1# $FreeBSD$ 2# $Id: meta.sys.mk,v 1.19 2014/08/02 23:16:02 sjg Exp $ 3 4# 5# @(#) Copyright (c) 2010, Simon J. Gerraty 6# 7# This file is provided in the hope that it will 8# be of use. There is absolutely NO WARRANTY. 9# Permission to copy, redistribute or otherwise 10# use this file is hereby granted provided that 11# the above copyright notice and this notice are 12# left intact. 13# 14# Please send copies of changes and bug-fixes to: 15# sjg@crufty.net 16# 17 18# include this if you want to enable meta mode 19# for maximum benefit, requires filemon(4) driver. 20 21.if ${MAKE_VERSION:U0} > 20100901 22.if !target(.ERROR) 23 24.-include "local.meta.sys.mk" 25 26# absoulte path to what we are reading. 27_PARSEDIR = ${.PARSEDIR:tA} 28 29.if !defined(SYS_MK_DIR) 30SYS_MK_DIR := ${_PARSEDIR} 31.endif 32 33META_MODE += meta verbose 34.MAKE.MODE ?= ${META_MODE} 35 36.if ${.MAKE.LEVEL} == 0 37_make_mode := ${.MAKE.MODE} ${META_MODE} 38.if ${_make_mode:M*read*} != "" || ${_make_mode:M*nofilemon*} != "" 39# tell everyone we are not updating Makefile.depend* 40UPDATE_DEPENDFILE = NO 41.export UPDATE_DEPENDFILE 42.endif 43.if ${UPDATE_DEPENDFILE:Uyes:tl} == "no" && !exists(/dev/filemon) 44# we should not get upset 45META_MODE += nofilemon 46.export META_MODE 47.endif 48.endif 49 50.if !defined(NO_SILENT) 51.if ${MAKE_VERSION} > 20110818 52# only be silent when we have a .meta file 53META_MODE += silent=yes 54.else 55.SILENT: 56.endif 57.endif 58 59# make defaults .MAKE.DEPENDFILE to .depend 60# that won't work for us. 61.if ${.MAKE.DEPENDFILE} == ".depend" 62.undef .MAKE.DEPENDFILE 63.endif 64 65# if you don't cross build for multiple MACHINEs concurrently, then 66# .MAKE.DEPENDFILE = Makefile.depend 67# probably makes sense - you can set that in local.sys.mk 68.MAKE.DEPENDFILE ?= Makefile.depend.${MACHINE} 69 70# we use the pseudo machine "host" for the build host. 71# this should be taken care of before we get here 72.if ${OBJTOP:Ua} == ${HOST_OBJTOP:Ub} 73MACHINE = host 74.endif 75 76.if ${.MAKE.LEVEL} == 0 77# it can be handy to know which MACHINE kicked off the build 78# for example, if using Makefild.depend for multiple machines, 79# allowing only MACHINE0 to update can keep things simple. 80MACHINE0 := ${MACHINE} 81.export MACHINE0 82 83.if defined(PYTHON) && exists(${PYTHON}) 84# we prefer the python version of this - it is much faster 85META2DEPS ?= ${.PARSEDIR}/meta2deps.py 86.else 87META2DEPS ?= ${.PARSEDIR}/meta2deps.sh 88.endif 89META2DEPS := ${META2DEPS} 90.export META2DEPS 91.endif 92 93MAKE_PRINT_VAR_ON_ERROR += \ 94 .ERROR_TARGET \ 95 .ERROR_META_FILE \ 96 .MAKE.LEVEL \ 97 MAKEFILE \ 98 .MAKE.MODE 99 100.if !defined(SB) && defined(SRCTOP) 101SB = ${SRCTOP:H} 102.endif 103ERROR_LOGDIR ?= ${SB}/error 104meta_error_log = ${ERROR_LOGDIR}/meta-${.MAKE.PID}.log 105 106# we are not interested in make telling us a failure happened elsewhere 107.ERROR: _metaError 108_metaError: .NOMETA .NOTMAIN 109 -@[ "${.ERROR_META_FILE}" ] && { \ 110 grep -q 'failure has been detected in another branch' ${.ERROR_META_FILE} && exit 0; \ 111 mkdir -p ${meta_error_log:H}; \ 112 cp ${.ERROR_META_FILE} ${meta_error_log}; \ 113 echo "ERROR: log ${meta_error_log}" >&2; }; : 114 115.endif 116 117META_COOKIE_TOUCH= 118# some targets need to be .PHONY in non-meta mode 119META_NOPHONY= .PHONY 120# Are we, after all, in meta mode? 121.if ${.MAKE.MODE:Uno:Mmeta*} != "" 122MKDEP_MK = meta.autodep.mk 123 124# we can afford to use cookies to prevent some targets 125# re-running needlessly 126META_COOKIE_TOUCH= touch ${COOKIE.${.TARGET}:U${.OBJDIR}/${.TARGET:T}} 127META_NOPHONY= 128 129# some targets involve old pre-built targets 130# ignore mtime of shell 131# and mtime of makefiles does not matter in meta mode 132.MAKE.META.IGNORE_PATHS += \ 133 ${MAKEFILE} \ 134 ${SHELL} \ 135 ${SYS_MK_DIR} 136 137# if we think we are updating dependencies, 138# then filemon had better be present 139.if ${UPDATE_DEPENDFILE:Uyes:tl} != "no" && !exists(/dev/filemon) 140.error ${.newline}ERROR: The filemon module (/dev/filemon) is not loaded. 141.endif 142 143.if ${.MAKE.LEVEL} == 0 144# make sure dirdeps target exists and do it first 145all: dirdeps .WAIT 146dirdeps: 147.NOPATH: dirdeps 148 149.if defined(ALL_MACHINES) 150# the first .MAIN: is what counts 151# by default dirdeps is all we want at level0 152.MAIN: dirdeps 153# tell dirdeps.mk what we want 154BUILD_AT_LEVEL0 = no 155.endif 156.if ${.TARGETS:Nall} == "" 157# it works best if we do everything via sub-makes 158BUILD_AT_LEVEL0 ?= no 159.endif 160 161.endif 162.endif 163.endif 164