# $FreeBSD$ # $Id: dirdeps-options.mk,v 1.18 2020/12/22 18:10:34 sjg Exp $ # # @(#) Copyright (c) 2018-2020, 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 deal with optional DIRDEPS. # # It is to be included by Makefile.depend.options in a # directory which has DIRDEPS affected by optional features. # Makefile.depend.options should set DIRDEPS_OPTIONS and # may also set specific DIRDEPS.* for those options. # # If a Makefile.depend.options file exists, it will be included by # dirdeps.mk and meta.autodep.mk # # We include local.dirdeps-options.mk which may also define DIRDEPS.* # for options. # # Thus a directory, that is affected by an option FOO would have # a Makefile.depend.options that sets # DIRDEPS_OPTIONS= FOO # It can also set either/both of # DIRDEPS.FOO.yes # DIRDEPS.FOO.no # to whatever applies for that dir, or it can rely on globals # set in local.dirdeps-options.mk # Either way, we will .undef DIRDEPS.* when done. # # In some cases the value of MK_FOO might depend on TARGET_SPEC # so we qualify MK_FOO with .${TARGET_SPEC} and each component # TARGET_SPEC_VAR (in reverse order) before using MK_FOO. # # This should have been set by Makefile.depend.options # before including us DIRDEPS_OPTIONS ?= # pickup any DIRDEPS.* we need .-include .if ${.MAKE.LEVEL} == 0 # :U below avoids potential errors when we := # some options can depend on TARGET_SPEC! DIRDEPS_OPTIONS_QUALIFIER_LIST ?= \ ${DEP_TARGET_SPEC:U${TARGET_SPEC}} \ ${TARGET_SPEC_VARSr:U${TARGET_SPEC_VARS}:@v@${DEP_$v:U${$v}}@} # note that we need to include $o in the variable _o$o # to ensure correct evaluation. .for o in ${DIRDEPS_OPTIONS} .undef _o$o .undef _v$o .for x in ${DIRDEPS_OPTIONS_QUALIFIER_LIST} .if defined(MK_$o.$x) _o$o ?= MK_$o.$x _v$o ?= ${MK_$o.$x} .endif .endfor _v$o ?= ${MK_$o} .if ${_debug_reldir:U0} .info ${DEP_RELDIR:U${RELDIR}}.${DEP_TARGET_SPEC:U${TARGET_SPEC}}: o=$o ${_o$o:UMK_$o}=${_v$o:U} DIRDEPS += ${DIRDEPS.$o.${_v$o:U}:U} .endif DIRDEPS += ${DIRDEPS.$o.${_v$o:U}:U} .endfor DIRDEPS := ${DIRDEPS:O:u} .if ${_debug_reldir:U0} .info ${DEP_RELDIR:U${RELDIR}}: DIRDEPS=${DIRDEPS} .endif # avoid cross contamination .for o in ${DIRDEPS_OPTIONS} .undef DIRDEPS.$o.yes .undef DIRDEPS.$o.no .undef _o$o .undef _v$o .endfor .else # whether options are enabled or not, # we want to filter out the relevant DIRDEPS.* # we should only be included by meta.autodep.mk # if dependencies are to be updated .for o in ${DIRDEPS_OPTIONS} .for d in ${DIRDEPS.$o.yes} ${DIRDEPS.$o.no} .if exists(${SRCTOP}/$d) GENDIRDEPS_FILTER += N$d* .elif exists(${SRCTOP}/${d:R}) GENDIRDEPS_FILTER += N${d:R}* .endif .endfor .endfor .endif