This tab of the WiX action specifies compiler options.

 

Output filename: Specifies the WiX object filename (optional, uses input filename and .wixobj extension if not specified).

 

Only do validation of documents: Only validates documents if checked and does not compile or link.

 

Show source trace for errors, warnings, and verbose messages: Self-explanatory.

 

Preprocessor parameters/values to set: Defines preprocessor parameter name-value pairs to set (optional).  Enter a parameter name and value in the edit fields, and click Insert to add to the list.  Select an item in the list to update its value or delete it from the list.

 

Additional compiler command-line options: Specifies additional compiler (candle.exe) command-line options (optional).  Type candle<Enter> at a Command Prompt to see the available options.