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.
mowgli is a development framework for C (like GLib), which provides high
performance and highly flexible algorithms. It can be used as a suppliment
to GLib (to add additional functions (dictionaries, hashes), or replace
some of the slow GLib list manipulation functions), or stand alone. It
also provides a powerful hook system and convenient logging for your code,
as well as a high performance block allocator.
