From ce025d9233351bab786c46fd3e97c9e95b78ff2c Mon Sep 17 00:00:00 2001
From: Richard Townsend <Richard.Townsend@arm.com>
Date: Fri, 22 May 2020 11:40:13 +0100
Subject: [PATCH] build: zlib build error on Windows on Arm

Zlib's SIMD optimizations are not supported in MSVC, so fall back to the
C versions for now.

PR-URL: https://github.com/nodejs/node/pull/33511
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Shelley Vohr <codebytere@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
---
 tools/v8_gypfiles/v8.gyp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/v8_gypfiles/v8.gyp b/tools/v8_gypfiles/v8.gyp
index 67f21729677b6f..347847b63cf61f 100644
--- a/tools/v8_gypfiles/v8.gyp
+++ b/tools/v8_gypfiles/v8.gyp
@@ -1642,7 +1642,13 @@
           'toolsets': ['host', 'target'],
         }],
         ['OS=="win"', {
-          'defines': ['X86_WINDOWS'],
+          'conditions': [
+            ['"<(target_arch)"=="arm64" and _toolset=="target"', {
+              'defines': ['CPU_NO_SIMD']
+            }, {
+              'defines': ['X86_WINDOWS']
+            }]
+          ]
         }],
       ],
       'direct_dependent_settings': {