From 25d5daf30aa2dc451ba528712f668036d8506054 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Sat, 27 Jul 2019 07:50:26 -0700
Subject: [PATCH] Add configure time check for gettid API

glibc 2.30 has added this syscalls wrapper

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 configure.ac  | 1 +
 src/log_msg.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index 9e32a4a..6d1067b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -33,6 +33,7 @@ if test -n "$TIRPC_LIBS"; then
   AC_DEFINE(HAVE_TIRPC, 1, [Define to 1 if TIRPC is available])
 fi
 
+AC_CHECK_FUNCS(gettid)
 dnl The difficult part: could we reconfigure NSS or must we use DNS ?
 AC_CHECK_FUNCS(__nss_configure_lookup)
 if eval "test \"`echo '$ac_cv_func___nss_configure_lookup'`\" != yes"; then
diff --git a/src/log_msg.c b/src/log_msg.c
index 49f0905..37da311 100644
--- a/src/log_msg.c
+++ b/src/log_msg.c
@@ -26,6 +26,7 @@
 #include "log_msg.h"
 
 #include <sys/syscall.h>
+#if !HAVE_GETTID
 #ifdef __NR_gettid
 static pid_t
 gettid (void)
@@ -39,6 +40,7 @@ gettid (void)
     return getpid ();
 }
 #endif
+#endif
 
 int debug_flag = 0;
 int logfile_flag = 0;