74 lines
2.1 KiB
Makefile
74 lines
2.1 KiB
Makefile
# $Id: dirdeps-options.mk,v 1.9 2018/09/20 00:07:19 sjg Exp $
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#
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# @(#) Copyright (c) 2018, 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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##
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#
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# This makefile is used to deal with optional DIRDEPS.
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#
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# It is to be included by Makefile.depend.options in a
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# directory which has DIRDEPS affected by optional features.
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# Makefile.depend.options should set DIRDEPS_OPTIONS and
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# may also set specific DIRDEPS.* for those options.
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#
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# If a Makefile.depend.options file exists, it will be included by
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# dirdeps.mk and meta.autodep.mk
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#
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# We include local.dirdeps-options.mk which may also define DIRDEPS.*
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# for options.
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#
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# Thus a directory, that is affected by an option FOO would have
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# a Makefile.depend.options that sets
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# DIRDEPS_OPTIONS= FOO
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# It can also set either/both of
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# DIRDEPS.FOO.yes
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# DIRDEPS.FOO.no
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# to whatever applies for that dir, or it can rely on globals
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# set in local.dirdeps-options.mk
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# Either way, we will .undef DIRDEPS.* when done.
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# This should have been set by Makefile.depend.options
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# before including us
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DIRDEPS_OPTIONS ?=
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# pickup any DIRDEPS.* we need
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.-include <local.dirdeps-options.mk>
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.if ${.MAKE.LEVEL} == 0
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# :U below avoids potential errors when we :=
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.for o in ${DIRDEPS_OPTIONS:tu}
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DIRDEPS += ${DIRDEPS.$o.${MK_$o:U}:U}
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.endfor
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DIRDEPS := ${DIRDEPS:O:u}
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# avoid cross contamination
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.for o in ${DIRDEPS_OPTIONS:tu}
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.undef DIRDEPS.$o.yes
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.undef DIRDEPS.$o.no
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.endfor
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.else
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# whether options are enabled or not,
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# we want to filter out the relevant DIRDEPS.*
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# we should only be included by meta.autodep.mk
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# if dependencies are to be updated
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.for o in ${DIRDEPS_OPTIONS:tu}
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.for d in ${DIRDEPS.$o.yes} ${DIRDEPS.$o.no}
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.if exists(${SRCTOP}/$d)
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GENDIRDEPS_FILTER += N$d*
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.elif exists(${SRCTOP}/${d:R})
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GENDIRDEPS_FILTER += N${d:R}*
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.endif
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.endfor
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.endfor
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.endif
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