.4.7-11.el6.x86_64 5/18

Verifying : libgomp-4.4.7-11.el6.x86_64 6/18

Verifying : libstdc++-devel-4.4.7-11.el6.x86_64 7/18

Verifying : cpp-4.4.7-11.el6.x86_64 8/18

Verifying : gcc-gfortran-4.4.7-11.el6.x86_64 9/18

Verifying : gcc-c++-4.4.7-3.el6.x86_64 10/18

Verifying : libgfortran-4.4.7-3.el6.x86_64 11/18

Verifying : gcc-4.4.7-3.el6.x86_64 12/18

Verifying : libgomp-4.4.7-3.el6.x86_64 13/18

Verifying : libgcc-4.4.7-3.el6.x86_64 14/18

Verifying : cpp-4.4.7-3.el6.x86_64 15/18

Verifying : gcc-gfortran-4.4.7-3.el6.x86_64 16/18

Verifying : libstdc++-devel-4.4.7-3.el6.x86_64 17/18

Verifying : libstdc++-4.4.7-3.el6.x86_64 18/18

Updated:

gcc.x86_64 0:4.4.7-11.el6 gcc-c++.x86_64 0:4.4.7-11.el6

libstdc++-devel.x86_64 0:4.4.7-11.el6

Dependency Updated:

cpp.x86_64 0:4.4.7-11.el6 gcc-gfortran.x86_64 0:4.4.7-11.el6

libgcc.x86_64 0:4.4.7-11.el6 libgfortran.x86_64 0:4.4.7-11.el6

libgomp.x86_64 0:4.4.7-11.el6 libstdc++.x86_64 0:4.4.7-11.el6

Complete!