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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.
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This release is the last one before a major redesign of ECL,
which will affect issues like Unicode streams and handling of
interrupts.
Most notable changes since 0.9l include:
- new versioning scheme, based on <year>.<month>.<patchlevel>;
- compiler error, warning, notes and messages handling;
- float point number exceptions handling;
- signals handling;
- improvements to help file;
- improvements to operating system interface;
- CLX 0.7.3;
- many bug fixes.
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ECL stands for Embeddable Common-Lisp. The ECL project is an effort to
modernize Giuseppe Attardi's ECL environment to produce an implementation of
the Common-Lisp language which complies to the ANSI X3J13 definition of the
language.
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