From 2c4580f2c95e8075d7e25dd06a25e8ce6b6a60c7 Mon Sep 17 00:00:00 2001
From: Nick Renieris <velocityra@gmail.com>
Date: Fri, 25 Oct 2019 20:35:04 +0300
Subject: [PATCH] build/windows: Build ext-boost on VS 2019 too

Also:
- Don't build if it's already built
---
 gen-windows.bat | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gen-windows.bat b/gen-windows.bat
index bf7191ef6..12ebae17c 100644
--- a/gen-windows.bat
+++ b/gen-windows.bat
@@ -6,7 +6,7 @@ if errorlevel 1 set vs_version=Visual Studio 15 2017 Win64
 if errorlevel 2 set vs_version=Visual Studio 16 2019
 
 REM CI uses pre-built Boost
-IF "%CI%"=="" IF "%vs_version%"=="Visual Studio 15 2017 Win64" (
+IF "%CI%"=="" IF NOT EXIST external\boost-build (
 	REM Create build dir
 	mkdir external\boost-build
 	cd external\boost