From 433e5c7d9bb6a4e0801b7609e9bb5c040e840599 Mon Sep 17 00:00:00 2001
From:  <rj150@hotmail.com>
Date: Thu, 28 Apr 2016 18:27:35 -0400
Subject: [PATCH] [Common] gettid() not declared in this scope

---
 Source/Common/Thread.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Source/Common/Thread.cpp b/Source/Common/Thread.cpp
index 904727e7b..a58b4aa87 100644
--- a/Source/Common/Thread.cpp
+++ b/Source/Common/Thread.cpp
@@ -3,6 +3,7 @@
 #ifndef _WIN32
 #include <unistd.h>
 #include <pthread.h>
+#include <sys/syscall.h>
 #endif
 
 CThread::CThread(CTHREAD_START_ROUTINE lpStartAddress) :
@@ -125,6 +126,8 @@ uint32_t CThread::GetCurrentThreadId(void)
 {
 #ifdef _WIN32
     return ::GetCurrentThreadId();
+#elif defined(SYS_gettid) || defined(__NR_gettid)
+    return syscall(__NR_gettid); /* GLIBC has no implementation of gettid(). */
 #else
     return gettid();
 #endif