Fubsy is a tool for efficiently building software. In concrete terms, it lets you conditionally (re)build targets from sources based on which sources have changed since the last build. Typically, targets and sources are all files in a directory tree. In theory, they can be any resource on a computer. More abstractly, Fubsy is an engine for conditional execution of actions based on the dependencies between related resources.
crumb is an experimental build-automation program to provide functionality similar to "make" but with a much better approach, where dependencies for all invocations are automatically detected, by using shared-library level hooks. The spawned processes are also paused if a missing dependency needs to be generated. Oddly, with parallelism, this means that the linker might run before the compiler, but it will get paused until the compiler is done generating the input that it needs. Another purpose of crumb is to provide users with absolutely minimal build description files. This means that the build description files need to be smaller than an equivalent shell script containing the commands that would have built the project directly.
bmake is a program designed to simplify the maintenance of other programs. Its input is a list of specifications as to the files upon which programs and other files depend. If no -f makefile makefile option is given, bmake will try to open 'makefile' and then 'Makefile' in order to find the specifications.
mk-configure is a lightweight replacement for GNU autotools written in and for bmake (a portable version of NetBSD make). The main goal is to have only one top-level tool instead of aclocal+automake+autoconf+autoheader. Other goals are clean design, simplicity, and "no code generation".