diff options
Diffstat (limited to 'mk/meta.sys.mk')
| -rw-r--r-- | mk/meta.sys.mk | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/mk/meta.sys.mk b/mk/meta.sys.mk new file mode 100644 index 0000000..1707a66 --- /dev/null +++ b/mk/meta.sys.mk @@ -0,0 +1,139 @@ +# $Id: meta.sys.mk,v 1.16 2012/07/03 05:26:00 sjg Exp $ + +# +# @(#) Copyright (c) 2010, Simon J. Gerraty +# +# This file is provided in the hope that it will +# be of use. There is absolutely NO WARRANTY. +# Permission to copy, redistribute or otherwise +# use this file is hereby granted provided that +# the above copyright notice and this notice are +# left intact. +# +# Please send copies of changes and bug-fixes to: +# sjg@crufty.net +# + +# include this if you want to enable meta mode +# for maximum benefit, requires filemon(4) driver. + +.if ${MAKE_VERSION:U0} > 20100901 +.if !target(.ERROR) + + +META_MODE += meta verbose +.MAKE.MODE ?= ${META_MODE} + +.if ${.MAKE.LEVEL} == 0 +_make_mode := ${.MAKE.MODE} ${META_MODE} +.if ${_make_mode:M*read*} != "" || ${_make_mode:M*nofilemon*} != "" +# tell everyone we are not updating Makefile.depend* +UPDATE_DEPENDFILE = NO +.export UPDATE_DEPENDFILE +.endif +.if ${UPDATE_DEPENDFILE:Uyes:tl} == "no" && !exists(/dev/filemon) +# we should not get upset +META_MODE += nofilemon +.export META_MODE +.endif +.endif + +.if !defined(NO_SILENT) +.if ${MAKE_VERSION} > 20110818 +# only be silent when we have a .meta file +META_MODE += silent=yes +.else +.SILENT: +.endif +.endif + +# make defaults .MAKE.DEPENDFILE to .depend +# that won't work for us. +.if ${.MAKE.DEPENDFILE} == ".depend" +.undef .MAKE.DEPENDFILE +.endif + +# if you don't cross build for multiple MACHINEs concurrently, then +# .MAKE.DEPENDFILE = Makefile.depend +# probably makes sense - you can set that in local.sys.mk +.MAKE.DEPENDFILE ?= Makefile.depend.${MACHINE} + +# we use the pseudo machine "host" for the build host. +# this should be taken care of before we get here +.if ${OBJTOP:Ua} == ${HOST_OBJTOP:Ub} +MACHINE = host +.endif + +.if ${.MAKE.LEVEL} == 0 +# it can be handy to know which MACHINE kicked off the build +# for example, if using Makefild.depend for multiple machines, +# allowing only MACHINE0 to update can keep things simple. +MACHINE0 := ${MACHINE} + +.if defined(PYTHON) && exists(${PYTHON}) +# we prefer the python version of this - it is much faster +META2DEPS ?= ${.PARSEDIR}/meta2deps.py +.else +META2DEPS ?= ${.PARSEDIR}/meta2deps.sh +.endif +META2DEPS := ${META2DEPS} +.export META2DEPS +.endif + +MAKE_PRINT_VAR_ON_ERROR += \ + .ERROR_TARGET \ + .ERROR_META_FILE \ + .MAKE.LEVEL \ + MAKEFILE \ + .MAKE.MODE + +.if !defined(SB) && defined(SRCTOP) +SB = ${SRCTOP:H} +.endif +ERROR_LOGDIR ?= ${SB}/error +meta_error_log = ${ERROR_LOGDIR}/meta-${.MAKE.PID}.log + +# we are not interested in make telling us a failure happened elsewhere +.ERROR: _metaError +_metaError: .NOMETA .NOTMAIN + -@[ "${.ERROR_META_FILE}" ] && { \ + grep -q 'failure has been detected in another branch' ${.ERROR_META_FILE} && exit 0; \ + mkdir -p ${meta_error_log:H}; \ + cp ${.ERROR_META_FILE} ${meta_error_log}; \ + echo "ERROR: log ${meta_error_log}" >&2; }; : + +.endif + +# Are we, after all, in meta mode? +.if ${.MAKE.MODE:Mmeta*} != "" +MKDEP = meta.autodep + +.if ${.MAKE.LEVEL} == 0 +# make sure dirdeps target exists and do it first +all: dirdeps .WAIT +dirdeps: +.NOPATH: dirdeps + +.if defined(ALL_MACHINES) +# the first .MAIN: is what counts +# by default dirdeps is all we want at level0 +.MAIN: dirdeps +# tell dirdeps.mk what we want +BUILD_AT_LEVEL0 = no +.endif + +.if ${.MAKE.DEPENDFILE:E} == ${MACHINE} +# it works best if we do everything via sub-makes +BUILD_AT_LEVEL0 ?= no +.endif +BUILD_AT_LEVEL0 ?= yes +.endif + +# if we think we are updating dependencies, +# then filemon had better be present +.if ${UPDATE_DEPENDFILE:Uyes:tl} != "no" && !exists(/dev/filemon) +.error ${.newline}ERROR: The filemon module (/dev/filemon) is not loaded. +.endif + +.endif +.endif |