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1# Copyright 1999-2007 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 1.20 2007/04/29 12:59:39 ulm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/elisp-common.eclass,v 1.31 2007/12/01 15:35:02 ulm Exp $
4# 4#
5# Copyright 2007 Christian Faulhammer <opfer@gentoo.org> 5# Copyright 2007 Christian Faulhammer <opfer@gentoo.org>
6# Copyright 2002-2007 Matthew Kennedy <mkennedy@gentoo.org> 6# Copyright 2002-2004 Matthew Kennedy <mkennedy@gentoo.org>
7# Copyright 2004-2005 Mamoru Komachi <usata@gentoo.org>
7# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com> 8# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com>
8# Copyright 2007 Ulrich Mueller <ulm@gentoo.org> 9# Copyright 2007 Ulrich Mueller <ulm@gentoo.org>
9# 10#
10# This is not a real eclass, but it does provide Emacs-related installation 11# @ECLASS: elisp-common.eclass
11# utilities. 12# @MAINTAINER:
12# 13# Feel free to contact the Emacs team through <emacs@gentoo.org> if you have
13# USAGE: 14# problems, suggestions or questions.
15# @BLURB: Emacs-related installation utilities
16# @DESCRIPTION:
14# 17#
15# Usually you want to use this eclass for (optional) GNU Emacs support of 18# Usually you want to use this eclass for (optional) GNU Emacs support of
16# your package. This is NOT for XEmacs! 19# your package. This is NOT for XEmacs!
20#
17# Many of the steps here are sometimes done by the build system of your 21# Many of the steps here are sometimes done by the build system of your
18# package (especially compilation), so this is mainly for standalone elisp 22# package (especially compilation), so this is mainly for standalone elisp
19# files you gathered from somewhere else. 23# files you gathered from somewhere else.
24#
20# When relying on the emacs USE flag, you need to add 25# When relying on the emacs USE flag, you need to add
21# 26#
22# emacs? ( virtual/emacs ) 27# emacs? ( virtual/emacs )
23# 28#
24# to your DEPEND/RDEPEND line and use the functions provided here to bring 29# to your DEPEND/RDEPEND line and use the functions provided here to bring
25# the files to the correct locations. 30# the files to the correct locations.
26# 31#
32# .SS
27# src_compile() usage: 33# src_compile() usage:
28# --------------------
29# 34#
30# An elisp file is compiled by the elisp-compile() function defined here and 35# An elisp file is compiled by the elisp-compile() function defined here and
31# simply takes the source files as arguments. In the case of interdependent 36# simply takes the source files as arguments.
32# elisp files, you can use the elisp-comp() function which makes sure all
33# files are loadable.
34# 37#
35# elisp-compile *.el || die "elisp-compile failed!" 38# elisp-compile *.el || die "elisp-compile failed"
36# or 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#
37# elisp-comp *.el || die "elisp-comp failed!" 43# elisp-comp *.el || die "elisp-comp failed"
38# 44#
39# Function elisp-make-autoload-file() can be used to generate a file with 45# Function elisp-make-autoload-file() can be used to generate a file with
40# autoload definitions for the lisp functions. It takes the output file name 46# autoload definitions for the lisp functions. It takes the output file name
41# (default: "${PN}-autoloads.el") and a list of directories (default: working 47# (default: "${PN}-autoloads.el") and a list of directories (default: working
42# directory) as its arguments. Use of this function requires that the elisp 48# directory) as its arguments. Use of this function requires that the elisp
43# source files contain magic ";;;###autoload" comments. See the Emacs Lisp 49# source files contain magic ";;;###autoload" comments. See the Emacs Lisp
44# Reference Manual (node "Autoload") for a detailed explanation. 50# Reference Manual (node "Autoload") for a detailed explanation.
45# 51#
52# .SS
46# src_install() usage: 53# src_install() usage:
47# --------------------
48# 54#
49# The resulting compiled files (.elc) should be put in a subdirectory of 55# The resulting compiled files (.elc) should be put in a subdirectory of
50# /usr/share/emacs/site-lisp/ which is named after the first argument 56# /usr/share/emacs/site-lisp/ which is named after the first argument
51# of elisp-install(). The following parameters are the files to be put in 57# of elisp-install(). The following parameters are the files to be put in
52# that directory. Usually the subdirectory should be ${PN}, you can choose 58# that directory. Usually the subdirectory should be ${PN}, you can choose
53# something else, but remember to tell elisp-site-file-install() (see below) 59# something else, but remember to tell elisp-site-file-install() (see below)
54# the change, as it defaults to ${PN}. 60# the change, as it defaults to ${PN}.
55# 61#
56# elisp-install ${PN} *.elc *.el || die "elisp-install failed!" 62# elisp-install ${PN} *.el *.elc || die "elisp-install failed"
57# 63#
58# To let the Emacs support be activated by Emacs on startup, you need 64# To let the Emacs support be activated by Emacs on startup, you need
59# to provide a site file (shipped in ${FILESDIR}) which contains the startup 65# to provide a site file (shipped in ${FILESDIR}) which contains the startup
60# code (have a look in the documentation of your software). Normally this 66# code (have a look in the documentation of your software). Normally this
61# would look like this: 67# would look like this:
62# 68#
63# ;;; csv-mode site-lisp configuration 69# ;;; csv-mode site-lisp configuration
64# 70#
65# (add-to-list 'load-path "@SITELISP@") 71# (add-to-list 'load-path "@SITELISP@")
66# (add-to-list 'auto-mode-alist '("\\.csv\\'" . csv-mode)) 72# (add-to-list 'auto-mode-alist '("\\.csv\\'" . csv-mode))
67# (autoload 'csv-mode "csv-mode" "Major mode for editing csv files." t) 73# (autoload 'csv-mode "csv-mode" "Major mode for csv files." t)
68# 74#
69# If your Emacs support files are installed in a subdirectory of 75# If your Emacs support files are installed in a subdirectory of
70# /usr/share/emacs/site-lisp/ (which is recommended if more than one file is 76# /usr/share/emacs/site-lisp/ (which is recommended), you need to extend
71# installed), you need to extend Emacs' load-path as shown in the first 77# Emacs' load-path as shown in the first non-comment.
72# non-comment. The elisp-site-file-install() function of this eclass will 78# The elisp-site-file-install() function of this eclass will replace
73# replace "@SITELISP@" by the actual path. 79# "@SITELISP@" by the actual path.
80#
74# The next line tells Emacs to load the mode opening a file ending with 81# The next line tells Emacs to load the mode opening a file ending with
75# ".csv" and load functions depending on the context and needed features. 82# ".csv" and load functions depending on the context and needed features.
76# Be careful though. Commands as "load-library" or "require" bloat the 83# Be careful though. Commands as "load-library" or "require" bloat the
77# editor as they are loaded on every startup. When having a lot of Emacs 84# editor as they are loaded on every startup. When having a lot of Emacs
78# support files, users may be annoyed by the start-up time. Also avoid 85# support files, users may be annoyed by the start-up time. Also avoid
79# keybindings as they might interfere with the user's settings. Give a hint 86# keybindings as they might interfere with the user's settings. Give a hint
80# in pkg_postinst(), which should be enough. 87# in pkg_postinst(), which should be enough.
88#
81# The naming scheme for this site file is "[0-9][0-9]*-gentoo.el", where the 89# The naming scheme for this site file is "[0-9][0-9]*-gentoo.el", where the
82# two digits at the beginning define the loading order. So if you depend on 90# two digits at the beginning define the loading order. So if you depend on
83# another Emacs package, your site file's number must be higher! 91# another Emacs package, your site file's number must be higher!
92#
84# Best practice is to define a SITEFILE variable in the global scope of your 93# Best practice is to define a SITEFILE variable in the global scope of your
85# ebuild (right after DEPEND e.g.): 94# ebuild (right after DEPEND e.g.):
86# 95#
87# SITEFILE=50${PN}-gentoo.el 96# SITEFILE=50${PN}-gentoo.el
88# 97#
89# Which is then installed by 98# Which is then installed by
90# 99#
91# elisp-site-file-install "${FILESDIR}/${SITEFILE}" 100# elisp-site-file-install "${FILESDIR}/${SITEFILE}" || die
92# 101#
93# in src_install(). If your subdirectory is not named ${PN}, give the 102# in src_install(). If your subdirectory is not named ${PN}, give the
94# differing name as second argument. 103# differing name as second argument.
95# 104#
105# .SS
96# pkg_postinst() / pkg_postrm() usage: 106# pkg_postinst() / pkg_postrm() usage:
97# ------------------------------------
98# 107#
99# After that you need to recreate the start-up file of Emacs after emerging 108# After that you need to recreate the start-up file of Emacs after emerging
100# and unmerging by using 109# and unmerging by using
101# 110#
102# pkg_postinst() { 111# pkg_postinst() {
103# elisp-site-regen 112# elisp-site-regen
104# } 113# }
114#
105# pkg_postrm() { 115# pkg_postrm() {
106# elisp-site-regen 116# elisp-site-regen
107# } 117# }
108# 118#
109# As always: Feel free to contact Emacs team through emacs@gentoo.org if you 119# When having optional Emacs support, you should prepend "use emacs &&" to
110# have problems, suggestions or questions. 120# above calls of elisp-site-regen(). Don't use "has_version virtual/emacs"!
121# When unmerging the state of the emacs USE flag is taken from the package
122# database and not from the environment, so it is no problem when you unset
123# USE=emacs between merge and unmerge of a package.
124#
125# .SS
126# Miscellaneous functions:
127#
128# elisp-emacs-version() outputs the version of the currently active Emacs.
111 129
130# @ECLASS-VARIABLE: SITELISP
131# @DESCRIPTION:
132# Directory where packages install Emacs Lisp files.
112SITELISP=/usr/share/emacs/site-lisp 133SITELISP=/usr/share/emacs/site-lisp
113 134
135# Directory where packages install miscellaneous (not Lisp) files.
136SITEETC=/usr/share/emacs/etc
137
138# @ECLASS-VARIABLE: SITEFILE
139# @DESCRIPTION:
140# Name of package's site-init file.
141SITEFILE=50${PN}-gentoo.el
142
143EMACS=/usr/bin/emacs
144# The following works for Emacs versions 18--23, don't change it.
145EMACSFLAGS="-batch -q --no-site-file"
146
147# @FUNCTION: elisp-compile
148# @USAGE: <list of elisp files>
149# @DESCRIPTION:
150# Byte-compile Emacs Lisp files.
151
114elisp-compile() { 152elisp-compile() {
115 /usr/bin/emacs --batch -f batch-byte-compile --no-site-file --no-init-file $* 153 einfo "Compiling GNU Emacs Elisp files ..."
154 ${EMACS} ${EMACSFLAGS} -f batch-byte-compile "$@"
116} 155}
117 156
157# @FUNCTION: elisp-comp
158# @USAGE: <list of elisp files>
159# @DESCRIPTION:
160# Byte-compile interdependent Emacs Lisp files.
161#
162# This function byte-compiles all ".el" files which are part of its
163# arguments, using GNU Emacs, and puts the resulting ".elc" files into the
164# current directory, so disregarding the original directories used in ".el"
165# arguments.
166#
167# This function manages in such a way that all Emacs Lisp files to be
168# compiled are made visible between themselves, in the event they require or
169# load one another.
170
171elisp-comp() {
172 # Copyright 1995 Free Software Foundation, Inc.
173 # Fran├žois Pinard <pinard@iro.umontreal.ca>, 1995.
174 # Originally taken from GNU autotools.
175
176 [ $# -gt 0 ] || return 1
177
178 einfo "Compiling GNU Emacs Elisp files ..."
179
180 tempdir=elc.$$
181 mkdir ${tempdir}
182 cp "$@" ${tempdir}
183 pushd ${tempdir}
184
185 echo "(add-to-list 'load-path \"../\")" > script
186 ${EMACS} ${EMACSFLAGS} -l script -f batch-byte-compile *.el
187 local ret=$?
188 mv *.elc ..
189
190 popd
191 rm -fr ${tempdir}
192 return ${ret}
193}
194
195# @FUNCTION: elisp-emacs-version
196# @DESCRIPTION:
197# Output version of currently active Emacs.
198
199elisp-emacs-version() {
200 # The following will work for at least versions 18-23.
201 echo "(princ emacs-version)" >"${T}"/emacs-version.el
202 ${EMACS} ${EMACSFLAGS} -l "${T}"/emacs-version.el
203}
204
205# @FUNCTION: elisp-make-autoload-file
206# @USAGE: [output file] [list of directories]
207# @DESCRIPTION:
208# Generate a file with autoload definitions for the lisp functions.
209
118elisp-make-autoload-file () { 210elisp-make-autoload-file() {
119 local f="${1:-${PN}-autoloads.el}" 211 local f="${1:-${PN}-autoloads.el}"
120 shift 212 shift
121 echo >"${f}" 213 einfo "Generating autoload file for GNU Emacs ..."
122 emacs --batch -q --no-site-file \ 214
215 sed 's/^FF/\f/' >"${f}" <<-EOF
216 ;;; ${f##*/} --- autoloads for ${P}
217
218 ;;; Commentary:
219 ;; Automatically generated by elisp-common.eclass
220 ;; DO NOT EDIT THIS FILE
221
222 ;;; Code:
223 FF
224 ;; Local Variables:
225 ;; version-control: never
226 ;; no-byte-compile: t
227 ;; no-update-autoloads: t
228 ;; End:
229 ;;; ${f##*/} ends here
230 EOF
231
232 ${EMACS} ${EMACSFLAGS} \
123 --eval "(setq make-backup-files nil)" \ 233 --eval "(setq make-backup-files nil)" \
124 --eval "(setq generated-autoload-file (expand-file-name \"${f}\"))" \ 234 --eval "(setq generated-autoload-file (expand-file-name \"${f}\"))" \
125 -f batch-update-autoloads "${@-.}" 235 -f batch-update-autoloads "${@-.}"
126} 236}
127 237
238# @FUNCTION: elisp-install
239# @USAGE: <subdirectory> <list of files>
240# @DESCRIPTION:
241# Install files in SITELISP directory.
242
128elisp-install() { 243elisp-install() {
129 local subdir=$1 244 local subdir="$1"
130 dodir "${SITELISP}/${subdir}"
131 insinto "${SITELISP}/${subdir}"
132 shift 245 shift
246 einfo "Installing Elisp files for GNU Emacs support ..."
247 ( # subshell to avoid pollution of calling environment
248 insinto "${SITELISP}/${subdir}"
133 doins $@ 249 doins "$@"
250 )
134} 251}
252
253# @FUNCTION: elisp-site-file-install
254# @USAGE: <site-init file> [subdirectory]
255# @DESCRIPTION:
256# Install Emacs site-init file in SITELISP directory.
135 257
136elisp-site-file-install() { 258elisp-site-file-install() {
137 local sitefile=$1 my_pn=${2:-${PN}} 259 local sf="$1" my_pn="${2:-${PN}}"
138 pushd "${S}" 260 einfo "Installing site initialisation file for GNU Emacs ..."
139 cp ${sitefile} "${T}" 261 cp "${sf}" "${T}"
140 sed -i "s:@SITELISP@:${SITELISP}/${my_pn}:g" "${T}/$(basename ${sitefile})" 262 sed -i -e "s:@SITELISP@:${SITELISP}/${my_pn}:g" \
263 -e "s:@SITEETC@:${SITEETC}/${my_pn}:g" "${T}/${sf##*/}"
264 ( # subshell to avoid pollution of calling environment
141 insinto ${SITELISP} 265 insinto "${SITELISP}"
142 doins "${T}/$(basename ${sitefile})" || die "failed to install site file" 266 doins "${T}/${sf##*/}"
143 popd 267 )
144} 268}
269
270# @FUNCTION: elisp-site-regen
271# @DESCRIPTION:
272# Regenerate site-gentoo.el file.
145 273
146elisp-site-regen() { 274elisp-site-regen() {
275 local sflist sf line
276
277 if [ ! -e "${ROOT}${SITELISP}"/site-gentoo.el ] \
278 && [ ! -e "${ROOT}${SITELISP}"/site-start.el ]; then
279 einfo "Creating default ${SITELISP}/site-start.el ..."
280 cat <<-EOF >"${T}"/site-start.el
281 ;;; site-start.el
282
283 ;;; Commentary:
284 ;; This default site startup file is installed by elisp-common.eclass.
285 ;; You may replace this file by your own site initialisation, or even
286 ;; remove it completely; it will not be recreated.
287
288 ;;; Code:
289 ;; Load site initialisation for Gentoo-installed packages.
290 (require 'site-gentoo)
291
292 ;;; site-start.el ends here
293 EOF
294 fi
295
147 einfo "Regenerating ${SITELISP}/site-gentoo.el ..." 296 einfon "Regenerating ${SITELISP}/site-gentoo.el ..."
148 einfo ""
149 cat <<EOF >${ROOT}${SITELISP}/site-gentoo.el 297 cat <<-EOF >"${T}"/site-gentoo.el
150;;; DO NOT EDIT THIS FILE -- IT IS GENERATED AUTOMATICALLY BY PORTAGE 298 ;;; site-gentoo.el --- site initialisation for Gentoo-installed packages
151;;; -----------------------------------------------------------------
152 299
300 ;;; Commentary:
301 ;; Automatically generated by elisp-common.eclass
302 ;; DO NOT EDIT THIS FILE
303
304 ;;; Code:
153EOF 305 EOF
306
154 for sf in ${ROOT}${SITELISP}/[0-9][0-9]*-gentoo.el 307 for sf in "${ROOT}${SITELISP}"/[0-9][0-9]*-gentoo.el
155 do 308 do
156 [ -r "${sf}" ] || continue 309 [ -r "${sf}" ] || continue
157 einfo " Adding $(basename ${sf}) ..." 310 sflist="${sflist} ${sf##*/}"
158 cat "${sf}" >>${ROOT}${SITELISP}/site-gentoo.el 311 cat "${sf}" >>"${T}"/site-gentoo.el
159 done 312 done
313
314 cat <<-EOF >>"${T}"/site-gentoo.el
315
316 (provide 'site-gentoo)
317
318 ;; Local Variables:
319 ;; no-byte-compile: t
320 ;; End:
321 ;;; site-gentoo.el ends here
322 EOF
323
324 if cmp -s "${ROOT}${SITELISP}"/site-gentoo.el "${T}"/site-gentoo.el; then
325 # This prevents outputting unnecessary text when there
326 # was actually no change.
327 # A case is a remerge where we have doubled output.
328 echo " no changes."
329 else
330 mv "${T}"/site-gentoo.el "${ROOT}${SITELISP}"/site-gentoo.el
331 [ -f "${T}"/site-start.el ] \
332 && [ ! -e "${ROOT}${SITELISP}"/site-start.el ] \
333 && mv "${T}"/site-start.el "${ROOT}${SITELISP}"/site-start.el
334 echo; einfo
335 for sf in ${sflist}; do
336 einfo " Adding ${sf} ..."
337 done
160 while read line; do einfo "${line}"; done <<EOF 338 while read line; do einfo "${line}"; done <<EOF
161 339
162All site initialization for Gentoo-installed packages is now added to 340All site initialisation for Gentoo-installed packages is added to
163/usr/share/emacs/site-lisp/site-gentoo.el; site-start.el is no longer 341/usr/share/emacs/site-lisp/site-gentoo.el; site-start.el is no longer
164managed by Gentoo. You are responsible for all maintenance of 342managed by Gentoo. You are responsible for all maintenance of
165site-start.el if there is such a file. 343site-start.el if there is such a file.
166 344
167In order for this site initialization to be loaded for all users 345In order for this site initialisation to be loaded for all users
168automatically, as was done previously, you can add a line like this: 346automatically, you can add a line like this:
169 347
170 (load "/usr/share/emacs/site-lisp/site-gentoo" nil t) 348 (require 'site-gentoo)
171 349
172to /usr/share/emacs/site-lisp/site-start.el. Alternatively, that line 350to /usr/share/emacs/site-lisp/site-start.el. Alternatively, that line
173can be added by individual users to their initialization files, or for 351can be added by individual users to their initialisation files, or,
174greater flexibility, users can select which of the package-specific 352for greater flexibility, users can load individual package-specific
175initialization files in /usr/share/emacs/site-lisp to load. 353initialisation files from /usr/share/emacs/site-lisp/.
176EOF 354EOF
177 echo 355 echo
178}
179
180# The following Emacs Lisp compilation routine is taken from GNU
181# autotools.
182
183elisp-comp() {
184# Copyright 1995 Free Software Foundation, Inc.
185# Fran├žois Pinard <pinard@iro.umontreal.ca>, 1995.
186# This script byte-compiles all `.el' files which are part of its
187# arguments, using GNU Emacs, and put the resulting `.elc' files into
188# the current directory, so disregarding the original directories used
189# in `.el' arguments.
190#
191# This script manages in such a way that all Emacs LISP files to
192# be compiled are made visible between themselves, in the event
193# they require or load-library one another.
194
195 if test $# = 0; then
196 exit 1
197 else
198 if test -z "${EMACS}" || test "${EMACS}" = "t"; then
199 # Value of "t" means we are running in a shell under Emacs.
200 # Just assume Emacs is called "emacs".
201 EMACS=emacs
202 fi
203
204 tempdir=elc.$$
205 mkdir ${tempdir}
206 cp $* ${tempdir}
207 cd ${tempdir}
208
209 echo "(add-to-list 'load-path \"../\")" > script
210 ${EMACS} -batch -q --no-site-file --no-init-file -l script -f batch-byte-compile *.el
211 mv *.elc ..
212
213 cd ..
214 rm -fr ${tempdir}
215 fi 356 fi
216} 357}

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