bmake, the NetBSD make(1) tool, is a program designed to simplify the maintenance of other programs.  The input of bmake is a list 
of specifications indicating the files upon which the targets (programs and other files) depend. bmake then detects which targets 
are out of date based on their dependencies and triggers the necessary commands to bring them up to date when that happens.

bmake is similar to GNU make, even though the syntax for the advanced features supported in Makefiles is very different.

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