Question

When I call the Scala compiler from the command line, using my own compiler plugin, I use the following two parameters to see what happens:

-Ylog:generatewrappers -Xprint:generatewrappers

This gives me all the information I need. Using the same plugin inside the Scala IDE for Eclipse, those options are not yet available in the compiler properties. If I just put them exactly as above in the “Additional command line parameters” field, it does not seem to have any effect, although I can see that the plugin is doing it’s job.

So how can I get Eclipse to show me the output of the plugin/compiler, either in the Eclipse Console View or in the Problem View (or is there a special other View for this)?

EDIT: If anybody cares, I’m getting the very useful error message:

Error in Scala compiler: null

which is extremely frustrating. I tried using the -Ypresentation-log option, hoping to at least get the output in that file, but all it contains is something like this:

"wait for more work"(
  ),
"atnode"(
  1,
  1319373203925),
"asked"(
  ),
"atnode"(
  2,
  1319373203926),
...
"exception thrown"(
  "scala.tools.nsc.interactive.ShutdownReq$"(
    ))

This error does not come when I compile from the command line using the same options, so I have no way of debugging it without the actual presentation compiler output.

Answer 1

All compiler log messages are printlns. They go to stdout. Run Eclipse from the command prompt to see them.