1# $FreeBSD$ 2# $Id: meta.sys.mk,v 1.42 2021/12/13 05:50:55 sjg Exp $ 3 4# 5# @(#) Copyright (c) 2010-2021, 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# absolute 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.if ${MAKE_VERSION:U0} > 20130323 && empty(.MAKE.PATH_FILEMON) 35# we do not support filemon 36META_MODE += nofilemon 37MKDEP_MK ?= auto.dep.mk 38.endif 39 40.MAKE.MODE ?= ${META_MODE} 41 42_filemon := ${.MAKE.PATH_FILEMON:U/dev/filemon} 43 44.if empty(UPDATE_DEPENDFILE) 45_make_mode := ${.MAKE.MODE} ${META_MODE} 46.if ${_make_mode:M*read*} != "" || ${_make_mode:M*nofilemon*} != "" 47# tell everyone we are not updating Makefile.depend* 48UPDATE_DEPENDFILE = NO 49.export UPDATE_DEPENDFILE 50.endif 51.if ${_filemon:T:Mfilemon} == "filemon" 52.if ${UPDATE_DEPENDFILE:Uyes:tl} == "no" && !exists(${_filemon}) 53# we should not get upset 54META_MODE += nofilemon 55.export META_MODE 56.endif 57.endif 58.endif 59 60.if !defined(NO_SILENT) 61.if ${MAKE_VERSION} > 20110818 62# only be silent when we have a .meta file 63META_MODE += silent=yes 64.else 65.SILENT: 66.endif 67.endif 68 69# we use the pseudo machine "host" for the build host. 70# this should be taken care of before we get here 71.if ${OBJTOP:Ua} == ${HOST_OBJTOP:Ub} 72MACHINE = host 73.endif 74 75.if !defined(MACHINE0) 76# it can be handy to know which MACHINE kicked off the build 77# for example, if using Makefild.depend for multiple machines, 78# allowing only MACHINE0 to update can keep things simple. 79MACHINE0 := ${MACHINE} 80.export MACHINE0 81.endif 82 83.if !defined(META2DEPS) 84.if defined(PYTHON) && exists(${PYTHON}) 85# we prefer the python version of this - it is much faster 86META2DEPS ?= ${.PARSEDIR}/meta2deps.py 87.else 88META2DEPS ?= ${.PARSEDIR}/meta2deps.sh 89.endif 90META2DEPS := ${META2DEPS} 91.export META2DEPS 92.endif 93 94MAKE_PRINT_VAR_ON_ERROR += \ 95 .ERROR_TARGET \ 96 .ERROR_META_FILE \ 97 .MAKE.LEVEL \ 98 MAKEFILE \ 99 .MAKE.MODE 100 101.if !defined(SB) && defined(SRCTOP) 102SB = ${SRCTOP:H} 103.endif 104ERROR_LOGDIR ?= ${SB}/error 105meta_error_log = ${ERROR_LOGDIR}/meta-${.MAKE.PID}.log 106 107# we are not interested in make telling us a failure happened elsewhere 108.ERROR: _metaError 109_metaError: .NOMETA .NOTMAIN 110 -@[ "${.ERROR_META_FILE}" ] && { \ 111 grep -q 'failure has been detected in another branch' ${.ERROR_META_FILE} && exit 0; \ 112 mkdir -p ${meta_error_log:H}; \ 113 cp ${.ERROR_META_FILE} ${meta_error_log}; \ 114 echo "ERROR: log ${meta_error_log}" >&2; }; : 115 116.endif 117 118# Are we, after all, in meta mode? 119.if ${.MAKE.MODE:Uno:Mmeta*} != "" 120MKDEP_MK ?= meta.autodep.mk 121 122.if ${.MAKE.MAKEFILES:M*sys.dependfile.mk} == "" 123# this does all the smarts of setting .MAKE.DEPENDFILE 124.-include <sys.dependfile.mk> 125# check if we got anything sane 126.if ${.MAKE.DEPENDFILE} == ".depend" 127.undef .MAKE.DEPENDFILE 128.endif 129.MAKE.DEPENDFILE ?= Makefile.depend 130.endif 131 132# we can afford to use cookies to prevent some targets 133# re-running needlessly 134META_COOKIE_TOUCH?= touch ${COOKIE.${.TARGET}:U${.OBJDIR}/${.TARGET:T}} 135META_NOPHONY= 136META_NOECHO= : 137 138# some targets involve old pre-built targets 139# ignore mtime of shell 140# and mtime of makefiles does not matter in meta mode 141.MAKE.META.IGNORE_PATHS += \ 142 ${MAKEFILE} \ 143 ${MAKE_SHELL} \ 144 ${SHELL} \ 145 ${SYS_MK_DIR} \ 146 147 148.if ${UPDATE_DEPENDFILE:Uyes:tl} != "no" 149.if ${.MAKEFLAGS:Uno:M-k} != "" 150# make this more obvious 151.warning Setting UPDATE_DEPENDFILE=NO due to -k 152UPDATE_DEPENDFILE= NO 153.export UPDATE_DEPENDFILE 154.elif ${_filemon:T} == "filemon" && !exists(${_filemon}) 155.error ${.newline}ERROR: The filemon module (${_filemon}) is not loaded. 156.endif 157.endif 158 159.if ${.MAKE.LEVEL} == 0 160.if ${MK_DIRDEPS_BUILD:Uyes} == "yes" 161# make sure dirdeps target exists and do it first 162all: dirdeps .WAIT 163dirdeps: 164.NOPATH: dirdeps 165 166.if defined(ALL_MACHINES) 167# the first .MAIN: is what counts 168# by default dirdeps is all we want at level0 169.MAIN: dirdeps 170.endif 171.endif 172 173.endif 174.else 175META_COOKIE_TOUCH= 176# some targets need to be .PHONY in non-meta mode 177META_NOPHONY= .PHONY 178META_NOECHO= echo 179.endif 180.endif 181