CentOS6.5 64位GCC从4.4.2升级到4.8.5实录

1.资源准备

首先需要准备的资源有

gcc-4.8.5.tar.gz，

然后可能用到的有

gmp-4.3.2.tar.bz2，mpfr-3.1.4.tar.bz，mpc-1.0.3.tar.gz，

中途用到的依赖库可能会有

autogen-5.16.2.tar.gz

2.安装顺序

首先gmp-4.3.2.tar.bz2，mpfr-3.1.4.tar.bz，mpc-1.0.3.tar.gz，这三个必须要安装，否则，他会提示错误。如下：

安装gmp:

./configure &&make &&make install

安装mpfr

./configure --with-gmp=/usr/local/gmp-4.3.2 &&make&&make check&&make install

安装mac

./configure --with-gmp=/usr/local/gmp-4.3.2 --with-mpfr=/usr/local/mpfr-3.1.4&&make&&make check&&make install

安装gcc

[root@ximena gcc-4.8.5]# export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib:/usr/local/mpc-1.0.3/lib:/usr/local/gmp-4.3.2/lib:/usr/local/mpfr-3.1.4/lib

[root@ximena gcc-4.8.5]# ./configure --prefix=/usr/local/gcc-4.8.5 --with-gmp=/usr/local/gmp-4.3.2 --with-mpfr=/usr/local/mpfr-3.1.4 --with-mpc=/usr/local/mpc-1.0.3&&make&&make install

gcc安装时间比较长，如果没有意外的话，出现下面的界面，则说明安装成功

libtool: install: /usr/bin/install -c .libs/libatomic.so.1.0.0 /usr/local/gcc-4.8.5/lib/../lib64/libatomic.so.1.0.0

libtool: install: (cd /usr/local/gcc-4.8.5/lib/../lib64 && { ln -s -f libatomic.so.1.0.0 libatomic.so.1 || { rm -f libatomic.so.1 && ln -s libatomic.so.1.0.0 libatomic.so.1; }; })

libtool: install: (cd /usr/local/gcc-4.8.5/lib/../lib64 && { ln -s -f libatomic.so.1.0.0 libatomic.so || { rm -f libatomic.so && ln -s libatomic.so.1.0.0 libatomic.so; }; })

libtool: install: /usr/bin/install -c .libs/libatomic.lai /usr/local/gcc-4.8.5/lib/../lib64/libatomic.la

libtool: install: /usr/bin/install -c .libs/libatomic.a /usr/local/gcc-4.8.5/lib/../lib64/libatomic.a

libtool: install: chmod 644 /usr/local/gcc-4.8.5/lib/../lib64/libatomic.a

libtool: install: ranlib /usr/local/gcc-4.8.5/lib/../lib64/libatomic.a

libtool: finish: PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/sbin" ldconfig -n /usr/local/gcc-4.8.5/lib/../lib64

ldconfig: /usr/local/gcc-4.8.5/lib/../lib64/libstdc++.so.6.0.19-gdb.py is not an ELF file - it has the wrong magic bytes at the start.

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

Libraries have been installed in:

   /usr/local/gcc-4.8.5/lib/../lib64

If you ever happen to want to link against installed libraries

in a given directory, LIBDIR, you must either use libtool, and

specify the full pathname of the library, or use the `-LLIBDIR'

flag during linking and do at least one of the following:

   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable

     during execution

   - add LIBDIR to the `LD_RUN_PATH' environment variable

     during linking

   - use the `-Wl,-rpath -Wl,LIBDIR' linker flag

   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for

more information, such as the ld(1) and ld.so(8) manual pages.

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

make[4]: Nothing to be done for `install-data-am'.

make[4]: Leaving directory `/root/download/gcc-4.8.5/x86_64-unknown-linux-gnu/libatomic'

make[3]: Leaving directory `/root/download/gcc-4.8.5/x86_64-unknown-linux-gnu/libatomic'

make[2]: Leaving directory `/root/download/gcc-4.8.5/x86_64-unknown-linux-gnu/libatomic'

make[1]: Leaving directory `/root/download/gcc-4.8.5'

3.建立软连接命令

[root@ximena ~]# sudo ln -s /usr/local/gcc-4.8.5/bin/gcc /usr/bin/gcc11

[root@ximena ~]# gcc11 -v

Using built-in specs.

COLLECT_GCC=gcc11

COLLECT_LTO_WRAPPER=/usr/local/gcc-4.8.5/libexec/gcc/x86_64-unknown-linux-gnu/4.8.5/lto-wrapper

Target: x86_64-unknown-linux-gnu

Configured with: ./configure --prefix=/usr/local/gcc-4.8.5 --with-gmp=/usr/local/gmp-4.3.2 --with-mpfr=/usr/local/mpfr-3.1.4 --with-mpc=/usr/local/mpc-1.0.3

Thread model: posix

gcc version 4.8.5 (GCC) 

[root@ximena ~]# sudo ln -s /usr/local/gcc-4.8.5/bin/g++ /usr/bin/g++11

[root@ximena ~]# g++11 -v

Using built-in specs.

COLLECT_GCC=g++11

COLLECT_LTO_WRAPPER=/usr/local/gcc-4.8.5/libexec/gcc/x86_64-unknown-linux-gnu/4.8.5/lto-wrapper

Target: x86_64-unknown-linux-gnu

Configured with: ./configure --prefix=/usr/local/gcc-4.8.5 --with-gmp=/usr/local/gmp-4.3.2 --with-mpfr=/usr/local/mpfr-3.1.4 --with-mpc=/usr/local/mpc-1.0.3

Thread model: posix

gcc version 4.8.5 (GCC) 

ok，至此成功，后面就可以愉快的让服务器支持c++11了