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Date:      Fri, 8 Mar 2013 01:51:32 +0000 (UTC)
From:      "Simon J. Gerraty" <sjg@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-projects@freebsd.org
Subject:   svn commit: r248025 - projects/bmake/share/mk
Message-ID:  <201303080151.r281pWou000323@svn.freebsd.org>

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Author: sjg
Date: Fri Mar  8 01:51:32 2013
New Revision: 248025
URL: http://svnweb.freebsd.org/changeset/base/248025

Log:
  Control default .MAKE.DEPENDFILE indepentend of .MAKE.DEPENDFILE_PREFERENCE

Modified:
  projects/bmake/share/mk/local.sys.mk
  projects/bmake/share/mk/sys.dependfile.mk

Modified: projects/bmake/share/mk/local.sys.mk
==============================================================================
--- projects/bmake/share/mk/local.sys.mk	Fri Mar  8 01:33:07 2013	(r248024)
+++ projects/bmake/share/mk/local.sys.mk	Fri Mar  8 01:51:32 2013	(r248025)
@@ -168,11 +168,15 @@ STAGED_INCLUDE_DIR= ${STAGE_OBJTOP}/incl
 .include "meta.sys.mk"
 .endif
 
-# most dirs can be satisfied with one Makefile.depend
-.undef .MAKE.DEPENDFILE
+# this is sufficient for most of the tree.
+.MAKE.DEPENDFILE_DEFAULT = ${.MAKE.DEPENDFILE_PREFIX}
+
+# but if we have a machine qualified file it should be used in preference
 .MAKE.DEPENDFILE_PREFERENCE = \
-	${.MAKE.DEPENDFILE_PREFIX} \
-	${.MAKE.DEPENDFILE_PREFIX}.${MACHINE}
+	${.MAKE.DEPENDFILE_PREFIX}.${MACHINE} \
+	${.MAKE.DEPENDFILE_PREFIX}
+
+.undef .MAKE.DEPENDFILE
 
 .include "sys.dependfile.mk"
 

Modified: projects/bmake/share/mk/sys.dependfile.mk
==============================================================================
--- projects/bmake/share/mk/sys.dependfile.mk	Fri Mar  8 01:33:07 2013	(r248024)
+++ projects/bmake/share/mk/sys.dependfile.mk	Fri Mar  8 01:51:32 2013	(r248025)
@@ -1,4 +1,4 @@
-# $Id: sys.dependfile.mk,v 1.3 2012/04/25 15:45:04 sjg Exp $
+# $Id: sys.dependfile.mk,v 1.5 2013/03/08 00:59:21 sjg Exp $
 #
 #	@(#) Copyright (c) 2012, Simon J. Gerraty
 #
@@ -25,16 +25,20 @@
 # All depend file names should start with this
 .MAKE.DEPENDFILE_PREFIX ?= Makefile.depend
 
-# The order of preference: we will use the first one of these we find
-# otherwise the 1st entry will be used by default.
+# The order of preference: we will use the first one of these we find.
+# It usually makes sense to order from most specific to least.
 .MAKE.DEPENDFILE_PREFERENCE ?= \
 	${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.${MACHINE} \
 	${.CURDIR}/${.MAKE.DEPENDFILE_PREFIX}
 
+# Normally the 1st entry is our default choice
+# Another useful default is ${.MAKE.DEPENDFILE_PREFIX}
+.MAKE.DEPENDFILE_DEFAULT ?= ${.MAKE.DEPENDFILE_PREFERENCE:[1]}
+
 _e := ${.MAKE.DEPENDFILE_PREFERENCE:@m@${exists($m):?$m:}@}
 .if !empty(_e)
 .MAKE.DEPENDFILE := ${_e:[1]}
-.elif ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}} != "" && ${.MAKE.DEPENDFILE_PREFERENCE:[1]:E} != ${MACHINE}
+.elif ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}} != "" && ${.MAKE.DEPENDFILE_DEFAULT:E} != ${MACHINE}
 # MACHINE specific depend files are supported, but *not* default.
 # If any already exist, we should follow suit.
 _aml = ${ALL_MACHINE_LIST:Uarm amd64 i386 powerpc:N${MACHINE}} ${MACHINE}
@@ -44,4 +48,4 @@ _e := ${_aml:@MACHINE@${.MAKE.DEPENDFILE
 .MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_PREFERENCE:M*${MACHINE}:[1]}
 .endif
 .endif
-.MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_PREFERENCE:[1]}
+.MAKE.DEPENDFILE ?= ${.MAKE.DEPENDFILE_DEFAULT}



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