2020-07-10  Simon J Gerraty  <sjg@beast.crufty.net>

	* dirdeps.mk: optimize content of dirdeps.cache

2020-06-28  Simon J Gerraty  <sjg@beast.crufty.net>

	* sys/*.mk: make it easier for local*sys.mk to customize by
	using ?=

2020-06-22  Simon J Gerraty  <sjg@beast.crufty.net>

	* gendirdeps.mk (LOCAL_DEPENDS_GUARD): if we don't build at level 0
	it is much safer to guard local depends with a simple check for
	.MAKE.LEVEL > 0

2020-06-10  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20200610

	* mkopt.sh: this needs posix shell so #!/bin/sh should be ok

2020-06-06  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20200606

	* dirdeps-targets.mk: allow for filtering of .TARGETS

	* meta2deps.py: fix bug in processing 'L'ink and 'M'ove
	entries - and we don't care about 'W'rite entries.
	Also ignore absolute paths that do not exist.

2020-05-25  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20200525

	* init.mk: expand and simplify handling of qualified vars
	like CPPFLAGS.${.TARGET:T}

2020-05-15  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20200515

	* dirdeps.mk: set _debug_* earlier and allow passing -d*
	flags to submake when building DIRDEPS_CACHE

2020-05-09  Simon J Gerraty  <sjg@beast.crufty.net>

	* whats.mk: more easily extensible

2020-05-02  Simon J Gerraty  <sjg@beast.crufty.net>

	* whats.mk: greatly simplify by adding what.c to SRCS

2020-05-01  Simon J Gerraty  <sjg@beast.crufty.net>

	* whats.mk: for libs take care how we add to *OBJS

	* lib.mk: : works better with whats.mk

2020-04-25  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20200420

	* meta.stage.mk: it is not a STAGE_CONFLICT if some-target.dirdep
	contains the same ${RELDIR} and a prefix match for our ${TARGET_SPEC}

2020-04-16  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20200416

	* sys/*.mk: set MAKE_SHELL rather than SHELL so as not to
	  interfere with user env.

	* sys.mk: default MAKE_SHELL to sh and SHELL to MAKE_SHELL

	* autodep.mk: use MAKE_SHELL.

2019-11-21  Simon J Gerraty  <sjg@beast.crufty.net>

	* gendirdeps.mk: clear .SUFFIXES to avoid a lot of
	  wasted effort, and unexport _meta_files when no longer needed as
	  it consumes space we need for command line.

2019-11-11  Simon J Gerraty  <sjg@beast.crufty.net>

	* dirdeps.mk _DIRDEP_USE: use DIRDEP_DIR and add
	  DIRDEP_USE_PRELUDE at start - facilitates job distribution

2019-10-04  Simon J Gerraty  <sjg@beast.crufty.net>

	* dirdeps-targets.mk: Use TARGET_SPEC_LAST_LIST
	defaults to ${${TARGET_SPEC_VARS:[-1]}_LIST} to match valid
	TARGET_SPEC qualified depend files.

2019-10-02  Simon J Gerraty  <sjg@beast.crufty.net>

	* dirdeps-targets.mk: encapsulate logic for finding top-level
	  targets to set initial DIRDEPS for DIRDEPS_BUILD

2019-09-27  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20190911

	* compiler.mk: set COMPILER_TYPE

2019-07-17  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20190704

	* sys/Darwin.mk: support for Objective-C and clang

2019-05-30  Simon J Gerraty  <sjg@beast.crufty.net>

	* dirdeps.mk: avoid insanely long command line when generating cache

2019-05-23  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20190505

	* whats.mk: handle corner case SHLIB defined but not LIB

2018-09-19  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20180919

	* dirdeps-options.mk: .undef cannot handle var that expands to
	  more than one var. 

2018-07-08  Simon J Gerraty  <sjg@beast.crufty.net>

	* meta.stage.mk: allow wildcards in STAGE_FILES.* etc.

2018-06-01  Simon J Gerraty  <sjg@beast.crufty.net>

	* meta.autodep.mk: export META_FILES to avoid command line limit
	* gendirdeps.mk: if we have lots of .meta files put them in
	  an @list

2018-05-28  Simon J Gerraty  <sjg@beast.crufty.net>

	* dirdeps-options.mk: use local.dirdeps-options.mk
	  not local.dirdeps-option.mk

2018-04-20  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20180420
	* dirdeps.mk: include local.dirdeps-build.mk when .MAKE.LEVEL > 0
	  ie. we are building something.

2018-04-14  Simon J Gerraty  <sjg@beast.crufty.net>

	* FILES: add dirdeps-options.mk to deal with optional DIRDEPS.

2018-04-05  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20180405

	* ldorder.mk: describe how to use LDORDER_EXTERN_BARRIER
	  if needed.

2018-01-18  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20180118

	* ldorder.mk: let make compute correct link order

2017-12-12  Simon J Gerraty  <sjg@beast.crufty.net>

	* install-mk (MK_VERSION): 20171212

	* gendirdeps.mk: guard against bogus entries in GENDIRDEPS_FILTER

2017-11-14  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20171111

	* lib.mk: ensure META_NOECHO is set

2017-10-25  Simon J. Gerraty  <sjg@bad.crufty.net>

	* Allow for host32 on rare occasions.

2017-10-18  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20171018

	* whats.mk: include what_thing in what_uuid to avoid problem
	  when building multiple apps in the same directory.

2017-08-12  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170812

	* autoconf.mk: Use CONFIGURE_DEPS so Makefile can
	  add dependencies for config.recheck and config.gen

2017-06-30  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170630

	* meta.stage.mk: avoid triggering stage_* targets with nothing to do.

2017-05-23  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta2deps.py: take special care of '..'

2017-05-15  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170515

	* dirdeps.mk (DEP_EXPORT_VARS): on rare occasions it is
	useful/necessary for a Makefile.depend file to export some knobs.
	This is complicated when we are doing DIRDEPS_CACHE, so we will
	handle export of any variables listed in DEP_EXPORT_VARS.

2017-05-08  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170505

	* meta2deps.py: fix botched indenation.

2017-05-05  Simon J. Gerraty  <sjg@bad.crufty.net>

	* sys/*.mk: Remove setting of MAKE it is unnecessary and
	  in many cases wrong (basname rather than full path)

	* scripts.mk (SCRIPTSGROUPS): make this more like files.mk and inc.mk

	* init.mk: define realbuild to simplify logic in {lib,prog}.mk etc

2017-05-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170501

	* doc.mk: fix typo in DOC_INSTALL_OWN

	* inc.mk: handle INCGROUPS similar to freebsd

	* files.mk: add something for files too

	* add staging logic to lib.mk prog.mk etc.

2017-04-24  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170424

	* dirdeps.mk: set NO_DIRDEPS when bootstrapping.
	  also target of bootstrap-this when sed is needed should be ${_want:T}

2017-04-18  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170418

	* auto.obj.mk: if using MAKEOBJDIRPREFIX check if it is a
	  prefix match for .CURDIR - in which case .CURDIR *is* __objdir.

2017-04-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170401

	* meta2deps.py: add is_src so we can check if obj dependency
	  is also a src dependency.

2017-03-26  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170326

	* meta.stage.mk: do nothing if NO_STAGING is defined.

2017-03-24  Simon J. Gerraty  <sjg@bad.crufty.net>

	* auto.obj.mk: handle the case of __objdir=obj or obj.${MACHINE} etc.

2017-03-18  Simon J. Gerraty  <sjg@bad.crufty.net>

	* mkopt.sh: treat WITH_*=NO like no; ie. WITHOUT_*

2017-03-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170301

	* dirdeps.mk (_build_all_dirs): update this outside test for empty
	  DIRDEPS.

	* meta.stage.mk: allow multiple inclusion to the extent it makes
	  sense.

2017-02-14  Simon J. Gerraty  <sjg@bad.crufty.net>

	* prog.mk (install_links): depends on realinstall

2017-02-12  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170212

	* dpadd.mk: avoid applying :T:R twice to DPLIBS entries

2017-01-30  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20170130

	* dirdeps.mk: use :range if we can.

	* sys.vars.mk: provide M_cmpv if MAKE_VERSION >= 20170130

	* meta2deps.py: clean paths without using realpath() where possible.
	  fix sort_unique.

2016-12-12  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20161212
	
	* meta2deps.py: set pid_cwd[pid] when we process 'C'hdir, 
	rather than when we detect pid change.

2016-12-07  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20161207

	* meta.stage.mk: add stage_as_and_symlink for staging packages.
	  We build foo.tgz stage_as foo-${VERSION}.tgz but want to be able
	  to use foo.tgz to reference the latest staged version - so we
	  make foo.tgz a symlink to it.
	  Using a target to do both operations ensures we stay in sync.
	
2016-11-26  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20161126

	* dirdeps.mk: set DIRDEPS_CACHE before we include local.dirdeps.mk
	  so it can add dependencies.

2016-10-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: set DEP_* before we expand .MAKE.DEPENDFILE_PREFERENCE
	  do that they can influence the result correctly.

	* dirdeps.mk (${DIRDEPS_CACHE}): make sure we pass on TARGET_SPEC

	* dirdeps.mk: Add ONLY_TARGET_SPEC_LIST and NOT_TARGET_SPEC_LIST
	  similar to ONLY_MACHINE_LIST and NOT_MACHINE_LIST

2016-10-05  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: remove dependence on jot (normal situations anyway).
	  Before we read another Makefile.depend* set DEP_* vars from
	  _DEP_TARGET_SPEC in case it uses any of them with :=
	  When bootstrapping, trim any ,* from extention of chosen _src
	  Makefile.depend* to get the machine value we subst for.

2016-09-30  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: use TARGET_SPEC_VARS to qualify components added to
	  DEP_SKIP_DIR and DEP_DIRDEPS_FILTER

	* sys.mk: extract some bits to sys.{debug,vars}.mk
	  for easier re-use by others.

2016-09-23  Simon Gerraty  <sjg@sjg-mba13>

	* lib.mk: Use ${PICO} for extension for PIC objects.
	  default to .pico (like NetBSD) safe on case insensitive filesystem.

2016-08-19  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.sys.mk (META_COOKIE_TOUCH): use ${.OBJDIR}/${.TARGET:T} as default

2016-08-15  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160815

	* dirdeps.mk (.MAKE.META.IGNORE_FILTER): set filter to only
	consider Makefile.depend* when checking if DIRDEPS_CACHE is up-to-date.

2016-08-13  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.sys.mk (.MAKE.META.IGNORE_PATHS): 
	  in meta mode we can ignore the mtime of makefiles

2016-08-02  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160802
	
	* lib.mk (libinstall): depends on beforinstall

	* prog.mk (proginstall): depends on beforinstall
	  patch from Lauri Tirkkonen
	
	* dirdeps.mk (bootstrap): When bootstrapping; creat
	.MAKE.DEPENDFILE_DEFAULT and allow additional filtering via
	.MAKE.DEPENDFILE_BOOTSTRAP_SED

	* dirdeps.mk: move some comments to where they make sense.

2016-07-27  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk (DIRDEPS_CACHE): no dirname.

2016-06-02  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160602
	* meta.autodep.mk: when passing META_FILES to gendirdeps.mk
	  do not apply :T to META_XTRAS
	  patch from Bryan Drewery at FreeBSD.org.

2016-05-30  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160530
	* meta.stage.mk: we assume ${CLEANFILES} gets .NOPATH
	  make it so.
	
2016-05-12  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160512

	* dpadd.mk: always include local.dpadd.mk if it exists
	  remove some things that better belong in local.dpadd.mk
	  skip INCLUDES_* for staged libs unless SRC_* defined.

	* own.mk: add INCLUDEDIR
	
2016-04-18  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: when doing -f dirdeps.mk if target suppies no
	  TARGET_MACHINE - :E will be empty or match part of path, use
	  ${MACHINE}

2016-04-07  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.autodep.mk: issue a warning if UPDATE_DEPENDFILE=NO due to
	  NO_FILEMON_COOKIE  

	* dirdeps.mk: move the logic that allows for 
	  make -f dirdeps.mk some/dir.${TARGET_SPEC}
	  inside the check for !target(_DIRDEP_USE)

2016-04-04  Simon J. Gerraty  <sjg@bad.crufty.net>

	* Use <> when including local*.mk and others which may exist
	  elsewhere so that user can better control what they get.
	
	* meta.autodep.mk (NO_FILEMON_COOKIE): 
	  create a cookie if we ever build dir with nofilemon
	  so that UPDATE_DEPENDFILE will be forced to NO until cleaned.

2016-04-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160401
	
	* meta2deps.py: fix old print statement when debugging.

	* gendirdeps.mk: META2DEPS_CMD append M2D_EXCLUDES with -X
	  patch from Bryan Drewery

2016-03-22  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160317 (St. Pats)
	
	* warnings.mk: g++ does not like -Wimplicit
	
	* sys.mk sys/*.mk lib.mk prog.mk: use CXX_SUFFIXES to handle the
	  pelthora of common suffixes for C++
	
	* lib.mk: use .So for shared objects

2016-03-15  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160315

	* meta.stage.mk (LN_CP_SCRIPT): do not ln(1) if we have to chmod(1)
	  normally only applies to scripts.
	
	* dirdeps.mk: NO_DIRDEPS_BELOW to supress DIRDEPS below RELDIR as
	  well as outside it. 

2016-03-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160310

	* dirdeps.mk: use targets rather than a list to track DIRDEPS that
	  we have processed; the list gets very inefficient as number of
	  DIRDEPS gets large.

	* sys.dependfile.mk: fix comment wrt MACHINE

	* meta.autodep.mk: ignore staged DPADDs when bootstrapping.
	  patch from Bryan Drewery

2016-03-02  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta2deps.sh: don't ignore subdirs.
	  patch from Bryan Drewery

2016-02-26  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160226

	* gendirdeps.mk: mark _DEPENDFILE .NOMETA

2016-02-20  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: we shouldn't normally include .depend but if we do
	  use .dinclude if we can.

2016-02-18  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20160218
	* sys.clean-env.mk: with recent change to Var_Subst()
	  we cannot use the '$$' trick, but .export-literal does the job
	  we need.
	* auto.dep.mk: make use .dinclude if we can.
	

2016-02-05  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: 
	  Add _build_all_dirs such that local.dirdeps.mk can
	  add fully qualified dirs to it.
	  These will be built normally but the current 
	  DEP_RELDIR will not depend on then (to avoid cycles).
	  This makes it easy to hook things like unit-tests into build.
	

2016-01-21  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: add bootstrap-empty

2015-12-12  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20151212
	* auto.obj.mk: do not require MAKEOBJDIRPREFIX to exist.
	  only apply :tA to __objdir when comparing to .OBJDIR

2015-11-14  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20151111

	* meta.sys.mk: include sys.dependfile.mk

	* sys.mk (OPTIONS_DEFAULT_NO): use options.mk
	  to set MK_AUTO_OBJ and MK_DIRDEPS_BUILD
	  include local.sys.env.mk early
	  include local.sys.mk later
	
	* own.mk (OPTIONS_DEFAULT_NO): AUTO_OBJ etc moved to sys.mk

2015-11-13  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.sys.mk (META_COOKIE_TOUCH):
	  add ${META_COOKIE_TOUCH} to the end of scripts to touch cookie

	* meta.stage.mk: stage_libs should ignore SYMLINKS.

2015-10-23  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20151022

	* sys.mk: BSD/OS does not have 'type' as a shell builtin.

2015-10-20  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20151020
	
	* dirdeps.mk: Add logic for 
	  make -f dirdeps.mk some/dir.${TARGET_SPEC}

2015-10-14  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20151010

2015-10-02  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.stage.mk: use staging: ${STAGE_TARGETS:...
	  to have stage_lins run last in non-jobs mode.
	  Use .ORDER only for jobs mode.

2015-09-02  Simon J. Gerraty  <sjg@bad.crufty.net>

	* rst2htm.mk: allow for per target flags etc.

2015-09-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20150901

	* doc.mk: create dir if needed use DOC_INSTALL_OWN

2015-06-15  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20150615
	
	* auto.obj.mk: allow use of MAKEOBJDIRPREFIX too.
	  Follow make's normal precedence rules.
	
	* gendirdeps.mk: allow customization of the header.
	  eg. for FreeBSD: 
	  GENDIRDEPS_HEADER= echo '\# ${FreeBSD:L:@v@$$$v$$ @:M*F*}';

	* meta.autodep.mk: ignore dirdeps.cache*
	
	* meta.stage.mk: when bootstrapping options it can be handy to
	  throw warnings rather than errors for staging conflicts.

	* meta.sys.mk: include local.meta.sys.mk for customization

2015-06-06  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20150606
	
	* dirdeps.mk: don't rely on manually maintained Makefile.depend
	  to set DEP_RELDIR and reset DIRDEPS.
	  By setting DEP_RELDIR ourselves we can skip :tA
	
	* gendirdeps.mk: skip setting DEP_RELDIR.

2015-05-24  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: avoid wildcards like make(bootstrap*)

2015-05-20  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20150520

	* dirdeps.mk: when we are building dirdeps cache file we *want*
	  meta_oodate to look at all the Makefile.depend files, so
	  set .MAKE.DEPENDFILE to something that won't match.

	* meta.stage.mk: for STAGE_AS_* basename of file may not be unique
	  so first use absolute path as key.
	  Also skip staging at level 0. 

2015-04-30  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20150430
	
	* dirdeps.mk: fix _count_dirdeps for non-cache case.

2015-04-16  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20150411
	  bump version
	
	* own.mk: put AUTO_OBJ in OPTIONS_DEFAULT_NO rather than YES.
	  it is here mainly for documentation purposes, since
	  if using auto.obj.mk it is better done via sys.mk

2015-04-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20150401
	
	* meta2deps.sh: support @list
	
	* meta2deps.py: updates from Juniper
	  o add EXCLUDES 
	  o skip bogus input files.
	  o treat 'M' and 'L' as both an 'R' and a 'W'

2015-03-03  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20150303
	
	* dirdeps.mk: if MK_DIRDEPS_CACHE is yes, use dirdeps-cache
	  which is built via sub-make so we have a .meta file to tell if
	  it is out-of-date. 
	  The dirdeps-cache contains the same dependency rules that we
	  normaly construct on the fly.
	  This adds a few seconds overhead when the cache is out of date,
	  but for a large target, the savings can be significant (10-20min).

2014-11-18  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20141118
	
	* meta.stage.mk: add stale_staged
	
	* dirdeps.mk (_DIRDEP_USE_LEVEL): allow this to be tweaked
	  only useful under very rare conditions such as
	  FreeBSD's make universe.

	* auto.obj.mk: Allow MK_AUTO_OBJ to set MKOBJDIRS=auto
	
2014-11-11  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20141111

	* mkopt.sh: use consistent semantics for _mk_opt and _mk_opts

2014-11-09  Simon J. Gerraty  <sjg@bad.crufty.net>

	* FILES: include mkopt.sh which allows handling options in shell
	  scripts in a manner compatible with options.mk

2014-10-12  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.stage.mk: ensure only _STAGED_DIRS under objroot are used
	  for GENDIRDEPS_FILTER to avoid surprises.

2014-10-10  Simon J. Gerraty  <sjg@bad.crufty.net>
	
	* dirdeps.mk (NSkipHostDir): this needs SRCTOP prepended since by
	  the time it is applied to __depdirs they have.
	
	* dirdeps.mk fix filtering of _machines since M_dep_qual_fixes
	  expects patterns like *.${MACHINE}
	
	* cython.mk (pyprefix?): use pyprefix to find python bits
	  since prefix might be something else (where we install our
	  stuff)
	
2014-09-11  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20140911
	
	* dirdeps.mk: add bootstrap target to simplify adding support for
	  new MACHINE.
	
2014-09-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* gendirdeps.mk: Add handling of GENDIRDEPS_FILTER_DIR_VARS and
	  GENDIRDEPS_FILTER_VARS to make it easier to produce sharable
	  Makefile.depend files.

2014-08-28  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20140828
	
	* cython.mk: capture logic for building python extension modules
	  with Cython.

2014-08-08  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.stage.mk (_STAGE_AS_BASENAME_USE): Add StageAs variant

2014-08-02  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20140801

	* dep.mk: use explicit MKDEP_MK rather than overload MKDEP to
	identify the autodep.mk variant. 
	
	* sys.dependfile.mk: delete .MAKE.DEPENDFILE if its
	initial value does not match .MAKE.DEPENDFILE_PREFIX

	* meta.autodep.mk: if _bootstrap_dirdeps add RELDIR to DIRDEPS

2014-05-22  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20140522

	* lib.mk: use CC to link shlib for linux too
	  patch from Brendan MacDonell

2014-05-05  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.autodep.mk: add _reldir_{finish,failed} for gathering stats
	  if WITH_META_STATS is defined.

2014-05-02  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: accept -DWITHOUT_DIRDEPS (same a as -DNO_DIRDEPS)
	  to supress dirdeps outside of .CURDIR.

2014-04-05  Simon J. Gerraty  <sjg@bad.crufty.net>

	* Fix spelling errors - patch from Pedro Giffuni

2014-03-14  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20140314

	* dirdeps.mk (beforedirdeps): a handy hook

	* dirdeps.mk (DIRDEP_MAKE): allow the actual command we run
	  to visit leaf dirs to be intercepted (eg. for distributed
	  build).

	* dirdeps.mk (__depdirs): ensure // don't sneak in
	
	* gendirdeps.mk (DIRDEPS): ensure // don't sneak in


2014-02-21  Simon J. Gerraty  <sjg@bad.crufty.net>

	* rst2htm.mk (RST2PDF): add support for rst2pdf

2014-02-14  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version
	* dirdeps.mk (_last_dependfile): use .INCLUDEDFROMFILE if
	  available.

2014-02-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* options.mk: avoid :U so this isn't bmake dependent

2014-02-09  Simon J. Gerraty  <sjg@bad.crufty.net>

	* options.mk: cleanup and simplify semanitcs 
	  NO_* dominates all, if both WITH_* and WITHOUT_*
	  are defined then result is DOMINATE_* which defaults to "no".
	  Ie. WITHOUT_ normally wins.

2013-12-12  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version
	* meta2deps.py: convert to print function for python3 compat.
	  we also need to open files with mode 'r' rather than 'rb'
	  otherwise we get bytes instead of strings.

2013-10-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version

	* dirdeps.mk: when TARGET_SPEC_VARS is more than just MACHINE
	  apply the same filtering (M_dep_qual_fixes) when setting _machines
	  as _build_dirs.
	  Also fix the filtering of Makefile.depend files - for reporting
	  what we are looking for (M_dep_qual_fixes can get confused by
	  Makefile.depend) 
	  Add some more debug info.

2013-09-04  Simon J. Gerraty  <sjg@bad.crufty.net>

	* gendirdeps.mk (_objtops): fix typo also
	  while processing M2D_OBJROOTS to gather qualdir_list
	  qualify $ql with loop iterator to ensure correct results.

2013-08-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20130801
	* libs.mk: update to match progs.mk
	
2013-07-26  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20130726
	  some updates from Juniper and FreeBSD
	  o meta2deps.py: indicate file and line number when we hit parse
	    errors
	    also allow @file to provide huge list of .meta files.
	* meta2deps.py: add try_parse() to cleanup the above.
	
2013-07-16  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20130716
	* own.mk: add GPROG as an option
	* prog.mk: honor MK_GPROF==yes
	
2013-05-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20130505
	* gendirdeps.mk, meta2deps.py, meta2deps.sh: handle $TARGET_SPEC
	  for when $MACHINE isn't enough for objdir distinction.
	  Bring meta2deps.sh closer to par with meta2deps.py.

2013-04-18  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.stage.mk: set INSTALL to STAGE_INSTALL when making 'all'
	  also if the target 'beforeinstall' exists, make it depend on
	  .dirdep (incase it uses STAGE_INSTALL).

2013-04-17  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): 20130401 ;-)
	* meta.stage.mk (STAGE_INSTALL_SH): add stage-install.sh as
	  wrapper around install(1).
	* options.mk (OPTION_PREFIX): Allow a prefix other than MK_

2013-03-30  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta2deps.py (MetaFile.__init__): ensure self.cwd is initialized.
	* install-mk (MK_VERSION): bump version

2013-03-21  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version
	* gendirdeps.mk: do not apply :tA to DPADD entries, since we lose
	  any trailing /., rather apply :tA only when needed.
	* gendirdeps.mk: better mimic meta2deps handling of .dirdep files.
	* meta.stage.mk (LN_CP_SCRIPT): Add LnCp to do the ln||cp dance
	  consistently.
	* dirdeps.mk: better describe the dance in sys.mk for TARGET_SPEC.
	
2013-03-18  Simon J. Gerraty  <sjg@bad.crufty.net>

	* gendirdeps.mk: revert the dance around .MAKE.DEPENDFILE_DEFAULT
	  it is simpler to just not update when say building for "host"
	  (where we know we apply filters to DIRDEPS), and using a
	  non-machine qualified dependfile.

2013-03-16  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: improve DIRDEPS filtering by allowing DEP_SKIP_DIR
	  and DEP_DIRDEPS_FILTER to vary by DEP_MACHINE and DEP_TARGET_SPEC
	* gendirdeps.mk: ensure _objroot has trailing / if it needs it.
	* meta2deps.py: if machine is "host", then also trim
	  self.host_target from any OBJROOTS.
	

2013-03-11  Simon J. Gerraty  <sjg@bad.crufty.net>

	* gendirdeps.mk: if .MAKE.DEPENDFILE_DEFAULT is not machine
	  qualified but _DEPENDFILE is, and .MAKE.DEPENDFILE_DEFAULT exists
	  but _DEPENDFILE does not, compare the new _DEPENDFILE against
	  .MAKE.DEPENDFILE_DEFAULT and discard if the same.

2013-03-08  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.stage.mk: use STAGE_TARGETS to control .ORDER
	  and hook to all: via staging:

2013-03-07  Simon J. Gerraty  <sjg@bad.crufty.net>

	* sys.dependfile.mk (.MAKE.DEPENDFILE_DEFAULT): 
	  use a separate variable for the default .MAKE.DEPENDFILE value
	  so that it can be controlled independently of
	  .MAKE.DEPENDFILE_PREFERENCE

	* meta.stage.mk: throw error if cp fails etc.
	  Stage*() return early if passed no args.
	  .ORDER stage_*

2013-03-03  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version
	* gendirdeps.mk: handle multiple M2D_OBJROOTS better.

2013-02-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20130210
	* import latest dirdeps.mk, gendirdeps.mk and meta2deps.py 
	  from Juniper. 
	  o dirdeps.mk now fully supports TARGET_SPEC consisting of more
	    than just MACHINE.
	  o no longer use DEP_MACHINE from Makefile.depend* so remove it.
	
2013-01-23  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20130123
	* meta.stage.mk: add stage_links (hard links).
	  if doing hard links, we add dest to link as well.
	  Default the stage dir for [sym]links to STAGE_OBJTOP since
	  these are typically specified as absolute paths.
	  Add -m "mode" flag to StageFiles and StageAs.

2012-11-11  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20121111
	* autoconf.mk: avoid meta mode seeing changed commands for config.status
	* meta.autodep.mk: pass resolved MAKESYSPATH to gendirdeps
	  in case we were found via .../mk
	* sys.clean-env.mk: move it from examples, we and others use it
	  "as is".
	* FILES: add srctop.mk and options.mk
	* own.mk: convert to using options.mk
	  which is modeled after FreeBSD's handling of MK_*
	  but more flexible.
	  This allows MK_* for boolean knobs to not be confused
	  with MK* which can be commands.

	* examples/sys.clean-env.mk: add WITH[OUT]_ to
	  MAKE_ENV_SAVE_PREFIX_LIST.
	  Mention that HOME=/var/empty might be a good idea.

2012-11-08  Simon J. Gerraty  <sjg@bad.crufty.net>

	* sys.dependfile.mk: if not depend file exists, $MACHINE
	  specific ones are supported but not the default,
	  check if any exist and follow suit.

2012-11-06  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20121106

2012-11-05  Simon J. Gerraty  <sjg@bad.crufty.net>

	* import latest dirdeps.mk and meta2deps.py from Juniper.
	* progs.mk: add MAN and CXXFLAGS to PROG_VARS
	  also add PROGS_TARGETS and pass on PROG_CXX if it seems
	  appropriate.
	
2012-11-04  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.stage.mk: update CLEANFILES
	  remove redundant cp of .dirdep from STAGE_AS_SCRIPT.
	* progs.mk: Add LDADD to PROG_VARS
	
2012-10-12  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.stage.mk (STAGE_DIR_FILTER): track dirs we stage to in
	  _STAGED_DIRS so that these can be turned into filters for
	  GENDIRDEPS_FILTER.

2012-10-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20121010
	* meta.stage.mk (STAGE_DIRDEP_SCRIPT): check that an existing
	target.dirdep matches .dirdep

2012-08-08  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20120808
	* import latest meta2deps.py from Juniper.

2012-07-11  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20120711
	* dep.mk: add explicit dependencies on SRCS after applying
	  SRCS_DEP_FILTER 
	* meta.autodep.mk: add explicit dependencies on SRCS after
	  applying SRCS_DEP_FILTER
	* meta.autodep.mk: ensure GENDIRDEPS_FILTER is exported if needed.
	
2012-06-26  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20120626
	* meta.sys.mk: ignore PYTHON if it does not exist
	  compare ${.MAKE.DEPENDFILE:E} against ${MACHINE} is more reliable.
	* meta.stage.mk: examine .MAKE.DEPENDFILE_PREFERENCE for any
	  entries ending in .${MACHINE} to decide if qualified _dirdep is
	  needed.
	* gendirdeps.mk: only produce unqualified deps if no
	  .MAKE.DEPENDFILE_PREFERENCE ends in .${MACHINE}
	* meta.subdir.mk: apply SUBDIRDEPS_FILTER
	
2012-04-20  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20120420
	* add sys.dependfile.mk so we can experiment with
	  .MAKE.DEPENDFILE_PREFERENCE 
	* meta.autodep.mk: _DEPENDFILE is precious!
	
2012-03-15  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20120315
	* install-new.mk: avoid being interrupted

2012-02-26  Simon J. Gerraty  <sjg@bad.crufty.net>

	* man.mk: MAN might have multiple values so be careful with exists().

2012-01-19  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20120112
	* fix examples/sys.clean-env.mk so that MAKEOBJDIR is handled
	  as: MAKEOBJDIR='${.CURDIR:S,${SRCTOP},${OBJTOP},}'

2011-12-03  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION):  bump version to 20111201
	* import dirdeps.mk from Juniper sjg@
	  o more consistent handling of DEP_MACHINE, especially when
	    dealing with an odd Makefile.depend, when normally using
	    Makefile.depend.${MACHINE}

2011-11-22  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20111122
	* meta.autodep.mk: add some debug output, be more crisp about
	  updating.  Use ${.ALLTARGETS:M*.o} as a clue for .depend

2011-11-13  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20111111
	  it's too cool to miss
	* import meta* updates from Juniper sjg@
	  o dirdeps.mk set DEP_MACHINE for Makefile.depend (when we are
	    normally using Makefile.depend.${MACHINE}), handy for
	    read-only manually maintained dependencies.
	  o meta2deps.py add a clear 'ERROR:' token if an exception is raised.
	  o gendirdeps.mk if ERROR: from meta2deps.py do not update
	    anything.
	
2011-10-30  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-new.mk separate the cmp and copy logic to its own function.
	
2011-10-28  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20111028
	* sys.mk: include auto.obj.mk if MKOBJDIRS is set to auto
	* subdir.mk: ensure _SUBDIRUSE is provided
	* meta.autodep.mk: remove dependency of gendirdeps.mk on auto.obj.mk 
	* meta.subdir.mk: always allow for Makefile.depend
	
2011-10-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20111010
	  o minor tweak to *dirdeps.mk from Juniper sjg@
	
2011-10-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20111001
	  o add meta2deps.py from Juniper sjg@
	  o tweak gendirdeps.mk to work with meta2deps.py when not
	    cross-building 
	* autoconf.mk: add autoconf-input as a hook for regenerating 
	  AUTOCONF_INPUTS (configure).

2011-08-24  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.autodep.mk: if we do not have OBJS, .depend isn't a useful
	  trigger for updating Makefile.depend* 

2011-08-08  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20110808
	* obj.mk: minor cleanup
	* auto.obj.mk: improve description of Mkdirs and honor NO_OBJ too.

2011-08-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* auto.obj.mk (.OBJDIR): throw an error if we cannot use the
	  specified dir.

2011-06-28  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.autodep.mk: if XMAKE_META_FILE is set
	  the makefile uses a foreign make, and so dependencies
	  can only be gathered from a clean tree build.

2011-06-24  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20110622
	* meta.autodep.mk: improve bootstraping

2011-06-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* yacc.mk: handle the corner case of .c being removed
	  while .h remains.

2011-06-08  Simon J. Gerraty  <sjg@bad.crufty.net>

	* yacc.mk: do .y.h and .y.c separately

2011-06-04  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20110606
	* don't store SRC_DIRDEPS in Makefile.depend* by default
	  not everyone needs it.

2011-05-04  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20110505
	  first release including meta mode makefiles

2011-05-02  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.stage.mk: add STAGE_AS_SETS and stage_as
	  for things that need to be staged with different names.

2011-05-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.stage.mk: add notion of STAGE_SETS
	  so a makefile can stage to multiple dirs

2011-04-03  Simon J. Gerraty  <sjg@bad.crufty.net>

	* rst2htm.mk: convert rst to s5 (slides) or plain html depending
	  on target name. 

2011-03-30  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20110330

2011-03-29  Simon J. Gerraty  <sjg@bad.crufty.net>

	* sys.mk (_DEBUG_MAKE_FLAGS): use indirection so that DEBUG_MAKE_FLAGS0
	  can be used to debug level 0 only and DEBUG_MAKE_FLAGS for the rest.
	* sys.mk: re-define M_whence in terms of M_type.
	  M_type is useful for checking if something is a builtin.
	
2011-03-16  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.stage.mk: add stage_symlinks and leverage StageLinks for
	  stage_libs 

2011-03-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dirdeps.mk: correct value for _depdir_files depends on
	  .MAKE.DEPENDFILE 
	  Add our copyright - just to make it clear we have frobbed this
	  quite a bit.
	  DEP_MACHINE needs to be set to MACHINE each time, if using only
	  Makefile.depend (cf. Makefile.depend.${MACHINE})

	* meta.stage.mk: meta mode version of staging

	* init.mk, final.mk: include local.*.mk to simplify customization

2011-03-03  Simon J. Gerraty  <sjg@bad.crufty.net>

	* auto.obj.mk: just because we are doing mk destroy, we should
	  still set .OBJDIR correctly if it exists.

	* install-mk (mksrc): do not exclude meta.sys.mk

2011-03-01  Simon J. Gerraty  <sjg@bad.crufty.net>

	* host-target.mk: set/export _HOST_ARCH etc separately,
	  catch junk resulting from uname -p, so we can find sys/Linux.mk
	  correctly.

2011-02-18  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.sys.mk: throw an error if /dev/filemon is missing and we
	  expected to be updating Makefile.depend*

2011-02-14  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20110214
	* meta.subdir.mk: add support for -DBOOTSTRAP_DEPENDFILES

2010-09-25  Simon J. Gerraty  <sjg@bad.crufty.net>

	* meta.sys.mk: not valid for older bmake

2010-09-24  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20100919
	include dirdeps.mk et al from Juniper Networks, 
	for meta mode - requires filemon(9).
	* sys.mk, subdir.mk: Add hooks for meta mode.
	we do this as meta.sys.mk, meta.autodep.mk and meta.subdir.mk
	to make turning it on/off simple.

2010-06-16  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20100616
	* fix typo in sys.mk

2010-06-12  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20100612
	* lib.mk: remove duplicate addition to SOBJS

2010-06-10  Simon J. Gerraty  <sjg@bad.crufty.net>

	* sys.mk: Add a means of selectively turning on debug flags.
	  Eg. DEBUG_MAKE_FLAGS=-dv DEBUG_MAKE_DIRS="*lib/sjg"
	  will act as if we did make -dv if .CURDIR ends in lib/sjg
	  DEBUG_MAKE_SYS_DIRS does the same thing, but we set the flags at
	  the start of sys.mk rather than the end.
	  This only makes sense for leaf dirs, so we check that
	  .MAKE.LEVEL > 0

2010-06-09  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20100608
	* sys.mk: include sys.env.mk later so it can use M_ListToSkip et al.
	* examples/sys.clean-env.mk: require MAKE_VERIONS >= 20100606
	  also make it easier for folk to tweak

2010-06-08  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20100606
	  do not install examples/*
	* FILES: add examples/sys.clean-env.mk
	* examples/sys.clean-env.mk: use .export-env to handle MAKEOBJDIR
	  this requires bmake-20100606 or later to work.

2010-05-13  Simon J. Gerraty  <sjg@bad.crufty.net>

	* sys.mk (M_tA): better simulate the result of :tA if not available.

2010-05-04  Simon J. Gerraty  <sjg@bad.crufty.net>

	* sys.mk: canonicalize MAKE_VERSION
	  old versions reported bmake-<src-date> build-<build-date>
	  whereas we only care about <src-date>

2010-04-25  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk: just warn about FORCE_{BSD,SYS}_MK being ignored
	* lib.mk: we only build the shared lib if SHLIB_FULLVERSION
	  is !empty

2010-04-22  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dpadd.mk: use LDADD_* if defined.

2010-04-21  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20100420
	* sys/NetBSD.mk: add MACHINE_CPU to keep netbsd makefiles happy
	* autoconf.mk allow AUTO_AUTOCONF
	
2010-04-19  Simon J. Gerraty  <sjg@bad.crufty.net>

	* obj.mk: add objwarn to keep freebsd makefiles happy
	* auto.obj.mk: ensure Mkdirs is available.
	* FILES: add auto.dep.mk - a simpler version of autodep.mk
	* dep.mk: auto.dep.mk does not do 'make depend' so ignore it if
	  asked to do that.
	  fix/simplify the tests for when to run mkdep.
	* auto.dep.mk: add some explanation of how/what we do.
	* autodep.mk: skip the .OPTIONAL frobbing of .depend
	  bmake's FROM_DEPEND flag makes it redundant.
	
2010-04-13  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20100404
	* subdir.mk: protect from multiple inclusion using _SUBDIRUSE.
	* obj.mk: protect from multiple inclusion even as bsd.obj.mk
	Also create a target _SUBDIRUSE so that we can  be used without
	subdir.mk

2010-04-12  Simon J. Gerraty  <sjg@bad.crufty.net>

	* dep.mk: use <> when .including so can override.

2010-01-11  Simon J. Gerraty  <sjg@bad.crufty.net>

	* lib.mk (SHLIB_LINKS): ensure a string comparison.

2010-01-04  Simon J. Gerraty  <sjg@bad.crufty.net>

	* install-mk (MK_VERSION): bump version to 20100102
	* own.mk: ensure PRINTOBJDIR works
	* autoconf.mk: pass on CONFIGURE_ARGS
	* init.mk: handle COPTS.${.IMPSRC:T} etc.
	* lib.mk: allow sys.mk to control SHLIB_FULLVERSION
	  fix handling of symlinks for darwin
	* libnames.mk: add DSHLIBEXT for libs which only exist as shared.
	* man.mk: suppress chown when not root.
	* rst2htm.mk: allow srcs from multiple locations.
	* sys.mk: M_whence, stop after 1st line of output.
	* sys/Darwin.mk: Use .dylib for DSHLIBEXT and HOST_LIBEXT
	* sys/SunOS.mk: we need to export PATH

2009-12-23  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version
	  include rst2htm.mk

2009-12-17  Simon J. Gerraty  <sjg@void.crufty.net>

	* sys.mk,libnames.mk add .-include <local.*>
	  this allows local customization without the need to edit the
	  distributed files. 

2009-12-14  Simon J. Gerraty  <sjg@void.crufty.net>

	* dpadd.mk (__dpadd_libdirs): order -L's to avoid picking up
	  older versions already installed.

2009-12-13  Simon J. Gerraty  <sjg@void.crufty.net>

	* stage.mk (.stage-install): generalize lib.mk's .libinstall
	* rules.mk rules for generic Makefile.
	* inc.mk install for includes.

2009-12-11  Simon J. Gerraty  <sjg@void.crufty.net>

	* sys/NetBSD.mk (MAKE_VERSION): some of our *.mk want to check
	  this, so provide it if using native make.

2009-12-10  Simon J. Gerraty  <sjg@void.crufty.net>

	* FILES: move all the platform *.sys.mk files to sys/*.mk
	* Rename Generic.sys.mk to sys.mk - we always want it.

2009-11-17  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version
	* host-target.mk: only export the expensive stuff 
	* Generic.sys.mk (sys_mk): for SunOS we need to look for
	  ${HOST_OS}.${HOST_OSMAJOR} too!

2009-11-07  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version
	* lib.mk: if sys.mk doesn't give us an lorder, don't use it.
	  based on patch from Greg Olszewski.
	* Generic.sys.mk: if we have nothing to work with
	set LORDER etc only if we can find it.

2009-09-08  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version
	* man.mk: cleanman: remove CLEANMAN if defined.

2009-09-04  Simon J. Gerraty  <sjg@void.crufty.net>

	* SunOS.5.sys.mk (CC): Use ?= like the other *sys.mk

2009-07-17  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version
	include auto.obj.mk


2009-03-26  Simon J. Gerraty  <sjg@void.crufty.net>

	* prog.mk,lib.mk: ensure test of USE_DPADD_MK doesn't fail.

2008-11-11  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version
	man.mk: ensure we generate *.cat1 etc in .

2008-07-16  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version
	add prlist.mk

2007-11-25  Simon J. Gerraty  <sjg@void.crufty.net>

	* Generic.sys.mk: Allow os specific sys.mk to be in a
	subdir of ${.PARSEDIR}

2007-11-22  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version
	* general cleanup
	* dpadd.mk introduce DPMAGIC_LIBS_* 

2007-04-30  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version

	* libs.mk, progs.mk, autodep.mk: allow for per lib/prog
	depend files and ensure clean is called for each lib/prog.

2007-03-27  Simon J. Gerraty  <sjg@void.crufty.net>

	* autodep.mk (.depend): delete lines that do not start with
	space and do not contain ':'

2007-02-16  Simon J. Gerraty  <sjg@void.crufty.net>

	* autodep.mk (.depend): gcc may wrap lines if pathnames are long
	so make sure the transform for .OPTIONAL copes.

2007-02-03  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version

	* own.mk: make sure RM and LN are defined.

	* obj.mk: fix a typo, and objlink target.

2006-12-30  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version
	* added libs.mk - analogous to progs.mk
	  make both of them always inlcude {lib,prog}.mk

2006-12-28  Simon J. Gerraty  <sjg@void.crufty.net>

	* progs.mk: add a means of building multiple apps in one dir.

2006-11-26  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version to 20061126

	* warnings.mk: detect invalid WARNINGS_SET
	
	* warnings.mk: use ${.TARGET:T:R}.o when looking for target
	specific warnings. 
	
	* For .cc sources, turn off warnings that g++ vomits on.

2006-11-08  Simon J. Gerraty  <sjg@void.crufty.net>

	* own.mk: if __initialized__ target doesn't exist and we are
	FreeBSD we got here directly from sys.mk

2006-11-06  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version to 20061106
	add scripts.mk

2006-03-18  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version to 20060318

	* autodep.mk: avoid := when modifying OBJS into __dependsrcs

2006-03-02  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version to 20060302
	* autodep.mk: use -MF et al to help gcc+ccache DTRT.

2006-03-01  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version to 20060301
	* autodep.mk (.depend): 
	if MAKE_VERSION is newer than  20050530 we can make .END depend on
	.depend and make .depend depend on __depsrcs that exist.
	* dpadd.mk: add SRC_PATHADD
	
2005-11-04  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version to 20051104
	* prog.mk: remove all the LIBC?= junk, use
	.-include libnames.mk instead (none by default).
	also if USE_DPADD_MK is set, include that.

2005-10-09  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version to 20051001
	Add UnixWare.sys.mk from Klaus Heinz.

2005-04-05  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk: always install *.sys.mk and if need be symlink one
	to sys.mk

2005-03-22  Simon J. Gerraty  <sjg@void.crufty.net>

	* subdir.mk, own.mk: use .MAKE rather than MAKE

2004-02-15  Simon J. Gerraty  <sjg@void.crufty.net>

	* own.mk: don't use NetBSD's _SRC_TOP_ it can
	cause confusion.  Also don't take just 'mk' as a 
	srctop indicator.

2004-02-14  Simon J. Gerraty  <sjg@void.crufty.net>

	* warnings.mk: overhauled, now very powerful.

2004-02-03  Simon J. Gerraty  <sjg@void.crufty.net>

	* Generic.sys.mk: need to use ${.PARSEDIR} with exists().

2004-02-01  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): bump version to 20040201
	* extract HOST_TARGET stuff to host-target.mk so own.mk and
	Generic.sys.mk can share.
	* fix typo in autodep.mk _SUBDIRUSE not _SUBDIR.

2003-09-30  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): 20030930
	* rename generic.sys.mk to Generic.sys.mk
	so that it does not get installed (unless being used as sys.mk)
	* set OS and ROOT_GROUP for those that we know the value.
	for others (eg. Generic.sys.mk) wrap the != in an .ifndef so
	we don't do it again for each sub-make.
	
2003-09-28  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk (MK_VERSION): 20030928
	Add some extra *.sys.mk from bootstrap-pkgsrc
	some of these likely still need work.
	Make everything default to root:wheel ownership,
	sys.mk can set ROOT_GROUP accordingly.

2003-08-07  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk: if FORCE_BSD_MK={cp,ln} use the ones in SYS_MK_DIR
	not the portable ones.

2003-07-31  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk: add ability to use cp -f when updating 
	destination .mk files.  Also now possible to play games with 
	FORCE_SYS_MK=ln etc on *BSD machines to link /usr/share/mk/sys.mk
	into dest - not recommended unless you seriously want to.

2003-07-28  Simon J. Gerraty  <sjg@void.crufty.net>

	* own.mk (IMPFLAGS): add support for COPTS.${IMPSRC:T} etc
	for semi-compatability with NetBSD.

2003-07-23  Simon J. Gerraty  <sjg@void.crufty.net>

	* install-mk: add a version indicator

2003-07-22  Simon J. Gerraty  <sjg@void.crufty.net>

	* prog.mk: don't try and use ${LIBCRT0} if its /dev/null

	* install-mk: Allow FORCE_SYS_MK to come from env


	
