mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-21 18:27:22 +00:00
6bbc783f48
Lots of code refactoring, simplification and cleanup. Lots of new unit-tests providing much higher code coverage. All courtesy of rillig at netbsd. Other significant changes: o new read-only variable .SHELL which provides the path of the shell used to run scripts (as defined by the .SHELL target). o new debug option -dl: LINT mode, does the equivalent of := for all variable assignments so that file and line number are reported for variable parse errors.
386 lines
12 KiB
Makefile
386 lines
12 KiB
Makefile
# $Id: gendirdeps.mk,v 1.46 2020/08/19 17:51:53 sjg Exp $
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# Copyright (c) 2011-2020, Simon J. Gerraty
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# Copyright (c) 2010-2018, Juniper Networks, Inc.
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# All rights reserved.
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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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#
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# This makefile [re]generates ${.MAKE.DEPENDFILE}
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#
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.include <install-new.mk>
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# Assumptions:
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# RELDIR is the relative path from ${SRCTOP} to ${_CURDIR}
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# (SRCTOP is ${SB}/src)
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# _CURDIR is the absolute version of ${.CURDIR}
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# _OBJDIR is the absolute version of ${.OBJDIR}
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# _objroot is realpath of ${_OBJTOP} without ${MACHINE}
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# this may be different from _OBJROOT if $SB/obj is a
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# symlink to another filesystem.
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# _objroot must be a prefix match for _objtop
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.MAIN: all
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# keep this simple
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.MAKE.MODE = compat
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all:
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_CURDIR ?= ${.CURDIR}
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_OBJDIR ?= ${.OBJDIR}
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_OBJTOP ?= ${OBJTOP}
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_OBJROOT ?= ${OBJROOT:U${_OBJTOP:H}}
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.if ${_OBJROOT:M*/}
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_slash=/
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.else
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_slash=
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.endif
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_objroot ?= ${_OBJROOT:tA}${_slash}
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_this = ${.PARSEDIR}/${.PARSEFILE}
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# remember what to make
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_DEPENDFILE := ${_CURDIR}/${.MAKE.DEPENDFILE:T}
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# We do _not_ want to read our own output!
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.MAKE.DEPENDFILE = /dev/null
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# caller should have set this
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META_FILES ?= ${.MAKE.META.FILES}
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.if !empty(META_FILES)
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.if ${.MAKE.LEVEL} > 0 && !empty(GENDIRDEPS_FILTER)
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# so we can compare below
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.-include <${_DEPENDFILE}>
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# yes, I mean :U with no value
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_DIRDEPS := ${DIRDEPS:U:O:u}
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.endif
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META_FILES := ${META_FILES:T:O:u}
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# pickup customizations
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.-include <local.gendirdeps.mk>
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# these are actually prefixes that we'll skip
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# they should all be absolute paths
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SKIP_GENDIRDEPS ?=
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.if !empty(SKIP_GENDIRDEPS)
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_skip_gendirdeps = egrep -v '^(${SKIP_GENDIRDEPS:O:u:ts|})' |
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.else
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_skip_gendirdeps =
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.endif
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# Below we will turn _{VAR} into ${VAR} which keeps this simple
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# GENDIRDEPS_FILTER_DIR_VARS is a list of dirs to be substiuted for.
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# GENDIRDEPS_FILTER_VARS is more general.
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# In each case order matters.
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.if !empty(GENDIRDEPS_FILTER_DIR_VARS)
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GENDIRDEPS_FILTER += ${GENDIRDEPS_FILTER_DIR_VARS:@v@S,${$v},_{${v}},@}
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.endif
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.if !empty(GENDIRDEPS_FILTER_VARS)
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GENDIRDEPS_FILTER += ${GENDIRDEPS_FILTER_VARS:@v@S,/${$v}/,/_{${v}}/,@:NS,//,*:u}
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.endif
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# this (*should* be set in meta.sys.mk)
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# is the script that extracts what we want.
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META2DEPS ?= ${.PARSEDIR}/meta2deps.sh
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META2DEPS := ${META2DEPS}
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.if ${DEBUG_GENDIRDEPS:Uno:@x@${RELDIR:M$x}@} != "" && ${DEBUG_GENDIRDEPS:Uno:Mmeta2d*} != ""
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_time = time
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_sh_x = sh -x
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_py_d = -ddd
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.else
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_time =
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_sh_x =
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_py_d =
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.endif
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.if ${META2DEPS:E} == "py"
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# we can afford to do this all the time.
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DPDEPS ?= no
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META2DEPS_CMD = ${_time} ${PYTHON} ${META2DEPS} ${_py_d}
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.if ${DPDEPS:tl} != "no"
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META2DEPS_CMD += -D ${DPDEPS}
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.endif
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META2DEPS_FILTER = sed 's,^src:,${SRCTOP}/,;s,^\([^/]\),${OBJTOP}/\1,' |
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.elif ${META2DEPS:E} == "sh"
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META2DEPS_CMD = ${_time} ${_sh_x} ${META2DEPS} OBJTOP=${_OBJTOP}
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.else
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META2DEPS_CMD ?= ${META2DEPS}
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.endif
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.if ${TARGET_OBJ_SPEC:U${MACHINE}} != ${MACHINE}
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META2DEPS_CMD += -T ${TARGET_OBJ_SPEC}
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.endif
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META2DEPS_CMD += \
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-R ${RELDIR} -H ${HOST_TARGET} \
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${M2D_OBJROOTS:O:u:@o@-O $o@} \
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${M2D_EXCLUDES:O:u:@o@-X $o@} \
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M2D_OBJROOTS += ${OBJTOP} ${_OBJROOT} ${_objroot}
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.if defined(SB_OBJROOT)
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M2D_OBJROOTS += ${SB_OBJROOT}
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.endif
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.if defined(STAGE_ROOT)
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M2D_OBJROOTS += ${STAGE_ROOT}
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.endif
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.if ${.MAKE.DEPENDFILE_PREFERENCE:U${.MAKE.DEPENDFILE}:M*.${MACHINE}} == ""
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# meta2deps.py only groks objroot
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# so we need to give it what it expects
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# and tell it not to add machine qualifiers
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META2DEPS_ARGS += MACHINE=none
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.endif
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.if defined(SB_BACKING_SB)
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META2DEPS_CMD += -S ${SB_BACKING_SB}/src
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M2D_OBJROOTS += ${SB_BACKING_SB}/${SB_OBJPREFIX}
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.endif
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GENDIRDEPS_SEDCMDS += \
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-e 's,//*$$,,;s,\.${HOST_TARGET:Uhost}$$,.host,' \
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-e 's,\.${HOST_TARGET32:Uhost32}$$,.host32,' \
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-e 's,\.${MACHINE}$$,,' \
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-e 's:\.${TARGET_SPEC:U${MACHINE}}$$::'
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# we are only interested in the dirs
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# specifically those we read something from.
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# we canonicalize them to keep things simple
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# if we are using a split-fs sandbox, it gets a little messier.
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_objtop := ${_OBJTOP:tA}
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# some people put *.meta in META_XTRAS to make sure we get here
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_meta_files := ${META_FILES:N\*.meta:O:u}
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# assume a big list
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_meta_files_arg= @meta.list
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.if empty(_meta_files) && ${META_FILES:M\*.meta} != ""
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# XXX this should be considered a bad idea,
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# since we cannot ignore stale .meta
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x != cd ${_OBJDIR} && find . -name '*.meta' -print -o \( -type d ! -name . -prune \) | sed 's,^./,,' > meta.list; echo
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.elif ${_meta_files:[#]} > 500
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.export _meta_files
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x != echo; for m in $$_meta_files; do echo $$m; done > meta.list
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# _meta_files is consuming a lot of env space
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# that can impact command line length,
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# and we do not need it any more
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.undef _meta_files
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.unexport _meta_files
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.else
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_meta_files_arg:= ${_meta_files}
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.endif
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dir_list != cd ${_OBJDIR} && \
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${META2DEPS_CMD} MACHINE=${MACHINE} \
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SRCTOP=${SRCTOP} RELDIR=${RELDIR} CURDIR=${_CURDIR} \
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${META2DEPS_ARGS} \
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${_meta_files_arg} | ${META2DEPS_FILTER} ${_skip_gendirdeps} \
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sed ${GENDIRDEPS_SEDCMDS}
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.if ${dir_list:M*ERROR\:*} != ""
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.warning ${dir_list:tW:C,.*(ERROR),\1,}
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.warning Skipping ${_DEPENDFILE:S,${SRCTOP}/,,}
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# we are not going to update anything
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.else
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dpadd_dir_list=
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.if !empty(DPADD)
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_nonlibs := ${DPADD:T:Nlib*:N*include}
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.if !empty(_nonlibs)
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ddep_list =
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.for f in ${_nonlibs:@x@${DPADD:M*/$x}@}
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.if exists($f.dirdep)
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ddep_list += $f.dirdep
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.elif exists(${f:H}.dirdep)
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ddep_list += ${f:H}.dirdep
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.else
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dir_list += ${f:H:tA}
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dpadd_dir_list += ${f:H:tA}
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.endif
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.endfor
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.if !empty(ddep_list)
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ddeps != cat ${ddep_list:O:u} | ${META2DEPS_FILTER} ${_skip_gendirdeps} \
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sed ${GENDIRDEPS_SEDCMDS}
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.if ${DEBUG_GENDIRDEPS:Uno:@x@${RELDIR:M$x}@} != ""
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.info ${RELDIR}: raw_dir_list='${dir_list}'
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.info ${RELDIR}: ddeps='${ddeps}'
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.endif
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dir_list += ${ddeps}
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.endif
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.endif
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.endif
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# DIRDEPS represent things that had to have been built first
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# so they should all be undir OBJTOP.
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# Note that ${_OBJTOP}/bsd/include/machine will get reported
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# to us as $SRCTOP/bsd/sys/$MACHINE_ARCH/include meaning we
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# will want to visit bsd/include
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# so we add
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# ${"${dir_list:M*bsd/sys/${MACHINE_ARCH}/include}":?bsd/include:}
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# to GENDIRDEPS_DIR_LIST_XTRAS
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_objtops = ${OBJTOP} ${_OBJTOP} ${_objtop}
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_objtops := ${_objtops:O:u}
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dirdep_list = \
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${_objtops:@o@${dir_list:M$o*/*:C,$o[^/]*/,,}@} \
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${GENDIRDEPS_DIR_LIST_XTRAS}
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# sort longest first
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M2D_OBJROOTS := ${M2D_OBJROOTS:O:u:[-1..1]}
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# anything we use from an object dir other than ours
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# needs to be qualified with its .<machine> suffix
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# (we used the pseudo machine "host" for the HOST_TARGET).
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skip_ql= ${SRCTOP}* ${_objtops:@o@$o*@}
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.for o in ${M2D_OBJROOTS:${skip_ql:${M_ListToSkip}}}
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# we need := so only skip_ql to this point applies
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ql.$o := ${dir_list:${skip_ql:${M_ListToSkip}}:M$o*/*/*:C,$o([^/]+)/(.*),\2.\1,:S,.${HOST_TARGET},.host,}
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qualdir_list += ${ql.$o}
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.if ${DEBUG_GENDIRDEPS:Uno:@x@${RELDIR:M$x}@} != ""
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.info ${RELDIR}: o=$o ${ql.$o qualdir_list:L:@v@$v=${$v}@}
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.endif
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skip_ql+= $o*
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.endfor
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dirdep_list := ${dirdep_list:O:u}
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qualdir_list := ${qualdir_list:N*.${MACHINE}:O:u}
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DIRDEPS = \
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${dirdep_list:N${RELDIR}:N${RELDIR}/*} \
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${qualdir_list:N${RELDIR}.*:N${RELDIR}/*}
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# We only consider things below $RELDIR/ if they have a makefile.
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# This is the same test that _DIRDEP_USE applies.
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# We have do a double test with dirdep_list as it _may_ contain
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# qualified dirs - if we got anything from a stage dir.
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# qualdir_list we know are all qualified.
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# It would be nice do peform this check for all of DIRDEPS,
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# but we cannot assume that all of the tree is present,
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# in fact we can only assume that RELDIR is.
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DIRDEPS += \
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${dirdep_list:M${RELDIR}/*:@d@${.MAKE.MAKEFILE_PREFERENCE:@m@${exists(${SRCTOP}/$d/$m):?$d:${exists(${SRCTOP}/${d:R}/$m):?$d:}}@}@} \
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${qualdir_list:M${RELDIR}/*:@d@${.MAKE.MAKEFILE_PREFERENCE:@m@${exists(${SRCTOP}/${d:R}/$m):?$d:}@}@}
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# what modifiers do we allow in GENDIRDEPS_FILTER
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GENDIRDEPS_FILTER_MASK += @CMNS
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DIRDEPS := ${DIRDEPS:${GENDIRDEPS_FILTER:UNno:M[${GENDIRDEPS_FILTER_MASK:O:u:ts}]*:ts:}:C,//+,/,g:O:u}
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.if ${DEBUG_GENDIRDEPS:Uno:@x@${RELDIR:M$x}@} != ""
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.info ${RELDIR}: M2D_OBJROOTS=${M2D_OBJROOTS}
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.info ${RELDIR}: M2D_EXCLUDES=${M2D_EXCLUDES}
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.info ${RELDIR}: dir_list='${dir_list}'
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.info ${RELDIR}: dpadd_dir_list='${dpadd_dir_list}'
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.info ${RELDIR}: dirdep_list='${dirdep_list}'
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.info ${RELDIR}: qualdir_list='${qualdir_list}'
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.info ${RELDIR}: SKIP_GENDIRDEPS='${SKIP_GENDIRDEPS}'
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.info ${RELDIR}: GENDIRDEPS_FILTER='${GENDIRDEPS_FILTER}'
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.info ${RELDIR}: FORCE_DPADD='${DPADD}'
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.info ${RELDIR}: DIRDEPS='${DIRDEPS}'
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.endif
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# SRC_DIRDEPS is for checkout logic
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src_dirdep_list = \
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${dir_list:M${SRCTOP}/*:S,${SRCTOP}/,,}
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SRC_DIRDEPS = \
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${src_dirdep_list:N${RELDIR}:N${RELDIR}/*:C,(/h)/.*,,}
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SRC_DIRDEPS := ${SRC_DIRDEPS:${GENDIRDEPS_SRC_FILTER:UN/*:ts:}:C,//+,/,g:O:u}
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# if you want to capture SRC_DIRDEPS in .MAKE.DEPENDFILE put
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# SRC_DIRDEPS_FILE = ${_DEPENDFILE}
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# in local.gendirdeps.mk
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.if ${SRC_DIRDEPS_FILE:Uno:tl} != "no"
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ECHO_SRC_DIRDEPS = echo 'SRC_DIRDEPS = \'; echo '${SRC_DIRDEPS:@d@ $d \\${.newline}@}'; echo;
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.if ${SRC_DIRDEPS_FILE:T} == ${_DEPENDFILE:T}
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_include_src_dirdeps = ${ECHO_SRC_DIRDEPS}
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.else
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all: ${SRC_DIRDEPS_FILE}
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.if !target(${SRC_DIRDEPS_FILE})
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${SRC_DIRDEPS_FILE}: ${META_FILES} ${_this} ${META2DEPS}
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@(${ECHO_SRC_DIRDEPS}) > $@
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.endif
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.endif
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.endif
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_include_src_dirdeps ?=
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all: ${_DEPENDFILE}
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# if this is going to exist it would be there by now
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.if !exists(.depend)
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CAT_DEPEND = /dev/null
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.endif
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CAT_DEPEND ?= .depend
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.if !empty(_DIRDEPS) && ${DIRDEPS} != ${_DIRDEPS}
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# we may have changed a filter
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.PHONY: ${_DEPENDFILE}
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.endif
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LOCAL_DEPENDS_GUARD ?= _{.MAKE.LEVEL} > 0
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# 'cat .depend' should suffice, but if we are mixing build modes
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# .depend may contain things we don't want.
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# The sed command at the end of the stream, allows for the filters
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# to output _{VAR} tokens which we will turn into proper ${VAR} references.
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${_DEPENDFILE}: .NOMETA ${CAT_DEPEND:M.depend} ${META_FILES:O:u:@m@${exists($m):?$m:}@} ${_this} ${META2DEPS}
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@(${GENDIRDEPS_HEADER} echo '# Autogenerated - do NOT edit!'; echo; \
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echo 'DIRDEPS = \'; \
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echo '${DIRDEPS:@d@ $d \\${.newline}@}'; echo; \
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${_include_src_dirdeps} \
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echo '.include <dirdeps.mk>'; \
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echo; \
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echo '.if ${LOCAL_DEPENDS_GUARD}'; \
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echo '# local dependencies - needed for -jN in clean tree'; \
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[ -s ${CAT_DEPEND} ] && { grep : ${CAT_DEPEND} | grep -v '[/\\]'; }; \
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echo '.endif' ) | sed 's,_\([{(]\),$$\1,g' > $@.new${.MAKE.PID}
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@${InstallNew}; InstallNew -s $@.new${.MAKE.PID}
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.endif # meta2deps failed
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.elif !empty(SUBDIR)
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DIRDEPS := ${SUBDIR:S,^,${RELDIR}/,:O:u}
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all: ${_DEPENDFILE}
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${_DEPENDFILE}: .NOMETA ${MAKEFILE} ${_this}
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@(${GENDIRDEPS_HEADER} echo '# Autogenerated - do NOT edit!'; echo; \
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echo 'DIRDEPS = \'; \
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echo '${DIRDEPS:@d@ $d \\${.newline}@}'; echo; \
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echo '.include <dirdeps.mk>'; \
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echo ) | sed 's,_\([{(]\),$$\1,g' > $@.new
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@${InstallNew}; InstallNew $@.new
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.else
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# nothing to do
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all ${_DEPENDFILE}:
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.endif
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${_DEPENDFILE}: .PRECIOUS
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# don't waste time looking for ways to make .meta files
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.SUFFIXES:
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