--- /dev/null
+@echo off
+
+rem -- Echo the git commit hash. If git isn't available for some reason,
+rem -- output nothing instead.
+
+mkdir ..\gen 2>nul
+
+set /p VERSION=<..\..\VERSION.txt
+set COMMIT=%1
+
+echo // AUTO-GENERATED BY %0 %*>..\gen\GenVersion.h
+echo const char GenVersion_Version[] = "%VERSION%";>>..\gen\GenVersion.h
+echo const char GenVersion_Commit[] = "%COMMIT%";>>..\gen\GenVersion.h
+
+rem -- The winpty.gyp file expects the script to output the include directory,
+rem -- relative to src.
+echo gen
+
+rem -- Set ERRORLEVEL to 0 using this cryptic syntax.
+(call )