1# $FreeBSD$ 2# $Id: sys.dependfile.mk,v 1.6 2014/08/02 18:02:06 sjg Exp $ 3# 4# @(#) Copyright (c) 2012, Simon J. Gerraty 5# 6# This file is provided in the hope that it will 7# be of use. There is absolutely NO WARRANTY. 8# Permission to copy, redistribute or otherwise 9# use this file is hereby granted provided that 10# the above copyright notice and this notice are 11# left intact. 12# 13# Please send copies of changes and bug-fixes to: 14# sjg@crufty.net 15# 16 17# This only makes sense in meta mode. 18# This allows a mixture of auto generated as well as manually edited 19# dependency files, which can be differentiated by their names. 20# As per dirdeps.mk we only require: 21# 1. a common prefix 22# 2. that machine specific files end in .${MACHINE} 23# 24# The .MAKE.DEPENDFILE_PREFERENCE below is an example. 25 26# All depend file names should start with this 27.MAKE.DEPENDFILE_PREFIX ?= Makefile.depend 28 29.if !empty(.MAKE.DEPENDFILE) && \ 30 ${.MAKE.DEPENDFILE:M${.MAKE.DEPENDFILE_PREFIX}*} == "" 31# let us do our thing below... 32.undef .MAKE.DEPENDFILE 33.endif 34 35# The order of preference: we will use the first one of these we find. 36# It usually makes sense to order from most specific to least. 37.MAKE.DEPENDFILE_PREFERENCE ?= \ 38 ${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.${MACHINE} \ 39 ${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX} 40 41# Normally the 1st entry is our default choice 42# Another useful default is ${.MAKE.DEPENDFILE_PREFIX} 43.MAKE.DEPENDFILE_DEFAULT ?= ${.MAKE.DEPENDFILE_PREFERENCE:[1]} 44 45_e := ${.MAKE.DEPENDFILE_PREFERENCE:@m@${exists($m):?$m:}@} 46.if !empty(_e) 47.MAKE.DEPENDFILE := ${_e:[1]} 48.elif ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}} != "" && ${.MAKE.DEPENDFILE_DEFAULT:E} != ${MACHINE} 49# MACHINE specific depend files are supported, but *not* default. 50# If any already exist, we should follow suit. 51_aml = ${ALL_MACHINE_LIST:Uarm amd64 i386 powerpc:N${MACHINE}} ${MACHINE} 52# MACHINE must be the last entry in _aml ;-) 53_e := ${_aml:@MACHINE@${.MAKE.DEPENDFILE_PREFERENCE:@m@${exists($m):?$m:}@}@} 54.if !empty(_e) 55.MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}:[1]} 56.endif 57.endif 58.MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_DEFAULT} 59