Add Windows Implementation Libraries

Externals/WIL/scripts/build_all.cmd

@@ -0,0 +1,51 @@
+@echo off
+setlocal EnableDelayedExpansion
+
+set BUILD_ROOT=%~dp0\..\build
+
+if "%Platform%"=="x64" (
+    set BUILD_ARCH=64
+) else if "%Platform%"=="x86" (
+    set BUILD_ARCH=32
+) else if [%Platform%]==[] (
+    echo ERROR: The build_all.cmd script must be run from a Visual Studio command window
+    exit /B 1
+) else (
+    echo ERROR: Unrecognized/unsupported platform %Platform%
+    exit /B 1
+)
+
+call :build clang debug
+if %ERRORLEVEL% NEQ 0 ( goto :eof )
+call :build clang release
+if %ERRORLEVEL% NEQ 0 ( goto :eof )
+call :build clang relwithdebinfo
+if %ERRORLEVEL% NEQ 0 ( goto :eof )
+call :build clang minsizerel
+if %ERRORLEVEL% NEQ 0 ( goto :eof )
+
+call :build msvc debug
+if %ERRORLEVEL% NEQ 0 ( goto :eof )
+call :build msvc release
+if %ERRORLEVEL% NEQ 0 ( goto :eof )
+call :build msvc relwithdebinfo
+if %ERRORLEVEL% NEQ 0 ( goto :eof )
+call :build msvc minsizerel
+if %ERRORLEVEL% NEQ 0 ( goto :eof )
+
+echo All build completed successfully!
+
+goto :eof
+
+:: build [compiler] [type]
+:build
+set BUILD_DIR=%BUILD_ROOT%\%1%BUILD_ARCH%%2
+if not exist %BUILD_DIR% (
+    goto :eof
+)
+
+pushd %BUILD_DIR%
+echo Building from %CD%
+ninja
+popd
+goto :eof