From 405c61d80251d8e80401aed2264d4bede218cb22 Mon Sep 17 00:00:00 2001
From: joerg <joerg>
Date: Fri, 20 Mar 2009 19:23:50 +0000
Subject: Simply and speed up buildlink3.mk files and processing. This changes
 the buildlink3.mk files to use an include guard for the recursive include.
 The use of BUILDLINK_DEPTH, BUILDLINK_DEPENDS, BUILDLINK_PACKAGES and
 BUILDLINK_ORDER is handled by a single new variable BUILDLINK_TREE. Each
 buildlink3.mk file adds a pair of enter/exit marker, which can be used to
 reconstruct the tree and to determine first level includes. Avoiding := for
 large variables (BUILDLINK_ORDER) speeds up parse time as += has linear
 complexity. The include guard reduces system time by avoiding reading files
 over and over again. For complex packages this reduces both %user and %sys
 time to half of the former time.

---
 editors/emacs21-nox11/buildlink3.mk | 19 ++++++-------------
 1 file changed, 6 insertions(+), 13 deletions(-)

(limited to 'editors/emacs21-nox11')

diff --git a/editors/emacs21-nox11/buildlink3.mk b/editors/emacs21-nox11/buildlink3.mk
index 4d203b93838..29efa0e0e24 100644
--- a/editors/emacs21-nox11/buildlink3.mk
+++ b/editors/emacs21-nox11/buildlink3.mk
@@ -1,23 +1,16 @@
-# $NetBSD: buildlink3.mk,v 1.2 2008/10/11 09:31:56 uebayasi Exp $
+# $NetBSD: buildlink3.mk,v 1.3 2009/03/20 19:24:31 joerg Exp $
 #
 
-BUILDLINK_DEPTH:=	${BUILDLINK_DEPTH}+
-EMACS_NOX11_BUILDLINK3_MK:=	${EMACS_NOX11_BUILDLINK3_MK}+
+BUILDLINK_TREE+=	emacs-nox11
 
-.if ${BUILDLINK_DEPTH} == "+"
-BUILDLINK_DEPENDS+=	emacs-nox11
-.endif
+.if !defined(EMACS_NOX11_BUILDLINK3_MK)
+EMACS_NOX11_BUILDLINK3_MK:=
 
-BUILDLINK_PACKAGES:=	${BUILDLINK_PACKAGES:Nemacs-nox11}
-BUILDLINK_PACKAGES+=	emacs-nox11
-BUILDLINK_ORDER:=	${BUILDLINK_ORDER} ${BUILDLINK_DEPTH}emacs-nox11
-
-.if ${EMACS_NOX11_BUILDLINK3_MK} == "+"
 .include "../../editors/emacs/modules.mk"
 BUILDLINK_API_DEPENDS.emacs-nox11+=	${_EMACS_REQD}
 BUILDLINK_PKGSRCDIR.emacs-nox11?=	${_EMACS_PKGDIR}
-.endif	# EMACS_NOX11_BUILDLINK3_MK
 
 BUILDLINK_CONTENTS_FILTER.emacs-nox11=	${EGREP} '.*\.el$$|.*\.elc$$'
+.endif # EMACS_NOX11_BUILDLINK3_MK
 
-BUILDLINK_DEPTH:=	${BUILDLINK_DEPTH:S/+$//}
+BUILDLINK_TREE+=	-emacs-nox11
-- 
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