1, download gcc-4.8.5.tar.bz2
2, tar-xvf gcc-4.8.5.tar.bz2 to extract as gcc-4.8.5
3, cd gcc-4.8.5 file into the directory
4,. / Contrib / download_prerequisites executed in gcc-4.8.5 directory of the command, which will be three new files in gcc-4.8.5 directory, which is dependent on the installation of the Big Three, the script will automatically download, decompression.
It should be noted that the step operation is performed under gcc-4.8.5 directory, the result of the implementation is to create mpfr in gcc-4.8.5 directory, gmp, mpc three soft connection.
5, cd .. returns to the parent directory
6, mkdir gcc-build-4.8.5 and gcc-4.8.5 this file in the same directory
7, cd gcc-build-4.8.5 into the directory
8、../gcc-4.8.5/configure --prefix=/usr/local/gcc --enable-language=c,c++ --build=x86_64-linux
Create a new folder under the gcc / usr / local directory for storing files to compile the results.
9、make
make an error is encountered
/usr/include/gnu/stubs.h:7:27: fatal error: gnu/stubs-32.h: No such file or directory
解决：yum install glibc-devel.i686 libstdc++-devel.i686或者--disable-multilib
If you do not put on a c compiler in advance, and then later uninstall
yum -y install gcc gcc-c++ gdb
10、make install
11, set the environment variable
cd back to normal user directory
you .bashrc
shift + G entered last line export PATH = / usr / local / gcc / bin: $ PATH
esc,: wq save and exit
source .bashrc
12, the test installation
g ++ -v
g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/local/gcc/libexec/gcc/x86_64-linux/4.8.5/lto-wrapper
Target: x86_64-linux
Configured with: ../gcc-4.8.5/configure --prefix=/usr/local/gcc --enable-language=c,c++ --build=x86_64-linux
Thread model: posix
gcc version 4.8.5 (GCC)
13, remove the old version
yum remove gcc
yum remove gcc-c++
14, add the man to help
vi /etc/man.config add the last line in the configuration file
Your MANPATH / usr / local / gcc / report this content share / man
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