diff --git a/Tools/msi/msisupport.mak b/Tools/msi/msisupport.mak
new file mode 100644
index 0000000..1047510
--- /dev/null
+++ b/Tools/msi/msisupport.mak
@@ -0,0 +1,12 @@
+# /OPT: REF and ICF are added by VS.NET by default
+# NOWIN98 saves 7k of executable size, at the expense of some
+# slowdown on Win98
+msisupport.dll:	msisupport.obj
+	link.exe /OUT:msisupport.dll /INCREMENTAL:NO /NOLOGO /DLL /MACHINE:X86 /SUBSYSTEM:WINDOWS /OPT:REF /OPT:ICF /OPT:NOWIN98 msisupport.obj msi.lib kernel32.lib
+
+# We request a static CRT, so that there will be no CRT dependencies
+# for the target system. We cannot do without a CRT, since it provides
+# the DLL entry point.
+msisupport.obj:	msisupport.c
+	cl /O2 /D WIN32 /D NDEBUG /D _WINDOWS /MT /W3 /c msisupport.c
+