How to open Eclipse with attached console in OS X?

I need to launch my Eclipse RCP application with the terminal attached to it and cannot do this. Eclipse itself has the same problem. I have added the standard "-console" option to eclipse.ini but the console is not shown. However when I run Contents/MacOS/eclipse directly it works and shows the console! What is the difference in thse two ways of launching and why doesn't the simple way show the console?