14 files changed, 240 insertions, 86 deletions
diff --git a/lib/libbsnmp/libbsnmp/Makefile b/lib/libbsnmp/libbsnmp/Makefile
index 94c72795a51c9..c0a6cf2da6436 100644
--- a/lib/libbsnmp/libbsnmp/Makefile
+++ b/lib/libbsnmp/libbsnmp/Makefile
@@ -24,12 +24,17 @@ SRCS+=	snmptc.h
 INCS=	asn1.h snmp.h snmpagent.h snmpclient.h
 MAN=	asn1.3 bsnmpagent.3 bsnmpclient.3 bsnmplib.3
 
+.if ${MK_DIRDEPS_BUILD} == "yes"
+GENSNMPTREE?= ${HOST_OBJTOP}/usr.sbin/bsnmpd/gensnmptree/gensnmptree
+.endif
+GENSNMPTREE?= gensnmptree
+
 snmptc.h : tc.def
 	(\
 	echo "/* autogenerated from tc.def */";\
 	echo "#ifndef snmptc_h_1529923773";\
 	echo "#define snmptc_h_1529923773";\
-	gensnmptree -E -f <${.ALLSRC};\
+	${GENSNMPTREE} -E -f <${.ALLSRC};\
 	echo "#endif" ; \
 	) >${.TARGET}
 
diff --git a/lib/libgcc_eh/Makefile b/lib/libgcc_eh/Makefile
index 9909e73c9375f..bf018e16c9e06 100644
--- a/lib/libgcc_eh/Makefile
+++ b/lib/libgcc_eh/Makefile
@@ -10,4 +10,10 @@ WARNS?=	2
 
 .include "Makefile.inc"
 
+.if ${.MAKE.LEVEL} > 0
+# avoid circular dependencies
+GENDIRDEPS_FILTER+= Nlib/msun
+CFLAGS+= -I${SRCTOP}/lib/msun/src
+.endif
+
 .include <bsd.lib.mk>
diff --git a/lib/libmagic/Makefile b/lib/libmagic/Makefile
index b9a0e86767685..522574f28e790 100644
--- a/lib/libmagic/Makefile
+++ b/lib/libmagic/Makefile
@@ -40,6 +40,7 @@ magic: ${MAGFILES}
 magic.mgc: mkmagic magic
 	${BTOOLSPATH:U.}/mkmagic magic
 
+.if ${MACHINE} == "host" || ${MK_DIRDEPS_BUILD} == "no"
 CLEANFILES+=	mkmagic
 DEPENDOBJS+=	mkmagic
 build-tools: mkmagic
@@ -47,6 +48,11 @@ mkmagic: apprentice.c cdf_time.c encoding.c funcs.c magic.c print.c ${INCS} ${BU
 	${CC:N${CCACHE_BIN}} ${CFLAGS} -DCOMPILE_ONLY ${LDFLAGS} -o ${.TARGET} \
 	    ${.ALLSRC:N*.h:O:u} ${LDADD}
 
+.endif
+.if ${MK_DIRDEPS_BUILD} == "yes"
+BTOOLSPATH= ${HOST_OBJTOP}/${RELDIR}
+.endif
+
 FILEVER!= awk '$$1 == "\#define" && $$2 == "VERSION" { print $$3; exit }' \
 			${.CURDIR}/config.h
 CLEANFILES+=	${MAN}
diff --git a/lib/libpmc/Makefile b/lib/libpmc/Makefile
index 47f82a6f7cc9b..cb3ea17c38318 100644
--- a/lib/libpmc/Makefile
+++ b/lib/libpmc/Makefile
@@ -17,12 +17,20 @@ EVENT_ARCH="x86"
 EVENT_ARCH="powerpc"
 .endif
 
+.if ${MK_DIRDEPS_BUILD} == "yes"
+# avoid circular dependency
+CFLAGS+= -I${RELDIR:H}/libpmcstat
+GENDIRDEPS_FILTER+= N${RELDIR:H}/libpmcstat
+JEVENTS?= ${HOST_OBJTOP}/${RELDIR}/pmu-events/jevents
+.else
 JEVENTS= ${BTOOLSPATH:U.}/pmu-events/jevents
+
 # This file is built in a subdirectory so never try to rebuild it here.
 ${JEVENTS}: .PHONY
 .if make(*clean*)
 SUBDIR+= pmu-events
 .endif
+.endif
 
 libpmc_events.c: ${JEVENTS}
 	${JEVENTS} ${EVENT_ARCH} ${.CURDIR}/pmu-events/arch libpmc_events.c
diff --git a/share/mk/dirdeps-targets.mk b/share/mk/dirdeps-targets.mk
new file mode 100644
index 0000000000000..179c38b53fff3
--- /dev/null
+++ b/share/mk/dirdeps-targets.mk
@@ -0,0 +1,134 @@
+# $FreeBSD$
+# RCSid:
+#       $Id: dirdeps-targets.mk,v 1.9 2019/10/06 20:07:50 sjg Exp $
+#
+#       @(#) Copyright (c) 2019 Simon J. Gerraty
+#
+#       This file is provided in the hope that it will
+#       be of use.  There is absolutely NO WARRANTY.
+#       Permission to copy, redistribute or otherwise
+#       use this file is hereby granted provided that 
+#       the above copyright notice and this notice are
+#       left intact. 
+#      
+#       Please send copies of changes and bug-fixes to:
+#       sjg@crufty.net
+#
+
+##
+# This makefile is used to set initial DIRDEPS for top-level build
+# targets.
+#
+# The basic idea is that we have a list of directories in
+# DIRDEPS_TARGETS_DIRS which are relative to SRCTOP.
+# When asked to make 'foo' we look for any directory named 'foo'
+# under DIRDEPS_TARGETS_DIRS.
+# We then search those dirs for any Makefile.depend*
+# Finally we select any that match conditions like REQUESTED_MACHINE
+# or TARGET_SPEC and initialize DIRDEPS accordingly.
+# 
+
+.if ${.MAKE.LEVEL} == 0
+# pickup customizations
+.-include <local.dirdeps-targets.mk>
+
+# for DIRDEPS_BUILD this is how we prime the pump
+DIRDEPS_TARGETS_DIRS ?= targets targets/pseudo
+# these prefixes can modify how we behave
+# they need to be stripped when looking for target dirs
+DIRDEPS_TARGETS_PREFIX_LIST ?= pkg- build-
+
+# matching target dirs if any
+tdirs := ${.TARGETS:Nall:${DIRDEPS_TARGETS_PREFIX_LIST:@p@S,^$p,,@:ts:}:@t@${DIRDEPS_TARGETS_DIRS:@d@$d/$t@}@:@d@${exists(${SRCTOP}/$d):?$d:}@}
+
+.if !empty(DEBUG_DIRDEPS_TARGETS)
+.info tdirs=${tdirs}
+.endif
+
+.if !empty(tdirs)
+# some things we know we want to ignore
+DIRDEPS_TARGETS_SKIP_LIST += \
+	*~ \
+	*.bak \
+	*.inc \
+	*.old \
+	*.options \
+	*.orig \
+	*.rej \
+
+# the list of MACHINEs we consider
+DIRDEPS_TARGETS_MACHINE_LIST += \
+	${ALL_MACHINE_LIST:U} \
+	${PSEUDO_MACHINE_LIST:Ucommon host host32} \
+	${TARGET_MACHINE_LIST}
+
+DIRDEPS_TARGETS_MACHINE_LIST := ${DIRDEPS_TARGETS_MACHINE_LIST:O:u}
+
+# raw Makefile.depend* list
+tdeps != 'cd' ${SRCTOP} && 'ls' -1 ${tdirs:O:u:@d@$d/${.MAKE.DEPENDFILE_PREFIX}*@} 2> /dev/null; echo
+.if ${DEBUG_DIRDEPS_TARGETS:U:Mdep*} != ""
+.info tdeps=${tdeps}
+.endif
+# remove things we know we don't want
+tdeps := ${tdeps:${DIRDEPS_TARGETS_SKIP_LIST:${M_ListToSkip}}}
+.if ${DEBUG_DIRDEPS_TARGETS:U:Mdep*} != ""
+.info tdeps=${tdeps}
+.endif
+
+# plain entries (no qualifiers) these apply to any TARGET_SPEC
+ptdeps := ${tdeps:M*${.MAKE.DEPENDFILE_PREFIX}:S,/${.MAKE.DEPENDFILE_PREFIX},,}
+
+# MACHINE qualified entries
+mqtdeps := ${DIRDEPS_TARGETS_MACHINE_LIST:@m@${tdeps:M*.$m}@:S,/${.MAKE.DEPENDFILE_PREFIX},,}
+
+tqtdeps =
+.if ${TARGET_SPEC_VARS:[#]} > 1
+# TARGET_SPEC qualified entries
+.if !empty(TARGET_SPEC_LIST)
+# we have a list of valid TARGET_SPECS; use it
+tqtdeps := ${TARGET_SPEC_LIST:U:O:u:@t@${tdeps:M*.$t}@:S,/${.MAKE.DEPENDFILE_PREFIX},,}
+.else
+# do we have a list of valid tuple members for at least
+# the last tupple element? if so match on that
+TARGET_SPEC_LAST_LIST ?= ${${TARGET_SPEC_VARS:[-1]}_LIST}
+.if !empty(TARGET_SPEC_LAST_LIST)
+tqtdeps := ${TARGET_SPEC_LAST_LIST:U:O:u:@t@${tdeps:M*,$t}@:S,/${.MAKE.DEPENDFILE_PREFIX},,}
+.else
+# this is sub-optimal match MACHINE,
+tqtdeps := ${DIRDEPS_TARGETS_MACHINE_LIST:@m@${tdeps:M*.$m,*}@:S,/${.MAKE.DEPENDFILE_PREFIX},,}
+.endif
+.endif
+.endif
+
+# now work out what we want in DIRDEPS
+.if empty(REQUESTED_MACHINE)
+# we want them all just as found
+DIRDEPS = ${ptdeps} ${mqtdeps} ${tqtdeps}
+.else
+# we only want those that match REQUESTED_MACHINE/REQUESTED_TARGET_SPEC
+# or REQUESTED_TARGET_SPEC (TARGET_SPEC)
+DIRDEPS = \
+	${ptdeps:@d@$d.${REQUESTED_TARGET_SPEC:U${TARGET_SPEC:U${REQUESTED_MACHINE}}}@} \
+	${mqtdeps:M*.${REQUESTED_MACHINE}} \
+	${tqtdeps:M*.${REQUESTED_TARGET_SPEC:U${TARGET_SPEC}}}
+.endif
+# clean up
+DIRDEPS := ${DIRDEPS:O:u}
+
+.if !empty(DEBUG_DIRDEPS_TARGETS)
+.for x in tdeps ptdeps mqtdeps tqtdeps DIRDEPS
+.info $x=${$x}
+.endfor
+.endif
+.endif
+# if we got DIRDEPS get to work
+.if !empty(DIRDEPS)
+.include <dirdeps.mk>
+
+DIRDEPS_TARGETS_SKIP += all clean* destroy*
+
+.for t in ${.TARGETS:${DIRDEPS_TARGETS_SKIP:${M_ListToSkip}}}
+$t: dirdeps
+.endfor                                                                         
+.endif
+.endif
diff --git a/share/mk/dirdeps.mk b/share/mk/dirdeps.mk
index 5cb936003fcb5..68ddd21556475 100644
--- a/share/mk/dirdeps.mk
+++ b/share/mk/dirdeps.mk
@@ -1,5 +1,5 @@
 # $FreeBSD$
-# $Id: dirdeps.mk,v 1.96 2018/06/20 22:26:39 sjg Exp $
+# $Id: dirdeps.mk,v 1.100 2019/11/12 06:47:58 sjg Exp $
 
 # Copyright (c) 2010-2013, Juniper Networks, Inc.
 # All rights reserved.
@@ -379,7 +379,8 @@ DIRDEPS_FILTER += M${_DEP_RELDIR}
 .endif
 
 # this is what we run below
-DIRDEP_MAKE?= ${.MAKE}
+DIRDEP_MAKE ?= ${.MAKE}
+DIRDEP_DIR ?= ${.TARGET:R}
 
 # we suppress SUBDIR when visiting the leaves
 # we assume sys.mk will set MACHINE_ARCH
@@ -389,10 +390,11 @@ _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} ..."; \
+		${DIRDEP_USE_PRELUDE} \
 		MACHINE_ARCH= NO_SUBDIR=1 ${DIRDEP_USE_ENV} \
 		TARGET_SPEC=${.TARGET:E} \
 		MACHINE=${.TARGET:E} \
-		${DIRDEP_MAKE} -C ${.TARGET:R} || exit 1; \
+		${DIRDEP_MAKE} -C ${DIRDEP_DIR} || exit 1; \
 		break; \
 	done
 
@@ -476,7 +478,7 @@ BUILD_DIRDEPS_TARGETS ?= ${.TARGETS}
 ${DIRDEPS_CACHE}:	.META .NOMETA_CMP
 	+@{ echo '# Autogenerated - do NOT edit!'; echo; \
 	echo 'BUILD_DIRDEPS=no'; echo; \
-	echo '.include <dirdeps.mk>'; \
+	echo '.include <dirdeps.mk>'; echo; \
 	} > ${.TARGET}.new
 	+@MAKELEVEL=${.MAKE.LEVEL} DIRDEPS_CACHE=${DIRDEPS_CACHE} \
 	DIRDEPS="${DIRDEPS}" \
@@ -640,9 +642,15 @@ _build_all_dirs := ${_build_all_dirs:O:u}
 .if ${.MAKEFLAGS:M-V${_V_READ_DIRDEPS}} == ""
 .if !empty(_build_all_dirs)
 .if ${BUILD_DIRDEPS_CACHE} == "yes"
-x!= { echo; echo '\# ${DEP_RELDIR}.${DEP_TARGET_SPEC}'; \
-	echo 'dirdeps: ${_build_all_dirs:${M_oneperline}}'; echo; } >&3; echo
-x!= { ${_build_all_dirs:@x@${target($x):?:echo '$x: _DIRDEP_USE';}@} echo; } >&3; echo
+# guard against _build_all_dirs being too big for a single command line
+# first get list of dirs that need _DIRDEP_USE
+# then export that and _build_all_dirs
+_new_dirdeps := ${_build_all_dirs:@x@${target($x):?:$x}@}
+.export _new_dirdeps _build_all_dirs
+x!= echo; { echo '\# ${DEP_RELDIR}.${DEP_TARGET_SPEC}'; \
+	echo "dirdeps: \\"; \
+	for x in $$_build_all_dirs; do echo "	$$x \\"; done; echo; \
+	for x in $$_new_dirdeps; do echo "$$x: _DIRDEP_USE"; done; echo; } >&3
 .if !empty(DEP_EXPORT_VARS)
 # Discouraged, but there are always exceptions.
 # Handle it here rather than explain how.
@@ -672,7 +680,10 @@ DEP_EXPORT_VARS=
 .info ${DEP_RELDIR}.$m: graph: ${_build_dirs:M*.$q}
 .endif
 .if ${BUILD_DIRDEPS_CACHE} == "yes"
-x!= { echo; echo '${_this_dir}.$m: ${_build_dirs:M*.$q:${M_oneperline}}'; echo; } >&3; echo
+_cache_deps := ${_build_dirs:M*.$q}
+.export _cache_deps
+x!= echo; { echo "${_this_dir}.$m: \\"; \
+	for x in $$_cache_deps; do echo "	$$x \\"; done; echo; } >&3
 .else
 ${_this_dir}.$m: ${_build_dirs:M*.$q}
 .endif
@@ -682,7 +693,10 @@ ${_this_dir}.$m: ${_build_dirs:M*.$q}
 .info ${DEP_RELDIR}.$m: graph: ${_build_dirs:M*.$m:N${_this_dir}.$m}
 .endif
 .if ${BUILD_DIRDEPS_CACHE} == "yes"
-x!= { echo; echo '${_this_dir}.$m: ${_build_dirs:M*.$m:N${_this_dir}.$m:${M_oneperline}}'; echo; } >&3; echo
+_cache_deps := ${_build_dirs:M*.$m:N${_this_dir}.$m}
+.export _cache_deps
+x!= echo; { echo "${_this_dir}.$m: \\"; \
+	for x in $$_cache_deps; do echo "       $$x \\"; done; echo; } >&3
 .else
 ${_this_dir}.$m: ${_build_dirs:M*.$m:N${_this_dir}.$m}
 .endif
diff --git a/share/mk/gendirdeps.mk b/share/mk/gendirdeps.mk
index ee7898a29a176..96681fc7d9d34 100644
--- a/share/mk/gendirdeps.mk
+++ b/share/mk/gendirdeps.mk
@@ -1,5 +1,5 @@
 # $FreeBSD$
-# $Id: gendirdeps.mk,v 1.39 2018/06/08 01:25:31 sjg Exp $
+# $Id: gendirdeps.mk,v 1.41 2019/11/21 23:50:40 sjg Exp $
 
 # Copyright (c) 2010-2013, Juniper Networks, Inc.
 # All rights reserved.
@@ -80,7 +80,6 @@ _DIRDEPS := ${DIRDEPS:U:O:u}
 .endif
 
 META_FILES := ${META_FILES:T:O:u}
-.export META_FILES
 
 # pickup customizations
 .-include <local.gendirdeps.mk>
@@ -184,6 +183,11 @@ x != cd ${_OBJDIR} && find . -name '*.meta' -print -o \( -type d ! -name . -prun
 .elif ${_meta_files:[#]} > 500
 .export _meta_files
 x != echo; for m in $$_meta_files; do echo $$m; done > meta.list
+# _meta_files is consuming a lot of env space
+# that can impact command line length,
+# and we do not need it any more
+.undef _meta_files
+.unexport _meta_files
 .else
 _meta_files_arg:= ${_meta_files}
 .endif
@@ -374,3 +378,6 @@ all ${_DEPENDFILE}:
 
 .endif
 ${_DEPENDFILE}: .PRECIOUS
+
+# don't waste time looking for ways to make .meta files
+.SUFFIXES:
diff --git a/share/mk/local.dirdeps-options.mk b/share/mk/local.dirdeps-options.mk
new file mode 100644
index 0000000000000..67b30f351f9f6
--- /dev/null
+++ b/share/mk/local.dirdeps-options.mk
@@ -0,0 +1,29 @@
+# $FreeBSD$
+
+# avoid duplication
+DIRDEPS.AUDIT.yes= lib/libbsm
+DIRDEPS.BLACKLIST_SUPPORT.yes+= lib/libblacklist
+DIRDEPS.BSD_CRTBEGIN.no+= gnu/lib/csu
+DIRDEPS.CASPER.yes+= lib/libcasper/libcasper
+DIRDEPS.GSSAPI.yes+= lib/libgssapi
+DIRDEPS.JAIL.yes+= lib/libjail
+DIRDEPS.KERBEROS_SUPPORT.yes+= \
+	kerberos5/lib/libasn1 \
+	kerberos5/lib/libheimbase \
+	kerberos5/lib/libheimipcc \
+	kerberos5/lib/libhx509 \
+	kerberos5/lib/libkrb5 \
+	kerberos5/lib/libroken \
+	kerberos5/lib/libwind \
+
+DIRDEPS.NIS.yes+= \
+	include/rpc \
+	include/rpcsvc \
+	lib/librpcsvc
+
+DIRDEPS.OPENSSL.yes+= secure/lib/libcrypto
+DIRDEPS.OPENSSL.no+= lib/libmd
+DIRDEPS.PAM_SUPPORT.yes+= lib/libpam/libpam
+DIRDEPS.TCP_WRAPPERS.yes+= lib/libwrap
+
+
diff --git a/share/mk/local.dirdeps.mk b/share/mk/local.dirdeps.mk
index 6fb2ca5ed4f06..cb01719c60459 100644
--- a/share/mk/local.dirdeps.mk
+++ b/share/mk/local.dirdeps.mk
@@ -148,7 +148,6 @@ _SRCS= ${SRCS} ${_PROGS_SRCS}
 
 # Has C files. The C_DIRDEPS are shared with C++ files as well.
 C_DIRDEPS= \
-	gnu/lib/csu \
 	include \
 	include/arpa \
 	include/protocols \
@@ -222,6 +221,11 @@ DIRDEPS += targets/pseudo/stage
 .endif
 .endif
 
+# this one is too pervasive
+.if ${MK_BSD_CRTBEGIN} == "no" && ${DEP_RELDIR} != "gnu/lib/csu"
+DIRDEPS+= gnu/lib/csu
+.endif
+
 DEP_MACHINE_ARCH = ${MACHINE_ARCH.${DEP_MACHINE}}
 CSU_DIR.${DEP_MACHINE_ARCH} ?= csu/${DEP_MACHINE_ARCH}
 CSU_DIR := ${CSU_DIR.${DEP_MACHINE_ARCH}}
diff --git a/share/mk/local.gendirdeps.mk b/share/mk/local.gendirdeps.mk
index 6ec79b56f92a0..71a7a3cbc00f7 100644
--- a/share/mk/local.gendirdeps.mk
+++ b/share/mk/local.gendirdeps.mk
@@ -10,6 +10,7 @@ GENDIRDEPS_FILTER+= \
 	Ngnu/lib/libssp/libssp_nonshared \
 	Ncddl/usr.bin/ctf* \
 	Nlib/libc_nonshared \
+	Ngnu/lib/csu \
 	Ngnu/lib/libgcc \
 	Nlib/libgcc_eh \
 	Nlib/libgcc_s \
diff --git a/share/mk/local.meta.sys.mk b/share/mk/local.meta.sys.mk
index 18734ba5bae9c..8286f43a4cc87 100644
--- a/share/mk/local.meta.sys.mk
+++ b/share/mk/local.meta.sys.mk
@@ -96,7 +96,7 @@ TARGET_MACHINE= host
 OBJTOP := ${HOST_OBJTOP}
 .endif
 
-.if ${.MAKE.LEVEL} == 0
+.if ${.MAKE.LEVEL} == 0 || empty(PYTHON)
 PYTHON ?= /usr/local/bin/python
 .export PYTHON
 # this works best if share/mk is ready for it.
@@ -133,7 +133,9 @@ STAGE_TARGET_OBJTOP:= ${STAGE_ROOT}/${TARGET_OBJ_SPEC}
 STAGE_HOST_OBJTOP:= ${STAGE_ROOT}/${HOST_TARGET}
 # These are exported for hooking in out-of-tree builds.  They will always
 # be overridden in sub-makes above when building in-tree.
+.if ${.MAKE.LEVEL} > 0
 .export STAGE_OBJTOP STAGE_TARGET_OBJTOP STAGE_HOST_OBJTOP
+.endif
 
 # Use tools/install.sh which can avoid the need for xinstall for simple cases.
 INSTALL?=	sh ${SRCTOP}/tools/install.sh
diff --git a/share/mk/meta.sys.mk b/share/mk/meta.sys.mk
index 597b7fbaa7f1c..8c39757e15af5 100644
--- a/share/mk/meta.sys.mk
+++ b/share/mk/meta.sys.mk
@@ -1,5 +1,5 @@
 # $FreeBSD$
-# $Id: meta.sys.mk,v 1.32 2017/06/11 03:24:04 sjg Exp $
+# $Id: meta.sys.mk,v 1.34 2019/01/24 19:36:25 sjg Exp $
 
 #
 #	@(#) Copyright (c) 2010, Simon J. Gerraty
@@ -62,13 +62,15 @@ META_MODE += silent=yes
 MACHINE = host
 .endif
 
-.if ${.MAKE.LEVEL} == 0
+.if !defined(MACHINE0)
 # it can be handy to know which MACHINE kicked off the build
 # for example, if using Makefild.depend for multiple machines,
 # allowing only MACHINE0 to update can keep things simple.
 MACHINE0 := ${MACHINE}
 .export MACHINE0
+.endif
 
+.if !defined(META2DEPS)
 .if defined(PYTHON) && exists(${PYTHON})
 # we prefer the python version of this - it is much faster
 META2DEPS ?= ${.PARSEDIR}/meta2deps.py
diff --git a/targets/Makefile b/targets/Makefile
index 8040953c6d1a6..7dcec18125a52 100644
--- a/targets/Makefile
+++ b/targets/Makefile
@@ -38,74 +38,6 @@
 DIRDEPS_FILTER = Mtargets/*
 .endif
 
-# in theory, this is what we want
-target_dirs = targets targets/pseudo
-# these tweak how we do it
-target_prefix = pkg- build-
-DIRDEPS := ${.TARGETS:Nall:${target_prefix:@p@S,^$p,,@:ts:}:@t@${target_dirs:@d@$d/$t@}@:@d@${exists(${SRCTOP}/$d):?$d:}@}
-
-all_machine_list = ${ALL_MACHINE_LIST} host common
-
-.if ${DIRDEPS:Mtargets/pseudo/*} != ""
-# all bets are off
-PKG_MACHINE_LIST = ${all_machine_list}
-.endif
-
-.if make(check-commit)
-# a special case
-DIRDEPS = targets/pseudo/check-commit
-.if defined(ALL_MACHINES)
-CHECK_MACHINE_LIST = all
-.undef ALL_MACHINES
-.endif
-SHIPDIR = no
-
-.else
-
-.if defined(ALL_MACHINES)
-DIRDEPS := ${DIRDEPS:O:u:@d@${all_machine_list:O:u:@m@${exists(${SRCTOP}/$d/${.MAKE.DEPENDFILE_PREFIX:T}.$m):?$d.$m:}@}@}
-.undef ALL_MACHINES
-PKG_MACHINE_LIST ?= ${DIRDEPS:E:O:u}
-.elif empty(REQUESTED_MACHINE)
-# the above may be insufficient.
-# some packages only support one machine which may not be ${MACHINE}
-# some support multiple, in which case unless ALL_MACHINES is defined
-# we only want ${MACHINE}
-plain := ${DIRDEPS:@d@${exists(${SRCTOP}/$d/${.MAKE.DEPENDFILE_PREFIX:T}):?$d:}@}
-.if ${plain} != ${DIRDEPS}
-qual := ${DIRDEPS:${plain:${M_ListToSkip}}:@d@${all_machine_list:O:u:@m@${exists(${SRCTOP}/$d/${.MAKE.DEPENDFILE_PREFIX:T}.$m):?$d.$m:}@}@}
-DIRDEPS := ${plain} ${qual}
-PKG_MACHINE_LIST ?= ${MACHINE} ${qual:E:O:u}
-.endif
-.else
-# check that a .MAKE.DEPENDFILE exists
-DIRDEPS := ${.MAKE.DEPENDFILE_PREFERENCE:T:@m@${DIRDEPS:@d@${exists(${SRCTOP}/$d/$m):?$d:}@}@:O:u}
-.endif
-.if !empty(PKG_MACHINE_LIST)
-.if ${PKG_MACHINE_LIST:Mdepend} != ""
-PKG_MACHINE_LIST = ${ALL_MACHINE_LIST}
-.endif
-PKG_MACHINE_LIST := ${PKG_MACHINE_LIST}
-.endif
-.endif
-
-# we don't use DIRDEPS_FILTER, since we only want it to 
-# apply to this initial list
-.if !empty(REQUESTED_MACHINE) && !empty(DIRDEPS)
-# this is a variant of the logic above, we want plain
-# but need to filter the qualified DIRDEPS to REQUESTED_MACHINE
-plain := ${DIRDEPS:@d@${exists(${SRCTOP}/$d/${.MAKE.DEPENDFILE_PREFIX:T}):?$d:}@}
-.if !empty(plain) && ${plain} != ${DIRDEPS}
-qual := ${DIRDEPS:${plain:${M_ListToSkip}}:M*.${REQUESTED_MACHINE}}
-.if empty(qual)
-qual := ${DIRDEPS:@d@${exists(${SRCTOP}/$d/${.MAKE.DEPENDFILE:T}):?$d.${.MAKE.DEPENDFILE:E}:}@}
-.endif
-DIRDEPS := ${plain} ${qual}
-.endif
-.if empty(DIRDEPS)
-.error ${REQUESTED_MACHINE} is not appropriate for ${.TARGETS}
-.endif
-.endif
 
 .if !empty(build_options)
 build_options := ${build_options:O:u}
@@ -115,6 +47,9 @@ $v = yes
 .export ${build_options}
 .endif
 
+# this does the work
+.include <dirdeps-targets.mk>
+
 .if !empty(DIRDEPS)
 # This is printed as we read the makefile
 # so provides a useful clue as to when we really started.
diff --git a/targets/Makefile.inc b/targets/Makefile.inc
index 2dc3b8155824c..9ef94473f6471 100644
--- a/targets/Makefile.inc
+++ b/targets/Makefile.inc
@@ -20,11 +20,12 @@ PKG_METHOD = no
 .endif
 .endif
 
+.MAIN: all
+
 # The makefile in subdirs should set this to something useful
 # the default should do nothing.
 PKG_METHOD ?= none
-
-.MAIN: all
+none:
 
 .if ${build-*:${M_L_TARGETS}} != ""
 # just build the bits, skip packaging