How to change the information printed by Shake during a build

Question

Currently when building Shake outputs lines such as:

# gcc (for debugBuild)

But that is not informative for our application, so we'd like to print something like:

objectFileName.o[configurationFlavour]

How can you do that in Shake?

Answer 1

The easiest thing is to play with the Verbosity field of shakeVerbosity, or with --verbose. At Normal I get:

# ghc (for output/self/General/Intern.o output/self/General/Intern.hi)

And at Verbose I get:

ghc -c src\Development/Shake/Classes.hs -isrc -main-is Run.main -odir=output/self -hidir=output/self -i=output/self -DPORTABLE -fwarn-unused-imports

If that's not enough you can remove the output from cmd with quietly and print your own messages with putNormal:

putNormal "I'm running objectFileName.o in configuration"
quietly $ cmd "gcc -c objectFileName.o"