1# $FreeBSD$ 2# $Id: meta.sys.mk,v 1.38 2020/08/19 17:51:53 sjg Exp $ 3 4# 5# @(#) Copyright (c) 2010-2020, 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 !defined(MACHINE0) 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 := ${MACHINE} 70.export MACHINE0 71.endif 72 73.if !defined(META2DEPS) 74.if defined(PYTHON) && exists(${PYTHON}) 75# we prefer the python version of this - it is much faster 76META2DEPS ?= ${.PARSEDIR}/meta2deps.py 77.else 78META2DEPS ?= ${.PARSEDIR}/meta2deps.sh 79.endif 80META2DEPS := ${META2DEPS} 81.export META2DEPS 82.endif 83 84MAKE_PRINT_VAR_ON_ERROR += \ 85 .ERROR_TARGET \ 86 .ERROR_META_FILE \ 87 .MAKE.LEVEL \ 88 MAKEFILE \ 89 .MAKE.MODE 90 91.if !defined(SB) && defined(SRCTOP) 92SB = ${SRCTOP:H} 93.endif 94ERROR_LOGDIR ?= ${SB}/error 95meta_error_log = ${ERROR_LOGDIR}/meta-${.MAKE.PID}.log 96 97# we are not interested in make telling us a failure happened elsewhere 98.ERROR: _metaError 99_metaError: .NOMETA .NOTMAIN 100 -@[ "${.ERROR_META_FILE}" ] && { \ 101 grep -q 'failure has been detected in another branch' ${.ERROR_META_FILE} && exit 0; \ 102 mkdir -p ${meta_error_log:H}; \ 103 cp ${.ERROR_META_FILE} ${meta_error_log}; \ 104 echo "ERROR: log ${meta_error_log}" >&2; }; : 105 106.endif 107 108# Are we, after all, in meta mode? 109.if ${.MAKE.MODE:Uno:Mmeta*} != "" 110MKDEP_MK = meta.autodep.mk 111 112.if ${.MAKE.MAKEFILES:M*sys.dependfile.mk} == "" 113# this does all the smarts of setting .MAKE.DEPENDFILE 114.-include <sys.dependfile.mk> 115# check if we got anything sane 116.if ${.MAKE.DEPENDFILE} == ".depend" 117.undef .MAKE.DEPENDFILE 118.endif 119.MAKE.DEPENDFILE ?= Makefile.depend 120.endif 121 122# we can afford to use cookies to prevent some targets 123# re-running needlessly 124META_COOKIE_TOUCH?= touch ${COOKIE.${.TARGET}:U${.OBJDIR}/${.TARGET:T}} 125META_NOPHONY= 126META_NOECHO= : 127 128# some targets involve old pre-built targets 129# ignore mtime of shell 130# and mtime of makefiles does not matter in meta mode 131.MAKE.META.IGNORE_PATHS += \ 132 ${MAKEFILE} \ 133 ${MAKE_SHELL} \ 134 ${SHELL} \ 135 ${SYS_MK_DIR} \ 136 137 138.if ${UPDATE_DEPENDFILE:Uyes:tl} != "no" 139.if ${.MAKEFLAGS:Uno:M-k} != "" 140# make this more obvious 141.warning Setting UPDATE_DEPENDFILE=NO due to -k 142UPDATE_DEPENDFILE= NO 143.export UPDATE_DEPENDFILE 144.elif !exists(/dev/filemon) 145.error ${.newline}ERROR: The filemon module (/dev/filemon) is not loaded. 146.endif 147.endif 148 149.if ${.MAKE.LEVEL} == 0 150# make sure dirdeps target exists and do it first 151all: dirdeps .WAIT 152dirdeps: 153.NOPATH: dirdeps 154 155.if defined(ALL_MACHINES) 156# the first .MAIN: is what counts 157# by default dirdeps is all we want at level0 158.MAIN: dirdeps 159.endif 160 161.endif 162.else 163META_COOKIE_TOUCH= 164# some targets need to be .PHONY in non-meta mode 165META_NOPHONY= .PHONY 166META_NOECHO= echo 167.endif 168.endif 169