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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 1.30 2007/11/17 15:39:35 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 ${PN}, give the
94# differing name as second argument. 103# differing name as second argument.
95# 104#
105# .SS
96# pkg_postinst() / pkg_postrm() usage: 106# pkg_postinst() / pkg_postrm() usage:
97# ------------------------------------
98# 107#
99# After that you need to recreate the start-up file of Emacs after emerging 108# After that you need to recreate the start-up file of Emacs after emerging
100# and unmerging by using 109# and unmerging by using
101# 110#
102# pkg_postinst() { 111# pkg_postinst() {
103# elisp-site-regen 112# elisp-site-regen
104# } 113# }
114#
105# pkg_postrm() { 115# pkg_postrm() {
106# elisp-site-regen 116# elisp-site-regen
107# } 117# }
108# 118#
109# As always: Feel free to contact Emacs team through emacs@gentoo.org if you 119# When having optional Emacs support, you should prepend "use emacs &&" to
110# have problems, suggestions or questions. 120# above calls of elisp-site-regen(). Don't use "has_version virtual/emacs"!
121# When unmerging the state of the emacs USE flag is taken from the package
122# database and not from the environment, so it is no problem when you unset
123# USE=emacs between merge and unmerge of a package.
124#
125# .SS
126# Miscellaneous functions:
127#
128# elisp-emacs-version() outputs the version of the currently active Emacs.
111 129
130# @ECLASS-VARIABLE: SITELISP
131# @DESCRIPTION:
132# Directory where Emacs Lisp files are installed.
112SITELISP=/usr/share/emacs/site-lisp 133SITELISP=/usr/share/emacs/site-lisp
113 134
135# @ECLASS-VARIABLE: SITEFILE
136# @DESCRIPTION:
137# Name of package's site-init file.
138SITEFILE=50${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
114elisp-compile() { 149elisp-compile() {
115 /usr/bin/emacs --batch -f batch-byte-compile --no-site-file --no-init-file $* 150 einfo "Compiling GNU Emacs Elisp files ..."
151 ${EMACS} ${EMACSFLAGS} -f batch-byte-compile "$@"
116} 152}
117 153
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 # Fran├žois 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
118elisp-make-autoload-file () { 207elisp-make-autoload-file() {
119 local f="${1:-${PN}-autoloads.el}" 208 local f="${1:-${PN}-autoloads.el}"
120 shift 209 shift
121 echo >"${f}" 210 einfo "Generating autoload file for GNU Emacs ..."
122 emacs --batch -q --no-site-file \ 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} \
123 --eval "(setq make-backup-files nil)" \ 230 --eval "(setq make-backup-files nil)" \
124 --eval "(setq generated-autoload-file (expand-file-name \"${f}\"))" \ 231 --eval "(setq generated-autoload-file (expand-file-name \"${f}\"))" \
125 -f batch-update-autoloads "${@-.}" 232 -f batch-update-autoloads "${@-.}"
126} 233}
127 234
235# @FUNCTION: elisp-install
236# @USAGE: <subdirectory> <list of files>
237# @DESCRIPTION:
238# Install files in SITELISP directory.
239
128elisp-install() { 240elisp-install() {
129 local subdir=$1 241 local subdir="$1"
130 dodir "${SITELISP}/${subdir}"
131 insinto "${SITELISP}/${subdir}"
132 shift 242 shift
243 einfo "Installing Elisp files for GNU Emacs support ..."
244 ( # subshell to avoid pollution of calling environment
245 insinto "${SITELISP}/${subdir}"
133 doins $@ 246 doins "$@"
247 )
134} 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.
135 254
136elisp-site-file-install() { 255elisp-site-file-install() {
137 local sitefile=$1 my_pn=${2:-${PN}} 256 local sf="$1" my_pn="${2:-${PN}}"
138 pushd "${S}" 257 einfo "Installing site initialisation file for GNU Emacs ..."
139 cp ${sitefile} "${T}" 258 cp "${sf}" "${T}"
140 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
141 insinto ${SITELISP} 261 insinto "${SITELISP}"
142 doins "${T}/$(basename ${sitefile})" || die "failed to install site file" 262 doins "${T}/$(basename "${sf}")"
143 popd 263 )
144} 264}
265
266# @FUNCTION: elisp-site-regen
267# @DESCRIPTION:
268# Regenerate site-gentoo.el file.
145 269
146elisp-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
147 einfo "Regenerating ${SITELISP}/site-gentoo.el ..." 292 einfon "Regenerating ${SITELISP}/site-gentoo.el ..."
148 einfo ""
149 cat <<EOF >${ROOT}${SITELISP}/site-gentoo.el 293 cat <<-EOF >"${T}"/site-gentoo.el
150;;; DO NOT EDIT THIS FILE -- IT IS GENERATED AUTOMATICALLY BY PORTAGE 294 ;;; site-gentoo.el --- site initialisation for Gentoo-installed packages
151;;; -----------------------------------------------------------------
152 295
296 ;;; Commentary:
297 ;; Automatically generated by elisp-common.eclass
298 ;; DO NOT EDIT THIS FILE
299
300 ;;; Code:
153EOF 301 EOF
302
154 for sf in ${ROOT}${SITELISP}/[0-9][0-9]*-gentoo.el 303 for sf in "${ROOT}${SITELISP}"/[0-9][0-9]*-gentoo.el
155 do 304 do
156 [ -r "${sf}" ] || continue 305 [ -r "${sf}" ] || continue
157 einfo " Adding $(basename ${sf}) ..." 306 sflist="${sflist} $(basename "${sf}")"
158 cat "${sf}" >>${ROOT}${SITELISP}/site-gentoo.el 307 cat "${sf}" >>"${T}"/site-gentoo.el
159 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
160 while read line; do einfo "${line}"; done <<EOF 334 while read line; do einfo "${line}"; done <<EOF
161 335
162All site initialization for Gentoo-installed packages is now added to 336All site initialisation for Gentoo-installed packages is added to
163/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
164managed by Gentoo. You are responsible for all maintenance of 338managed by Gentoo. You are responsible for all maintenance of
165site-start.el if there is such a file. 339site-start.el if there is such a file.
166 340
167In order for this site initialization to be loaded for all users 341In order for this site initialisation to be loaded for all users
168automatically, as was done previously, you can add a line like this: 342automatically, you can add a line like this:
169 343
170 (load "/usr/share/emacs/site-lisp/site-gentoo" nil t) 344 (require 'site-gentoo)
171 345
172to /usr/share/emacs/site-lisp/site-start.el. Alternatively, that line 346to /usr/share/emacs/site-lisp/site-start.el. Alternatively, that line
173can be added by individual users to their initialization files, or for 347can be added by individual users to their initialisation files, or for
174greater flexibility, users can select which of the package-specific 348greater flexibility, users can select which of the package-specific
175initialization files in /usr/share/emacs/site-lisp to load. 349initialisation files in /usr/share/emacs/site-lisp/ to load.
176EOF 350EOF
177 echo 351 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 352 fi
216} 353}

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