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Diffstat (limited to 'mk/sys.dependfile.mk')
| -rw-r--r-- | mk/sys.dependfile.mk | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/mk/sys.dependfile.mk b/mk/sys.dependfile.mk new file mode 100644 index 0000000..42cec61 --- /dev/null +++ b/mk/sys.dependfile.mk @@ -0,0 +1,51 @@ +# $Id: sys.dependfile.mk,v 1.5 2013/03/08 00:59:21 sjg Exp $ +# +# @(#) Copyright (c) 2012, Simon J. Gerraty +# +# This file is provided in the hope that it will +# be of use. There is absolutely NO WARRANTY. +# Permission to copy, redistribute or otherwise +# use this file is hereby granted provided that +# the above copyright notice and this notice are +# left intact. +# +# Please send copies of changes and bug-fixes to: +# sjg@crufty.net +# + +# This only makes sense in meta mode. +# This allows a mixture of auto generated as well as manually edited +# dependency files, which can be differentiated by their names. +# As per dirdeps.mk we only require: +# 1. a common prefix +# 2. that machine specific files end in .${MACHINE} +# +# The .MAKE.DEPENDFILE_PREFERENCE below is an example. + +# All depend file names should start with this +.MAKE.DEPENDFILE_PREFIX ?= Makefile.depend + +# The order of preference: we will use the first one of these we find. +# It usually makes sense to order from most specific to least. +.MAKE.DEPENDFILE_PREFERENCE ?= \ + ${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.${MACHINE} \ + ${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX} + +# Normally the 1st entry is our default choice +# Another useful default is ${.MAKE.DEPENDFILE_PREFIX} +.MAKE.DEPENDFILE_DEFAULT ?= ${.MAKE.DEPENDFILE_PREFERENCE:[1]} + +_e := ${.MAKE.DEPENDFILE_PREFERENCE:@m@${exists($m):?$m:}@} +.if !empty(_e) +.MAKE.DEPENDFILE := ${_e:[1]} +.elif ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}} != "" && ${.MAKE.DEPENDFILE_DEFAULT:E} != ${MACHINE} +# MACHINE specific depend files are supported, but *not* default. +# If any already exist, we should follow suit. +_aml = ${ALL_MACHINE_LIST:Uarm amd64 i386 powerpc:N${MACHINE}} ${MACHINE} +# MACHINE must be the last entry in _aml ;-) +_e := ${_aml:@MACHINE@${.MAKE.DEPENDFILE_PREFERENCE:@m@${exists($m):?$m:}@}@} +.if !empty(_e) +.MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}:[1]} +.endif +.endif +.MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_DEFAULT} |