|The build.dep.mk module is used by build.prog.mk and build.lib.mk, but is never included directly into makefiles. Its role is to generate .depend files, which are used in the build process to determine if object files need to be rebuilt.|
|build.common.mk, build.prog.mk, build.lib.mk|
|build.dep.mk first appeared in BSDBuild 1.0.
BSDBuild is based on the 4.4BSD build system.