Solution: `GLIBC_2.xxx' not found”

Stroot_Zhang

于 2015-06-27 01:58:09 发布

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分类专栏： Linux GCC

本文链接：https://blog.youkuaiyun.com/Stpallas/article/details/46656487

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本文介绍了解决应用程序因glibc版本不匹配导致的问题的方法。包括通过环境变量临时切换到所需的glibc版本，如何查找引起问题的具体函数，以及如何链接到旧版本的符号等技巧。

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Bypass:

Using the temp environment variable:

env LD_LIBRARY_PATH=/path/to/correct/libc-xxx.so  SomeProblemAPP appArgs

LD_LIBRARY_PATH=/path/to/correct/libc-xxx.so  SomeProblemAPP appArgs

Find which function cause the problem:

Check Glibc version:

objdump -p app

Find Glibc function:

nm app |grep GLIBC_2.xx
#or
objdump -T app |grep GLIBC_2.xx
#or
readelf -s app |grep GLIBC_2.xx

Linking to Older Versioned Symbols (glibc)

Using the version script feature of ld :
Suppose the odd function is realpath, then add below line into the source file:

__asm__(".symver realpath,realpath@GLIBC_2.2.5");

so the source file will look like:

#include <limits.h>
#include <stdlib.h>
#include <stdio.h>

__asm__(".symver realpath,realpath@GLIBC_2.2.5");
int main()
{
   char* unresolved = "/lib64";
   char  resolved[PATH_MAX+1];

   if(!realpath(unresolved, resolved))
      { return 1; }

   printf("%s\n", resolved);

   return 0;
}