61 lines
2.1 KiB
Makefile
61 lines
2.1 KiB
Makefile
# $FreeBSD$
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# $Id: sys.dependfile.mk,v 1.7 2016/02/20 01:57:39 sjg Exp $
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#
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# @(#) Copyright (c) 2012, 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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# This only makes sense in meta mode.
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# This allows a mixture of auto generated as well as manually edited
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# dependency files, which can be differentiated by their names.
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# As per dirdeps.mk we only require:
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# 1. a common prefix
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# 2. that machine specific files end in .${MACHINE}
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#
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# The .MAKE.DEPENDFILE_PREFERENCE below is an example.
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# All depend file names should start with this
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.MAKE.DEPENDFILE_PREFIX ?= Makefile.depend
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.if !empty(.MAKE.DEPENDFILE) && \
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${.MAKE.DEPENDFILE:M${.MAKE.DEPENDFILE_PREFIX}*} == ""
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# let us do our thing below...
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.undef .MAKE.DEPENDFILE
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.endif
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# The order of preference: we will use the first one of these we find.
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# It usually makes sense to order from most specific to least.
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.MAKE.DEPENDFILE_PREFERENCE ?= \
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${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.${MACHINE} \
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${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX}
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# Normally the 1st entry is our default choice
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# Another useful default is ${.MAKE.DEPENDFILE_PREFIX}
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.MAKE.DEPENDFILE_DEFAULT ?= ${.MAKE.DEPENDFILE_PREFERENCE:[1]}
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_e := ${.MAKE.DEPENDFILE_PREFERENCE:@m@${exists($m):?$m:}@}
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.if !empty(_e)
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.MAKE.DEPENDFILE := ${_e:[1]}
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.elif ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}} != "" && ${.MAKE.DEPENDFILE_DEFAULT:E} != ${MACHINE}
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# MACHINE specific depend files are supported, but *not* default.
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# If any already exist, we should follow suit.
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_aml = ${ALL_MACHINE_LIST:Uarm amd64 i386 powerpc:N${MACHINE}} ${MACHINE}
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# make sure we restore MACHINE
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_m := ${MACHINE}
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_e := ${_aml:@MACHINE@${.MAKE.DEPENDFILE_PREFERENCE:@m@${exists($m):?$m:}@}@}
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MACHINE := ${_m}
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.if !empty(_e)
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.MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}:[1]}
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.endif
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.endif
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.MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_DEFAULT}
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