From 9cd989087dfdef8953a180bfc1572ff38cf3a7dd Mon Sep 17 00:00:00 2001
From: Peter Harris <peter@harr.ca>
Date: Fri, 4 Aug 2023 16:01:05 -0400
Subject: [PATCH] fix: build on Windows ARM64 (#913)

Regression introduced in commit 3cd730b18b563fdd48cd95dfb0174551aa18c3b3
---
 include/CLI/impl/Argv_inl.hpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/CLI/impl/Argv_inl.hpp b/include/CLI/impl/Argv_inl.hpp
index 3d00a570d..a00201799 100644
--- a/include/CLI/impl/Argv_inl.hpp
+++ b/include/CLI/impl/Argv_inl.hpp
@@ -29,6 +29,10 @@
 #define _X86_
 #elif defined(__arm__) || defined(_M_ARM) || defined(_M_ARMT)
 #define _ARM_
+#elif defined(__aarch64__) || defined(_M_ARM64)
+#define _ARM64_
+#elif defined(_M_ARM64EC)
+#define _ARM64EC_
 #endif
 #endif