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# $Id: sys.dependfile.mk,v 1.8 2016/03/11 01:34:13 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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|
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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 .${MACHINE} |
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# |
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# The .MAKE.DEPENDFILE_PREFERENCE below is an example. |
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|
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# All depend file names should start with this |
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.MAKE.DEPENDFILE_PREFIX ?= Makefile.depend |
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|
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.if !empty(.MAKE.DEPENDFILE) && \ |
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${.MAKE.DEPENDFILE:M${.MAKE.DEPENDFILE_PREFIX}*} == "" |
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# let us do our thing below... |
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.undef .MAKE.DEPENDFILE |
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.endif |
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|
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# The order of preference: we will use the first one of these we find. |
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# It usually makes sense to order from most specific to least. |
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.MAKE.DEPENDFILE_PREFERENCE ?= \ |
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${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.${MACHINE} \ |
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${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX} |
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|
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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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|
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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} |
