From ffe517b40d690d5479cb639570fb0c5c8b8ad771 Mon Sep 17 00:00:00 2001
From: Bartosz Sosnowski <bartosz@janeasystems.com>
Date: Mon, 2 Nov 2020 21:59:13 +0100
Subject: [PATCH] win, build: fix build time on Windows

Sets MSBuild experimental switches to make it build in parallel project
files generated by gyp 0.5.0.

Fixes: https://github.com/nodejs/node/issues/35921

PR-URL: https://github.com/nodejs/node/pull/35932
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Zeyu Yang <himself65@outlook.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
---
 vcbuild.bat | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/vcbuild.bat b/vcbuild.bat
index c751fee0df57a9..292e05a93f83d7 100644
--- a/vcbuild.bat
+++ b/vcbuild.bat
@@ -373,6 +373,10 @@ if "%target%"=="Build" (
 )
 if "%target%"=="node" if exist "%config%\cctest.exe" del "%config%\cctest.exe"
 if defined msbuild_args set "extra_msbuild_args=%extra_msbuild_args% %msbuild_args%"
+@rem Setup env variables to use multiprocessor build
+set UseMultiToolTask=True
+set EnforceProcessCountAcrossBuilds=True
+set MultiProcMaxCount=%NUMBER_OF_PROCESSORS%
 msbuild node.sln %msbcpu% /t:%target% /p:Configuration=%config% /p:Platform=%msbplatform% /clp:NoItemAndPropertyList;Verbosity=minimal /nologo %extra_msbuild_args%
 if errorlevel 1 (
   if not defined project_generated echo Building Node with reused solution failed. To regenerate project files use "vcbuild projgen"