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f697b9d03d
Even at level 0 it is handy to default DEP_* used by Makefile.depend* to aid the first include if in a leaf dir. Reviewed by: stevek
206 lines
5.3 KiB
Makefile
206 lines
5.3 KiB
Makefile
# SPDX-License-Identifier: BSD-2-Clause
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#
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# $Id: sys.dirdeps.mk,v 1.15 2024/04/18 17:18:31 sjg Exp $
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#
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# @(#) Copyright (c) 2012-2023, Simon J. Gerraty
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#
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# This file is provided in the hope that it will
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# be of use. There is absolutely NO WARRANTY.
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# Permission to copy, redistribute or otherwise
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# use this file is hereby granted provided that
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# the above copyright notice and this notice are
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# left intact.
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#
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# Please send copies of changes and bug-fixes to:
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# sjg@crufty.net
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#
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# Originally DIRDEPS_BUILD and META_MODE were the same thing.
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# So, much of this was done in *meta.sys.mk and local*mk
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# but properly belongs here.
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# Include from [local.]sys.mk - if doing DIRDEPS_BUILD
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# we should not be here otherwise
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MK_DIRDEPS_BUILD ?= yes
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# these are all implied
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MK_AUTO_OBJ ?= yes
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MK_META_MODE ?= yes
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MK_STAGING ?= yes
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_PARSEDIR ?= ${.PARSEDIR:tA}
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.-include <local.sys.dirdeps.env.mk>
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.if ${.MAKE.LEVEL} == 0
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# make sure dirdeps target exists and do it first
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# init.mk will set .MAIN to 'dirdeps' if appropriate
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# as will dirdeps-targets.mk for top-level builds.
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# This allows a Makefile to have more control.
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dirdeps:
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.NOPATH: dirdeps
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all: dirdeps .WAIT
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.endif
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.if empty(SRCTOP)
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# fallback assumes share/mk!
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SRCTOP := ${SB_SRC:U${.PARSEDIR:tA:H:H}}
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.export SRCTOP
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.endif
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# fake SB if not using mk wrapper
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# SB documented at http://www.crufty.net/sjg/docs/sb-tools.htm
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.if !defined(SB)
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SB := ${SRCTOP:H}
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.export SB
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.endif
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.if empty(OBJROOT)
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OBJROOT := ${SB_OBJROOT:U${MAKEOBJDIRPREFIX:U${SB}/obj}/}
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.export OBJROOT
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.endif
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# we expect OBJROOT to end with / (- can work too)
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.if ${OBJROOT:M*[/-]} == ""
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OBJROOT := ${OBJROOT}/
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.endif
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.if empty(STAGE_ROOT)
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STAGE_ROOT ?= ${OBJROOT}stage
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.export STAGE_ROOT
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.endif
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# We should be included before meta.sys.mk
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# If TARGET_SPEC_VARS is other than just MACHINE
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# it should be set 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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.if ${TARGET_SPEC:Uno:M*,*} != ""
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# deal with TARGET_SPEC from env
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_tspec := ${TARGET_SPEC:S/,/ /g}
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.for i in ${TARGET_SPEC_VARS:${M_RANGE:Urange}}
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${TARGET_SPEC_VARS:[$i]} := ${_tspec:[$i]}
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.endfor
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# We need to stop that TARGET_SPEC affecting any submakes
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TARGET_SPEC=
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# so export but do not track
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.export-env TARGET_SPEC
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.export ${TARGET_SPEC_VARS}
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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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# Now make sure we know what TARGET_SPEC is
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# as we may need it to find Makefile.depend*
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.if ${MACHINE:Mhost*} != ""
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# host is special
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TARGET_SPEC = ${MACHINE}
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.else
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TARGET_SPEC = ${TARGET_SPEC_VARS:@v@${$v:U}@:ts,}
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.endif
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.if ${TARGET_SPEC_VARS:[#]} > 1
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TARGET_SPEC_VARSr := ${TARGET_SPEC_VARS:[-1..1]}
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# alternatives might be
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# TARGET_OBJ_SPEC = ${TARGET_SPEC_VARSr:@v@${$v:U}@:ts/}
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# TARGET_OBJ_SPEC = ${TARGET_SPEC_VARS:@v@${$v:U}@:ts/}
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TARGET_OBJ_SPEC ?= ${TARGET_SPEC_VARS:@v@${$v:U}@:ts.}
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.else
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TARGET_OBJ_SPEC ?= ${MACHINE}
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.endif
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MAKE_PRINT_VAR_ON_ERROR += ${TARGET_SPEC_VARS}
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.if !defined(MACHINE0)
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# it can be handy to know which MACHINE kicked off the build
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# for example, if using Makefild.depend for multiple machines,
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# allowing only MACHINE0 to update can keep things simple.
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MACHINE0 := ${MACHINE}
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.export MACHINE0
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.endif
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MACHINE_OBJ.host = ${HOST_TARGET}
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MACHINE_OBJ.host32 = ${HOST_TARGET32}
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MACHINE_OBJ.${MACHINE} ?= ${TARGET_OBJ_SPEC}
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MACHINE_OBJDIR = ${MACHINE_OBJ.${MACHINE}}
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# we likely want to override env for OBJTOP
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.if ${MACHINE} == "host"
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OBJTOP = ${HOST_OBJTOP}
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.elif ${MACHINE} == "host32"
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OBJTOP = ${HOST_OBJTOP32}
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.else
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OBJTOP = ${OBJROOT}${MACHINE_OBJDIR}
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.endif
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.if ${.MAKE.LEVEL} > 0
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# should not change from level 1 onwards
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# this only matters for cases like bmake/unit-tests
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# where we do ${MAKE} -r
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.export OBJTOP
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.endif
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.if ${MAKEOBJDIR:U:M*/*} == ""
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# we do not use MAKEOBJDIRPREFIX
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# though we may have used it above to initialize OBJROOT
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.undef MAKEOBJDIRPREFIX
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# this is what we expected in env
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MAKEOBJDIR = $${.CURDIR:S,^$${SRCTOP},$${OBJTOP},}
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# export that but do not track
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.export-env MAKEOBJDIR
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# this what we need here
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MAKEOBJDIR = ${.CURDIR:S,${SRCTOP},${OBJTOP},}
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.endif
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STAGE_MACHINE ?= ${MACHINE_OBJDIR}
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STAGE_OBJTOP ?= ${STAGE_ROOT}/${STAGE_MACHINE}
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STAGE_COMMON_OBJTOP ?= ${STAGE_ROOT}/common
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STAGE_HOST_OBJTOP ?= ${STAGE_ROOT}/${HOST_TARGET}
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STAGE_HOST_OBJTOP32 ?= ${STAGE_ROOT}/${HOST_TARGET32}
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STAGE_INCLUDEDIR ?= ${STAGE_OBJTOP}${INCLUDEDIR:U/usr/include}
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STAGE_LIBDIR ?= ${STAGE_OBJTOP}${LIBDIR:U/lib}
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TIME_STAMP_FMT ?= @ %s [%Y-%m-%d %T] ${:U}
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DATE_TIME_STAMP ?= `date '+${TIME_STAMP_FMT}'`
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TIME_STAMP ?= ${TIME_STAMP_FMT:localtime}
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.if ${MK_TIME_STAMPS:Uyes} == "yes"
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TRACER = ${TIME_STAMP}
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ECHO_DIR = echo ${TIME_STAMP}
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ECHO_TRACE = echo ${TIME_STAMP}
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.endif
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.if ${.CURDIR} == ${SRCTOP}
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RELDIR= .
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RELTOP= .
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.elif ${.CURDIR:M${SRCTOP}/*}
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RELDIR:= ${.CURDIR:S,${SRCTOP}/,,}
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.else
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RELDIR:= ${.OBJDIR:S,${OBJTOP}/,,}
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.endif
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RELTOP?= ${RELDIR:C,[^/]+,..,g}
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RELOBJTOP?= ${RELTOP}
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RELSRCTOP?= ${RELTOP}
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# this does all the smarts of setting .MAKE.DEPENDFILE
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.-include <sys.dependfile.mk>
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.-include <local.sys.dirdeps.mk>
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# check if we got anything sane
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.if ${.MAKE.DEPENDFILE} == ".depend"
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.undef .MAKE.DEPENDFILE
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.endif
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# just in case
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.MAKE.DEPENDFILE ?= Makefile.depend
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# Makefile.depend* often refer to DEP_MACHINE etc,
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# we need defaults for both first include in a leaf dir
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# and when level > 0
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# so ensure DEP_* for TARGET_SPEC_VARS and RELDIR are set
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.for V in ${TARGET_SPEC_VARS} RELDIR
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DEP_$V ?= ${$V}
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.endfor
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