summaryrefslogtreecommitdiff
path: root/autogen/update_autogen
blob: 264d8d83d6d011fd7f7cf967d85fd9ab5d888436 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
#!/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