light

$ light -help
Microsoft (R) Windows Installer Xml Linker version 2.0.5325.0
Copyright (C) Microsoft Corporation 2003. All rights reserved.

 usage:  light.exe [-?] [-b basePath] [-nologo] [-out outputFile] objectFile [ob
jectFile ...]

   -ai        allow identical rows, identical rows will be treated as a warning
   -au        (experimental) allow unresolved references, will not create a vali
d output
   -b         base path to locate all files (default: current directory)
   -cc        path to cache built cabinets (will not be deleted after linking)
   -ext       extension (class, assembly), should extend SchemaExtension or Bind
erExtension
   -fv        add a 'fileVersion' entry to the MsiAssemblyName table (rarely nee
ded)
   -i         specify the base output path for uncompressed images (default: -ou
t parameter)
   -loc       read localization string sfrom .wxl file
   -nologo    skip printing light logo information
   -notidy    do not delete temporary files (useful for debugging)
   -reusecab  reuse cabinets from cabinet cache
   -out       specify output file (default: write to current directory)
   -xo        output xml instead of MSI format
   -pedantic:<level>  pedantic checks (levels: easy, heroic, legendary)
   -reusecab  reuse cabinets from cabinet cache
   -sa        suppress assemblies: do not get assembly name information for asse
mblies
   -sacl      suppress resetting ACLs (useful when laying out image to a network
 share)
   -sadmin    suppress default admin sequence actions
   -sadv      suppress default adv sequence actions
   -sa        suppress assemblys: do not get assembly name information for assem
blies
   -sf        suppress files: do not get any file information (equivalent to -sa
 and -sh)
   -sh        suppress file info: do not get hash, version, language, etc
   -sl        suppress layout
   -ss        suppress schema validation of documents (performance boost)
   -sui       suppress default UI sequence actions
   -sv        suppress intermediate file version mismatch checking
   -ts        tag sectionId attribute on tuples (ignored if not used with -xo)
   -ust       use small table definitions (for backwards compatiblity)
   -wx        treat warnings as errors
   -w<N>      set the warning level (0: show all, 3: show none)
   -sw        suppress all warnings (same as -w3)
   -sw<N>     suppress warning with specific message ID
   -v         verbose output (same as -v2)
   -v<N>      sets the level of verbose output (0: most output, 3: none)
   -?         this help information

Environment variables:
   WIX_TEMP   overrides the temporary directory used for cab creation, msm explo
ding, ...

Common extensions:
   .wxs    - Windows installer Xml Source file
   .wxi    - Windows installer Xml Include file
   .wxl    - Windows installer Xml Localization file
   .wixobj - Windows installer Xml Object file (in XML format)
   .wixlib - Windows installer Xml Library file (in XML format)
   .wixout - Windows installer Xml Output file (in XML format)

   .msm - Windows installer Merge Module
   .msi - Windows installer Product Database
   .mst - Windows installer Transform
   .pcp - Windows installer Patch Creation Package

For more information see: http://wix.sourceforge.net