1# $Id: meta.sys.mk,v 1.28 2016/04/05 15:58:37 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.-include <local.meta.sys.mk> 24 25# absoulte path to what we are reading. 26_PARSEDIR = ${.PARSEDIR:tA} 27 28META_MODE += meta verbose 29.MAKE.MODE ?= ${META_MODE} 30 31.if ${.MAKE.LEVEL} == 0 32_make_mode := ${.MAKE.MODE} ${META_MODE} 33.if ${_make_mode:M*read*} != "" || ${_make_mode:M*nofilemon*} != "" 34# tell everyone we are not updating Makefile.depend* 35UPDATE_DEPENDFILE = NO 36.export UPDATE_DEPENDFILE 37.endif 38.if ${UPDATE_DEPENDFILE:Uyes:tl} == "no" && !exists(/dev/filemon) 39# we should not get upset 40META_MODE += nofilemon 41.export META_MODE 42.endif 43.endif 44 45.if !defined(NO_SILENT) 46.if ${MAKE_VERSION} > 20110818 47# only be silent when we have a .meta file 48META_MODE += silent=yes 49.else 50.SILENT: 51.endif 52.endif 53 54# we use the pseudo machine "host" for the build host. 55# this should be taken care of before we get here 56.if ${OBJTOP:Ua} == ${HOST_OBJTOP:Ub} 57MACHINE = host 58.endif 59 60.if ${.MAKE.LEVEL} == 0 61# it can be handy to know which MACHINE kicked off the build 62# for example, if using Makefild.depend for multiple machines, 63# allowing only MACHINE0 to update can keep things simple. 64MACHINE0 := ${MACHINE} 65.export MACHINE0 66 67.if defined(PYTHON) && exists(${PYTHON}) 68# we prefer the python version of this - it is much faster 69META2DEPS ?= ${.PARSEDIR}/meta2deps.py 70.else 71META2DEPS ?= ${.PARSEDIR}/meta2deps.sh 72.endif 73META2DEPS := ${META2DEPS} 74.export META2DEPS 75.endif 76 77MAKE_PRINT_VAR_ON_ERROR += \ 78 .ERROR_TARGET \ 79 .ERROR_META_FILE \ 80 .MAKE.LEVEL \ 81 MAKEFILE \ 82 .MAKE.MODE 83 84.if !defined(SB) && defined(SRCTOP) 85SB = ${SRCTOP:H} 86.endif 87ERROR_LOGDIR ?= ${SB}/error 88meta_error_log = ${ERROR_LOGDIR}/meta-${.MAKE.PID}.log 89 90# we are not interested in make telling us a failure happened elsewhere 91.ERROR: _metaError 92_metaError: .NOMETA .NOTMAIN 93 -@[ "${.ERROR_META_FILE}" ] && { \ 94 grep -q 'failure has been detected in another branch' ${.ERROR_META_FILE} && exit 0; \ 95 mkdir -p ${meta_error_log:H}; \ 96 cp ${.ERROR_META_FILE} ${meta_error_log}; \ 97 echo "ERROR: log ${meta_error_log}" >&2; }; : 98 99.endif 100 101META_COOKIE_TOUCH= 102# some targets need to be .PHONY in non-meta mode 103META_NOPHONY= .PHONY 104# Are we, after all, in meta mode? 105.if ${.MAKE.MODE:Uno:Mmeta*} != "" 106MKDEP_MK = meta.autodep.mk 107 108.if ${.MAKE.MAKEFILES:M*sys.dependfile.mk} == "" 109# this does all the smarts of setting .MAKE.DEPENDFILE 110.-include <sys.dependfile.mk> 111# check if we got anything sane 112.if ${.MAKE.DEPENDFILE} == ".depend" 113.undef .MAKE.DEPENDFILE 114.endif 115.MAKE.DEPENDFILE ?= Makefile.depend 116.endif 117 118# we can afford to use cookies to prevent some targets 119# re-running needlessly 120META_COOKIE_TOUCH= touch ${COOKIE.${.TARGET}:U${.OBJDIR}/${.TARGET}} 121META_NOPHONY= 122.if ${UPDATE_DEPENDFILE:Uyes:tl} != "no" 123.if ${.MAKEFLAGS:Uno:M-k} != "" 124# make this more obvious 125.warning Setting UPDATE_DEPENDFILE=NO due to -k 126UPDATE_DEPENDFILE= NO 127.export UPDATE_DEPENDFILE 128.elif !exists(/dev/filemon) 129.error ${.newline}ERROR: The filemon module (/dev/filemon) is not loaded. 130.endif 131.endif 132 133.if ${.MAKE.LEVEL} == 0 134# make sure dirdeps target exists and do it first 135all: dirdeps .WAIT 136dirdeps: 137.NOPATH: dirdeps 138 139.if defined(ALL_MACHINES) 140# the first .MAIN: is what counts 141# by default dirdeps is all we want at level0 142.MAIN: dirdeps 143# tell dirdeps.mk what we want 144BUILD_AT_LEVEL0 = no 145.endif 146.if ${.TARGETS:Nall} == "" 147# it works best if we do everything via sub-makes 148BUILD_AT_LEVEL0 ?= no 149.endif 150 151.endif 152.endif 153.endif 154