# $NetBSD: Makefile.common,v 1.39 2013/02/23 23:32:19 dholland Exp $
#
# used by editors/emacs/Makefile
# used by editors/emacs-nox11/Makefile

CATEGORIES=	editors
MASTER_SITES=	# empty
DISTFILES=	# empty

MAINTAINER=	dholland@NetBSD.org
COMMENT=	Meta-package for installing the preferred Emacs version

META_PACKAGE=	yes

.include "../../mk/bsd.prefs.mk"

#
# 1. Depend on the right emacs using ${EMACS_TYPE}. We don't have to
# (and in fact shouldn't) depend on the exact version, just *a*
# version. Do *not* include modules.mk as that will get us a tighter
# pattern than we want, as well as other problematic effects.
#
# XXX: it would be better to split modules.mk and share the logic
# that can be shared.
#

MY_EMACS_TYPE?=${EMACS_TYPE}
EMACS_BASE_TYPE=${MY_EMACS_TYPE:S/nox//}
EMACS_MAJOR=${EMACS_BASE_TYPE:S/emacs//}

# Sigh.
.if ${MY_EMACS_TYPE} == "emacs20nox"
MY_EMACS_TYPE:=		emacs20
.endif

.if !empty(MY_EMACS_TYPE:Mxemacs*)
PKG_FAIL_REASON+=	"EMACS_TYPE is xemacs."
# (Set this to avoid crashing out below.)
EMACS_PKGDIR=		../../editors/xemacs
.elif ${MY_EMACS_TYPE} == "emacs25"
EMACS_PKGDIR=		../../editors/emacs-snapshot
.elif !empty(MY_EMACS_TYPE:M*nox)
EMACS_PKGDIR=		../../editors/${EMACS_BASE_TYPE}-nox11
.else
EMACS_PKGDIR=		../../editors/${EMACS_BASE_TYPE}
.endif

DEPENDS+=	${MY_EMACS_TYPE}>=${EMACS_MAJOR}:${EMACS_PKGDIR}

#
# 2. Now it gets gross. Before this meta-package was introduced, the
# emacs packages all had PKGNAME set to "emacs". Now the meta-package
# is called "emacs" and the emacs packages themselves have the emacs
# major version in them. But in order to make updates work properly,
# the version of the package called "emacs" cannot go down. We need to
# set MY_EMACS_VERSION accordingly. The following were the versions at
# the time the renaming was done:
#   emacs20		20.7nb16
#   emacs21		21.4anb26
#   emacs21-nox11	21.4anb13
#   emacs22		22.3nb26
#   emacs22-nox11	22.3nb3
#   emacs23		23.4nb12
#   emacs23-nox11	23.4nb1
#   emacs24		24.2nb6
#   emacs24-nox11	24.2
#   emacs25+		n/a
#
# Set VER to the version from the above table, and REV to the
# PKGREVISION value.
#

.if ${MY_EMACS_TYPE} == "emacs20"
VER=	20.7
REV=	16
.elif ${MY_EMACS_TYPE} == "emacs21"
VER=	21.4
REV=	26
.elif ${MY_EMACS_TYPE} == "emacs21nox"
VER=	21.4
REV=	13
.elif ${MY_EMACS_TYPE} == "emacs22"
VER=	22.3
REV=	26
.elif ${MY_EMACS_TYPE} == "emacs22nox"
VER=	22.3
REV=	3
.elif ${MY_EMACS_TYPE} == "emacs23"
VER=	23.4
REV=	12
.elif ${MY_EMACS_TYPE} == "emacs23nox"
VER=	23.4
REV=	1
.elif ${MY_EMACS_TYPE} == "emacs24"
VER=	24.2
REV=	6
.elif ${MY_EMACS_TYPE} == "emacs24nox"
VER=	24.2
REV=	0
.else
VER=	${_EMACS_VERSION_MAJOR}
REV=	0
.endif

#
# Get the actual version from version.mk.
#

.include "${EMACS_PKGDIR}/version.mk"

MY_EMACS_VERSION=	${_EMACS_VERSION_MAJOR}.${_EMACS_VERSION_MINOR}
.if defined(_EMACS_VERSION_MICRO)
MY_EMACS_VERSION:=	${MY_EMACS_VERSION}.${_EMACS_VERSION_MICRO}
.endif

#
# Compute PKGREVISION.
#
# If we are on the same version as VER, we need PKGREVISION to be at
# least REV + 1. Otherwise, it can start at 0.
#
# Use MYPKGREVISION (defined at the top of this file) to bump the
# version if that should become necessary.
#

.if ${MY_EMACS_VERSION} != ${VER}
PKGREVISION=	${MYPKGREVISION}
.else
PKGREVISION!=expr 1 + ${REV} + ${MYPKGREVISION}
.endif

# This doesn't work; fortunately it appears to be unnecessary.
#
#.if ${PKGREVISION} == "0"
#.unset PKGREVISION
#.endif

.include "../../mk/bsd.pkg.mk"