linux c 学习 GUN glibc 信息查看

gun glibc 信息查看方法

• 方式
  共享库作为可执行文件，默认位置可能为/lib/libc.so.6信息如下：

 

GNU C Library (GNU libc) stable release version 2.17, by Roland McGrath et al.

Copyright (C) 2012 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.

Compiled by GNU CC version 4.8.5 20150623 (Red Hat 4.8.5-39).

Compiled on a Linux 3.10.0 system on 2019-08-06.

Available extensions:

 The C stubs add-on version 2.1.2.

 crypt add-on version 2.1 by Michael Glad and others

 GNU Libidn by Simon Josefsson

 Native POSIX Threads Library by Ulrich Drepper et al

 BIND-8.2.3-T5B

 RT using linux kernel aio

libc ABIs: UNIQUE IFUNC

For bug reporting instructions, please see:

<http://www.gnu.org/software/libc/bugs.html>.

如果位置不对的解决方法，可以通过查看依赖，使用ldd,比如ldd mydemo,信息如下：

ldd mydemo

 linux-vdso.so.1 => (0x00007ffd3dff9000)

 libc.so.6 => /lib64/libc.so.6 (0x00007fb79a05b000)

 /lib64/ld-linux-x86-64.so.2 (0x00007fb79a429000)