Check glibc version for a particular gcc compiler

c gcc glibc
MetallicPriest picture MetallicPriest · Mar 14, 2012 · Viewed 66.6k times · Source

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 gcc 4.4.4, because /lib/libc.so.6 shows the glibc used by gcc 4.1.2, since it is the default compiler.

Answer

R1tschY picture R1tschY · Mar 14, 2012

Write a test program (name it for example glibc-version.c):

#include <stdio.h>
#include <stdlib.h>
#include <gnu/libc-version.h>

int main(int argc, char *argv[]) {
  printf("GNU libc version: %s\n", gnu_get_libc_version());
  exit(EXIT_SUCCESS);
}

and compile it with the gcc-4.4 compiler: 

gcc-4.4 glibc-version.c -o glibc-version

When you execute ./glibc-version the used glibc version is shown.

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