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.TH GNU_GET_LIBC_VERSION 3 2021-03-22 "Linux" "Linux Programmer's Manual"
.SH NAME
gnu_get_libc_version, gnu_get_libc_release \- get glibc version and release
.SH SYNOPSIS
.nf
.B #include <gnu/libc\-version.h>
.PP
.B const char *gnu_get_libc_version(void);
.B const char *gnu_get_libc_release(void);
.fi
.SH DESCRIPTION
The function
.BR gnu_get_libc_version ()
returns a string that identifies the glibc version available on the system.
.PP
The function
.BR gnu_get_libc_release ()
returns a string indicates the release status of the glibc version
available on the system.
This will be a string such as
.IR "stable" .
.SH VERSIONS
These functions first appeared in glibc in version 2.1.
.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.ad l
.nh
.TS
allbox;
lbx lb lb
l l l.
Interface	Attribute	Value
T{
.BR gnu_get_libc_version (),
.BR gnu_get_libc_release ()
T}	Thread safety	MT-Safe
.TE
.hy
.ad
.sp 1
.SH CONFORMING TO
These functions are glibc-specific.
.SH EXAMPLES
When run, the program below will produce output such as the following:
.PP
.in +4n
.EX
.RB "$" " ./a.out"
GNU libc version: 2.8
GNU libc release: stable
.EE
.in
.SS Program source
\&
.EX
#include <gnu/libc\-version.h>
#include <stdlib.h>
#include <stdio.h>

int
main(int argc, char *argv[])
{
    printf("GNU libc version: %s\en", gnu_get_libc_version());
    printf("GNU libc release: %s\en", gnu_get_libc_release());
    exit(EXIT_SUCCESS);
}
.EE
.SH SEE ALSO
.BR confstr (3)