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