add windows-build.cmd script

Author: warner

misc/windows-build.cmd

@@ -0,0 +1,21 @@
+@echo off
+:: To build extensions for 64 bit Python 3, we need to configure environment
+:: variables to use the MSVC 2010 C++ compilers from GRMSDKX_EN_DVD.iso of:
+:: MS Windows SDK for Windows 7 and .NET Framework 4
+::
+:: More details at:
+:: https://github.com/cython/cython/wiki/64BitCythonExtensionsOnWindows
+
+IF "%DISTUTILS_USE_SDK%"=="1" (
+    ECHO Configuring environment to build with MSVC on a 64bit architecture
+    ECHO Using Windows SDK 7.1
+    "C:\Program Files\Microsoft SDKs\Windows\v7.1\Setup\WindowsSdkVer.exe" -q -version:v7.1
+    CALL "C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\SetEnv.cmd" /x64 /release
+    SET MSSdk=1
+    REM Need the following to allow tox to see the SDK compiler
+    SET TOX_TESTENV_PASSENV=DISTUTILS_USE_SDK MSSdk INCLUDE LIB
+) ELSE (
+    ECHO Using default MSVC build environment
+)
+
+CALL %*