From 231601b696d79075b9c0fe346a8b336f291f6829 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Sun, 10 May 2015 09:05:52 -0400
Subject: [PATCH] build_command: Choose configuration consistently across
 signatures

Teach the legacy two-argument signature to use CMAKE_CONFIG_TYPE
from the environment only if it is non-empty.  This makes behavior
consistent with the main signature.
---
 Source/cmBuildCommand.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/cmBuildCommand.cxx b/Source/cmBuildCommand.cxx
index 988e9a781..27b959c31 100644
--- a/Source/cmBuildCommand.cxx
+++ b/Source/cmBuildCommand.cxx
@@ -129,7 +129,7 @@ bool cmBuildCommand
 
   std::string configType = "Release";
   const char* cfg = getenv("CMAKE_CONFIG_TYPE");
-  if ( cfg )
+  if ( cfg && *cfg )
     {
     configType = cfg;
     }