Merge bmake-20130123

Approved by:	marcel (mentor)

1 files changed, 414 insertions, 0 deletions

diff --git a/contrib/bmake/mk/dirdeps.mk b/contrib/bmake/mk/dirdeps.mk
new file mode 100644
index 0000000..9f051e9
--- /dev/null
+++ b/contrib/bmake/mk/dirdeps.mk
@@ -0,0 +1,414 @@
+# $Id: dirdeps.mk,v 1.23 2012/11/06 05:44:03 sjg Exp $
+
+# Copyright (c) 2010-2012, Juniper Networks, Inc.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions 
+# are met: 
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer. 
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.  
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+
+# Much of the complexity here is for supporting cross-building.
+# If a tree does not support that, simply using plain Makefile.depend
+# should provide sufficient clue.
+# Otherwise the recommendation is to use Makefile.depend.${MACHINE}
+# as expected below.
+
+# Note: this file gets multiply included.
+# This is what we do with DIRDEPS
+
+# DIRDEPS:
+#	This is a list of directories - relative to SRCTOP, it is only
+#	of interest to .MAKE.LEVEL 0.
+#	In some cases the entry may be qualified with a .<machine>
+#	suffix, for example to force building something for the pseudo
+#	machines "host" or "common" regardless of current ${MACHINE}.
+#	All unqualified entries end up being qualified with .${MACHINE}
+#	and _DIRDEPS_USE below, uses the suffix to set MACHINE
+#	correctly when visiting each entry.
+#
+#	Each entry is also converted into a set of paths to look for
+#	Makefile.depend.<machine> to learn the dependencies of each.
+#	Each Makefile.depend.<machine> sets DEP_RELDIR to be the
+#	the RELDIR (path relative to SRCTOP) for its directory, and
+#	DEP_MACHINE to its suffix (<machine>), further since
+#	each Makefile.depend.<machine> includes dirdeps.mk, this
+#	processing is recursive and results in .MAKE.LEVEL 0 learning the
+#	dependencies of the tree wrt the initial directory (_DEP_RELDIR).
+#
+# BUILD_AT_LEVEL0
+#	Indicates whether .MAKE.LEVEL 0 builds anything:
+#	if "no" sub-makes are used to build everything,
+#	if "yes" sub-makes are only used to build for other machines.
+#
+# TARGET_SPEC_VARS
+#	All the description above (and below) assumes <machine> is the
+#	only data needed to control the build.
+#	This is not always the case.  So in addition to setting
+#	MACHINE in the build environment we set TARGET_SPEC which is
+#	composed of the values of TARGET_SPEC_VARS separated by
+#	commas.  The default is just MACHINE.
+#
+#	If more that MACHINE is needed then sys.mk needs to decompose
+#	TARGET_SPEC and set the relevant variables accordingly.
+#	It is important that MACHINE be included in TARGET_SPEC_VARS
+#	since if there is more the value passed as MACHINE will infact
+#	be the TARGET_SPEC.
+#	Note: TARGET_SPEC cannot contain any '.'s so the target
+#	tripple used by compiler folk won't work (directly anyway).
+#
+#	For example:
+#
+#		# variables other than MACHINE might be optional
+#		TARGET_SPEC_VARS = MACHINE TARGET_OS
+#		.if ${TARGET_SPEC:Uno:M*,*} != ""
+#		_tspec := ${TARGET_SPEC:S/,/ /g}
+#		MACHINE := ${_tspec:[1]}
+#		TARGET_OS := ${_tspec:[2]}
+#		# etc.
+#		.for v in ${TARGET_SPEC_VARS:O:u}
+#		.if empty($v)
+#		.undef $v
+#		.endif
+#		.endfor
+#		.endif
+#	
+
+.if ${.MAKE.LEVEL} == 0
+# only the first instance is interested in all this
+
+# First off, we want to know what ${MACHINE} to build for.
+# This can be complicated if we are using a mixture of ${MACHINE} specific
+# and non-specific Makefile.depend*
+
+.if !target(_DIRDEP_USE)
+# do some setup we only need once
+_CURDIR ?= ${.CURDIR}
+
+# If TARGET_SPEC_VARS is other than just MACHINE
+# it should be set by sys.mk or similar by now.
+# TARGET_SPEC must not contain any '.'s.
+TARGET_SPEC_VARS ?= MACHINE
+TARGET_SPEC = ${TARGET_SPEC_VARS:@v@${$v:U}@:ts,}
+
+.if !defined(.MAKE.DEPENDFILE_PREFERENCE)
+# this makes the logic below neater?
+.MAKE.DEPENDFILE_PREFERENCE = ${_CURDIR}/${.MAKE.DEPENDFILE:T}
+.if ${.MAKE.DEPENDFILE:E} == "${TARGET_SPEC}"
+.if ${TARGET_SPEC} != ${MACHINE}
+.MAKE.DEPENDFILE_PREFERENCE += ${_CURDIR}/${.MAKE.DEPENDFILE:T:R}.$${MACHINE}
+.endif
+.MAKE.DEPENDFILE_PREFERENCE += ${_CURDIR}/${.MAKE.DEPENDFILE:T:R}
+.endif
+.endif
+
+_default_dependfile := ${.MAKE.DEPENDFILE_PREFERENCE:[1]:T}
+_machine_dependfiles := ${.MAKE.DEPENDFILE_PREFERENCE:M*.${TARGET_SPEC}} \
+	${.MAKE.DEPENDFILE_PREFERENCE:M*.${MACHINE}}
+
+# for machine specific dependfiles we require ${MACHINE} to be at the end
+# also for the sake of sanity we require a common prefix
+.if !defined(.MAKE.DEPENDFILE_PREFIX)
+.if !empty(_machine_dependfiles)
+.MAKE.DEPENDFILE_PREFIX := ${_machine_dependfiles:[1]:T:R}
+.else
+.MAKE.DEPENDFILE_PREFIX := ${_default_dependfile:T}
+.endif
+.endif
+
+
+# this is how we identify non-machine specific dependfiles
+N_notmachine := ${.MAKE.DEPENDFILE_PREFERENCE:E:N${TARGET_SPEC}:N${MACHINE}:${M_ListToSkip}}
+
+.endif				# !target(_DIRDEP_USE)
+
+_last_dependfile := ${.MAKE.MAKEFILES:M*/${.MAKE.DEPENDFILE_PREFIX}*:[-1]}
+
+# Note: if a makefile is read many times, the above
+# will not work, so we also test for DEP_MACHINE==depend below.
+.if empty(_last_dependfile)
+# we haven't included one yet
+DEP_MACHINE ?= ${TARGET_MACHINE:U${TARGET_SPEC}}
+# else it should be correctly set by ${.MAKE.DEPENDFILE}
+.elif ${_last_dependfile:E:${N_notmachine}} == "" || ${DEP_MACHINE:Uno:${N_notmachine}} == ""
+# don't rely on manually maintained files to be correct
+DEP_MACHINE := ${_DEP_MACHINE:U${TARGET_SPEC}}
+.else
+# just in case
+DEP_MACHINE ?= ${_last_dependfile:E}
+.endif
+
+# pickup customizations
+# as below you can use !target(_DIRDEP_USE) to protect things
+# which should only be done once.
+.-include "local.dirdeps.mk"
+
+# the first time we are included the _DIRDEP_USE target will not be defined
+# we can use this as a clue to do initialization and other one time things.
+.if !target(_DIRDEP_USE)
+# make sure this target exists
+dirdeps:
+
+# We normally expect to be included by Makefile.depend.*
+# which sets the DEP_* macros below.
+DEP_RELDIR ?= ${RELDIR}
+
+# this can cause lots of output!
+# set to a set of glob expressions that might match RELDIR
+DEBUG_DIRDEPS ?= no
+
+# remember the initial value of DEP_RELDIR - we test for it below.
+_DEP_RELDIR := ${DEP_RELDIR}
+
+# things we skip for host tools
+SKIP_HOSTDIR ?=
+
+NSkipHostDir = ${SKIP_HOSTDIR:N*.host:S,$,.host,:N.host:${M_ListToSkip}}
+NSkipHostDep = ${SKIP_HOSTDIR:R:@d@*/$d*.host@:${M_ListToSkip}}
+
+# things we always skip
+# SKIP_DIRDEPS allows for adding entries on command line.
+SKIP_DIR += .host *.WAIT ${SKIP_DIRDEPS}
+
+.ifdef HOSTPROG
+SKIP_DIR += ${SKIP_HOSTDIR}
+.endif
+
+NSkipDir = ${SKIP_DIR:${M_ListToSkip}}
+
+.if defined(NO_DIRDEPS) || defined(NODIRDEPS)
+# confine ourselves to the original dir
+DIRDEPS_FILTER += M${_DEP_RELDIR}*
+.endif
+
+# we supress SUBDIR when visiting the leaves
+# we assume sys.mk will set MACHINE_ARCH
+_DIRDEP_USE:	.USE .MAKE
+	@for m in ${.MAKE.MAKEFILE_PREFERENCE}; do \
+		test -s ${.TARGET:R}/$$m || continue; \
+		echo "${TRACER}Checking ${.TARGET:R} for ${.TARGET:E} ..."; \
+		TARGET_SPEC=${.TARGET:E} \
+		MACHINE=${.TARGET:E} MACHINE_ARCH= NO_SUBDIR=1 \
+		${.MAKE} -C ${.TARGET:R} || exit 1; \
+		break; \
+	done
+
+.ifdef ALL_MACHINES
+# this is how you limit it to only the machines we have been built for
+# previously.
+.if empty(ONLY_MACHINE_LIST)
+.if !empty(ALL_MACHINE_LIST)
+# ALL_MACHINE_LIST is the list of all legal machines - ignore anything else
+_machine_list != cd ${_CURDIR} && 'ls' -1 ${ALL_MACHINE_LIST:O:u:@m@${.MAKE.DEPENDFILE:T:R}.$m@} 2> /dev/null; echo
+.else
+_machine_list != 'ls' -1 ${_CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.* 2> /dev/null; echo
+.endif
+_only_machines := ${_machine_list:${NIgnoreFiles:UN*.bak}:E:O:u}
+.else
+_only_machines := ${ONLY_MACHINE_LIST}
+.endif
+
+.if empty(_only_machines)
+# we must be boot-strapping
+_only_machines := ${TARGET_MACHINE:U${ALL_MACHINE_LIST:U${DEP_MACHINE}}}
+.endif
+
+.else				# ! ALL_MACHINES
+# if ONLY_MACHINE_LIST is set, we are limited to that
+# if TARGET_MACHINE is set - it is really the same as ONLY_MACHINE_LIST
+# otherwise DEP_MACHINE is it - so DEP_MACHINE will match.
+_only_machines := ${ONLY_MACHINE_LIST:U${TARGET_MACHINE:U${DEP_MACHINE}}:M${DEP_MACHINE}}
+.endif
+
+.if !empty(NOT_MACHINE_LIST)
+_only_machines := ${_only_machines:${NOT_MACHINE_LIST:${M_ListToSkip}}}
+.endif
+
+# make sure we have a starting place?
+DIRDEPS ?= ${RELDIR}
+.endif				# target 
+
+_debug_reldir := ${DEBUG_DIRDEPS:@x@${DEP_RELDIR:M$x}${${DEP_RELDIR}.${DEP_MACHINE}:L:M$x}@}
+_debug_search := ${DEBUG_DIRDEPS:@x@${DEP_RELDIR:M$x}${${DEP_RELDIR}.depend:L:M$x}@}
+
+# the rest is done repeatedly for every Makefile.depend we read.
+# if we are anything but the original dir we care only about the
+# machine type we were included for..
+
+.if ${DEP_RELDIR} == "."
+_this_dir := ${SRCTOP}
+.else
+_this_dir := ${SRCTOP}/${DEP_RELDIR}
+.endif
+
+# on rare occasions, there can be a need for extra help
+_dep_hack := ${_this_dir}/${.MAKE.DEPENDFILE_PREFIX}.inc
+.-include "${_dep_hack}"
+
+.if ${DEP_RELDIR} != ${_DEP_RELDIR} || ${DEP_MACHINE} != ${TARGET_SPEC}
+# this should be all
+_machines := ${DEP_MACHINE}
+.else
+# this is the machine list we actually use below
+_machines := ${_only_machines}
+
+.if defined(HOSTPROG) || ${DEP_MACHINE} == "host"
+# we need to build this guy's dependencies for host as well.
+_machines += host
+.endif
+
+_machines := ${_machines:O:u}
+.endif
+
+# reset these each time through
+_build_dirs =
+_depdir_files =
+
+.if ${DEP_RELDIR} == ${_DEP_RELDIR}
+# pickup other machines for this dir if necessary
+.if ${BUILD_AT_LEVEL0:Uyes} == "no"
+_build_dirs += ${_machines:@m@${_CURDIR}.$m@}
+.else
+_build_dirs += ${_machines:N${DEP_MACHINE}:@m@${_CURDIR}.$m@}
+.if ${DEP_MACHINE} == ${TARGET_SPEC}
+# pickup local dependencies now
+.-include <.depend>
+.endif
+.endif
+.endif
+
+.if !empty(_debug_reldir)
+.info ${DEP_RELDIR}.${DEP_MACHINE}: _last_dependfile='${_last_dependfile}'
+.info ${DEP_RELDIR}.${DEP_MACHINE}: DIRDEPS='${DIRDEPS}'
+.info ${DEP_RELDIR}.${DEP_MACHINE}: _machines='${_machines}' 
+.endif
+
+.if !empty(DIRDEPS)
+
+# this is what we start with
+__depdirs := ${DIRDEPS:${NSkipDir}:${DIRDEPS_FILTER:ts:}:O:u:@d@${SRCTOP}/$d@}
+
+# some entries may be qualified with .<machine> 
+# the :M*/*/*.* just tries to limit the dirs we check to likely ones.
+# the ${d:E:M*/*} ensures we don't consider junos/usr.sbin/mgd
+__qual_depdirs := ${__depdirs:M*/*/*.*:@d@${exists($d):?:${"${d:E:M*/*}":?:${exists(${d:R}):?$d:}}}@}
+__unqual_depdirs := ${__depdirs:${__qual_depdirs:Uno:${M_ListToSkip}}}
+
+.if ${DEP_RELDIR} == ${_DEP_RELDIR}
+# if it was called out - we likely need it.
+__hostdpadd := ${DPADD:U.:M${HOST_OBJTOP}/*:S,${HOST_OBJTOP}/,,:H:${NSkipDir}:${DIRDEPS_FILTER:ts:}:S,$,.host,:N.*:@d@${SRCTOP}/$d@}
+__qual_depdirs += ${__hostdpadd}
+.endif
+
+.if !empty(_debug_reldir)
+.info depdirs=${__depdirs}
+.info qualified=${__qual_depdirs}
+.info unqualified=${__unqual_depdirs}
+.endif
+
+# _build_dirs is what we will feed to _DIRDEP_USE
+_build_dirs += \
+	${__qual_depdirs:M*.host:${NSkipHostDir}:N.host} \
+	${__qual_depdirs:N*.host} \
+	${_machines:@m@${__unqual_depdirs:@d@$d.$m@}@}
+
+_build_dirs := ${_build_dirs:O:u}
+
+# this is where we will pick up more dependencies from
+# the inner inline loops look complex, but save a significant
+# amount of memory compared to a .for loop.
+_depdir_files =
+.for d in ${_build_dirs}
+.if exists($d)
+# easy, we're building for ${MACHINE}
+_depdir_files += ${.MAKE.DEPENDFILE_PREFERENCE:T:@m@${exists($d/$m):?$d/$m:}@:[1]}
+.elif exists(${d:R}) && ${d:R:T} == ${d:T:R}
+# a little more complex - building for another machine
+# we will ensure the file is qualified with a machine
+# so that if necessary _DEP_MACHINE can be set below
+_depdir_files += ${.MAKE.DEPENDFILE_PREFERENCE:T:S,.${TARGET_SPEC}$,.${d:E},:S,.${MACHINE}$,.${d:E},:@m@${exists(${d:R}/$m):?${d:R}/$m:}@:[1]:@m@${"${m:M*.${d:E}}":?$m:$m.${d:E}}@}
+.endif
+.endfor
+
+# clean up
+_depdir_files := ${_depdir_files:O:u}
+
+.endif				# empty DIRDEPS
+
+# Normally if doing make -V something,
+# we do not want to waste time chasing DIRDEPS
+# but if we want to count the number of Makefile.depend* read, we do.
+.if ${.MAKEFLAGS:M-V${_V_READ_DIRDEPS}} == ""
+.if !empty(_build_dirs)
+# this makes it all happen
+dirdeps: ${_build_dirs}
+${_build_dirs}:	_DIRDEP_USE
+
+.if !empty(_debug_reldir)
+.info ${DEP_RELDIR}.${DEP_MACHINE}: ${_build_dirs}
+.endif
+
+.for m in ${_machines}
+# it would be nice to do :N${.TARGET}
+.if !empty(__qual_depdirs)
+.for q in ${__qual_depdirs:E:O:u:N$m}
+.if !empty(_debug_reldir) || ${DEBUG_DIRDEPS:@x@${${DEP_RELDIR}.$m:L:M$x}${${DEP_RELDIR}.$q:L:M$x}@} != ""
+.info ${DEP_RELDIR}.$m: ${_build_dirs:M*.$q}
+.endif
+${_this_dir}.$m: ${_build_dirs:M*.$q}
+.endfor
+.endif
+.if !empty(_debug_reldir)
+.info ${DEP_RELDIR}.$m: ${_build_dirs:M*.$m:N${_this_dir}.$m}
+.endif
+${_this_dir}.$m: ${_build_dirs:M*.$m:N${_this_dir}.$m}
+.endfor
+
+.endif
+
+.for d in ${_depdir_files}
+.if ${.MAKE.MAKEFILES:M${d}} == ""
+.if !empty(_debug_search)
+.info Looking for $d
+.endif
+.if exists($d)
+.include <$d>
+.elif exists(${d:R})
+# an unqualified file exists, we qualified it above so we can set _DEP_MACHINE
+# it might be manually maintained and shared by all machine types
+# tell it the machine we are interested in.
+_DEP_MACHINE := ${d:E}
+.if !empty(_debug_reldir)
+.info loading ${d:R} for ${_DEP_MACHINE}
+.endif
+# pretend we read $d, so we don't come by here again.
+.MAKE.MAKEFILES += $d
+.include <${d:R}>
+.endif
+.endif
+.endfor
+.endif				# -V
+
+.elif ${.MAKE.LEVEL} > 42
+.error You should have stopped recursing by now.
+.else
+_DEP_RELDIR := ${DEP_RELDIR}
+# pickup local dependencies
+.-include <.depend>
+.endif
+