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1# Copyright 1999-2010 Gentoo Foundation 1# Copyright 1999-2011 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 1.68 2010/10/09 15:30:43 ulm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/elisp-common.eclass,v 1.72 2011/08/13 12:19:39 ulm Exp $
4# 4#
5# Copyright 2002-2004 Matthew Kennedy <mkennedy@gentoo.org> 5# Copyright 2002-2004 Matthew Kennedy <mkennedy@gentoo.org>
6# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com> 6# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com>
7# Copyright 2004-2005 Mamoru Komachi <usata@gentoo.org> 7# Copyright 2004-2005 Mamoru Komachi <usata@gentoo.org>
8# Copyright 2007-2008 Christian Faulhammer <fauli@gentoo.org> 8# Copyright 2007-2008 Christian Faulhammer <fauli@gentoo.org>
9# Copyright 2007-2010 Ulrich Müller <ulm@gentoo.org> 9# Copyright 2007-2011 Ulrich Müller <ulm@gentoo.org>
10# 10#
11# @ECLASS: elisp-common.eclass 11# @ECLASS: elisp-common.eclass
12# @MAINTAINER: 12# @MAINTAINER:
13# Feel free to contact the Emacs team through <emacs@gentoo.org> if you 13# Feel free to contact the Emacs team through <emacs@gentoo.org> if you
14# have problems, suggestions or questions. 14# have problems, suggestions or questions.
26# 26#
27# emacs? ( virtual/emacs ) 27# emacs? ( virtual/emacs )
28# 28#
29# to your DEPEND/RDEPEND line and use the functions provided here to 29# to your DEPEND/RDEPEND line and use the functions provided here to
30# bring the files to the correct locations. 30# bring the files to the correct locations.
31#
32# If your package requires a minimum Emacs version, e.g. Emacs 23, then
33# the dependency should be on >=virtual/emacs-23 instead. Because the
34# user can select the Emacs executable with eselect, you should also
35# make sure that the active Emacs version is sufficient. This can be
36# tested with function elisp-need-emacs(), which would typically be
37# called from pkg_setup(), as in the following example:
38#
39# elisp-need-emacs 23 || die "Emacs version too low"
40#
41# Please note that such tests should be limited to packages that are
42# known to fail with lower Emacs versions; the standard case is to
43# depend on virtual/emacs without version.
31# 44#
32# .SS 45# .SS
33# src_compile() usage: 46# src_compile() usage:
34# 47#
35# An elisp file is compiled by the elisp-compile() function defined 48# An elisp file is compiled by the elisp-compile() function defined
124# to above calls of elisp-site-regen(). 137# to above calls of elisp-site-regen().
125# Don't use "has_version virtual/emacs"! When unmerging the state of 138# Don't use "has_version virtual/emacs"! When unmerging the state of
126# the emacs USE flag is taken from the package database and not from the 139# the emacs USE flag is taken from the package database and not from the
127# environment, so it is no problem when you unset USE=emacs between 140# environment, so it is no problem when you unset USE=emacs between
128# merge and unmerge of a package. 141# merge and unmerge of a package.
129#
130# .SS
131# Miscellaneous functions:
132#
133# elisp-emacs-version() outputs the version of the currently active Emacs.
134 142
135# @ECLASS-VARIABLE: SITELISP 143# @ECLASS-VARIABLE: SITELISP
136# @DESCRIPTION: 144# @DESCRIPTION:
137# Directory where packages install Emacs Lisp files. 145# Directory where packages install Emacs Lisp files.
138SITELISP=/usr/share/emacs/site-lisp 146SITELISP=/usr/share/emacs/site-lisp
155 163
156# @ECLASS-VARIABLE: BYTECOMPFLAGS 164# @ECLASS-VARIABLE: BYTECOMPFLAGS
157# @DESCRIPTION: 165# @DESCRIPTION:
158# Emacs flags used for byte-compilation in elisp-compile(). 166# Emacs flags used for byte-compilation in elisp-compile().
159BYTECOMPFLAGS="-L ." 167BYTECOMPFLAGS="-L ."
168
169# @FUNCTION: elisp-emacs-version
170# @DESCRIPTION:
171# Output version of currently active Emacs.
172
173elisp-emacs-version() {
174 local ret
175 # The following will work for at least versions 18-23.
176 echo "(princ emacs-version)" >"${T}"/emacs-version.el
177 ${EMACS} ${EMACSFLAGS} -l "${T}"/emacs-version.el
178 ret=$?
179 rm -f "${T}"/emacs-version.el
180 if [[ ${ret} -ne 0 ]]; then
181 eerror "elisp-emacs-version: Failed to run ${EMACS}"
182 fi
183 return ${ret}
184}
185
186# @FUNCTION: elisp-need-emacs
187# @USAGE: <version>
188# @RETURN: 0 if true, 1 otherwise
189# @DESCRIPTION:
190# Test if the eselected Emacs version is at least the major version
191# specified as argument.
192
193elisp-need-emacs() {
194 local need_emacs=$1 have_emacs
195 have_emacs=$(elisp-emacs-version) || return
196 einfo "Emacs version: ${have_emacs}"
197 if ! [[ ${have_emacs%%.*} -ge ${need_emacs%%.*} ]]; then
198 eerror "This package needs at least Emacs ${need_emacs%%.*}."
199 eerror "Use \"eselect emacs\" to select the active version."
200 return 1
201 fi
202 return 0
203}
160 204
161# @FUNCTION: elisp-compile 205# @FUNCTION: elisp-compile
162# @USAGE: <list of elisp files> 206# @USAGE: <list of elisp files>
163# @DESCRIPTION: 207# @DESCRIPTION:
164# Byte-compile Emacs Lisp files. 208# Byte-compile Emacs Lisp files.
173 217
174elisp-compile() { 218elisp-compile() {
175 ebegin "Compiling GNU Emacs Elisp files" 219 ebegin "Compiling GNU Emacs Elisp files"
176 ${EMACS} ${EMACSFLAGS} ${BYTECOMPFLAGS} -f batch-byte-compile "$@" 220 ${EMACS} ${EMACSFLAGS} ${BYTECOMPFLAGS} -f batch-byte-compile "$@"
177 eend $? "elisp-compile: batch-byte-compile failed" 221 eend $? "elisp-compile: batch-byte-compile failed"
178}
179
180elisp-comp() {
181 die "Function elisp-comp is not supported any more, see bug 235442"
182}
183
184# @FUNCTION: elisp-emacs-version
185# @DESCRIPTION:
186# Output version of currently active Emacs.
187
188elisp-emacs-version() {
189 # The following will work for at least versions 18-23.
190 echo "(princ emacs-version)" >"${T}"/emacs-version.el
191 ${EMACS} ${EMACSFLAGS} -l "${T}"/emacs-version.el
192 rm -f "${T}"/emacs-version.el
193} 222}
194 223
195# @FUNCTION: elisp-make-autoload-file 224# @FUNCTION: elisp-make-autoload-file
196# @USAGE: [output file] [list of directories] 225# @USAGE: [output file] [list of directories]
197# @DESCRIPTION: 226# @DESCRIPTION:
259 288
260 [[ ${sf} == [0-9][0-9]*-gentoo*.el ]] \ 289 [[ ${sf} == [0-9][0-9]*-gentoo*.el ]] \
261 || ewarn "elisp-site-file-install: bad name of site-init file" 290 || ewarn "elisp-site-file-install: bad name of site-init file"
262 sf="${T}/${sf/%-gentoo*.el/-gentoo.el}" 291 sf="${T}/${sf/%-gentoo*.el/-gentoo.el}"
263 ebegin "Installing site initialisation file for GNU Emacs" 292 ebegin "Installing site initialisation file for GNU Emacs"
264 [[ $1 = ${sf} ]] || cp "$1" "${sf}" 293 [[ $1 = "${sf}" ]] || cp "$1" "${sf}"
265 sed -i -e "1{:x;/^\$/{n;bx;};/^;.*${PN}/I!s:^:${header}\n\n:;1s:^:\n:;}" \ 294 sed -i -e "1{:x;/^\$/{n;bx;};/^;.*${PN}/I!s:^:${header}\n\n:;1s:^:\n:;}" \
266 -e "s:@SITELISP@:${EPREFIX}${SITELISP}/${my_pn}:g" \ 295 -e "s:@SITELISP@:${EPREFIX}${SITELISP}/${my_pn}:g" \
267 -e "s:@SITEETC@:${EPREFIX}${SITEETC}/${my_pn}:g;\$q" "${sf}" 296 -e "s:@SITEETC@:${EPREFIX}${SITEETC}/${my_pn}:g;\$q" "${sf}"
268 ( # subshell to avoid pollution of calling environment 297 ( # subshell to avoid pollution of calling environment
269 insinto "${SITELISP}/site-gentoo.d" 298 insinto "${SITELISP}/site-gentoo.d"
328 EOF 357 EOF
329 # Use sed instead of cat here, since files may miss a trailing newline. 358 # Use sed instead of cat here, since files may miss a trailing newline.
330 sed '$q' "${sflist[@]}" </dev/null >>"${T}"/site-gentoo.el 359 sed '$q' "${sflist[@]}" </dev/null >>"${T}"/site-gentoo.el
331 cat <<-EOF >>"${T}"/site-gentoo.el 360 cat <<-EOF >>"${T}"/site-gentoo.el
332 361
362 ${page}
333 (provide 'site-gentoo) 363 (provide 'site-gentoo)
334 364
335 ${page}
336 ;; Local ${null}Variables: 365 ;; Local ${null}Variables:
337 ;; no-byte-compile: t 366 ;; no-byte-compile: t
338 ;; buffer-read-only: t 367 ;; buffer-read-only: t
339 ;; End: 368 ;; End:
340 369

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