1 # $Id: sys.dependfile.mk,v 1.5 2013/03/08 00:59:21 sjg Exp $
3 # @(#) Copyright (c) 2012, Simon J. Gerraty
5 # This file is provided in the hope that it will
6 # be of use. There is absolutely NO WARRANTY.
7 # Permission to copy, redistribute or otherwise
8 # use this file is hereby granted provided that
9 # the above copyright notice and this notice are
12 # Please send copies of changes and bug-fixes to:
16 # This only makes sense in meta mode.
17 # This allows a mixture of auto generated as well as manually edited
18 # dependency files, which can be differentiated by their names.
19 # As per dirdeps.mk we only require:
21 # 2. that machine specific files end in .${MACHINE}
23 # The .MAKE.DEPENDFILE_PREFERENCE below is an example.
25 # All depend file names should start with this
26 .MAKE.DEPENDFILE_PREFIX ?= Makefile.depend
28 # The order of preference: we will use the first one of these we find.
29 # It usually makes sense to order from most specific to least.
30 .MAKE.DEPENDFILE_PREFERENCE ?= \
31 ${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.${MACHINE} \
32 ${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX}
34 # Normally the 1st entry is our default choice
35 # Another useful default is ${.MAKE.DEPENDFILE_PREFIX}
36 .MAKE.DEPENDFILE_DEFAULT ?= ${.MAKE.DEPENDFILE_PREFERENCE:[1]}
38 _e := ${.MAKE.DEPENDFILE_PREFERENCE:@m@${exists($m):?$m:}@}
40 .MAKE.DEPENDFILE := ${_e:[1]}
41 .elif ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}} != "" && ${.MAKE.DEPENDFILE_DEFAULT:E} != ${MACHINE}
42 # MACHINE specific depend files are supported, but *not* default.
43 # If any already exist, we should follow suit.
44 _aml = ${ALL_MACHINE_LIST:Uarm amd64 i386 powerpc:N${MACHINE}} ${MACHINE}
45 # MACHINE must be the last entry in _aml ;-)
46 _e := ${_aml:@MACHINE@${.MAKE.DEPENDFILE_PREFERENCE:@m@${exists($m):?$m:}@}@}
48 .MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}:[1]}
51 .MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_DEFAULT}