From b738d315fbf634f6c571234b8f028e6384eb42ec Mon Sep 17 00:00:00 2001
From: Brian White <mscdex@mscdex.net>
Date: Mon, 10 Feb 2014 03:23:22 -0500
Subject: [PATCH] build: skip vcvarsall if already set up

Without this, running vcbuild repeatedly for some time will cause errors with msbuild saying the command line is too long (due to concatenation happening in vcvarsall).
---
 vcbuild.bat | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/vcbuild.bat b/vcbuild.bat
index 0dda6e2d..7f07a936 100644
--- a/vcbuild.bat
+++ b/vcbuild.bat
@@ -41,6 +41,8 @@ shift
 goto next-arg
 :args-done
 
+if defined VCINSTALLDIR goto select-target
+
 @rem Look for Visual Studio 2013
 if not defined VS120COMNTOOLS goto vc-set-2012
 if not exist "%VS120COMNTOOLS%\..\..\vc\vcvarsall.bat" goto vc-set-2012