1*c59c3bf3SSimon J. Gerraty# SPDX-License-Identifier: BSD-2-Clause 2*c59c3bf3SSimon J. Gerraty# 3*c59c3bf3SSimon J. Gerraty# $Id: auto.obj.mk,v 1.17 2024/02/17 17:26:57 sjg Exp $ 43cbdda60SSimon J. Gerraty# 53cbdda60SSimon J. Gerraty# @(#) Copyright (c) 2004, Simon J. Gerraty 63cbdda60SSimon J. Gerraty# 73cbdda60SSimon J. Gerraty# This file is provided in the hope that it will 83cbdda60SSimon J. Gerraty# be of use. There is absolutely NO WARRANTY. 93cbdda60SSimon J. Gerraty# Permission to copy, redistribute or otherwise 103cbdda60SSimon J. Gerraty# use this file is hereby granted provided that 113cbdda60SSimon J. Gerraty# the above copyright notice and this notice are 123cbdda60SSimon J. Gerraty# left intact. 133cbdda60SSimon J. Gerraty# 143cbdda60SSimon J. Gerraty# Please send copies of changes and bug-fixes to: 153cbdda60SSimon J. Gerraty# sjg@crufty.net 163cbdda60SSimon J. Gerraty# 173cbdda60SSimon J. Gerraty 183cbdda60SSimon J. GerratyECHO_TRACE ?= echo 193cbdda60SSimon J. Gerraty 203cbdda60SSimon J. Gerraty.ifndef Mkdirs 213cbdda60SSimon J. Gerraty# A race condition in some versions of mkdir, means that it can bail 223cbdda60SSimon J. Gerraty# if another process made a dir that mkdir expected to. 233cbdda60SSimon J. Gerraty# We repeat the mkdir -p a number of times to try and work around this. 243cbdda60SSimon J. Gerraty# We stop looping as soon as the dir exists. 253cbdda60SSimon J. Gerraty# If we get to the end of the loop, a plain mkdir will issue an error. 263cbdda60SSimon J. GerratyMkdirs= Mkdirs() { \ 273cbdda60SSimon J. Gerraty for d in $$*; do \ 283cbdda60SSimon J. Gerraty for i in 1 2 3 4 5 6; do \ 293cbdda60SSimon J. Gerraty mkdir -p $$d; \ 303cbdda60SSimon J. Gerraty test -d $$d && return 0; \ 313cbdda60SSimon J. Gerraty done > /dev/null 2>&1; \ 323cbdda60SSimon J. Gerraty mkdir $$d || exit $$?; \ 333cbdda60SSimon J. Gerraty done; } 343cbdda60SSimon J. Gerraty.endif 353cbdda60SSimon J. Gerraty 363cbdda60SSimon J. Gerraty# if MKOBJDIRS is set to auto (and NOOBJ isn't defined) do some magic... 373cbdda60SSimon J. Gerraty# This will automatically create objdirs as needed. 383cbdda60SSimon J. Gerraty# Skip it if we are just doing 'clean'. 39db29cad8SSimon J. Gerraty.if ${MK_AUTO_OBJ:Uno} == "yes" 40db29cad8SSimon J. GerratyMKOBJDIRS= auto 41db29cad8SSimon J. Gerraty.endif 423cbdda60SSimon J. Gerraty.if !defined(NOOBJ) && !defined(NO_OBJ) && ${MKOBJDIRS:Uno} == auto 433cbdda60SSimon J. Gerraty# Use __objdir here so it is easier to tweak without impacting 443cbdda60SSimon J. Gerraty# the logic. 456e050540SSimon J. Gerraty.if !empty(MAKEOBJDIRPREFIX) 46e1cee40dSSimon J. Gerraty.if ${.CURDIR:M${MAKEOBJDIRPREFIX}/*} != "" 47e1cee40dSSimon J. Gerraty# we are already in obj tree! 48e1cee40dSSimon J. Gerraty__objdir?= ${.CURDIR} 49e1cee40dSSimon J. Gerraty.endif 504c620fe5SSimon J. Gerraty__objdir?= ${MAKEOBJDIRPREFIX}${.CURDIR} 514c620fe5SSimon J. Gerraty.endif 524c620fe5SSimon J. Gerraty__objdir?= ${MAKEOBJDIR:Uobj} 536e050540SSimon J. Gerraty__objdir:= ${__objdir} 546e050540SSimon J. Gerraty.if ${.OBJDIR:tA} != ${__objdir:tA} 553cbdda60SSimon J. Gerraty# We need to chdir, make the directory if needed 563cbdda60SSimon J. Gerraty.if !exists(${__objdir}/) && \ 573cbdda60SSimon J. Gerraty (${.TARGETS} == "" || ${.TARGETS:Nclean*:N*clean:Ndestroy*} != "") 583cbdda60SSimon J. Gerraty# This will actually make it... 593cbdda60SSimon J. Gerraty__objdir_made != echo ${__objdir}/; umask ${OBJDIR_UMASK:U002}; \ 603cbdda60SSimon J. Gerraty ${ECHO_TRACE} "[Creating objdir ${__objdir}...]" >&2; \ 613cbdda60SSimon J. Gerraty ${Mkdirs}; Mkdirs ${__objdir} 623cbdda60SSimon J. Gerraty.endif 633cbdda60SSimon J. Gerraty# This causes make to use the specified directory as .OBJDIR 643cbdda60SSimon J. Gerraty.OBJDIR: ${__objdir} 6550d2e745SSimon J. Gerraty.if ${.OBJDIR:tA} != ${__objdir:tA} 6650d2e745SSimon J. Gerraty# we did not get what we want - do we care? 6750d2e745SSimon J. Gerraty.if ${__objdir_made:Uno:M${__objdir}/*} != "" 68b46b9039SSimon J. Gerraty# watch out for __objdir being relative path 69b46b9039SSimon J. Gerraty.if !(${__objdir:M/*} == "" && ${.OBJDIR:tA} == ${${.CURDIR}/${__objdir}:L:tA}) 70db29cad8SSimon J. Gerraty.error could not use ${__objdir}: .OBJDIR=${.OBJDIR} 713cbdda60SSimon J. Gerraty.endif 723cbdda60SSimon J. Gerraty.endif 7350d2e745SSimon J. Gerraty# apparently we can live with it 7450d2e745SSimon J. Gerraty# make sure we know what we have 7550d2e745SSimon J. Gerraty.OBJDIR: ${.CURDIR} 7650d2e745SSimon J. Gerraty.endif 773cbdda60SSimon J. Gerraty.endif 78b46b9039SSimon J. Gerraty.endif 79