系统更新gcc

1.查看系统gcc版本

[root@phpadmin ~]# gcc --version
gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4)
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 2.下载安装gcc

[root@phpadmin ~]# cd /usr/local/src/
[root@phpadmin src]# wget http://ftp.gnu.org/gnu/gcc/gcc-6.3.0/gcc-6.3.0.tar.bz2
[root@phpadmin src]# tar -jxvf gcc-6.3.0.tar.bz2
[root@phpadmin src]# cd gcc-6.3.0
[root@phpadmin gcc-6.3.0]# ./contrib/download_prerequisites
[root@phpadmin gcc-6.3.0]# mkdir gcc-build-6.3.0
[root@phpadmin gcc-6.3.0]# ../configure -enable-checking=release -enable-languages=c,c++ -disable-multilib
[root@phpadmin gcc-6.3.0]# make
[root@phpadmin gcc-6.3.0]# make install

 3.查看安装

[root@ssl01 ~]# ls /usr/local/bin | grep gcc
gcc
gcc-ar
gcc-nm
gcc-ranlib
x86_64-pc-linux-gnu-gcc
x86_64-pc-linux-gnu-gcc-6.3.0
x86_64-pc-linux-gnu-gcc-ar
x86_64-pc-linux-gnu-gcc-nm
x86_64-pc-linux-gnu-gcc-ranlib

 4.重启系统，查看gcc版本

[root@ssl01 ~]# gcc -v	

 5.运行以下命令检查动态库

[root@ssl01 ~]# strings /usr/lib64/libstdc++.so.6 | grep GLIBC	
GLIBCXX_3.4
GLIBCXX_3.4.1
GLIBCXX_3.4.2
GLIBCXX_3.4.3
GLIBCXX_3.4.4
GLIBCXX_3.4.5
GLIBCXX_3.4.6
GLIBCXX_3.4.7
GLIBCXX_3.4.8
GLIBCXX_3.4.9
GLIBCXX_3.4.10
GLIBCXX_3.4.11
GLIBCXX_3.4.12
GLIBCXX_3.4.13
GLIBC_2.2.5
GLIBC_2.3
GLIBC_2.4
GLIBC_2.3.2
GLIBCXX_FORCE_NEW
GLIBCXX_DEBUG_MESSAGE_LENGTH

# 执行以下命令，查找编译gcc时生成的最新动态库
[root@ssl01 ~]# find / -name "libstdc++.so*"
/usr/share/gdb/auto-load/usr/lib64/libstdc++.so.6.0.13-gdb.pyo
/usr/share/gdb/auto-load/usr/lib64/libstdc++.so.6.0.13-gdb.py
/usr/share/gdb/auto-load/usr/lib64/libstdc++.so.6.0.13-gdb.pyc
/usr/share/gdb/auto-load/usr/lib/libstdc++.so.6.0.13-gdb.pyo
/usr/share/gdb/auto-load/usr/lib/libstdc++.so.6.0.13-gdb.py
/usr/share/gdb/auto-load/usr/lib/libstdc++.so.6.0.13-gdb.pyc
/usr/lib64/libstdc++.so.6
/usr/lib64/libstdc++.so.5.0.7
/usr/lib64/libstdc++.so.5
/usr/lib64/libstdc++.so.6.0.13
/usr/local/lib64/libstdc++.so.6
/usr/local/lib64/libstdc++.so.6.0.22
/usr/local/lib64/libstdc++.so.6.0.22-gdb.py
/usr/local/lib64/libstdc++.so
/usr/local/src/gcc-6.3.0/gcc-build-6.3.0/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6
/usr/local/src/gcc-6.3.0/gcc-build-6.3.0/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6.0.22
/usr/local/src/gcc-6.3.0/gcc-build-6.3.0/prev-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so
/usr/local/src/gcc-6.3.0/gcc-build-6.3.0/stage1-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6
/usr/local/src/gcc-6.3.0/gcc-build-6.3.0/stage1-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6.0.22
/usr/local/src/gcc-6.3.0/gcc-build-6.3.0/stage1-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so
/usr/local/src/gcc-6.3.0/gcc-build-6.3.0/x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6
/usr/local/src/gcc-6.3.0/gcc-build-6.3.0/x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6.0.22
/usr/local/src/gcc-6.3.0/gcc-build-6.3.0/x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so
/usr/lib/gcc/x86_64-redhat-linux/4.4.4/libstdc++.so
/usr/lib/gcc/x86_64-redhat-linux/4.4.4/32/libstdc++.so

 6.将上面的最新动态库libstdc++.so.6.0.22复制到/usr/lib64目录下

[root@ssl01 ~]# cd /usr/lib64
[root@ssl01 ~]# cp /usr/local/src/gcc-6.3.0/gcc-build-6.3.0/stage1-x86_64-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6.0.22 /usr/lib64/

 7.删除原来软连接或重命名老的GCC

[root@ssl01 ~]# rm -rf libstdc++.so.6
[root@ssl01 ~]# mv -v /usr/lib64/libstdc++.so.6{,.old} 

 8.将默认库的软连接指向最新动态库

[root@ssl01 ~]# cd /usr/lib64
[root@ssl01 ~]# ln -s libstdc++.so.6.0.22 libstdc++.so.6

 9.默认动态库升级完成。重新运行以下命令检查动态库

[root@ssl01 ~]# strings /usr/lib64/libstdc++.so.6 | grep GLIBC

 

 

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http://www.cnblogs.com/xyjdreamer/p/5974144.html
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