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背景说明

在 centos7 编译源码时,遇到报错:

/lib64/libstdc++.so.6: version `GLIBCXX_3.4.21' not found`

解决方法

升级 libstdc++.so.6

rm -rf /usr/lib64/libstdc++.so.6
ln -s /usr/lib64/libstdc++.so.6.0.25 /usr/lib64/libstdc++.so.6

备注:centos7 已停止维护,yum 源中的 libstdc++.so.6 也比较旧,无法通过 yum 升级

libstdc++.so.6 文件说明

本仓库中同时有 x86_64 和 aarch64 两个版本的 libstdc++.so.6 文件,可直接下载使用(亲测可用)。

使用 file 命令可以查看 .so 文件的架构,如下所示:

file x86_64/libstdc++.so.6.0.26 
x86_64/libstdc++.so.6.0.26: ELF 64-bit LSB shared object, x86-64, version 1 (GNU/Linux), dynamically linked, with debug_info, not stripped

file aarch64/libstdc++.so.6.0.25 
aarch64/libstdc++.so.6.0.25: ELF 64-bit LSB shared object, ARM aarch64, version 1 (GNU/Linux), dynamically linked, with debug_info, not stripped

上面的 .so 文件已通过 ClamAV 的 clamscan 命令扫描,均 OK。

clamscan -r --bell libstdc++.so.6.0.26
/data/libstdc-so-for-centos7/x86_64/libstdc++.so.6.0.26: OK

----------- SCAN SUMMARY -----------
Known viruses: 8707886
Engine version: 0.103.11
Scanned directories: 0
Scanned files: 1
Infected files: 0
Data scanned: 13.37 MB
Data read: 12.56 MB (ratio 1.06:1)
Time: 17.612 sec (0 m 17 s)
Start Date: 2025:08:07 15:19:29
End Date:   2025:08:07 15:19:46


clamscan -r --bell libstdc++.so.6.0.25
/data/libstdc-so-for-centos7/aarch64/libstdc++.so.6.0.25: OK

----------- SCAN SUMMARY -----------
Known viruses: 8707886
Engine version: 0.103.11
Scanned directories: 0
Scanned files: 1
Infected files: 0
Data scanned: 12.56 MB
Data read: 11.80 MB (ratio 1.06:1)
Time: 17.941 sec (0 m 17 s)
Start Date: 2025:08:07 15:32:00
End Date:   2025:08:07 15:32:18

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centos7 libstdc++.so.6(x86_64 and aarch64)

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