From 484d1140d2aa138abefb8973029e2c7c5eff1fc3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tor=20Arne=20Vestb=C3=B8?= <tor.arne.vestbo@qt.io>
Date: Mon, 21 Jun 2021 17:11:35 +0200
Subject: macOS: Add helper function to check whether we're running under
 Rosetta

As described in https://developer.apple.com/documentation/apple-silicon/about-the-rosetta-translation-environment?language=objc#Determine-Whether-Your-App-Is-Running-as-a-Translated-Binary

Change-Id: I16fa4be20e4a55c87c2eb760d671d27ee4de1703
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
(cherry picked from commit df62fdb51c2cd8746c0fe38b5af4b575cbc2bf00)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/corelib/kernel/qcore_mac.mm  | 10 ++++++++++
 src/corelib/kernel/qcore_mac_p.h |  1 +
 2 files changed, 11 insertions(+)

diff --git a/src/corelib/kernel/qcore_mac.mm b/src/corelib/kernel/qcore_mac.mm
index a4b8a4a628..435b2a6150 100644
--- a/src/corelib/kernel/qcore_mac.mm
+++ b/src/corelib/kernel/qcore_mac.mm
@@ -54,6 +54,7 @@
 #include <cxxabi.h>
 #include <objc/runtime.h>
 #include <mach-o/dyld.h>
+#include <sys/sysctl.h>
 
 #include <qdebug.h>
 
@@ -366,6 +367,15 @@ bool qt_mac_applicationIsInDarkMode()
 #endif
     return false;
 }
+
+bool qt_mac_runningUnderRosetta()
+{
+    int translated = 0;
+    auto size = sizeof(translated);
+    if (sysctlbyname("sysctl.proc_translated", &translated, &size, nullptr, 0) == 0)
+        return translated;
+    return false;
+}
 #endif
 
 bool qt_apple_isApplicationExtension()
diff --git a/src/corelib/kernel/qcore_mac_p.h b/src/corelib/kernel/qcore_mac_p.h
index 7634ffb221..538ade3466 100644
--- a/src/corelib/kernel/qcore_mac_p.h
+++ b/src/corelib/kernel/qcore_mac_p.h
@@ -188,6 +188,7 @@ private:
 
 #ifdef Q_OS_MACOS
 Q_CORE_EXPORT bool qt_mac_applicationIsInDarkMode();
+Q_CORE_EXPORT bool qt_mac_runningUnderRosetta();
 #endif
 
 #ifndef QT_NO_DEBUG_STREAM
-- 
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