This changes the buildlink3.mk files to use an include guard for the
recursive include. The use of BUILDLINK_DEPTH, BUILDLINK_DEPENDS,
BUILDLINK_PACKAGES and BUILDLINK_ORDER is handled by a single new
variable BUILDLINK_TREE. Each buildlink3.mk file adds a pair of
enter/exit marker, which can be used to reconstruct the tree and
to determine first level includes. Avoiding := for large variables
(BUILDLINK_ORDER) speeds up parse time as += has linear complexity.
The include guard reduces system time by avoiding reading files over and
over again. For complex packages this reduces both %user and %sys time to
half of the former time.
jfranz at bsdprojects dot net.
mcs is a library and set of userland tools which abstract the storage of
configuration settings away from userland applications. It is hoped that by
using mcs, the applications which use it will generally have a more congruent
feeling in regards to settings.
There have been other projects like this before (such as GConf), but unlike
those projects, mcs strictly handles abstraction. It does not impose any
specific data storage requirement, nor is it tied to any desktop environment or
software suite.
Because mcs is licenced under the BSD licence, it is hoped that many
applications will adopt it's use.
