commit https://github.com/vim/vim/commit/08b7bae91adb79d30d4c923fd758e2f7cecd33ef Author: Bram Moolenaar <Bram@vim.org> Date: Wed Dec 30 17:56:05 2015 +0100 patch 7.4.1004 Problem: Using Makefile when auto/config.mk does not exists results in warnings. Solution: Use default values for essential variables.

@echo off
rem To be used on MS-Windows for Visual C++ 2010 Express Edition
rem   aka Microsoft Visual Studio 10.0.
rem See INSTALLpc.txt for information.
@echo on

call "%VS100COMNTOOLS%vsvars32.bat"