fluentbit: Fix build with clang

Fix build using clang-15 which is even stricter then clang-14
These patches are worth upstream too

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Paulo Neves <ptsneves@gmail.com>

meta-oe/recipes-extended/fluentbit/fluentbit/0006-monkey-Fix-TLS-detection-testcase.patch

@@ -0,0 +1,34 @@
+From f88d9b82e8bd8ae38fba666b5825ffb41769f81a Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Tue, 9 Aug 2022 12:25:22 -0700
+Subject: [PATCH] monkey: Fix TLS detection testcase
+
+Clang15 errors out on compiling the check and disables TLS
+
+Fixes errors like
+
+error: call to undeclared function '__tls_get_addr'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
+         __tls_get_addr(0);
+         ^
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ lib/monkey/CMakeLists.txt | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/lib/monkey/CMakeLists.txt b/lib/monkey/CMakeLists.txt
+index 15e62e8..96ac2bd 100644
+--- a/lib/monkey/CMakeLists.txt
++++ b/lib/monkey/CMakeLists.txt
+@@ -178,6 +178,8 @@ endif()
+ # Use old Pthread TLS
+ if(NOT MK_PTHREAD_TLS)
+   check_c_source_compiles("
++     #include <sys/types.h>
++     extern void *__tls_get_addr(size_t *v);
+      __thread int a;
+      int main() {
+          __tls_get_addr(0);
+-- 
+2.37.1
+