hello.adb (containing unit Hello) and bind and link the
resulting object files to generate an executable file hello.
main1.adb (containing unit Main1), main2.adb
(containing unit Main2) and main3.adb
(containing unit Main3) and bind and link the resulting object files
to generate three executable files main1,
main2 and main3.
main_unit.adb). All compilations will
be done with optimization level 2 and the order of elaboration will be
listed by the binder. `gnatmake' will operate in quiet mode, not
displaying commands it is executing.