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解决类似 /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.21′ not found 的问题

源码编译升级安装了gcc后,编译程序或运行其它程序时,有时会出现类似/usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.21' not found的问题。这是因为升级gcc时,生成的动态库没有替换老版本gcc的动态库导致的,将gcc最新版本的动态库替换系统中老版本的动态库即可解决。

1. 问题原因分析

为了安装最新版本的Node.js(最新版本的Node.js使用了C++ 11中,而C++ 11需要code>gcc 4.8+才能支持),将gcc升级到了当前最新版本v 5.2.0。升级后,成功编译安装了新版本的Node.js(v 4.2.1),但运行时程序时出现了以下错误:

node: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by node)
node: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by node)
node: /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by node)

运行以下命令检查动态库:

strings /usr/lib64/libstdc++.so.6 | grep GLIBC

输出结果如下:

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
GLIBCXX_FORCE_NEW
GLIBCXX_DEBUG_MESSAGE_LENGTH

从以上输出可以看出,gcc的动态库还是旧版本的。说明出现这些问题,是因为升级gcc时,生成的动态库没有替换老版本gcc的动态库。

2. 问题处理

执行以下命令,查找编译gcc时生成的最新动态库:

find / -name "libstdc++.so*"

输出如下:

/home/gcc-5.2.0/gcc-temp/stage1-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so
/home/gcc-5.2.0/gcc-temp/stage1-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6
/home/gcc-5.2.0/gcc-temp/stage1-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6.0.21  //最新动态库
……

/home/gcc-5.2.0/gcc-temp是升级gcc时的输出目录。

将上面的最新动态库libstdc++.so.6.0.21复制到/usr/lib64目录下:

cp /home/gcc-5.2.0/gcc-temp/stage1-x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so.6.0.21 /usr/lib64

复制后,修改系统默认动态库的指向,即:重建默认库的软连接。

切换工作目录至/usr/lib64:

cd /usr/lib64

删除原来软连接:

rm -rf libstdc++.so.6

将默认库的软连接指向最新动态库:

ln -s libstdc++.so.6.0.21 libstdc++.so.6

默认动态库升级完成。重新运行以下命令检查动态库:

strings /usr/lib64/libstdc++.so.6 | grep GLIBC

现在输出如下:

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
GLIBCXX_3.4.14
GLIBCXX_3.4.15
GLIBCXX_3.4.16
GLIBCXX_3.4.17
GLIBCXX_3.4.18
GLIBCXX_3.4.19
GLIBCXX_3.4.20
GLIBCXX_3.4.21
GLIBC_2.3
GLIBC_2.2.5
GLIBC_2.3.2
GLIBCXX_FORCE_NEW
GLIBCXX_DEBUG_MESSAGE_LENGTH
Previous article 从零开始:编译自己的openwrt超详细教程
Next article Makefile 'package/utils/busybox/Makefile' has a dependency on 'libpam', which does not exist 问题解决

therock

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    解决类似 /usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.21′ not found 的问题 – rock funs

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