From 0bb53f311cb9692ed84bb5fcecd34631ba1997a4 Mon Sep 17 00:00:00 2001
From: Martin Ridgers <martin.ridgers@epicgames.com>
Date: Mon, 30 Jan 2023 09:48:30 +0100
Subject: Call gettid syscall directly as gettid() is not available in earlier
 glibc

---
 zencore/thread.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'zencore/thread.cpp')

diff --git a/zencore/thread.cpp b/zencore/thread.cpp
index 77b75bae3..1597a7dd9 100644
--- a/zencore/thread.cpp
+++ b/zencore/thread.cpp
@@ -29,6 +29,7 @@
 #	include <sys/file.h>
 #	include <sys/sem.h>
 #	include <sys/stat.h>
+#	include <sys/syscall.h>
 #	include <sys/wait.h>
 #	include <time.h>
 #	include <unistd.h>
@@ -1065,7 +1066,7 @@ GetCurrentThreadId()
 #if ZEN_PLATFORM_WINDOWS
 	return ::GetCurrentThreadId();
 #elif ZEN_PLATFORM_LINUX
-	return int(gettid());
+	return int(syscall(SYS_gettid));
 #elif ZEN_PLATFORM_MAC
 	return int(pthread_mach_thread_np(pthread_self()));
 #endif
-- 
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