# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/app-editors/emacs/emacs-21.4-r12.ebuild,v 1.27 2007/06/25 07:22:42 ulm Exp $

WANT_AUTOCONF="2.1"

inherit flag-o-matic eutils toolchain-funcs autotools

DESCRIPTION="An incredibly powerful, extensible text editor"
HOMEPAGE="http://www.gnu.org/software/emacs"
SRC_URI="mirror://gnu/emacs/${P}a.tar.gz
	mirror://gentoo/emacs-21-patches.tar.bz2
	leim? ( mirror://gnu/emacs/leim-${PV}.tar.gz )"

LICENSE="GPL-2 FDL-1.1"
SLOT="21"
KEYWORDS="alpha amd64 arm hppa ia64 ppc ppc64 sparc x86 ~x86-fbsd"
IUSE="X Xaw3d leim lesstif motif nls nosendmail"

RDEPEND="sys-libs/ncurses
	X? (
		x11-libs/libXext
		x11-libs/libICE
		x11-libs/libSM
		x11-libs/libXmu
		x11-libs/libXpm
		x11-misc/emacs-desktop
		>=media-libs/giflib-4.1.0.1b
		>=media-libs/jpeg-6b-r2
		>=media-libs/tiff-3.5.5-r3
		>=media-libs/libpng-1.2.1
		Xaw3d? ( x11-libs/Xaw3d )
		motif? (
			lesstif? ( x11-libs/lesstif )
			!lesstif? ( >=x11-libs/openmotif-2.1.30 )
		)
	)
	!nosendmail? ( virtual/mta )
	>=app-admin/eselect-emacs-0.7-r1"

DEPEND="${RDEPEND}
	X? ( x11-misc/xbitmaps )"

PROVIDE="virtual/editor"

src_unpack() {
	unpack ${A}
	cd "${S}"

	sed -i \
		-e "s:/usr/lib/crtbegin.o:$(`tc-getCC` -print-file-name=crtbegin.o):g" \
		-e "s:/usr/lib/crtend.o:$(`tc-getCC` -print-file-name=crtend.o):g" \
		"${S}"/src/s/freebsd.h || die "unable to sed freebsd.h settings"

	epatch "${WORKDIR}/emacs-21.3-xorg.patch"
	epatch "${WORKDIR}/emacs-21.3-amd64.patch"
	epatch "${WORKDIR}/emacs-21.3-hppa.patch"
	epatch "${WORKDIR}/emacs-21.2-sh.patch"
	epatch "${WORKDIR}/emacs-21.4-libungif-gif-gentoo.patch"

	if use ppc64; then
		epatch "${WORKDIR}/emacs-21.3-ppc64.patch"
		epatch "${WORKDIR}/emacs-21.4-ppc64-fix-unexelf.patch"
	fi

	epatch "${WORKDIR}/emacs-21.4-autosave-tmp.patch"
	epatch "${WORKDIR}/emacs-21.4-blessmail-build.patch"
	epatch "${WORKDIR}/emacs-21.4-qa.patch"
	epatch "${WORKDIR}/emacs-21.4-Xaw3d-headers.patch"
	epatch "${WORKDIR}/emacs-21.4-freebsd-terminfo.patch"
	epatch "${WORKDIR}/emacs-21.4-oldxmenu-malloc.patch"

	# install emacsclient.1 man page (#165466)
	sed -i -e "s/for page in emacs/& emacsclient/" Makefile.in || die

	# This will need to be updated for X-Compilation
	sed -i -e "s:/usr/lib/\([^ ]*\).o:/usr/$(get_libdir)/\1.o:g" \
		"${S}/src/s/gnu-linux.h" || die
}

src_compile() {
	export SANDBOX_ON=0

	# -fstack-protector gets internal compiler error at xterm.c (bug 33265)
	filter-flags -fstack-protector

	# emacs doesn't handle LDFLAGS properly (bug #77430 and bug #65002)
	unset LDFLAGS

	# ever since GCC 3.2
	replace-flags -O[3-9] -O2

	# -march is known to cause signal 6 on some environment
	filter-flags "-march=*"

	eautoconf

	local myconf
	use nls || myconf="${myconf} --disable-nls"
	if use X ; then
		if use motif && use lesstif; then
			append-ldflags -L/usr/X11R6/lib/lesstif -R/usr/X11R6/lib/lesstif
			append-cppflags -I/usr/X11R6/include/lesstif
		fi
		myconf="${myconf}
			--with-x
			--with-xpm
			--with-jpeg
			--with-tiff
			--with-gif
			--with-png"
		if use Xaw3d ; then
			myconf="${myconf} --with-x-toolkit=athena"
		elif use motif ; then
			myconf="${myconf} --with-x-toolkit=motif"
		else
			# do not build emacs with any toolkit, bug 35300
			myconf="${myconf} --with-x-toolkit=no"
		fi
	else
		myconf="${myconf} --without-x"
	fi
	econf ${myconf} || die
	emake CC="$(tc-getCC)" || die

	einfo "Recompiling patched lisp files..."
	(cd lisp; emake recompile) || die
	emake CC="$(tc-getCC)" || die
}

src_install() {
	einstall || die
	for i in "${D}"/usr/bin/* ; do
		mv ${i} ${i}-emacs-${SLOT} || die "mv ${i} failed"
	done
	mv "${D}"/usr/bin/emacs{-emacs,}-${SLOT} || die "mv emacs failed"
	rm "${D}"/usr/bin/emacs-${PV}-emacs-${SLOT}

	einfo "Fixing info documentation..."
	mkdir "${T}/emacs-${SLOT}"
	mv "${D}/usr/share/info/dir" "${T}"
	for i in "${D}"/usr/share/info/*
	do
		mv ${i} "${T}"/emacs-${SLOT}/${i##*/}.info
	done
	mv "${T}/emacs-${SLOT}" "${D}/usr/share/info"
	mv "${T}/dir" "${D}/usr/share/info/emacs-${SLOT}"

	einfo "Fixing manpages..."
	for m in "${D}"/usr/share/man/man1/* ; do
		mv ${m} ${m%.1}-emacs-${SLOT}.1 || die "mv ${m} failed"
	done

	# avoid collision between slots
	rm "${D}"/usr/share/emacs/site-lisp/subdirs.el

	einfo "Fixing permissions..."
	find "${D}" -perm 664 |xargs chmod -f 644 2>/dev/null
	find "${D}" -type d |xargs chmod -f 755 2>/dev/null

	keepdir /usr/share/emacs/${PV}/leim
	keepdir /usr/share/emacs/site-lisp

	dodoc BUGS ChangeLog README
}

emacs-infodir-rebuild() {
	# Depending on the Portage version, the Info dir file is compressed
	# or removed. It is only rebuilt by Portage if our directory is in
	# INFOPATH, which is not guaranteed. So we rebuild it ourselves.

	local infodir=/usr/share/info/emacs-${SLOT} f
	einfo "Regenerating Info directory index in ${infodir} ..."
	rm -f ${ROOT}${infodir}/dir{,.*}
	for f in ${ROOT}${infodir}/*.info*; do
		[[ ${f##*/} == *[0-9].info* ]] \
			|| install-info --info-dir=${ROOT}${infodir} ${f} &>/dev/null
	done
	echo
}

pkg_postinst() {
	test -f ${ROOT}/usr/share/emacs/site-lisp/subdirs.el ||
		cp ${ROOT}/usr/share/emacs{/${PV},}/site-lisp/subdirs.el

	emacs-infodir-rebuild

	if [[ "$(readlink ${ROOT}/usr/bin/emacs)" == emacs.emacs-${SLOT}* ]]; then
		# transition from pre-eselect revision
		eselect emacs set emacs-${SLOT}
	else
		eselect emacs update --if-unset
	fi

	if use nosendmail; then
		elog "You disabled sendmail support for Emacs. If you later install a MTA"
		elog "then you will need to recompile Emacs.	See Bug #11104."
	fi
	if use X; then
		elog "You need to install some fonts for Emacs. Under monolithic"
		elog "XFree86/Xorg you typically had such fonts installed by default. With"
		elog "modular Xorg, you will have to perform this step yourself on the machine"
		elog  "your X server is running."
		echo
		elog "Installing media-fonts/font-adobe-{75,100}dpi would satisfy basic"
		elog "Emacs requirements under X11."
	fi
}

pkg_postrm() {
	emacs-infodir-rebuild
	eselect emacs update --if-unset
}