From 86f6dcdc17a8f5ef2382faaef860cfa5243984fe Mon Sep 17 00:00:00 2001
From: Yining Karl Li <betajippity@gmail.com>
Date: Fri, 3 Jul 2020 06:23:18 -0700
Subject: [PATCH] Add detection of arm64 architecture for macos builds

This commit adds detection of arm64 for macos builds on arm64 hardware.
The only change necessary is an additional case in the code where
macos.inc queries and detects the system architecture.
---
 build/macos.inc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/build/macos.inc b/build/macos.inc
index dde93216f5e7a9337dd83757df1ec734241d044e..2bdcde7e3042390b871fc601a930b3648ccaa124 100644
--- a/build/macos.inc
+++ b/build/macos.inc
@@ -36,11 +36,15 @@ ifndef arch
      export arch:=ppc32
    endif
  else
+  ifeq ($(shell /usr/sbin/sysctl -n hw.machine),arm64)
+   export arch:=arm64
+  else
    ifeq ($(shell /usr/sbin/sysctl -n hw.optional.x86_64 2>/dev/null),1)
      export arch:=intel64
    else
      export arch:=ia32
    endif
+  endif
  endif
 endif