build: vcbuild.bat fix for Visual Studio 2012

Change vcbuild.bat to ignore VCINSTALLDIR environment variable,
always check for specific VS version and set GYP_MSVS_VERSION
accordingly. Otherwise GYP generates project files in format
that cannot be compiled by VS2012.

diff --git a/vcbuild.bat b/vcbuild.bat
index babefbc..dc59606 100644 (file)
--- a/vcbuild.bat
+++ b/vcbuild.bat
@@ -99,9 +99,6 @@ ENDLOCAL
 @rem Skip project generation if requested.
 if defined nobuild goto sign
 
-@rem Bail out early if not running in VS build env.
-if defined VCINSTALLDIR goto msbuild-found
-
 @rem Look for Visual Studio 2012
 if not defined VS110COMNTOOLS goto vc-set-2010
 if not exist "%VS110COMNTOOLS%\..\..\vc\vcvarsall.bat" goto vc-set-2010