Check glibc version for a particular gcc compiler

Question

I have two gcc compilers installed on my system, one is gcc 4.1.2 (default) and the other is gcc 4.4.4. How can I check the libc version used by

Answer 1

The easiest way is to use ldd which comes with glibc

Just run this command ldd --version :

dina@dina-X450LA:~$ ldd --version
ldd (Ubuntu GLIBC 2.23-0ubuntu9) 2.23
Copyright (C) 2016 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.
Written by Roland McGrath and Ulrich Drepper.

Their is two additional ways to find out the glibc version:

1. Check the version of the installed glibc rpm package : this by runing this command

   rpm -q glibc

2. Check the version of the used libc.so file. This way is a little bit more difficult. You can check it in this link: Linux: Check the glibc version

Answer 2

You can use strings command to check GLIBC version of compiler. Highest version is applicable.

ubuntu1604:extra$ strings ./arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc | grep GLIBC
    GLIBC_2.3
    GLIBC_2.8
    GLIBC_2.14
    GLIBC_2.4
    GLIBC_2.11
    GLIBC_2.2.5
    GLIBC_2.3.4