-# and provides a way to test that build system. This script is
-# intended to be broadly portable; be careful when modifying not to
-# cause problems on systems that place dependencies in other than /usr
+# and provides a way to test the build system. When run, it will
+# build and install each GNU Radio module in turn, using the
+# just-installed modules as prerequisites. It places the output of
+# each build in a separate file BUILD.NNN.options, so that one can do
+# 'tail -f BUILD.*' to see which components were successfully built.
+
+# This script is intended to be broadly portable; be careful when
+# modifying not to cause problems on systems that place dependencies
+# in other than /usr