From 920dc148731b928de99061f531a1cd1eb1c68393 Mon Sep 17 00:00:00 2001
From: Ryan Carsten Schmidt <git@ryandesign.com>
Date: Sun, 21 Apr 2024 16:55:31 -0500
Subject: [PATCH] Check for existence of TARGET_OS_IPHONE first

Fixes build error on old SDKs that don't define TARGET_OS_IPHONE when
using new compilers that consider it an error to check undefined
TARGET_OS_ macros.

./lj_arch.h:127:5: error: 'TARGET_OS_IPHONE' is not defined, evaluates
to 0 [-Werror,-Wundef-prefix=TARGET_OS_]
---
 src/lj_arch.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lj_arch.h b/src/lj_arch.h
index 026e741f..e6264398 100644
--- a/src/lj_arch.h
+++ b/src/lj_arch.h
@@ -124,7 +124,7 @@
 #define LJ_TARGET_POSIX		(LUAJIT_OS > LUAJIT_OS_WINDOWS)
 #define LJ_TARGET_DLOPEN	LJ_TARGET_POSIX
 
-#if TARGET_OS_IPHONE
+#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
 #define LJ_TARGET_IOS		1
 #else
 #define LJ_TARGET_IOS		0