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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2007 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/elisp-common.eclass,v 1.10 2005/05/03 09:20:13 usata Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/elisp-common.eclass,v 1.30 2007/11/17 15:39:35 ulm Exp $
4# 4#
5# Copyright 2007 Christian Faulhammer <opfer@gentoo.org>
5# Copyright 2002-2003 Matthew Kennedy <mkennedy@gentoo.org> 6# Copyright 2002-2004 Matthew Kennedy <mkennedy@gentoo.org>
7# Copyright 2004-2005 Mamoru Komachi <usata@gentoo.org>
6# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com> 8# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com>
9# Copyright 2007 Ulrich Mueller <ulm@gentoo.org>
7# 10#
8# This is not an eclass, but it does provide emacs-related 11# @ECLASS: elisp-common.eclass
9# installation utilities. 12# @MAINTAINER:
13# Feel free to contact the Emacs team through <emacs@gentoo.org> if you have
14# problems, suggestions or questions.
15# @BLURB: Emacs-related installation utilities
16# @DESCRIPTION:
17#
18# Usually you want to use this eclass for (optional) GNU Emacs support of
19# your package. This is NOT for XEmacs!
20#
21# Many of the steps here are sometimes done by the build system of your
22# package (especially compilation), so this is mainly for standalone elisp
23# files you gathered from somewhere else.
24#
25# When relying on the emacs USE flag, you need to add
26#
27# emacs? ( virtual/emacs )
28#
29# to your DEPEND/RDEPEND line and use the functions provided here to bring
30# the files to the correct locations.
31#
32# .SS
33# src_compile() usage:
34#
35# An elisp file is compiled by the elisp-compile() function defined here and
36# simply takes the source files as arguments.
37#
38# elisp-compile *.el || die "elisp-compile failed"
39#
40# In the case of interdependent elisp files, you can use the elisp-comp()
41# function which makes sure all files are loadable.
42#
43# elisp-comp *.el || die "elisp-comp failed"
44#
45# Function elisp-make-autoload-file() can be used to generate a file with
46# autoload definitions for the lisp functions. It takes the output file name
47# (default: "${PN}-autoloads.el") and a list of directories (default: working
48# directory) as its arguments. Use of this function requires that the elisp
49# source files contain magic ";;;###autoload" comments. See the Emacs Lisp
50# Reference Manual (node "Autoload") for a detailed explanation.
51#
52# .SS
53# src_install() usage:
54#
55# The resulting compiled files (.elc) should be put in a subdirectory of
56# /usr/share/emacs/site-lisp/ which is named after the first argument
57# of elisp-install(). The following parameters are the files to be put in
58# that directory. Usually the subdirectory should be ${PN}, you can choose
59# something else, but remember to tell elisp-site-file-install() (see below)
60# the change, as it defaults to ${PN}.
61#
62# elisp-install ${PN} *.el *.elc || die "elisp-install failed"
63#
64# To let the Emacs support be activated by Emacs on startup, you need
65# to provide a site file (shipped in ${FILESDIR}) which contains the startup
66# code (have a look in the documentation of your software). Normally this
67# would look like this:
68#
69# ;;; csv-mode site-lisp configuration
70#
71# (add-to-list 'load-path "@SITELISP@")
72# (add-to-list 'auto-mode-alist '("\\.csv\\'" . csv-mode))
73# (autoload 'csv-mode "csv-mode" "Major mode for csv files." t)
74#
75# If your Emacs support files are installed in a subdirectory of
76# /usr/share/emacs/site-lisp/ (which is recommended), you need to extend
77# Emacs' load-path as shown in the first non-comment.
78# The elisp-site-file-install() function of this eclass will replace
79# "@SITELISP@" by the actual path.
80#
81# The next line tells Emacs to load the mode opening a file ending with
82# ".csv" and load functions depending on the context and needed features.
83# Be careful though. Commands as "load-library" or "require" bloat the
84# editor as they are loaded on every startup. When having a lot of Emacs
85# support files, users may be annoyed by the start-up time. Also avoid
86# keybindings as they might interfere with the user's settings. Give a hint
87# in pkg_postinst(), which should be enough.
88#
89# The naming scheme for this site file is "[0-9][0-9]*-gentoo.el", where the
90# two digits at the beginning define the loading order. So if you depend on
91# another Emacs package, your site file's number must be higher!
92#
93# Best practice is to define a SITEFILE variable in the global scope of your
94# ebuild (right after DEPEND e.g.):
95#
96# SITEFILE=50${PN}-gentoo.el
97#
98# Which is then installed by
99#
100# elisp-site-file-install "${FILESDIR}/${SITEFILE}" || die
101#
102# in src_install(). If your subdirectory is not named ${PN}, give the
103# differing name as second argument.
104#
105# .SS
106# pkg_postinst() / pkg_postrm() usage:
107#
108# After that you need to recreate the start-up file of Emacs after emerging
109# and unmerging by using
110#
111# pkg_postinst() {
112# elisp-site-regen
113# }
114#
115# pkg_postrm() {
116# elisp-site-regen
117# }
118#
119# When having optional Emacs support, you should prepend "use emacs &&" to
120# above calls of elisp-site-regen(). Don't use "has_version virtual/emacs"!
121# When unmerging the state of the emacs USE flag is taken from the package
122# database and not from the environment, so it is no problem when you unset
123# USE=emacs between merge and unmerge of a package.
124#
125# .SS
126# Miscellaneous functions:
127#
128# elisp-emacs-version() outputs the version of the currently active Emacs.
10 129
11ECLASS=elisp-common 130# @ECLASS-VARIABLE: SITELISP
12INHERITED="$INHERITED $ECLASS" 131# @DESCRIPTION:
13 132# Directory where Emacs Lisp files are installed.
14SITELISP=/usr/share/emacs/site-lisp 133SITELISP=/usr/share/emacs/site-lisp
15 134
135# @ECLASS-VARIABLE: SITEFILE
136# @DESCRIPTION:
137# Name of package's site-init file.
138SITEFILE=50${PN}-gentoo.el
139
140EMACS=/usr/bin/emacs
141# The following works for Emacs versions 18--23, don't change it.
142EMACSFLAGS="-batch -q --no-site-file"
143
144# @FUNCTION: elisp-compile
145# @USAGE: <list of elisp files>
146# @DESCRIPTION:
147# Byte-compile Emacs Lisp files.
148
16elisp-compile() { 149elisp-compile() {
17 /usr/bin/emacs --batch -f batch-byte-compile --no-site-file --no-init-file $* 150 einfo "Compiling GNU Emacs Elisp files ..."
151 ${EMACS} ${EMACSFLAGS} -f batch-byte-compile "$@"
18} 152}
153
154# @FUNCTION: elisp-comp
155# @USAGE: <list of elisp files>
156# @DESCRIPTION:
157# Byte-compile interdependent Emacs Lisp files.
158#
159# This function byte-compiles all ".el" files which are part of its
160# arguments, using GNU Emacs, and puts the resulting ".elc" files into the
161# current directory, so disregarding the original directories used in ".el"
162# arguments.
163#
164# This function manages in such a way that all Emacs Lisp files to be
165# compiled are made visible between themselves, in the event they require or
166# load one another.
167
168elisp-comp() {
169 # Copyright 1995 Free Software Foundation, Inc.
170 # François Pinard <pinard@iro.umontreal.ca>, 1995.
171 # Originally taken from GNU autotools.
172
173 [ $# -gt 0 ] || return 1
174
175 einfo "Compiling GNU Emacs Elisp files ..."
176
177 tempdir=elc.$$
178 mkdir ${tempdir}
179 cp "$@" ${tempdir}
180 pushd ${tempdir}
181
182 echo "(add-to-list 'load-path \"../\")" > script
183 ${EMACS} ${EMACSFLAGS} -l script -f batch-byte-compile *.el
184 local ret=$?
185 mv *.elc ..
186
187 popd
188 rm -fr ${tempdir}
189 return ${ret}
190}
191
192# @FUNCTION: elisp-emacs-version
193# @DESCRIPTION:
194# Output version of currently active Emacs.
195
196elisp-emacs-version() {
197 # The following will work for at least versions 18-23.
198 echo "(princ emacs-version)" >"${T}"/emacs-version.el
199 ${EMACS} ${EMACSFLAGS} -l "${T}"/emacs-version.el
200}
201
202# @FUNCTION: elisp-make-autoload-file
203# @USAGE: [output file] [list of directories]
204# @DESCRIPTION:
205# Generate a file with autoload definitions for the lisp functions.
206
207elisp-make-autoload-file() {
208 local f="${1:-${PN}-autoloads.el}"
209 shift
210 einfo "Generating autoload file for GNU Emacs ..."
211
212 sed 's/^FF/\f/' >"${f}" <<-EOF
213 ;;; ${f##*/} --- autoloads for ${P}
214
215 ;;; Commentary:
216 ;; Automatically generated by elisp-common.eclass
217 ;; DO NOT EDIT THIS FILE
218
219 ;;; Code:
220 FF
221 ;; Local Variables:
222 ;; version-control: never
223 ;; no-byte-compile: t
224 ;; no-update-autoloads: t
225 ;; End:
226 ;;; ${f##*/} ends here
227 EOF
228
229 ${EMACS} ${EMACSFLAGS} \
230 --eval "(setq make-backup-files nil)" \
231 --eval "(setq generated-autoload-file (expand-file-name \"${f}\"))" \
232 -f batch-update-autoloads "${@-.}"
233}
234
235# @FUNCTION: elisp-install
236# @USAGE: <subdirectory> <list of files>
237# @DESCRIPTION:
238# Install files in SITELISP directory.
19 239
20elisp-install() { 240elisp-install() {
21 local subdir=$1 241 local subdir="$1"
22 dodir ${SITELISP}/${subdir}
23 insinto ${SITELISP}/${subdir}
24 shift 242 shift
243 einfo "Installing Elisp files for GNU Emacs support ..."
244 ( # subshell to avoid pollution of calling environment
245 insinto "${SITELISP}/${subdir}"
25 doins $@ 246 doins "$@"
247 )
26} 248}
249
250# @FUNCTION: elisp-site-file-install
251# @USAGE: <site-init file> [subdirectory]
252# @DESCRIPTION:
253# Install Emacs site-init file in SITELISP directory.
27 254
28elisp-site-file-install() { 255elisp-site-file-install() {
29 local sitefile=$1 my_pn=${2:-${PN}} 256 local sf="$1" my_pn="${2:-${PN}}"
30 pushd ${S} 257 einfo "Installing site initialisation file for GNU Emacs ..."
31 cp ${sitefile} ${T} 258 cp "${sf}" "${T}"
32 sed -i "s:@SITELISP@:${SITELISP}/${my_pn}:g" ${T}/$(basename ${sitefile}) 259 sed -i "s:@SITELISP@:${SITELISP}/${my_pn}:g" "${T}/$(basename "${sf}")"
260 ( # subshell to avoid pollution of calling environment
33 insinto ${SITELISP} 261 insinto "${SITELISP}"
34 doins ${T}/$(basename ${sitefile}) || die "failed to install site file" 262 doins "${T}/$(basename "${sf}")"
35 popd 263 )
36} 264}
265
266# @FUNCTION: elisp-site-regen
267# @DESCRIPTION:
268# Regenerate site-gentoo.el file.
37 269
38elisp-site-regen() { 270elisp-site-regen() {
271 local sflist sf line
272
273 if [ ! -e "${ROOT}${SITELISP}"/site-gentoo.el ] \
274 && [ ! -e "${ROOT}${SITELISP}"/site-start.el ]; then
275 einfo "Creating default ${SITELISP}/site-start.el ..."
276 cat <<-EOF >"${T}"/site-start.el
277 ;;; site-start.el
278
279 ;;; Commentary:
280 ;; This default site startup file is installed by elisp-common.eclass.
281 ;; You may replace this file by your own site initialisation, or even
282 ;; remove it completely; it will not be recreated.
283
284 ;;; Code:
285 ;; Load site initialisation for Gentoo-installed packages.
286 (require 'site-gentoo)
287
288 ;;; site-start.el ends here
289 EOF
290 fi
291
39 einfo "Regenerating ${SITELISP}/site-gentoo.el ..." 292 einfon "Regenerating ${SITELISP}/site-gentoo.el ..."
40 einfo ""
41 cat <<EOF >${SITELISP}/site-gentoo.el 293 cat <<-EOF >"${T}"/site-gentoo.el
42;;; DO NOT EDIT THIS FILE -- IT IS GENERATED AUTOMATICALLY BY PORTAGE 294 ;;; site-gentoo.el --- site initialisation for Gentoo-installed packages
43;;; -----------------------------------------------------------------
44 295
296 ;;; Commentary:
297 ;; Automatically generated by elisp-common.eclass
298 ;; DO NOT EDIT THIS FILE
299
300 ;;; Code:
45EOF 301 EOF
46 ls ${SITELISP}/[0-9][0-9]*-gentoo.el |sort -n | \ 302
47 while read sf 303 for sf in "${ROOT}${SITELISP}"/[0-9][0-9]*-gentoo.el
48 do 304 do
49 einfo " Adding $(basename $sf) ..." 305 [ -r "${sf}" ] || continue
50 # Great for debugging, too noisy and slow for users though 306 sflist="${sflist} $(basename "${sf}")"
51# echo "(message \"Loading $sf ...\")" >>${SITELISP}/site-start.el
52 cat $sf >>${SITELISP}/site-gentoo.el 307 cat "${sf}" >>"${T}"/site-gentoo.el
53 done 308 done
309
310 cat <<-EOF >>"${T}"/site-gentoo.el
311
312 (provide 'site-gentoo)
313
314 ;; Local Variables:
315 ;; no-byte-compile: t
316 ;; End:
317 ;;; site-gentoo.el ends here
318 EOF
319
320 if cmp -s "${ROOT}${SITELISP}"/site-gentoo.el "${T}"/site-gentoo.el; then
321 # This prevents outputting unnecessary text when there
322 # was actually no change.
323 # A case is a remerge where we have doubled output.
324 echo " no changes."
325 else
326 mv "${T}"/site-gentoo.el "${ROOT}${SITELISP}"/site-gentoo.el
327 [ -f "${T}"/site-start.el ] \
328 && [ ! -e "${ROOT}${SITELISP}"/site-start.el ] \
329 && mv "${T}"/site-start.el "${ROOT}${SITELISP}"/site-start.el
330 echo; einfo
331 for sf in ${sflist}; do
332 einfo " Adding ${sf} ..."
333 done
54 while read line; do einfo "${line}"; done <<EOF 334 while read line; do einfo "${line}"; done <<EOF
55 335
56All site initialization for Gentoo-installed packages is now added to 336All site initialisation for Gentoo-installed packages is added to
57/usr/share/emacs/site-lisp/site-gentoo.el; site-start.el is no longer 337/usr/share/emacs/site-lisp/site-gentoo.el; site-start.el is no longer
58managed by Gentoo. You are responsible for all maintenance of 338managed by Gentoo. You are responsible for all maintenance of
59site-start.el if there is such a file. 339site-start.el if there is such a file.
60 340
61In order for this site initialization to be loaded for all users 341In order for this site initialisation to be loaded for all users
62automatically, as was done previously, you can add a line like this: 342automatically, you can add a line like this:
63 343
64 (load "/usr/share/emacs/site-lisp/site-gentoo") 344 (require 'site-gentoo)
65 345
66to /usr/share/emacs/site-lisp/site-start.el. Alternatively, that line 346to /usr/share/emacs/site-lisp/site-start.el. Alternatively, that line
67can be added by individual users to their initialization files, or for 347can be added by individual users to their initialisation files, or for
68greater flexibility, users can select which of the package-specific 348greater flexibility, users can select which of the package-specific
69initialization files in /usr/share/emacs/site-lisp to load. 349initialisation files in /usr/share/emacs/site-lisp/ to load.
70EOF 350EOF
71 echo 351 echo
72}
73
74# The following Emacs Lisp compilation routine is taken from GNU
75# autotools.
76
77elisp-comp() {
78# Copyright 1995 Free Software Foundation, Inc.
79# François Pinard <pinard@iro.umontreal.ca>, 1995.
80#
81# This program is free software; you can redistribute it and/or modify
82# it under the terms of the GNU General Public License as published by
83# the Free Software Foundation; either version 2, or (at your option)
84# any later version.
85#
86# This program is distributed in the hope that it will be useful,
87# but WITHOUT ANY WARRANTY; without even the implied warranty of
88# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
89# GNU General Public License for more details.
90#
91# You should have received a copy of the GNU General Public License
92# along with this program; if not, write to the Free Software
93# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
94
95# As a special exception to the GNU General Public License, if you
96# distribute this file as part of a program that contains a
97# configuration script generated by Autoconf, you may include it under
98# the same distribution terms that you use for the rest of that program.
99
100# This script byte-compiles all `.el' files which are part of its
101# arguments, using GNU Emacs, and put the resulting `.elc' files into
102# the current directory, so disregarding the original directories used
103# in `.el' arguments.
104#
105# This script manages in such a way that all Emacs LISP files to
106# be compiled are made visible between themselves, in the event
107# they require or load-library one another.
108
109 if test $# = 0; then
110 echo 1>&2 "No files given to $0"
111 exit 1
112 else
113 if test -z "$EMACS" || test "$EMACS" = "t"; then
114 # Value of "t" means we are running in a shell under Emacs.
115 # Just assume Emacs is called "emacs".
116 EMACS=emacs
117 fi
118
119 tempdir=elc.$$
120 mkdir $tempdir
121 cp $* $tempdir
122 cd $tempdir
123
124 echo "(add-to-list 'load-path \"../\")" > script
125 $EMACS -batch -q --no-site-file --no-init-file -l script -f batch-byte-compile *.el
126 mv *.elc ..
127
128 cd ..
129 rm -fr $tempdir
130 fi 352 fi
131} 353}
132
133# Local Variables: ***
134# mode: shell-script ***
135# tab-width: 4 ***
136# indent-tabs-mode: t ***
137# End: ***
138

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