1# $Id: meta.sys.mk,v 1.20 2014/08/04 05:12:27 sjg Exp $ 2 3# 4# @(#) Copyright (c) 2010, 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# include this if you want to enable meta mode 18# for maximum benefit, requires filemon(4) driver. 19 20.if ${MAKE_VERSION:U0} > 20100901 21.if !target(.ERROR) 22 23 24META_MODE += meta verbose 25.MAKE.MODE ?= ${META_MODE} 26 27.if ${.MAKE.LEVEL} == 0 28_make_mode := ${.MAKE.MODE} ${META_MODE} 29.if ${_make_mode:M*read*} != "" || ${_make_mode:M*nofilemon*} != "" 30# tell everyone we are not updating Makefile.depend* 31UPDATE_DEPENDFILE = NO 32.export UPDATE_DEPENDFILE 33.endif 34.if ${UPDATE_DEPENDFILE:Uyes:tl} == "no" && !exists(/dev/filemon) 35# we should not get upset 36META_MODE += nofilemon 37.export META_MODE 38.endif 39.endif 40 41.if !defined(NO_SILENT) 42.if ${MAKE_VERSION} > 20110818 43# only be silent when we have a .meta file 44META_MODE += silent=yes 45.else 46.SILENT: 47.endif 48.endif 49 50# make defaults .MAKE.DEPENDFILE to .depend 51# that won't work for us. 52.if ${.MAKE.DEPENDFILE} == ".depend" 53.undef .MAKE.DEPENDFILE 54.endif 55 56# if you don't cross build for multiple MACHINEs concurrently, then 57# .MAKE.DEPENDFILE = Makefile.depend 58# probably makes sense - you can set that in local.sys.mk 59.MAKE.DEPENDFILE ?= Makefile.depend.${MACHINE} 60 61# we use the pseudo machine "host" for the build host. 62# this should be taken care of before we get here 63.if ${OBJTOP:Ua} == ${HOST_OBJTOP:Ub} 64MACHINE = host 65.endif 66 67.if ${.MAKE.LEVEL} == 0 68# it can be handy to know which MACHINE kicked off the build 69# for example, if using Makefild.depend for multiple machines, 70# allowing only MACHINE0 to update can keep things simple. 71MACHINE0 := ${MACHINE} 72 73.if defined(PYTHON) && exists(${PYTHON}) 74# we prefer the python version of this - it is much faster 75META2DEPS ?= ${.PARSEDIR}/meta2deps.py 76.else 77META2DEPS ?= ${.PARSEDIR}/meta2deps.sh 78.endif 79META2DEPS := ${META2DEPS} 80.export META2DEPS 81.endif 82 83MAKE_PRINT_VAR_ON_ERROR += \ 84 .ERROR_TARGET \ 85 .ERROR_META_FILE \ 86 .MAKE.LEVEL \ 87 MAKEFILE \ 88 .MAKE.MODE 89 90.if !defined(SB) && defined(SRCTOP) 91SB = ${SRCTOP:H} 92.endif 93ERROR_LOGDIR ?= ${SB}/error 94meta_error_log = ${ERROR_LOGDIR}/meta-${.MAKE.PID}.log 95 96# we are not interested in make telling us a failure happened elsewhere 97.ERROR: _metaError 98_metaError: .NOMETA .NOTMAIN 99 -@[ "${.ERROR_META_FILE}" ] && { \ 100 grep -q 'failure has been detected in another branch' ${.ERROR_META_FILE} && exit 0; \ 101 mkdir -p ${meta_error_log:H}; \ 102 cp ${.ERROR_META_FILE} ${meta_error_log}; \ 103 echo "ERROR: log ${meta_error_log}" >&2; }; : 104 105.endif 106 107# Are we, after all, in meta mode? 108.if ${.MAKE.MODE:Mmeta*} != "" 109MKDEP_MK = meta.autodep.mk 110 111# if we think we are updating dependencies, 112# then filemon had better be present 113.if ${UPDATE_DEPENDFILE:Uyes:tl} != "no" && !exists(/dev/filemon) 114.error ${.newline}ERROR: The filemon module (/dev/filemon) is not loaded. 115.endif 116 117.if ${.MAKE.LEVEL} == 0 118# make sure dirdeps target exists and do it first 119all: dirdeps .WAIT 120dirdeps: 121.NOPATH: dirdeps 122 123.if defined(ALL_MACHINES) 124# the first .MAIN: is what counts 125# by default dirdeps is all we want at level0 126.MAIN: dirdeps 127# tell dirdeps.mk what we want 128BUILD_AT_LEVEL0 = no 129.endif 130.if ${.TARGETS:Nall} == "" 131# it works best if we do everything via sub-makes 132BUILD_AT_LEVEL0 ?= no 133.endif 134 135.endif 136.endif 137.endif 138