How can I see all dependencies for a port, and all subdependencies for those dependencies?

# make all-depends-list

Above command will recurse through all dependencies and print them for you. To test different build scenarios and how they affect the dependency list, try things like:

make NOPORTDOCS=yes NOPORTEXAMPLES=yes all-depends-list

make WITHOUT_X11=yes all-depends-list

Here is the full set of dependency print targets:

make all-depends-list
make build-depends-list
make run-depends-list
make package-depends-list
make pretty-print-build-depends-list
make pretty-print-run-depends-list

http://serverfault.com/questions/334934/freebsd-ports-how-can-i-see-all-dependencies-for-a-port-and-all-subdependencie