1# $FreeBSD$ 2# $Id: meta.sys.mk,v 1.32 2017/06/11 03:24:04 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# 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.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# we use the pseudo machine "host" for the build host. 60# this should be taken care of before we get here 61.if ${OBJTOP:Ua} == ${HOST_OBJTOP:Ub} 62MACHINE = host 63.endif 64 65.if ${.MAKE.LEVEL} == 0 66# it can be handy to know which MACHINE kicked off the build 67# for example, if using Makefild.depend for multiple machines, 68# allowing only MACHINE0 to update can keep things simple. 69MACHINE0 := ${MACHINE} 70.export MACHINE0 71 72.if defined(PYTHON) && exists(${PYTHON}) 73# we prefer the python version of this - it is much faster 74META2DEPS ?= ${.PARSEDIR}/meta2deps.py 75.else 76META2DEPS ?= ${.PARSEDIR}/meta2deps.sh 77.endif 78META2DEPS := ${META2DEPS} 79.export META2DEPS 80.endif 81 82MAKE_PRINT_VAR_ON_ERROR += \ 83 .ERROR_TARGET \ 84 .ERROR_META_FILE \ 85 .MAKE.LEVEL \ 86 MAKEFILE \ 87 .MAKE.MODE 88 89.if !defined(SB) && defined(SRCTOP) 90SB = ${SRCTOP:H} 91.endif 92ERROR_LOGDIR ?= ${SB}/error 93meta_error_log = ${ERROR_LOGDIR}/meta-${.MAKE.PID}.log 94 95# we are not interested in make telling us a failure happened elsewhere 96.ERROR: _metaError 97_metaError: .NOMETA .NOTMAIN 98 -@[ "${.ERROR_META_FILE}" ] && { \ 99 grep -q 'failure has been detected in another branch' ${.ERROR_META_FILE} && exit 0; \ 100 mkdir -p ${meta_error_log:H}; \ 101 cp ${.ERROR_META_FILE} ${meta_error_log}; \ 102 echo "ERROR: log ${meta_error_log}" >&2; }; : 103 104.endif 105 106# Are we, after all, in meta mode? 107.if ${.MAKE.MODE:Uno:Mmeta*} != "" 108MKDEP_MK = meta.autodep.mk 109 110.if ${.MAKE.MAKEFILES:M*sys.dependfile.mk} == "" 111# this does all the smarts of setting .MAKE.DEPENDFILE 112.-include <sys.dependfile.mk> 113# check if we got anything sane 114.if ${.MAKE.DEPENDFILE} == ".depend" 115.undef .MAKE.DEPENDFILE 116.endif 117.MAKE.DEPENDFILE ?= Makefile.depend 118.endif 119 120# we can afford to use cookies to prevent some targets 121# re-running needlessly 122META_COOKIE_TOUCH?= touch ${COOKIE.${.TARGET}:U${.OBJDIR}/${.TARGET:T}} 123META_NOPHONY= 124META_NOECHO= : 125 126# some targets involve old pre-built targets 127# ignore mtime of shell 128# and mtime of makefiles does not matter in meta mode 129.MAKE.META.IGNORE_PATHS += \ 130 ${MAKEFILE} \ 131 ${SHELL} \ 132 ${SYS_MK_DIR} 133 134.if ${UPDATE_DEPENDFILE:Uyes:tl} != "no" 135.if ${.MAKEFLAGS:Uno:M-k} != "" 136# make this more obvious 137.warning Setting UPDATE_DEPENDFILE=NO due to -k 138UPDATE_DEPENDFILE= NO 139.export UPDATE_DEPENDFILE 140.elif !exists(/dev/filemon) 141.error ${.newline}ERROR: The filemon module (/dev/filemon) is not loaded. 142.endif 143.endif 144 145.if ${.MAKE.LEVEL} == 0 146# make sure dirdeps target exists and do it first 147all: dirdeps .WAIT 148dirdeps: 149.NOPATH: dirdeps 150 151.if defined(ALL_MACHINES) 152# the first .MAIN: is what counts 153# by default dirdeps is all we want at level0 154.MAIN: dirdeps 155# tell dirdeps.mk what we want 156BUILD_AT_LEVEL0 = no 157.endif 158.if ${.TARGETS:Nall} == "" 159# it works best if we do everything via sub-makes 160BUILD_AT_LEVEL0 ?= no 161.endif 162 163.endif 164.else 165META_COOKIE_TOUCH= 166# some targets need to be .PHONY in non-meta mode 167META_NOPHONY= .PHONY 168META_NOECHO= echo 169.endif 170.endif 171