From 3504f9b9ff8d76739f39af2bd2de8b6068431c2e Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 4 Mar 2014 10:11:32 -0500
Subject: [PATCH] cmake: Fix --check-build-system argument count check (#14784)

This internal option requires two arguments, not just one.  Fix the
argument count required to recognize the option.
---
 Source/cmake.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index 33fb0fcde..abbabe762 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -653,7 +653,7 @@ void cmake::SetArgs(const std::vector<std::string>& args,
       cmSystemTools::ConvertToUnixSlashes(path);
       this->SetHomeOutputDirectory(path.c_str());
       }
-    else if((i < args.size()-1) && (arg.find("--check-build-system",0) == 0))
+    else if((i < args.size()-2) && (arg.find("--check-build-system",0) == 0))
       {
       this->CheckBuildSystemArgument = args[++i];
       this->ClearBuildSystem = (atoi(args[++i].c_str()) > 0);