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311 lines
10 KiB
311 lines
10 KiB
# Copyright 1999-2012 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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#
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# Copyright 2007-2011 Hans de Graaff <graaff@gentoo.org>
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#
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# Based on elisp-common.eclass:
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# Copyright 2007 Christian Faulhammer <opfer@gentoo.org>
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# Copyright 2002-2004 Matthew Kennedy <mkennedy@gentoo.org>
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# Copyright 2004-2005 Mamoru Komachi <usata@gentoo.org>
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# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com>
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# Copyright 2007 Ulrich Müller <ulm@gentoo.org>
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#
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# @ECLASS: xemacs-elisp-common.eclass
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# @MAINTAINER:
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# xemacs@gentoo.org
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# @BLURB: XEmacs-related installation utilities
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# @DESCRIPTION:
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#
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# Usually you want to use this eclass for (optional) XEmacs support of
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# your package. This is NOT for GNU Emacs!
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#
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# Many of the steps here are sometimes done by the build system of your
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# package (especially compilation), so this is mainly for standalone elisp
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# files you gathered from somewhere else.
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#
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# When relying on the xemacs USE flag, you need to add
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#
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# xemacs? ( app-editors/xemacs )
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#
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# to your DEPEND/RDEPEND line and use the functions provided here to bring
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# the files to the correct locations.
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#
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# @ROFF .SS
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# src_compile() usage:
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#
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# An elisp file is compiled by the xemacs-elisp-compile() function
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# defined here and simply takes the source files as arguments.
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#
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# xemacs-elisp-compile *.el
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#
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# In the case of interdependent elisp files, you can use the
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# xemacs-elisp-comp() function which makes sure all files are
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# loadable.
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#
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# xemacs-elisp-comp *.el
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#
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# Function xemacs-elisp-make-autoload-file() can be used to generate a
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# file with autoload definitions for the lisp functions. It takes a
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# list of directories (default: working directory) as its argument.
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# Use of this function requires that the elisp source files contain
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# magic ";;;###autoload" comments. See the XEmacs Lisp Reference Manual
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# (node "Autoload") for a detailed explanation.
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#
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# @ROFF .SS
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# src_install() usage:
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#
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# The resulting compiled files (.elc) should be put in a subdirectory
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# of /usr/lib/xemacs/site-lisp/ which is named after the first
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# argument of xemacs-elisp-install(). The following parameters are
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# the files to be put in that directory. Usually the subdirectory
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# should be ${PN}, but you can choose something else.
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#
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# xemacs-elisp-install ${PN} *.el *.elc
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#
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# To let the XEmacs support be activated by XEmacs on startup, you need
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# to provide a site file (shipped in ${FILESDIR}) which contains the
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# startup code (have a look in the documentation of your software).
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# Normally this would look like this:
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#
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# (add-to-list 'load-path "@SITELISP@")
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# (add-to-list 'auto-mode-alist '("\\.csv\\'" . csv-mode))
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# (autoload 'csv-mode "csv-mode" "Major mode for csv files." t)
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#
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# If your XEmacs support files are installed in a subdirectory of
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# /usr/share/xemacs/site-packages/ (which is strongly recommended), you need
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# to extend XEmacs' load-path as shown in the first non-comment line.
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# The xemacs-elisp-site-file-install() function of this eclass will replace
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# "@SITELISP@" by the actual path.
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#
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# The next line tells XEmacs to load the mode opening a file ending
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# with ".csv" and load functions depending on the context and needed
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# features. Be careful though. Commands as "load-library" or "require"
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# bloat the editor as they are loaded on every startup. When having
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# many XEmacs support files, users may be annoyed by the start-up time.
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# Also avoid keybindings as they might interfere with the user's
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# settings. Give a hint in pkg_postinst(), which should be enough.
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#
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# The naming scheme for this site-init file matches the shell pattern
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# "[1-8][0-9]*-gentoo*.el", where the two digits at the beginning define
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# the loading order (numbers below 10 or above 89 are reserved for
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# internal use). So if your initialisation depends on another XEmacs
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# package, your site file's number must be higher! If there are no such
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# interdependencies then the number should be 50. Otherwise, numbers
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# divisible by 10 are preferred.
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#
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# Best practice is to define a SITEFILE variable in the global scope of
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# your ebuild (e.g., right after S or RDEPEND):
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#
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# SITEFILE="50${PN}-gentoo.el"
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#
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# Which is then installed by
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#
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# xemacs-elisp-site-file-install "${FILESDIR}/${SITEFILE}" || die
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#
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# in src_install(). Any characters after the "-gentoo" part and before
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# the extension will be stripped from the destination file's name.
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# For example, a file "50${PN}-gentoo-${PV}.el" will be installed as
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# "50${PN}-gentoo.el". If your subdirectory is not named ${PN}, give
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# the differing name as second argument.
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# @ECLASS-VARIABLE: XEMACS_SITELISP
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# @DESCRIPTION:
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# Directory where packages install indivivual XEmacs Lisp files.
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XEMACS_SITELISP=/usr/share/xemacs/site-lisp
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# @ECLASS-VARIABLE: XEMACS_SITEPACKAGE
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# @DESCRIPTION:
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# Directory where packages install XEmacs Lisp packages.
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XEMACS_SITEPACKAGE=/usr/share/xemacs/site-packages
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# @ECLASS-VARIABLE: XEMACS
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# @DESCRIPTION:
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# Path of XEmacs executable.
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XEMACS=/usr/bin/xemacs
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# @ECLASS-VARIABLE: XEMACS_BATCH_CLEAN
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# @DESCRIPTION:
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# Invocation of XEMACS in batch mode.
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XEMACS_BATCH_CLEAN="${XEMACS} --batch --no-site-file --no-init-file"
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# @FUNCTION: xemacs-elisp-compile
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# @USAGE: <list of elisp files>
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# @DESCRIPTION:
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# Byte-compile elisp files with xemacs. This function will die when
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# there is a problem compiling the lisp files.
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xemacs-elisp-compile () {
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{
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${XEMACS_BATCH_CLEAN} -f batch-byte-compile "$@"
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xemacs-elisp-make-autoload-file "$@"
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} || die "Compile lisp files failed"
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}
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xemacs-elisp-make-autoload-file () {
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${XEMACS_BATCH_CLEAN} \
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-eval "(setq autoload-package-name \"${PN}\")" \
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-eval "(setq generated-autoload-file \"${S}/auto-autoloads.el\")" \
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-l autoload -f batch-update-autoloads "$@"
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}
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# @FUNCTION: xemacs-elisp-install
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# @USAGE: <subdirectory> <list of files>
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# @DESCRIPTION:
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# Install elisp source and byte-compiled files. All files are installed
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# in site-packages in their own directory, indicated by the first
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# argument to the function. This function will die if there is a problem
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# installing the list files.
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xemacs-elisp-install () {
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local subdir="$1"
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shift
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( # use sub-shell to avoid possible environment polution
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dodir "${XEMACS_SITEPACKAGE}"/lisp/"${subdir}"
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insinto "${XEMACS_SITEPACKAGE}"/lisp/"${subdir}"
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doins "$@"
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) || die "Installing lisp files failed"
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}
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# @FUNCTION: xemacs-elisp-comp
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# @USAGE: <list of elisp files>
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# @DESCRIPTION:
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# Byte-compile interdependent XEmacs lisp files.
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# Originally taken from GNU autotools, but some configuration options
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# removed as they don't make sense with the current status of XEmacs
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# in Gentoo.
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xemacs-elisp-comp() {
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# Copyright 1995 Free Software Foundation, Inc.
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# François Pinard <pinard@iro.umontreal.ca>, 1995.
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# This script byte-compiles all `.el' files which are part of its
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# arguments, using XEmacs, and put the resulting `.elc' files into
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# the current directory, so disregarding the original directories used
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# in `.el' arguments.
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#
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# This script manages in such a way that all XEmacs LISP files to
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# be compiled are made visible between themselves, in the event
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# they require or load-library one another.
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test $# -gt 0 || return 1
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einfo "Compiling XEmacs Elisp files ..."
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tempdir=elc.$$
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mkdir ${tempdir}
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cp "$@" ${tempdir}
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pushd ${tempdir}
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echo "(add-to-list 'load-path \"../\")" > script
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${XEMACS_BATCH_CLEAN} -l script -f batch-byte-compile *.el
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local ret=$?
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mv *.elc ..
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popd
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rm -fr ${tempdir}
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return ${ret}
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}
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# @FUNCTION: xemacs-elisp-site-file-install
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# @USAGE: <site-init file> [subdirectory]
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# @DESCRIPTION:
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# Install XEmacs site-init file in XEMACS_SITELISP directory.
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# Automatically inserts a standard comment header with the name of the
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# package (unless it is already present). Token @SITELISP@ is replaced
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# by the path to the package's subdirectory in XEMACS_SITELISP.
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xemacs-elisp-site-file-install() {
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local sf="${1##*/}" my_pn="${2:-${PN}}" ret
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local header=";;; ${PN} site-lisp configuration"
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[[ ${sf} == [0-9][0-9]*-gentoo*.el ]] \
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|| ewarn "xemacs-elisp-site-file-install: bad name of site-init file"
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sf="${T}/${sf/%-gentoo*.el/-gentoo.el}"
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ebegin "Installing site initialisation file for XEmacs"
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[[ $1 = "${sf}" ]] || cp "$1" "${sf}"
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sed -i -e "1{:x;/^\$/{n;bx;};/^;.*${PN}/I!s:^:${header}\n\n:;1s:^:\n:;}" \
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-e "s:@SITELISP@:${EPREFIX}${XEMACS_SITELISP}/${my_pn}:g" "${sf}"
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( # subshell to avoid pollution of calling environment
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insinto "${XEMACS_SITELISP}/site-gentoo.d"
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doins "${sf}"
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)
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ret=$?
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rm -f "${sf}"
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eend ${ret} "xemacs-elisp-site-file-install: doins failed"
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}
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# @FUNCTION: xemacs-elisp-site-regen
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# @DESCRIPTION:
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# Regenerate the site-gentoo.el file, based on packages' site
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# initialisation files in the /usr/share/xemacs/site-lisp/site-gentoo.d/
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# directory.
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xemacs-elisp-site-regen() {
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local sitelisp=${ROOT}${EPREFIX}${XEMACS_SITELISP}
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local sf i line null="" page=$'\f'
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local -a sflist
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if [ ! -d "${sitelisp}" ]; then
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eerror "xemacs-elisp-site-regen: Directory ${sitelisp} does not exist"
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return 1
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fi
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if [ ! -d "${T}" ]; then
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eerror "xemacs-elisp-site-regen: Temporary directory ${T} does not exist"
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return 1
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fi
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einfon "Regenerating site-gentoo.el for XEmacs (${EBUILD_PHASE}) ..."
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for sf in "${sitelisp}"/site-gentoo.d/[0-9][0-9]*.el
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do
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[ -r "${sf}" ] || continue
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# sort files by their basename. straight insertion sort.
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for ((i=${#sflist[@]}; i>0; i--)); do
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[[ ${sf##*/} < ${sflist[i-1]##*/} ]] || break
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sflist[i]=${sflist[i-1]}
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done
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sflist[i]=${sf}
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done
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cat <<-EOF >"${T}"/site-gentoo.el
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;;; site-gentoo.el --- site initialisation for Gentoo-installed packages
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;;; Commentary:
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;; Automatically generated by xemacs-elisp-common.eclass
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;; DO NOT EDIT THIS FILE
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;;; Code:
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EOF
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# Use sed instead of cat here, since files may miss a trailing newline.
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sed '$q' "${sflist[@]}" </dev/null >>"${T}"/site-gentoo.el
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cat <<-EOF >>"${T}"/site-gentoo.el
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${page}
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(provide 'site-gentoo)
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;; Local ${null}Variables:
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;; no-byte-compile: t
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;; buffer-read-only: t
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;; End:
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;;; site-gentoo.el ends here
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EOF
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if cmp -s "${sitelisp}"/site-gentoo.el "${T}"/site-gentoo.el; then
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# This prevents outputting unnecessary text when there
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# was actually no change.
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# A case is a remerge where we have doubled output.
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rm -f "${T}"/site-gentoo.el
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echo " no changes."
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else
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mv "${T}"/site-gentoo.el "${sitelisp}"/site-gentoo.el
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echo
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case ${#sflist[@]} in
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0) ewarn "... Huh? No site initialisation files found." ;;
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1) einfo "... ${#sflist[@]} site initialisation file included." ;;
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*) einfo "... ${#sflist[@]} site initialisation files included." ;;
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esac
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fi
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return 0
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}
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