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Diffstat (limited to 'contrib/bmake/mk/auto.obj.mk')
| -rw-r--r-- | contrib/bmake/mk/auto.obj.mk | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/contrib/bmake/mk/auto.obj.mk b/contrib/bmake/mk/auto.obj.mk new file mode 100644 index 0000000..adccd4b --- /dev/null +++ b/contrib/bmake/mk/auto.obj.mk @@ -0,0 +1,56 @@ +# $Id: auto.obj.mk,v 1.8 2011/08/08 17:35:20 sjg Exp $ +# +# @(#) Copyright (c) 2004, 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 +# + +ECHO_TRACE ?= echo + +.ifndef Mkdirs +# A race condition in some versions of mkdir, means that it can bail +# if another process made a dir that mkdir expected to. +# We repeat the mkdir -p a number of times to try and work around this. +# We stop looping as soon as the dir exists. +# If we get to the end of the loop, a plain mkdir will issue an error. +Mkdirs= Mkdirs() { \ + for d in $$*; do \ + for i in 1 2 3 4 5 6; do \ + mkdir -p $$d; \ + test -d $$d && return 0; \ + done > /dev/null 2>&1; \ + mkdir $$d || exit $$?; \ + done; } +.endif + +# if MKOBJDIRS is set to auto (and NOOBJ isn't defined) do some magic... +# This will automatically create objdirs as needed. +# Skip it if we are just doing 'clean'. +.if !defined(NOOBJ) && !defined(NO_OBJ) && ${MKOBJDIRS:Uno} == auto +# Use __objdir here so it is easier to tweak without impacting +# the logic. +__objdir?= ${MAKEOBJDIR} +.if ${.OBJDIR} != ${__objdir} +# We need to chdir, make the directory if needed +.if !exists(${__objdir}/) && \ + (${.TARGETS} == "" || ${.TARGETS:Nclean*:N*clean:Ndestroy*} != "") +# This will actually make it... +__objdir_made != echo ${__objdir}/; umask ${OBJDIR_UMASK:U002}; \ + ${ECHO_TRACE} "[Creating objdir ${__objdir}...]" >&2; \ + ${Mkdirs}; Mkdirs ${__objdir} +.endif +# This causes make to use the specified directory as .OBJDIR +.OBJDIR: ${__objdir} +.if ${.OBJDIR} != ${__objdir} && ${__objdir_made:Uno:M${__objdir}/*} != "" +.error could not use ${__objdir} +.endif +.endif +.endif |
