Add support for MSVC 2017

Use the vswhere utility to detect the installation assuming the documentation is correct and this is always installed in a fixed location.

wxBuild_wxWidgets.bat

@@ -28,7 +28,7 @@
 ::					V1.14 - Added support for VC 14.0 and external 3rd party libraries
 ::**************************************************************************
 SETLOCAL
-set WXBUILD_VERSION=1.14
+set WXBUILD_VERSION=1.15
 set WXBUILD_APPNAME=wxBuild_wxWidgets
 :: MinGW Gcc install location. This must match your systems configuration.
 set GCCDIR=C:\MinGW
@@ -79,6 +79,10 @@ if %1 == VC140    	    goto SETUP_VC140_BUILD_ENVIRONMENT
 if %1 == vc140    	    goto SETUP_VC140_BUILD_ENVIRONMENT
 if %1 == VC140_64 	    goto SETUP_VC140_64_BUILD_ENVIRONMENT
 if %1 == vc140_64 	    goto SETUP_VC140_64_BUILD_ENVIRONMENT
+if %1 == VC141    	    goto SETUP_VC141_BUILD_ENVIRONMENT
+if %1 == vc141    	    goto SETUP_VC141_BUILD_ENVIRONMENT
+if %1 == VC141_64 	    goto SETUP_VC141_64_BUILD_ENVIRONMENT
+if %1 == vc141_64 	    goto SETUP_VC141_64_BUILD_ENVIRONMENT
 if %1 == MINGW    	    goto SETUP_GCC_BUILD_ENVIRONMENT
 if %1 == mingw    	    goto SETUP_GCC_BUILD_ENVIRONMENT
 if %1 == MINGW4   	    goto SETUP_GCC4_BUILD_ENVIRONMENT
@@ -357,6 +361,62 @@ set BAKE_FORMAT=msvc
 set BAKE_OPTIONS_FILE=config.vc
 goto START
 
+:SETUP_VC141_BUILD_ENVIRONMENT
+:: Add the VS 2017 includes.
+echo Setting environment for Visual C++ 14.1...
+echo.
+for /f "usebackq tokens=*" %%i in (`"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" -latest -products * -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property installationPath`) do (
+  set InstallDir=%%i
+)
+if not exist "%InstallDir%\Common7\Tools\vsdevcmd.bat" (
+  echo ERROR OCCURED!
+  echo Compiler not found.
+  goto END
+)
+call "%InstallDir%\Common7\Tools\vsdevcmd.bat" -no_logo -arch=x86
+set INCLUDE=%WXWIN%\include;%INCLUDE%
+:: -- Setup the make executable and the actual makefile name --
+set MAKE=nmake
+set MAKEFILE=makefile.vc
+set FLAGS=USE_ODBC=1 USE_OPENGL=1 USE_QA=1 USE_GDIPLUS=1 CXXFLAGS=/DNEED_PBT_H=0
+set COMPILER_VERSION=141
+set COMPILER_NAME=vs2017
+set COMPILER_ARCH=32
+set BAKE_FORMAT=msvc
+set BAKE_OPTIONS_FILE=config.vc
+goto START
+
+:SETUP_VC141_64_BUILD_ENVIRONMENT
+:: Add the VS 2017 64-bit includes.
+echo Setting environment for Visual C++ 14.1 64-bit...
+echo.
+set CPU=AMD64
+set HOSTARCH=x86
+echo Determining Processor Architecture for VC141 64-bit Build.
+if %PROCESSOR_ARCHITECTURE% == AMD64 set HOSTARCH=amd64
+echo Determined %HOSTARCH%
+echo.
+for /f "usebackq tokens=*" %%i in (`"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" -latest -products * -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property installationPath`) do (
+  set InstallDir=%%i
+)
+if not exist "%InstallDir%\Common7\Tools\vsdevcmd.bat" (
+  echo ERROR OCCURED!
+  echo Compiler not found.
+  goto END
+)
+call "%InstallDir%\Common7\Tools\vsdevcmd.bat" -no_logo -arch=amd64 -host_arch=%HOSTARCH%
+set INCLUDE=%WXWIN%\include;%INCLUDE%
+:: -- Setup the make executable and the actual makefile name --
+set MAKE=nmake
+set MAKEFILE=makefile.vc
+set FLAGS=USE_ODBC=1 USE_OPENGL=1 USE_QA=1 USE_GDIPLUS=1 CXXFLAGS=/DNEED_PBT_H=0
+set COMPILER_VERSION=141
+set COMPILER_NAME=vs2017
+set COMPILER_ARCH=64
+set BAKE_FORMAT=msvc
+set BAKE_OPTIONS_FILE=config.vc
+goto START
+
 :SETUP_GCC_BUILD_ENVIRONMENT
 echo Assuming that GCC has been installed to:
 echo   %GCCDIR%
@@ -636,6 +696,8 @@ echo           VC120         = Visual C++ 12.0
 echo           VC120_64      = Visual C++ 12.0 64-bit
 echo           VC140         = Visual C++ 14.0
 echo           VC140_64      = Visual C++ 14.0 64-bit
+echo           VC141         = Visual C++ 14.1
+echo           VC141_64      = Visual C++ 14.1 64-bit
 echo.
 echo      BuildTarget Options:
 echo           LIB   = Builds all the static library targets.