From 43f70003c9c3e38dddff49c873ce34fde2923abe Mon Sep 17 00:00:00 2001
From: Stefan Boberg <stefan.boberg@epicgames.com>
Date: Mon, 3 Nov 2025 15:50:19 +0100
Subject: added MacOS-native IterateCommandlineArgs (#624)

fixes issue where command line arguments to control tracing would not work on Mac
---
 src/zencore/commandline.cpp | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'src/zencore/commandline.cpp')

diff --git a/src/zencore/commandline.cpp b/src/zencore/commandline.cpp
index 0cdccf986..78260aeef 100644
--- a/src/zencore/commandline.cpp
+++ b/src/zencore/commandline.cpp
@@ -10,6 +10,10 @@ ZEN_THIRD_PARTY_INCLUDES_START
 ZEN_THIRD_PARTY_INCLUDES_END
 #endif
 
+#if ZEN_PLATFORM_MAC
+#	include <crt_externs.h>
+#endif
+
 #include <functional>
 
 namespace zen {
@@ -35,7 +39,17 @@ IterateCommandlineArgs(std::function<void(const std::string_view& Arg)>& Process
 	}
 
 	::LocalFree(HLOCAL(ArgV));
-#elif ZEN_PLATFORM_LINUX || ZEN_PLATFORM_MAC
+#elif ZEN_PLATFORM_MAC
+	int	   ArgC = *_NSGetArgc();
+	char** ArgV = *_NSGetArgv();
+	if (ArgC > 1)
+	{
+		for (int i = 1; i < ArgC; ++i)
+		{
+			ProcessArg(ArgV[i]);
+		}
+	}
+#elif ZEN_PLATFORM_LINUX
 	if (FILE* CmdLineFile = fopen("/proc/self/cmdline", "r"))
 	{
 		const char* ArgV[255] = {};
-- 
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