CentOS6.5 upgrade to manually install gcc4.8.2, centos6.5gcc4.8.2

CentOS6.5 upgrade to manually install gcc4.8.2, centos6.5gcc4.8.2

 

I. Simple Installation

The operating environment CentOS6.5 64bit, the original version 4.4.7, cannot support C ++ 11 features ~, Upgrade to 4.8.2

Cannot be upgraded using yum. You need to manually download the installation package and compile it.

1.1 obtain and decompress the installation package

wget http://ftp.gnu.org/gnu/gcc/gcc-4.8.2/gcc-4.8.2.tar.bz2tar -jxvf gcc-4.8.2.tar.bz2

Of course, there are some gcc version for download in the http://ftp.gnu.org/gnu/gcc, the latest version has 4.9.2.

1.2 download dependencies for compilation

Reference [1]: this magical script file will help us download, configure, and install dependency libraries, saving us a lot of time and effort.

cd gcc-4.8.0　./contrib/download_prerequisites　

1.3 create a directory for storing compiled files.

mkdir gcc-build-4.8.2cd gcc-build-4.8.2

1.4 generate Makefile

../configure -enable-checking=release -enable-languages=c,c++ -disable-multilib

1.5 compile (Note: This step is very time-consuming)

make -j4

-The j4 option is the make Optimization for multi-core processors. If it fails, useMakeAnd the related optimization options can be moved to the references [2].

An error occurred while installing this step. Error description:

Compilation terminated. make [5]: *** [_ gcov_merge_add.o] Error 1 make [5]: leaving directory '/home/imdb/gcc-4.8.2/gcc-build-4.8.2/x86_64-unknown-linux-gnu/32/libgcc 'make [4]: *** [multi-do] Error 1 make [4]: leaving directory '/home/imdb/gcc-4.8.2/gcc-build-4.8.2/x86_64-unknown-linux-gnu/libgcc 'make [3]: *** [all-multi] Error 2 make [3]: * ** waiting for unfinished tasks .... make [3]: Leaving directory '/home/imdb/gcc-4.8.2/gcc-build-4.8.2/x86_64-unknown-linux-gnu/libgcc 'make [2]: *** [all-stage1-target-libgcc] Error 2 make [2]: leaving directory '/home/imdb/gcc-4.8.2/gcc-build-4.8.2' make [1]: *** [stage1-bubble] Error 2 make [1]: leaving directory '/home/imdb/gcc-4.8.2/gcc-build-4.8.2' make: *** [all] Error 2

Let's take a look. The errors are concentrated inX86_64unknown-linux-gnu/32/libgccAndX86_64-unknown-linux-gnu/libgcc

Install the following two software packages (for CentOS6.X only) based on references [3 ):

sudo yum -y install glibc-devel.i686 glibc-devel

In the process, the CPU is basically full:

1.6 Installation

sudo make install

 

Ii. Verify Installation

Restart and view the gcc version:

gcc -v

I tried to write a program segment tryCpp11.cc with the C ++ 11 feature and used shared_ptr.

 1 //tryCpp11.cc 2 #include <iostream> 3 #include <memory> 4  5 int main() 6 { 7     std::shared_ptr<int> pInt(new int(5)); 8     std::cout << *pInt << std::endl; 9     return 0;10 }

Verification file:

g++ -std=c++11 -o tryCpp11 tryCpp11.cc./tryCpp11

Iii. Other installation:

-Install on Ubuntu: References [3]

-Non-simple installation: References [4]

-Coexistence of multiple gcc versions:None

 

Iv. References

[1] reference main installation steps http://www.cnblogs.com/ytjjyy/p/4008096.html

Note: the second half of this article is very useful in solving dynamic libraries.

[2] make-j4 discussion http://stackoverflow.com/questions/15289250/make-j4-or-j8

[3] libgcc error http://argcv.com/articles/2946.c/comment-page-1

Note: This article provides the installation method of gcc4.7 on Ubuntu12.04.

[4] non-simple installation http://my.oschina.net/u/728245/blog/184550 another: graphic version