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184ba1b3d5
Details:
- Changed the default installation prefix from $HOME/lib to /usr/local.
- Modified the way configure internally handles the prefix, libdir,
includedir, and sharedir (and also added an --exec-prefix option).
The defaults to these variables are set as follows:
prefix: /usr/local
exec_prefix: ${prefix}
libdir: ${exec_prefix}/lib
includedir: ${prefix}/include
sharedir: ${prefix}/share
The key change, aside from the addition of exec_prefix and its use to
define the default to libdir, is that the variables are substituted
into config.mk with quoting that delays evaluation, meaning the
substituted values may contain unevaluated references to other
variables (namely, ${prefix} and ${exec_prefix}). This more closely
follows GNU conventions, including those used by GNU autoconf, and
also allows make to override any one of the variables *after*
configure has already been run (e.g. during 'make install').
- Updates to build/config.mk.in pursuant to above changes.
- Updates to output of 'configure --help' pursuant to above changes.
- Updated docs/BuildSystem.md to reflect the new default installation
prefix, as well as mention EXECPREFIX and SHAREDIR.
- Changed the definitions of the UNINSTALL_OLD_* variables in the
top-level Makefile to use $(wildcard ...) instead of 'find'. This
was motivated by the new way of handling prefix and friends, which
leads to the 'find' command being run on /usr/local (by default),
which can take a while almost never yielding any benefit (since the
user will very rarely use the uninstall-old targets).
- Removed periods from the end of descriptive output statements (i.e.,
non-verbose output) since those statements often end with file or
directory paths, which get confusing to read when puctuated by a
period.
- Trival change to 'make showconfig' output.
- Removed my name from 'configure --help'. (Many have contributed to it
over the years.)
- In configure script, changed the default state of threading_model
variable from 'no' to 'off' to match that of debug_type, where there
are similarly more than two valid states. ('no' is still accepted
if given via the --enable-debug= option, though it will be
standardized to 'off' prior to config.mk being written out.)
- Minor variable name change in flatten-headers.py that was intended for
32812ff.
- CREDITS file update.