From 7ebbec541b7fb7c46a0c951536fc2d259720e797 Mon Sep 17 00:00:00 2001
From: Chin-Chang Yang <2770271+ChinChangYang@users.noreply.github.com>
Date: Fri, 24 Nov 2023 07:42:59 +0800
Subject: [PATCH] Add warning for Intel-based processors

- Provides a warning message for users running cmake on an Intel-based processor, stating that it may encounter performance issues.
- Recommends switching to a cmake version designed for ARM64 architecture for optimal performance.
---
 cpp/CMakeLists.txt-macos | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cpp/CMakeLists.txt-macos b/cpp/CMakeLists.txt-macos
index c48f62775..9e0eec907 100644
--- a/cpp/CMakeLists.txt-macos
+++ b/cpp/CMakeLists.txt-macos
@@ -287,3 +287,7 @@ message(STATUS "Enabling AppleClang-specific build options.")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wnull-dereference -Wdangling-else")
 
 target_include_directories(katago PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
+
+if("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86_64")
+  message(WARNING "You are currently running cmake on an Intel-based processor. It is known that running KataGo in this configuration may encounter performance issues. It is recommended to switch to a cmake version designed for ARM64 architecture for optimal performance.")
+endif()