admin/quick-install-emacs

   1 #!/bin/sh
   2 ### quick-install-emacs --- do a halfway-decent job of installing emacs quickly
   3
   4 ## Copyright (C) 2001-2015 Free Software Foundation, Inc.
   5
   6 ## Author: Miles Bader <miles@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
  24 ### Commentary:
  25
  26 ## This script is mainly intended for emacs maintainer or pretesters who
  27 ## install emacs very often.  See the --help output for more details.
  28
  29
  30 PUBLIC_LIBSRC_BINARIES='emacsclient etags ctags ebrowse'
  31
  32 AVOID="CVS -DIC README COPYING ChangeLog ~ [.]orig$ [.]rej$ Makefile$ Makefile.in$ makefile$ makefile.w32-in$ stamp-subdir [.]cvsignore [.]arch-ids [{]arch[}] [.][cho]$ make-docfile"
  33
  34 # Prune old binaries lying around in the source tree
  35 PRUNE=no
  36 # Re-install files even if they already exist
  37 FORCE=no
  38 # Command verbose flag
  39 VERBOSE=''
  40
  41 me="`basename $0`"
  42
  43 # Install commands (if the user specifies the `--verbose' option, it is
  44 # passed to these commands, so that feature only works if these commands
  45 # implement it too)
  46 LINK='cp -lf'
  47 COPY='cp -f'
  48 REMOVE='rm -r'
  49 MKDIR='mkdir -p'
  50
  51 # Used to execute commands once we create them
  52 EXEC='sh'
  53
  54 NAWK=/usr/bin/nawk
  55
  56 # avoid non-standard command output from non-C locales
  57 unset LANG LC_ALL LC_MESSAGES
  58
  59 # Some messages
  60 USAGE="Usage: $me [OPTION...] BUILD_TREE [PREFIX]"
  61 TRY="Try "\`"$me --help' for more information."
  62
  63 # Parse command-line options
  64 while :; do
  65   case "$1" in
  66     -n|--dry-run)
  67       EXEC=cat; shift;;
  68     -p|--prune)
  69       PRUNE=yes; shift;;
  70     -P|--no-prune)
  71       PRUNE=no; shift;;
  72     --prune-only)
  73       PRUNE=only; shift;;
  74     -f|--force)
  75       FORCE=yes; shift;;
  76     -v|--verbose)
  77       VERBOSE="-v"; shift;;
  78     --help)
  79       cat <<EOF
  80 $USAGE
  81 Install emacs quickly
  82
  83   -n, --dry-run              print installation commands instead of
  84                              executing them
  85
  86   -f, --force                install even files that haven't changed
  87   -v, --verbose              print messages describing what is done
  88
  89   -p, --prune                prune old generated files
  90   -P, --no-prune             don't prune old generated files (default)
  91       --prune-only           prune old generated files, but don't install
  92
  93       --help                 display this help and exit
  94       --version              output version information and exit
  95
  96 $me install emacs \`incrementally,' that is, it will
  97 install only those files that have changed since the last time it was
  98 invoked, and remove any obsolete files from the installation
  99 directories.  It also uses hard-links into the source and build trees to
 100 do the install, so it uses much less space than the default Makefile
 101 install target; however, this also means that $me can
 102 not install onto a disk partition other than the one on which the source
 103 and build directories reside.
 104
 105 Optionally, $me can also remove old versions of
 106 automatically generated files that are version-specific (such as the
 107 versioned emacs executables in the \`src' directory).
 108 The latter action is called \`pruning,' and
 109 can be enabled using the \`-p' or \`--prune' options.
 110 EOF
 111       exit 0
 112       ;;
 113     --version)
 114       cat <<EOF
 115 $me 1.6
 116
 117 Written by Miles Bader <miles@gnu.org>
 118 EOF
 119       exit 0
 120       ;;
 121     -[!-]?*)
 122       # split concatenated single-letter options apart
 123       FIRST="$1"; shift
 124       set -- `echo $FIRST | sed 's/-\(.\)\(.*\)/-\1 -\2/'` "$@"
 125       ;;
 126     -*)
 127       echo 1>&2 "$me: unrecognized option "\`"$1'"
 128       echo 1>&2 "$TRY"
 129       exit 1
 130       ;;
 131     *)
 132       break;
 133   esac
 134 done
 135
 136 LINK_CMD="$LINK $VERBOSE"
 137 REMOVE_CMD="$REMOVE $VERBOSE"
 138
 139 case $# in
 140   1) BUILD="$1";;
 141   2) BUILD="$1"; prefix="$2";;
 142   *)
 143     echo 1>&2 "$USAGE"
 144     echo 1>&2 "$TRY"
 145     exit 1
 146     ;;
 147 esac
 148
 149 if test ! -d "$BUILD"; then
 150   echo 1>&2 "$me: $BUILD: Build tree not found"
 151   exit 2
 152 elif test ! -r "$BUILD/config.status"; then
 153   echo 1>&2 "$me: $BUILD: Not a proper build tree, config.status not found"
 154   exit 2
 155 fi
 156
 157 CONFIG_STATUS="$BUILD/config.status"
 158 get_config_var ()
 159 {
 160   { sed -n "s/^S[[]\"$1\"[]]=\"\([^\"]*\)\"/\1/p" $CONFIG_STATUS | sed q | grep ''; } ||
 161   { sed -n "s/^s\(.\)@$1@\1\(|#_!!_#|\)*\(.*\)\1.*$/\3/p" $CONFIG_STATUS | sed q | grep ''; } ||
 162   {
 163     echo 1>&2 "$me: $1: Configuration variable not found in $CONFIG_STATUS"
 164     exit 4
 165   }
 166 }
 167
 168 test x"$SRC" = x && { SRC="`get_config_var srcdir`" || exit 4 ; }
 169 test x"$prefix" = x && { prefix="`get_config_var prefix`" || exit 4 ; }
 170 test x"$ARCH" = x && { ARCH="`get_config_var host`" || exit 4 ; }
 171
 172 VERSION=`
 173   sed -n 's/^AC_INIT(emacs,[     ]*\([^  )]*\).*/\1/p' <$SRC/configure.ac
 174 ` || exit 4
 175 test -n "$VERSION" || { echo >&2 "$me: no version in configure.ac"; exit 4; }
 176
 177 DST_SHARE="$prefix/share/emacs/$VERSION"
 178 DST_BIN="$prefix/bin"
 179 DST_LIBEXEC="$prefix/libexec/emacs/$VERSION/$ARCH"
 180
 181 # There are various common places for the info dir to be, so try to
 182 # use whatever's already there, defaulting to (and preferring)
 183 # .../share/info.
 184 #
 185 DST_INFO=''
 186 for D in "$prefix/share/info" "$prefix/info"; do
 187   if test -d "$D"; then
 188     DST_INFO="$D"
 189     break
 190   fi
 191 done
 192 DST_INFO=${DST_INFO:-"$prefix/share/info"}
 193
 194 maybe_mkdir ()
 195 {
 196   if ! test -d "$1"; then
 197     $MKDIR $VERBOSE "$1" 2>&1 | sed "s/^mkdir:/$me:/" 1>&2
 198   fi
 199 }
 200
 201 maybe_mkdir "$DST_BIN"
 202 maybe_mkdir "$DST_SHARE"
 203 maybe_mkdir "$DST_SHARE/site-lisp"
 204 maybe_mkdir "$DST_LIBEXEC"
 205 maybe_mkdir "$DST_INFO"
 206
 207 (  # start of command-generating sub-shell
 208
 209 PRUNED=""
 210 if test x"$PRUNE" != xno; then
 211   for D in `ls -1t $BUILD/src/emacs-$VERSION.* | sed 1d`; do
 212     echo $REMOVE_CMD $D
 213     PRUNED="$PRUNED $D"
 214   done
 215 fi
 216
 217 test x"$PRUNE" = xonly && exit 0
 218
 219 maybe_emit_copy ()
 220 {
 221   if test "$FORCE" = yes || ! cmp -s $1 $2; then
 222     echo $LINK_CMD $1 $2
 223   fi
 224 }
 225
 226 maybe_emit_copy $BUILD/src/emacs $DST_BIN/emacs
 227 maybe_emit_copy $BUILD/src/emacs $DST_BIN/emacs-$VERSION
 228
 229 for F in $PUBLIC_LIBSRC_BINARIES; do
 230   maybe_emit_copy $BUILD/lib-src/$F $DST_BIN/$F
 231 done
 232
 233 if test x"$SRC" = x"$BUILD"; then
 234   PFXS="$BUILD"
 235 else
 236   PFXS="$SRC $BUILD"
 237 fi
 238
 239 for SUBDIR in lisp leim etc lib-src info; do
 240   # defaults
 241   SHARED=no
 242   FORCED=''
 243   AVOID_PAT="`echo "($AVOID)" | tr ' ' '|'`"
 244
 245   # Set subdir-specific values
 246   case $SUBDIR in
 247     lisp|leim)
 248       DST="$DST_SHARE/$SUBDIR"
 249       ;;
 250     etc)
 251       DST="$DST_SHARE/$SUBDIR"
 252       # COPYING is in the avoid list, but there should be a copy of it in
 253       # the install etc dir, so make that here.
 254       FORCED="$DST/COPYING"
 255       ;;
 256     lib-src)
 257       DST="$DST_LIBEXEC"
 258       AVOID_PAT="`echo "($AVOID ($PUBLIC_LIBSRC_BINARIES)\$)" | tr ' ' '|'`"
 259       ;;
 260     info)
 261       DST="$DST_INFO"
 262       SHARED=yes
 263       ;;
 264   esac
 265
 266   for PFX in $PFXS; do
 267     if [ -d $PFX/$SUBDIR ]; then
 268       for DIR in `(cd $PFX/$SUBDIR; find . -type d -print | sed 's@^./@@')`; do
 269         if [ -d $DST/$DIR ]; then
 270           echo Directory $DST/$DIR exists
 271         else
 272           echo Directory $DST/$DIR non-existent
 273           if [ "`echo $DIR | egrep -v "$AVOID_PAT"`" ]; then
 274             maybe_mkdir $DST/$DIR
 275           fi
 276         fi
 277       done
 278       diff -sqr $PFX/$SUBDIR $DST
 279     fi
 280   done | $NAWK '
 281 BEGIN {
 282   src_pat = "^'"$SRC"'/'"$SUBDIR"'/"
 283   build_pat = "^'"$BUILD"'/'"$SUBDIR"'/"
 284   dst_pat = "^'"$DST"'/"
 285   dst_pfx = "'"$DST"'/"
 286   avoid_pat = "'"$AVOID_PAT"'"
 287   force = ("'"$FORCE"'" == "yes")
 288   shared = ("'"$SHARED"'" == "yes")
 289   init_bool_array(pruned, "'"$PRUNED"'")
 290   init_bool_array(forced, "'"$FORCED"'")
 291 }
 292 function init_bool_array(array, string,  a,k)
 293 {
 294   split (string, a)
 295   for (k in a)
 296     array[a[k]] = 1
 297 }
 298 function install(src, dst)
 299 {
 300   if (! (src in pruned)) {
 301     cp[src] = dst;
 302     from[dst] = src;
 303     delete rm[dst];
 304   }
 305 }
 306 function update(src, dst, copy)
 307 {
 308   if (src in pruned) {
 309     rm[dst] = 1;
 310     delete from[dst]
 311   } else {
 312     if (copy)
 313       cp[src] = dst;
 314     from[dst] = src;
 315     delete rm[dst];
 316   }
 317 }
 318 function uninstall(dst)
 319 {
 320   if (!(dst in from))
 321     rm[dst] = 1;
 322 }
 323 /^Directory / {
 324   if ($2 ~ avoid_pat) {
 325     if ($NF == "exists")
 326       uninstall($2)
 327   } else
 328     update(0, $2, 0)
 329   next
 330 }
 331 /^Files / {
 332   if ($4 ~ avoid_pat && !($4 in forced))
 333     uninstall($4)
 334   else if ($NF == "identical")
 335     update($2, $4, force)
 336   else
 337     update($2, $4, 1)
 338   next
 339 }
 340 /^Only /  {
 341   pfx = $3
 342   sub (/:$/, "/", pfx)
 343
 344   if (pfx ~ dst_pat) {
 345     if (! shared)
 346       uninstall(pfx $4)
 347   } else {
 348     subdir = pfx
 349     if (subdir ~ src_pat)
 350       sub (src_pat, "", subdir)
 351     else
 352       sub (build_pat, "", subdir)
 353
 354     dst = dst_pfx subdir $4
 355     if (! (dst ~ avoid_pat))
 356       install(pfx $4, dst)
 357   }
 358   next
 359 }
 360 END {
 361   for (f in rm)
 362     print "'"$REMOVE_CMD"' " f
 363   for (f in cp)
 364     print "'"$LINK_CMD"' " f " " cp[f]
 365 }
 366 '
 367 done
 368
 369 ) | eval $EXEC