A sample master WiX file has includes:
<Directory Id="BIN" Name="bin">
<?include ..\include\shared.wxi?>
<Component Id="Service.SharedFiles" DiskId="1" Guid="72e3b959-9515-40ba-a095-bf788aa3d617">
<CreateFolder>
<Permission User="Administrators" GenericAll="yes" />
A sample shared.wxi to be included:
<?xml version="1.0"?>
<Include>
<Component Id="Component_1" Guid="58345065-0314-41fd-9992-d960f297ba9a" DiskId="1">
<File Id="File1" Name="Net_~1.dll" LongName="NetInverse.core.dll"
KeyPath="yes" Compressed="yes" src="$(var.COREDIR)\bin\" />