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.
2.0.2
- Bug #16598: address the lack of TLS for sone platforms.
2.0.1
- Bug #14612: no stdbool.h for Sun compilers.
- Bug #14613: check for iconv() const-ness.
- Make the error checking more robust.
- Make error code thread-safe (ie local to the thread).
XMP (Extensible Metadata Platform) facilitates embedding metadata
in files using a subset of RDF. Most notably XMP supports embedding
metadata in PDF and many image formats, though it is designed to
support nearly any file type.
