netdev - [PATCH] configure: Define _GNU_SOURCE when checking for setns

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Date:   Wed, 10 Aug 2022 22:34:40 -0700
From:   Khem Raj <raj.khem@...il.com>
To:     netdev@...r.kernel.org
Cc:     Khem Raj <raj.khem@...il.com>
Subject: [PATCH] configure: Define _GNU_SOURCE when checking for setns

glibc defines this function only as gnu extention

Signed-off-by: Khem Raj <raj.khem@...il.com>
---
 configure | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure b/configure
index 440facb..c02753b 100755
--- a/configure
+++ b/configure
@@ -191,6 +191,7 @@ check_ipt_lib_dir()
 check_setns()
 {
     cat >$TMPDIR/setnstest.c <<EOF
+#define _GNU_SOURCE
 #include <sched.h>
 int main(int argc, char **argv)
 {
-- 
2.37.1