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emacs/autogen/update_autogen
2013-01-01 09:11:05 +00:00

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#!/bin/bash
### update_autogen - update the generated files in Emacs autogen/ directory
## Copyright (C) 2011-2013 Free Software Foundation, Inc.
## Author: Glenn Morris <rgm@gnu.org>
## This file is part of GNU Emacs.
## GNU Emacs is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
## GNU Emacs is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
## You should have received a copy of the GNU General Public License
## along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
### Commentary:
## This is a helper script to update the pre-built generated files in
## the autogen/ directory. This is suitable for running from cron.
## Only Emacs maintainers need use this, so it uses bash features.
##
## With the -l option, it also updates the versioned loaddefs-like
## files in lisp/. These include ldefs-boot, cl-loaddefs, rmail, etc.
### Code:
die () # write error to stderr and exit
{
[ $# -gt 0 ] && echo "$PN: $@" >&2
exit 1
}
PN=${0##*/} # basename of script
PD=${0%/*}
[ "$PD" = "$0" ] && PD=. # if PATH includes PWD
## This should be the autogen directory.
cd $PD
cd ../
[ -d autogen ] || die "Could not locate autogen directory"
usage ()
{
cat 1>&2 <<EOF
Usage: ${PN} [-f] [-c] [-q] [-l [-L]] [-C] [-- make-flags]
Update the generated files in the Emacs autogen/ directory.
Options:
-f: force an update even if the source files are locally modified.
-c: if the update succeeds and the generated files are modified,
commit them (caution).
-q: be quiet; only give error messages, not status messages.
-l: also update the versioned loaddefs-like files in lisp/.
This requires a build. Passes any non-option args to make (eg -- -j2).
-L: also update ldefs-boot.el.
-C: start from a clean state. Slower, but more correct.
EOF
exit 1
}
## Defaults.
force=
commit=
quiet=
clean=
ldefs_flag=
lboot_flag=
## Parameters.
ldefs_in=lisp/loaddefs.el
ldefs_out=lisp/ldefs-boot.el
sources="configure.ac lib/Makefile.am"
genfiles="
configure aclocal.m4 src/config.in lib/Makefile.in
build-aux/compile build-aux/config.guess build-aux/config.sub
build-aux/depcomp build-aux/install-sh build-aux/missing
"
for g in $genfiles; do
basegen="$basegen ${g##*/}"
done
[ "$basegen" ] || die "internal error"
tempfile=/tmp/$PN.$$
trap "rm -f $tempfile 2> /dev/null" EXIT
while getopts ":hcflqCL" option ; do
case $option in
(h) usage ;;
(c) commit=1 ;;
(f) force=1 ;;
(l) ldefs_flag=1 ;;
(q) quiet=1 ;;
(C) clean=1 ;;
(L) lboot_flag=1 ;;
(\?) die "Bad option -$OPTARG" ;;
(:) die "Option -$OPTARG requires an argument" ;;
(*) die "getopts error" ;;
esac
done
shift $(( --OPTIND ))
OPTIND=1
## Does not work 100% because a lot of Emacs batch output comes on stderr (?).
[ "$quiet" ] && exec 1> /dev/null
echo "Running bzr status..."
bzr status -S $sources ${ldefs_flag:+lisp} >| $tempfile || \
die "bzr status error for sources"
## The lisp portion could be more permissive, eg only care about .el files.
while read stat file; do
case $stat in
M)
echo "Locally modified: $file"
[ "$force" ] || die "There are local modifications"
;;
*) die "Unexpected status ($stat) for $file" ;;
esac
done < $tempfile
## Probably this is overkill, and there's no need to "bootstrap" just
## for making autoloads.
[ "$clean" ] && {
echo "Running 'make maintainer-clean'..."
make maintainer-clean #|| die "Cleaning error"
rm -f $ldefs_in
}
echo "Running autoreconf..."
autoreconf ${clean:+-f} -i -I m4 2>| $tempfile
retval=$?
## Annoyingly, autoreconf puts the "installing `./foo' messages on stderr.
if [ "$quiet" ]; then
grep -v 'installing `\.' $tempfile 1>&2
else
cat "$tempfile" 1>&2
fi
[ $retval -ne 0 ] && die "autoreconf error"
cp $genfiles autogen/
cd autogen
echo "Checking status of generated files..."
bzr status -S $basegen >| $tempfile || \
die "bzr status error for generated files"
modified=
while read stat file; do
[ "$stat" != "M" ] && die "Unexpected status ($stat) for generated $file"
modified="$modified $file"
done < $tempfile
cd ../
## Uses global $commit.
commit ()
{
local type=$1
shift
[ $# -gt 0 ] || {
echo "No files were modified"
return 0
}
echo "Modified file(s): $@"
[ "$commit" ] || return 0
echo "Committing..."
## bzr status output is always relative to top-level, not PWD.
bzr commit -m "Auto-commit of $type files." "$@" || return $?
echo "Committed files: $@"
} # function commit
commit "generated" $modified || die "bzr commit error"
[ "$ldefs_flag" ] || exit 0
echo "Finding loaddef targets..."
sed -n -e '/^AUTOGEN_VCS/,/^$/ s/\\//p' lisp/Makefile.in | \
sed '/AUTOGEN_VCS/d' >| $tempfile || die "sed error"
genfiles=
while read genfile; do
[ -r lisp/$genfile ] || die "Unable to read $genfile"
genfiles="$genfiles $genfile"
done < $tempfile
[ "$genfiles" ] || die "Error setting genfiles"
[ -e Makefile ] || {
echo "Running ./configure..."
## Minimize required packages.
./configure --without-x || die "configure error"
}
## Build the minimum needed to get the autoloads.
echo "Running lib/ make..."
make -C lib "$@" all || die "make lib error"
echo "Running src/ make..."
make -C src "$@" bootstrap-emacs || die "make src error"
echo "Running lisp/ make..."
make -C lisp "$@" autoloads EMACS=../src/bootstrap-emacs || die "make src error"
## Ignore comment differences.
[ ! "$lboot_flag" ] || \
diff -q -I '^;' $ldefs_in $ldefs_out || \
cp $ldefs_in $ldefs_out || die "cp ldefs_boot error"
cd lisp
echo "Checking status of loaddef files..."
## It probably would be fine to just check+commit lisp/, since
## making autoloads should not effect any other files. But better
## safe than sorry.
bzr status -S $genfiles ${ldefs_out#lisp/} >| $tempfile || \
die "bzr status error for generated files"
modified=
while read stat file; do
[ "$stat" != "M" ] && die "Unexpected status ($stat) for generated $file"
modified="$modified $file"
done < $tempfile
cd ../
commit "loaddefs" $modified || die "bzr commit error"
exit 0
### update_autogen ends here