[Boost-build] Preprocessed output

Subject: [Boost-build] Preprocessed output
From: Edward Diener (eldiener_at_[hidden])
Date: 2011-03-29 14:10:45

How do I tell Boost Build to generate preprocessed output, either when 
using the 'compile' rule or using some other rule ?

I tried, for gcc, adding an -E to the command line as a cxxflag but the 
compile rule still attempted to compile the file and no output was 
produced. I need to send preprocessed output to a file without compiling 
the preprocessed output.