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1# Copyright 1999-2002 Gentoo Technologies, Inc. 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# Author Matthew Kennedy <mkennedy@gentoo.org>
4# $Header: /var/cvsroot/gentoo-x86/eclass/elisp.eclass,v 1.1 2002/10/29 04:40:18 mkennedy Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/elisp.eclass,v 1.17 2007/04/16 15:35:56 opfer Exp $
5 4#
6# This eclass sets the site-lisp directory for emacs-related packages. 5# Copyright 2007 Christian Faulhammer <opfer@gentoo.org>
7 6# Copyright 2002-2007 Matthew Kennedy <mkennedy@gentoo.org>
8ECLASS=elisp 7# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com>
9INHERITED="$INHERITED $ECLASS" 8# Copyright 2007 Ulrich Mueller <ulm@gentoo.org>
9#
10# This is not a real eclass, but it does provide Emacs-related installation
11# utilities.
12#
13# USAGE:
14#
15# Usually you want to use this eclass for (optional) GNU Emacs support of
16# your package. This is NOT for XEmacs!
17# Many of the steps here are sometimes done by the build system of your
18# package (especially compilation), so this is mainly for standalone elisp
19# files you gathered from somewhere else.
20# When relying on the emacs USE flag, you need to add
21#
22# emacs? ( virtual/emacs )
23#
24# to your DEPEND/RDEPEND line and use the functions provided here to bring
25# the files to the correct locations.
26#
27# src_compile() usage:
28# --------------------
29#
30# An elisp file is compiled by the elisp-compile() function defined here and
31# simply takes the source files as arguments. In the case of interdependent
32# elisp files, you can use the elisp-comp() function which makes sure all
33# files are loadable.
34#
35# elisp-compile *.el || die "elisp-compile failed!"
36# or
37# elisp-comp *.el || die "elisp-comp failed!"
38#
39# Function elisp-make-autoload-file() can be used to generate a file with
40# autoload definitions for the lisp functions. It takes the output file name
41# (default: "${PN}-autoloads.el") and a list of directories (default: working
42# directory) as its arguments. Use of this function requires that the elisp
43# source files contain magic ";;;###autoload" comments. See the Emacs Lisp
44# Reference Manual (node "Autoload") for a detailed explanation.
45#
46# src_install() usage:
47# --------------------
48#
49# 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
51# 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
53# something else, but remember to tell elisp-site-file-install() (see below)
54# the change, as it defaults to ${PN}.
55#
56# elisp-install ${PN} *.elc *.el || die "elisp-install failed!"
57#
58# To let the Emacs support be activated by Emacs on startup, you need
59# to provide a site file (shipped in ${FILESDIR}) which contains the startup
60# code (have a look in the documentation of your software). Normally this
61# would look like this:
62#
63# ;;; csv-mode site-lisp configuration
64#
65# (add-to-list 'load-path "@SITELISP@")
66# (add-to-list 'auto-mode-alist '("\\.csv\\'" . csv-mode))
67# (autoload 'csv-mode "csv-mode" "Major mode for editing csv files." t)
68#
69# If your Emacs support files are installed in a subdirectory of
70# /usr/share/emacs/site-lisp/ (which is recommended if more than one file is
71# installed), you need to extend Emacs' load-path as shown in the first
72# non-comment. The elisp-site-file-install() function of this eclass will
73# replace "@SITELISP@" by the actual path.
74# The next line tells Emacs to load the mode opening a file ending with
75# ".csv" and load functions depending on the context and needed features.
76# Be careful though. Commands as "load-library" or "require" bloat the
77# editor as they are loaded on every startup. When having a lot of Emacs
78# support files, users may be annoyed by the start-up time. Also avoid
79# keybindings as they might interfere with the user's settings. Give a hint
80# in pkg_postinst(), which should be enough.
81# The naming scheme for this site file is "[0-9][0-9]*-gentoo.el", where the
82# two digits at the beginning define the loading order. So if you depend on
83# another Emacs package, your site file's number must be higher!
84# Best practice is to define a SITEFILE variable in the global scope of your
85# ebuild (right after DEPEND e.g.):
86#
87# SITEFILE=50${PN}-gentoo.el
88#
89# Which is then installed by
90#
91# elisp-site-file-install "${FILESDIR}/${SITEFILE}"
92#
93# in src_install(). If your subdirectory is not named ${PN}, give the
94# differing name as second argument.
95#
96# pkg_postinst() / pkg_postrm() usage:
97# ------------------------------------
98#
99# After that you need to recreate the start-up file of Emacs after emerging
100# and unmerging by using
101#
102# pkg_postinst() {
103# elisp-site-regen
104# }
105# pkg_postrm() {
106# elisp-site-regen
107# }
108#
109# As always: Feel free to contact Emacs team through emacs@gentoo.org if you
110# have problems, suggestions or questions.
10 111
11SITELISP=/usr/share/emacs/site-lisp 112SITELISP=/usr/share/emacs/site-lisp
113
114elisp-compile() {
115 /usr/bin/emacs --batch -f batch-byte-compile --no-site-file --no-init-file $*
116}
117
118elisp-make-autoload-file () {
119 local f="${1-${PN}-autoloads.el}"
120 shift
121 echo >"${f}"
122 emacs --batch -q --no-site-file \
123 --eval "(setq make-backup-files nil)" \
124 --eval "(setq generated-autoload-file (expand-file-name \"${f}\"))" \
125 -f batch-update-autoloads "${@-.}"
126}
12 127
13elisp-install() { 128elisp-install() {
14 local subdir=$1 129 local subdir=$1
15 dodir ${SITELISP}/${subdir} 130 dodir "${SITELISP}/${subdir}"
16 insinto ${SITELISP}/${subdir} 131 insinto "${SITELISP}/${subdir}"
17 shift 132 shift
18 doins $@ 133 doins $@
19} 134}
20 135
21elisp-site-file-install() { 136elisp-site-file-install() {
22 local sitefile=$1 137 local sitefile=$1 my_pn=${2:-${PN}}
23 pushd ${S} 138 pushd "${S}"
24 cp ${sitefile} . 139 cp ${sitefile} "${T}"
25 D=${S}/ dosed "s:@SITELISP@:${SITELISP}/${PN}:g" $(basename ${sitefile}) 140 sed -i "s:@SITELISP@:${SITELISP}/${my_pn}:g" "${T}/$(basename ${sitefile})"
26 insinto ${SITELISP} 141 insinto ${SITELISP}
27 doins ${S}/$(basename ${sitefile}) 142 doins "${T}/$(basename ${sitefile})" || die "failed to install site file"
28 popd 143 popd
29} 144}
30 145
31elisp-site-regen() { 146elisp-site-regen() {
32 einfo "Regenerating ${SITELISP}/site-start.el..." 147 einfo "Regenerating ${SITELISP}/site-gentoo.el ..."
33 einfo "" 148 einfo ""
34 cat <<EOF >${SITELISP}/site-start.el 149 cat <<EOF >${ROOT}${SITELISP}/site-gentoo.el
35;;; DO NOT EDIT THIS FILE -- IT IS GENERATED AUTOMATICALLY BY PORTAGE 150;;; DO NOT EDIT THIS FILE -- IT IS GENERATED AUTOMATICALLY BY PORTAGE
36;;; ----------------------------------------------------------------- 151;;; -----------------------------------------------------------------
37 152
38EOF 153EOF
39 ls ${SITELISP}/[0-9][0-9]* |sort -n | \ 154 ls ${ROOT}${SITELISP}/[0-9][0-9]*-gentoo.el | sort -n | \
40 while read sf 155 while read sf
41 do 156 do
42 einfo " Addding $sf..." 157 einfo " Adding $(basename $sf) ..."
43 # Great for debugging, too noisy and slow for users though 158 # Great for debugging, too noisy and slow for users though
44# echo "(message \"Loading $sf...\")" >>${SITELISP}/site-start.el 159# echo "(message \"Loading $sf ...\")" >>${ROOT}${SITELISP}/site-start.el
45 cat $sf >>${SITELISP}/site-start.el 160 cat $sf >>${ROOT}${SITELISP}/site-gentoo.el
46 done 161 done
47 einfo "" 162 while read line; do einfo "${line}"; done <<EOF
163
164All site initialization for Gentoo-installed packages is now added to
165/usr/share/emacs/site-lisp/site-gentoo.el; site-start.el is no longer
166managed by Gentoo. You are responsible for all maintenance of
167site-start.el if there is such a file.
168
169In order for this site initialization to be loaded for all users
170automatically, as was done previously, you can add a line like this:
171
172 (load "/usr/share/emacs/site-lisp/site-gentoo")
173
174to /usr/share/emacs/site-lisp/site-start.el. Alternatively, that line
175can be added by individual users to their initialization files, or for
176greater flexibility, users can select which of the package-specific
177initialization files in /usr/share/emacs/site-lisp to load.
178EOF
179 echo
48} 180}
181
182# The following Emacs Lisp compilation routine is taken from GNU
183# autotools.
184
185elisp-comp() {
186# Copyright 1995 Free Software Foundation, Inc.
187# Fran├žois Pinard <pinard@iro.umontreal.ca>, 1995.
188# This script byte-compiles all `.el' files which are part of its
189# arguments, using GNU Emacs, and put the resulting `.elc' files into
190# the current directory, so disregarding the original directories used
191# in `.el' arguments.
192#
193# This script manages in such a way that all Emacs LISP files to
194# be compiled are made visible between themselves, in the event
195# they require or load-library one another.
196
197 if test $# = 0; then
198 exit 1
199 else
200 if test -z "${EMACS}" || test "${EMACS}" = "t"; then
201 # Value of "t" means we are running in a shell under Emacs.
202 # Just assume Emacs is called "emacs".
203 EMACS=emacs
204 fi
205
206 tempdir=elc.$$
207 mkdir ${tempdir}
208 cp $* ${tempdir}
209 cd ${tempdir}
210
211 echo "(add-to-list 'load-path \"../\")" > script
212 ${EMACS} -batch -q --no-site-file --no-init-file -l script -f batch-byte-compile *.el
213 mv *.elc ..
214
215 cd ..
216 rm -fr ${tempdir}
217 fi
218}

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