The built-in pkgsrc help, which is available after bootstrapping pkgsrc. Run bmake help topic=… to get help for any topic, such as a variable name like BUILD_DEFS, a make target like do-build, a missing C or C++ function like strcasecmp or any other topic.

The available help topics are listed in Appendix E, Help topics.

To see the value of a single variable, run bmake show-var VARNAME=X.

To see the values of the most common variables, run bmake show-all. These variables are grouped by topic. To see the variables for a single topic, run bmake show-all-topic, for example bmake show-all-fetch.

The pkgsrc-users mailing list, to which you can subscribe and then ask your questions.

The #pkgsrc IRC channel, which is accessible via a web browser or by using a specialized chat program such as XChat. Pick any user name and join the channel #pkgsrc.