autogen/update_autogen

   1 #!/bin/bash
   2 ### update_autogen - update the generated files in Emacs autogen/ directory
   3
   4 ## Copyright (C) 2011-2012  Free Software Foundation, Inc.
   5
   6 ## Author: Glenn Morris <rgm@gnu.org>
   7
   8 ## This file is part of GNU Emacs.
   9
  10 ## GNU Emacs is free software: you can redistribute it and/or modify
  11 ## it under the terms of the GNU General Public License as published by
  12 ## the Free Software Foundation, either version 3 of the License, or
  13 ## (at your option) any later version.
  14
  15 ## GNU Emacs is distributed in the hope that it will be useful,
  16 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ## GNU General Public License for more details.
  19
  20 ## You should have received a copy of the GNU General Public License
  21 ## along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ### Commentary:
  24
  25 ## This is a helper script to update the pre-built generated files in
  26 ## the autogen/ directory.  This is suitable for running from cron.
  27 ## Only Emacs maintainers need use this, so it uses bash features.
  28 ##
  29 ## With the -l option, it also updates the versioned loaddefs-like
  30 ## files in lisp/.  These include ldefs-boot, cl-loaddefs, rmail, etc.
  31
  32 ### Code:
  33
  34 die ()                 # write error to stderr and exit
  35 {
  36     [ $# -gt 0 ] && echo "$PN: $@" >&2
  37     exit 1
  38 }
  39
  40 PN=${0##*/}                     # basename of script
  41 PD=${0%/*}
  42
  43 [ "$PD" = "$0" ] && PD=.        # if PATH includes PWD
  44
  45 ## This should be the autogen directory.
  46 cd $PD
  47 cd ../
  48 [ -d autogen ] || die "Could not locate autogen directory"
  49
  50
  51 usage ()
  52 {
  53     cat 1>&2 <<EOF
  54 Usage: ${PN} [-f] [-c] [-q] [-l [-L]] [-C] [-- make-flags]
  55 Update the generated files in the Emacs autogen/ directory.
  56 Options:
  57 -f: force an update even if the source files are locally modified.
  58 -c: if the update succeeds and the generated files are modified,
  59     commit them (caution).
  60 -q: be quiet; only give error messages, not status messages.
  61 -l: also update the versioned loaddefs-like files in lisp/.
  62 This requires a build.  Passes any non-option args to make (eg -- -j2).
  63 -L: also update ldefs-boot.el.
  64 -C: start from a clean state.  Slower, but more correct.
  65 EOF
  66     exit 1
  67 }
  68
  69
  70 ## Defaults.
  71
  72 force=
  73 commit=
  74 quiet=
  75 clean=
  76 ldefs_flag=
  77 lboot_flag=
  78
  79 ## Parameters.
  80 ldefs_in=lisp/loaddefs.el
  81 ldefs_out=lisp/ldefs-boot.el
  82 sources="configure.in lib/Makefile.am"
  83 genfiles="
  84   configure aclocal.m4 src/config.in lib/Makefile.in
  85   build-aux/compile build-aux/config.guess build-aux/config.sub
  86   build-aux/depcomp build-aux/install-sh build-aux/missing
  87 "
  88
  89 for g in $genfiles; do
  90     basegen="$basegen ${g##*/}"
  91 done
  92
  93 [ "$basegen" ] || die "internal error"
  94
  95 tempfile=/tmp/$PN.$$
  96
  97 trap "rm -f $tempfile 2> /dev/null" EXIT
  98
  99
 100 while getopts ":hcflqCL" option ; do
 101     case $option in
 102         (h) usage ;;
 103
 104         (c) commit=1 ;;
 105
 106         (f) force=1 ;;
 107
 108         (l) ldefs_flag=1 ;;
 109
 110         (q) quiet=1 ;;
 111
 112         (C) clean=1 ;;
 113
 114         (L) lboot_flag=1 ;;
 115
 116         (\?) die "Bad option -$OPTARG" ;;
 117
 118         (:) die "Option -$OPTARG requires an argument" ;;
 119
 120         (*) die "getopts error" ;;
 121     esac
 122 done
 123 shift $(( --OPTIND ))
 124 OPTIND=1
 125
 126
 127 ## Does not work 100% because a lot of Emacs batch output comes on stderr (?).
 128 [ "$quiet" ] && exec 1> /dev/null
 129
 130
 131 echo "Running bzr status..."
 132
 133 bzr status -S $sources ${ldefs_flag:+lisp} >| $tempfile || \
 134     die "bzr status error for sources"
 135
 136 ## The lisp portion could be more permissive, eg only care about .el files.
 137 while read stat file; do
 138
 139     case $stat in
 140         M)
 141             echo "Locally modified: $file"
 142             [ "$force" ] || die "There are local modifications"
 143             ;;
 144
 145         *) die "Unexpected status ($stat) for $file" ;;
 146     esac
 147 done < $tempfile
 148
 149
 150 ## Probably this is overkill, and there's no need to "bootstrap" just
 151 ## for making autoloads.
 152 [ "$clean" ] && {
 153
 154     echo "Running 'make maintainer-clean'..."
 155
 156     make maintainer-clean #|| die "Cleaning error"
 157
 158     rm -f $ldefs_in
 159 }
 160
 161
 162 echo "Running autoreconf..."
 163
 164 autoreconf ${clean:+-f} -i -I m4 2>| $tempfile
 165
 166 retval=$?
 167
 168 ## Annoyingly, autoreconf puts the "installing `./foo' messages on stderr.
 169 if [ "$quiet" ]; then
 170     grep -v 'installing `\.' $tempfile 1>&2
 171 else
 172     cat "$tempfile" 1>&2
 173 fi
 174
 175 [ $retval -ne 0 ] && die "autoreconf error"
 176
 177
 178 cp $genfiles autogen/
 179
 180
 181 cd autogen
 182
 183 echo "Checking status of generated files..."
 184
 185 bzr status -S $basegen >| $tempfile || \
 186     die "bzr status error for generated files"
 187
 188
 189 modified=
 190
 191 while read stat file; do
 192
 193     [ "$stat" != "M" ] && die "Unexpected status ($stat) for generated $file"
 194
 195     modified="$modified $file"
 196
 197 done < $tempfile
 198
 199
 200 cd ../
 201
 202
 203 ## Uses global $commit.
 204 commit ()
 205 {
 206     local type=$1
 207     shift
 208
 209     [ $# -gt 0 ] || {
 210         echo "No files were modified"
 211         return 0
 212     }
 213
 214     echo "Modified file(s): $@"
 215
 216     [ "$commit" ] || return 0
 217
 218     echo "Committing..."
 219
 220     ## bzr status output is always relative to top-level, not PWD.
 221     bzr commit -m "Auto-commit of $type files." "$@" || return $?
 222
 223     echo "Committed files: $@"
 224 }                               # function commit
 225
 226
 227 commit "generated" $modified || die "bzr commit error"
 228
 229
 230 [ "$ldefs_flag" ] || exit 0
 231
 232
 233 echo "Finding loaddef targets..."
 234
 235 sed -n -e '/^AUTOGEN_VCS/,/^$/ s/\\//p' lisp/Makefile.in | \
 236     sed '/AUTOGEN_VCS/d' >| $tempfile || die "sed error"
 237
 238 genfiles=
 239
 240 while read genfile; do
 241
 242     [ -r lisp/$genfile ] || die "Unable to read $genfile"
 243
 244     genfiles="$genfiles $genfile"
 245 done < $tempfile
 246
 247
 248 [ "$genfiles" ] || die "Error setting genfiles"
 249
 250
 251 [ -e Makefile ] || {
 252     echo "Running ./configure..."
 253
 254     ## Minimize required packages.
 255     ./configure --without-x || die "configure error"
 256 }
 257
 258
 259 ## Build the minimum needed to get the autoloads.
 260 echo "Running lib/ make..."
 261
 262 make -C lib "$@" all || die "make lib error"
 263
 264
 265 echo "Running src/ make..."
 266
 267 make -C src "$@" bootstrap-emacs || die "make src error"
 268
 269
 270 echo "Running lisp/ make..."
 271
 272 make -C lisp "$@" autoloads EMACS=../src/bootstrap-emacs || die "make src error"
 273
 274
 275 ## Ignore comment differences.
 276 [ ! "$lboot_flag" ] || \
 277     diff -q -I '^;' $ldefs_in $ldefs_out || \
 278     cp $ldefs_in $ldefs_out || die "cp ldefs_boot error"
 279
 280
 281 cd lisp
 282
 283 echo "Checking status of loaddef files..."
 284
 285 ## It probably would be fine to just check+commit lisp/, since
 286 ## making autoloads should not effect any other files.  But better
 287 ## safe than sorry.
 288 bzr status -S $genfiles ${ldefs_out#lisp/} >| $tempfile || \
 289     die "bzr status error for generated files"
 290
 291
 292 modified=
 293
 294 while read stat file; do
 295
 296     [ "$stat" != "M" ] && die "Unexpected status ($stat) for generated $file"
 297     modified="$modified $file"
 298
 299 done < $tempfile
 300
 301
 302 cd ../
 303
 304
 305 commit "loaddefs" $modified || die "bzr commit error"
 306
 307
 308 exit 0
 309
 310 ### update_autogen ends here