You are now in the directory for the port "devel/gdb" (package name "gdb-4.16").
This is the one-line description for this port:
The developer's version of GNU debugger.
Please read the file "pkg/DESCR" for a longer description.
Go to the top of the ports tree for a summary on how to use the ports collection.
This port requires package(s) "gmake-3.77" to build.