build,tools: support building with Visual Studio 2019

tools/gyp/pylib/gyp/MSVSVersion.py

@@ -475,7 +475,7 @@ def SelectVisualStudioVersion(version='auto', allow_fallback=True):
   if version == 'auto':
     version = os.environ.get('GYP_MSVS_VERSION', 'auto')
   version_map = {
-    'auto': ('15.0', '14.0', '12.0', '10.0', '9.0', '8.0', '11.0'),
+    'auto': ('16.0', '15.0', '14.0', '12.0', '10.0', '9.0', '8.0', '11.0'),
     '2005': ('8.0',),
     '2005e': ('8.0',),
     '2008': ('9.0',),
@@ -488,6 +488,7 @@ def SelectVisualStudioVersion(version='auto', allow_fallback=True):
     '2013e': ('12.0',),
     '2015': ('14.0',),
     '2017': ('15.0',),
+    '2019': ('16.0',),
   }
   override_path = os.environ.get('GYP_MSVS_OVERRIDE_PATH')
   if override_path:

tools/msvs/vswhere_usability_wrapper.cmd

@@ -15,7 +15,7 @@ where vswhere 2> nul > nul
 if errorlevel 1 goto :no-vswhere
 set VSWHERE_REQ=-requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64
 set VSWHERE_PRP=-property installationPath
-set VSWHERE_LMT=-version "[15.0,16.0)"
+set VSWHERE_LMT=-version %1
 vswhere -prerelease > nul
 if not errorlevel 1 if "%VSWHERE_WITH_PRERELEASE%"=="1" set "VSWHERE_LMT=%VSWHERE_LMT% -prerelease"
 SET VSWHERE_ARGS=-latest -products * %VSWHERE_REQ% %VSWHERE_PRP% %VSWHERE_LMT%

vcbuild.bat

@@ -74,6 +74,7 @@ if /i "%1"=="x86"           set target_arch=x86&goto arg-ok
 if /i "%1"=="x64"           set target_arch=x64&goto arg-ok
 if /i "%1"=="arm64"         set target_arch=arm64&goto arg-ok
 if /i "%1"=="vs2017"        set target_env=vs2017&goto arg-ok
+if /i "%1"=="vs2019"        set target_env=vs2019&goto arg-ok
 if /i "%1"=="noprojgen"     set noprojgen=1&goto arg-ok
 if /i "%1"=="projgen"       set projgen=1&goto arg-ok
 if /i "%1"=="nobuild"       set nobuild=1&goto arg-ok
@@ -174,6 +175,7 @@ set "node_exe=%config%\node.exe"
 set "node_gyp_exe="%node_exe%" deps\npm\node_modules\node-gyp\bin\node-gyp"
 set "npm_exe="%~dp0%node_exe%" %~dp0deps\npm\bin\npm-cli.js"
 if "%target_env%"=="vs2017" set "node_gyp_exe=%node_gyp_exe% --msvs_version=2017"
+if "%target_env%"=="vs2019" set "node_gyp_exe=%node_gyp_exe% --msvs_version=2019"
 
 if "%config%"=="Debug"      set configure_flags=%configure_flags% --debug
 if defined nosnapshot       set configure_flags=%configure_flags% --without-snapshot
@@ -229,9 +231,9 @@ if %target_arch%==x86 if %msvs_host_arch%==x86 set vcvarsall_arg=x86
 
 @rem Look for Visual Studio 2017
 :vs-set-2017
-if defined target_env if "%target_env%" NEQ "vs2017" goto msbuild-not-found
+if defined target_env if "%target_env%" NEQ "vs2017" goto vs-set-2019
 echo Looking for Visual Studio 2017
-call tools\msvs\vswhere_usability_wrapper.cmd
+call tools\msvs\vswhere_usability_wrapper.cmd "[15.0,16.0)"
 if "_%VCINSTALLDIR%_" == "__" goto msbuild-not-found
 if defined msi (
   echo Looking for WiX installation for Visual Studio 2017...
@@ -262,6 +264,41 @@ set GYP_MSVS_VERSION=2017
 set PLATFORM_TOOLSET=v141
 goto msbuild-found
 
+@rem Look for Visual Studio 2019
+:vs-set-2019
+if defined target_env if "%target_env%" NEQ "vs2019" goto msbuild-not-found
+echo Looking for Visual Studio 2019
+call tools\msvs\vswhere_usability_wrapper.cmd "[16.0,17.0)"
+if "_%VCINSTALLDIR%_" == "__" goto msbuild-not-found
+if defined msi (
+  echo Looking for WiX installation for Visual Studio 2019...
+  if not exist "%WIX%\SDK\VS2017" (
+    echo Failed to find WiX install for Visual Studio 2019
+    echo VS2019 support for WiX is only present starting at version 3.11
+    goto msbuild-not-found
+  )
+  if not exist "%VCINSTALLDIR%\..\MSBuild\Microsoft\WiX" (
+    echo Failed to find the WiX Toolset Visual Studio 2019 Extension
+    goto msbuild-not-found
+  )
+)
+@rem check if VS2019 is already setup, and for the requested arch
+if "_%VisualStudioVersion%_" == "_16.0_" if "_%VSCMD_ARG_TGT_ARCH%_"=="_%target_arch%_" goto found_vs2019
+@rem need to clear VSINSTALLDIR for vcvarsall to work as expected
+set "VSINSTALLDIR="
+@rem prevent VsDevCmd.bat from changing the current working directory
+set "VSCMD_START_DIR=%CD%"
+set vcvars_call="%VCINSTALLDIR%\Auxiliary\Build\vcvarsall.bat" %vcvarsall_arg%
+echo calling: %vcvars_call%
+call %vcvars_call%
+if errorlevel 1 goto msbuild-not-found
+if defined DEBUG_HELPER @ECHO ON
+:found_vs2019
+echo Found MSVS version %VisualStudioVersion%
+set GYP_MSVS_VERSION=2019
+set PLATFORM_TOOLSET=v142
+goto msbuild-found
+
 :msbuild-not-found
 echo Failed to find a suitable Visual Studio installation.
 echo Try to run in a "Developer Command Prompt" or consult