eclass/xemacs-elisp-common.eclass

# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/xemacs-elisp-common.eclass,v 1.3 2009/06/21 14:53:12 graaff Exp $
#
# Copyright 2007 Hans de Graaff <graaff@gentoo.org>
#
# Based on elisp-common.eclass:
# Copyright 2007 Christian Faulhammer <opfer@gentoo.org>
# Copyright 2002-2004 Matthew Kennedy <mkennedy@gentoo.org>
# Copyright 2004-2005 Mamoru Komachi <usata@gentoo.org>
# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com>
# Copyright 2007 Ulrich Mueller <ulm@gentoo.org>
#
# @ECLASS: xemacs-elisp-common.eclass
# @MAINTAINER:
# xemacs@gentoo.org
# @BLURB: XEmacs-related installation utilities
# @DESCRIPTION:
#
# Usually you want to use this eclass for (optional) XEmacs support of
# your package.  This is NOT for GNU Emacs!
#
# Many of the steps here are sometimes done by the build system of your
# package (especially compilation), so this is mainly for standalone elisp
# files you gathered from somewhere else.
#
# When relying on the xemacs USE flag, you need to add
#
#       xemacs? ( app-editors/xemacs )
#
# to your DEPEND/RDEPEND line and use the functions provided here to bring
# the files to the correct locations.
#
# .SS
# src_compile() usage:
#
# An elisp file is compiled by the xemacs-elisp-compile() function
# defined here and simply takes the source files as arguments.
#
#   xemacs-elisp-compile *.el
#
# In the case of interdependent elisp files, you can use the
# xemacs-elisp-comp() function which makes sure all files are
# loadable.
#
#   xemacs-elisp-comp *.el
#
# Function xemacs-elisp-make-autoload-file() can be used to generate a
# file with autoload definitions for the lisp functions.  It takes a
# list of directories (default: working directory) as its argument.
# Use of this function requires that the elisp source files contain
# magic ";;;###autoload" comments. See the XEmacs Lisp Reference Manual
# (node "Autoload") for a detailed explanation.
#
# .SS
# src_install() usage:
#
# The resulting compiled files (.elc) should be put in a subdirectory
# of /usr/lib/xemacs/site-lisp/ which is named after the first
# argument of xemacs-elisp-install().  The following parameters are
# the files to be put in that directory.  Usually the subdirectory
# should be ${PN}, but you can choose something else.
#
#   xemacs-elisp-install ${PN} *.el *.elc
#


SITEPACKAGE=/usr/lib/xemacs/site-packages
XEMACS=/usr/bin/xemacs
XEMACS_BATCH_CLEAN="${XEMACS} --batch --no-site-file --no-init-file"

# @FUNCTION: xemacs-elisp-compile
# @USAGE: <list of elisp files>
# @DESCRIPTION:
# Byte-compile elisp files with xemacs. This function will die when
# there is a problem compiling the lisp files.
xemacs-elisp-compile () {
	{
		${XEMACS_BATCH_CLEAN} -f batch-byte-compile "$@"
		xemacs-elisp-make-autoload-file "$@"
	} || die "Compile lisp files failed"
}

xemacs-elisp-make-autoload-file () {
	${XEMACS_BATCH_CLEAN} \
		-eval "(setq autoload-package-name \"${PN}\")" \
		-eval "(setq generated-autoload-file \"${S}/auto-autoloads.el\")" \
		-l autoload -f batch-update-autoloads "$@"
}

# @FUNCTION: xemacs-elisp-install
# @USAGE: <subdirectory> <list of files>
# @DESCRIPTION:
# Install elisp source and byte-compiled files. All files are installed
# in site-packages in their own directory, indicated by the first
# argument to the function. This function will die if there is a problem
# installing the list files.

xemacs-elisp-install () {
	local subdir="$1"
	shift
	(  # use sub-shell to avoid possible environment polution
		dodir "${SITEPACKAGE}"/lisp/"${subdir}"
		insinto "${SITEPACKAGE}"/lisp/"${subdir}"
		doins "$@"
	) || die "Installing lisp files failed"
}

# @FUNCTION: xemacs-elisp-comp
# @USAGE: <list of elisp files>
# @DESCRIPTION:
# Byte-compile interdependent XEmacs lisp files.
# Originally taken from GNU autotools, but some configuration options
# removed as they don't make sense with the current status of XEmacs
# in Gentoo.

xemacs-elisp-comp() {
	# Copyright 1995 Free Software Foundation, Inc.
	# François Pinard <pinard@iro.umontreal.ca>, 1995.
	# This script byte-compiles all `.el' files which are part of its
	# arguments, using XEmacs, and put the resulting `.elc' files into
	# the current directory, so disregarding the original directories used
	# in `.el' arguments.
	#
	# This script manages in such a way that all XEmacs LISP files to
	# be compiled are made visible between themselves, in the event
	# they require or load-library one another.

	test $# -gt 0 || return 1

	einfo "Compiling XEmacs Elisp files ..."

	tempdir=elc.$$
	mkdir ${tempdir}
	cp "$@" ${tempdir}
	pushd ${tempdir}

	echo "(add-to-list 'load-path \"../\")" > script
	${XEMACS_BATCH_CLEAN} -l script -f batch-byte-compile *.el
	local ret=$?
	mv *.elc ..

	popd
	rm -fr ${tempdir}
	return ${ret}
}