$ build-support/bin/release.sh -h
With no options all packages are built, smoke tested and published to
PyPi.  Credentials are needed for this as described in the
release docs: <http://pantsbuild.org/release.html>

Usage: build-support/bin/release.sh [-d] [-c] (-h|-n|-t|-l|-o|-e|-p)
 -d  Enables debug mode (verbose output, script pauses after venv creation)
 -h  Prints out this help message.
       <snip>
 -p  Build a pex from prebuilt wheels for this release.
 -q  Build a pex which only works on the host platform, using the code as exists on disk.

All options (except for '-d') are mutually exclusive.