${_EMACS_VERSION_MAJOR} and ${_EMACS_VERSION_MINOR} to determine installed
version of emacs.
Also, set minimum version of _EMACS_REQD to the same as
${_EMACS_VERSION_MAJOR}.${_EMACS_VERSION_MINOR}. Otherwise, buildlink
does not work for emacs lisp libraries.
Should fix PR/42763.
alternative from mk/jpeg.buildlink3.mk
This allows selection of an alternative jpeg library (namely the x86 MMX,
SSE, SSE2 accelerated libjpeg-turbo) via JPEG_DEFAULT=libjpeg-turbo, and
follows the current standard model for alternatives (fam, motif, fuse etc).
The mechanical edits were applied via the following script:
#!/bin/sh
for d in */*; do
[ -d "$d" ] || continue
for i in "$d/"Makefile* "$d/"*.mk; do
case "$i" in *.orig|*"*"*) continue;; esac
out="$d/x"
sed -e 's;graphics/jpeg/buildlink3\.mk;mk/jpeg.buildlink3.mk;g' \
-e 's;BUILDLINK_PREFIX\.jpeg;JPEGBASE;g' \
< "$i" > "$out"
if cmp -s "$i" "$out"; then
rm -f "$out"
else
echo "Edited $i"
mv -f "$i" "$i.orig" && mv "$out" "$i"
fi
done
done
Patches were provided by Makoto Fujiwara in PR 43335.
Excerpt from the announcement:
In addition to a large number of bugfixes, Emacs 23.2 includes
several new packages, such as the CEDET suite of development tools
(including Semantic, a set of libraries and utilities for parsing
source code, and EDE, a package for managing code projects), and a
new mode for editing Javascript. The default mail composition mode
is now Message mode, which provides features such as MIME handling.
Many other part of Emacs have also been improved. For a more
complete list of changes, see the file etc/NEWS.
Major changes:
- Improved Unicode support.
- Font rendering with Fontconfig and Xft.
- Support for using X displays and text terminals in one session, and
for running as a daemon.
- Support for multi-file commits in distributed version-control
systems (VC-dir).
- The default X toolkit is now Gtk+, rather than Lucid.
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.
created or not. Packages that include other ELP's buildlink3.mk must define
EMACS_BUILDLINK. Other packages don't create wrappers, which reduces build
time a lot.
