http://blog.chinaunix.net/u/12258/showart_364246.html
fetch - Retrieves ${DISTFILES} (and ${PATCHFILES} if defined) into ${DISTDIR} as necessary.
fetch-list - Show list of files that would be retrieved by fetch.
fetch-recursive - Retrieves ${DISTFILES} (and ${PATCHFILES} if defined), for port and dependencies into ${DISTDIR} as necessary.
fetch-recursive-list - Show list of files that would be retrieved by fetch-recursive.
fetch-required-list - Show list of files that would be retrieved by fetch-required.
fetch-required - Retrieves ${DISTFILES} (and ${PATCHFILES} if defined), for port and dependencies that are not already installed into ${DISTDIR}.
all-depends-list - Show all directories which are dependencies for this port.
build-depends-list - Show all directories which are build-dependencies for this port.
package-depends-list - Show all directories which are package-dependencies for this port.
run-depends-list - Show all directories which are run-dependencies for this port.
extract - Unpacks ${DISTFILES} into ${WRKDIR}.解压缩distfiles文件，放到port的work目录下
patch - Apply any provided patches to the source.应用补丁
configure - Runs either GNU configure, one or more local configure scripts or nothing, depending on what's available.
build - Actually compile the sources.
install - Install the results of a build.
reinstall - Install the results of a build, ignoring "already installed" flag.
deinstall - Remove the installation.
deinstall-all - Remove all installations with the same PKGORIGIN.
package - Create a package from an _installed_ port.从一个已经安装的port中建立packages
package-recursive - Create a package for a port and _all_ of its dependancies. 从port建立package以及它的所有有依赖关系的package
describe - Try to generate a one-line description for each port for use in INDEX files and the like.
checkpatch - Do a "patch -C" instead of a "patch". Note that it may give incorrect results if multiple patches deal with the same file.
checksum - Use distinfo to ensure that your distfiles are valid.
checksum-recursive - Run checksum in this port and all dependencies.
makesum - Generate distinfo (only do this for your own ports!).
clean - Remove ${WRKDIR} and other temporary files used for building.
clean-depends - Do a "make clean" for all dependencies.
config - Configure options for this port (using ${DIALOG}). Automatically run prior to extract, patch, configure, build, install, and package. 使用$(DIALOG)可以配置这个port的一些选项。自动运行extract,patch,configure,build,install和 package
showconfig - Display options config for this port 显示这个port的配置选项。
rmconfig - Remove the options config for this port
