bootstrap

   1 #! /bin/sh
   2
   3 # bootstrap (GNU M4) version 2007-11-05
   4 # Written by Gary V. Vaughan  <gary@gnu.org>
   5
   6 # Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
   7
   8 # This file is part of GNU M4.
   9 #
  10 # GNU M4 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 M4 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 this program.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 # Usage: $progname [options]
  24
  25 # -f      --force            bootstrap even when sources are not from git
  26 # -v      --version          print version information
  27 # -h,-?   --help             print short or long help message
  28
  29 # You can also set the following variables to help $progname
  30 # locate the right tools:
  31 #   AUTORECONF, GNULIB_TOOL, M4, RM, SED
  32
  33 # This script bootstraps a git or CVS checkout of GNU M4 by correctly
  34 # calling out to parts of the GNU Build Platform.  Currently this
  35 # requires GNU Autoconf 2.60, GNU Automake 1.9.6, and bleeding edge
  36 # git or CVS snapshots of GNU Gnulib.
  37
  38 # Report bugs to <bug-m4@gnu.org>
  39
  40 : ${AUTORECONF=autoreconf}
  41 : ${GNULIB_TOOL=gnulib-tool}
  42 : ${RM=rm -f}
  43 : ${SED=sed}
  44
  45 # Ensure file names are sorted consistently across platforms.
  46 LC_ALL=C
  47 export LC_ALL
  48
  49 config_macro_dir=m4
  50
  51 dirname="s,/[^/]*$,,"
  52 basename="s,^.*/,,g"
  53
  54 # Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh
  55 # is ksh but when the shell is invoked as "sh" and the current value of
  56 # the _XPG environment variable is not equal to 1 (one), the special
  57 # positional parameter $0, within a function call, is the name of the
  58 # function.
  59 progpath="$0"
  60
  61 # The name of this program:
  62 progname=`echo "$progpath" | $SED "$basename"`
  63 PROGRAM=bootstrap
  64
  65 # Detect whether this is a version control system checkout or a tarball
  66 vcs_only_file=HACKING
  67
  68 # func_echo arg...
  69 # Echo program name prefixed message.
  70 func_echo ()
  71 {
  72     echo $progname: ${1+"$@"}
  73 }
  74
  75
  76 # func_error arg...
  77 # Echo program name prefixed message to standard error.
  78 func_error ()
  79 {
  80     echo $progname: ${1+"$@"} >&2
  81 }
  82
  83 # func_fatal_error arg...
  84 # Echo program name prefixed message to standard error, and exit.
  85 func_fatal_error ()
  86 {
  87     func_error ${1+"$@"}
  88     exit $EXIT_FAILURE
  89 }
  90
  91 # func_verbose arg...
  92 # Echo program name prefixed message in verbose mode only.
  93 func_verbose ()
  94 {
  95     $opt_verbose && func_error ${1+"$@"}
  96 }
  97
  98 # func_missing_arg argname
  99 # Echo program name prefixed message to standard error and set global
 100 # exit_cmd.
 101 func_missing_arg ()
 102 {
 103    func_error "missing argument for $1"
 104    exit_cmd=exit
 105 }
 106
 107 # func_fatal_help arg...
 108 # Echo program name prefixed message to standard error, followed by
 109 # a help hint, and exit.
 110 func_fatal_help ()
 111 {
 112     func_error ${1+"$@"}
 113     func_fatal_error "Try \`$progname --help' for more information."
 114 }
 115
 116 # func_missing_arg argname
 117 # Echo program name prefixed message to standard error and set global
 118 # exit_cmd.
 119 func_missing_arg ()
 120 {
 121    func_error "missing argument for $1"
 122    exit_cmd=exit
 123 }
 124
 125 # func_usage
 126 # Echo short help message to standard output and exit.
 127 func_usage ()
 128 {
 129     $SED '/^# Usage:/,/# -h/ {
 130         s/^# //; s/^# *$//;
 131         s/\$progname/'$progname'/;
 132         p;
 133     }; d' < "$progpath"
 134     echo
 135     echo "run \`$progname --help | more' for full usage"
 136     exit $EXIT_SUCCESS
 137 }
 138
 139 # func_help
 140 # Echo long help message to standard output and exit.
 141 func_help ()
 142 {
 143     $SED '/^# Usage:/,/# Report bugs to/ {
 144         s/^# //; s/^# *$//;
 145         s/\$progname/'$progname'/;
 146         p;
 147      }; d' < "$progpath"
 148     exit $EXIT_SUCCESS
 149 }
 150
 151 # func_version
 152 # Echo version message to standard output and exit.
 153 func_version ()
 154 {
 155     $SED '/^# '$PROGRAM' (GNU /,/# warranty; / {
 156         s/^# //; s/^# *$//;
 157         s/\((C)\)[ 0-9,-]*\( [1-9][0-9]*\)/\1\2/;
 158         p;
 159      }; d' < "$progpath"
 160      exit $EXIT_SUCCESS
 161 }
 162
 163 # func_update
 164 # Copy $1 to $2 if it is newer.
 165 func_update ()
 166 {
 167   if test -f "$2" && cmp -s "$1" "$2" ; then
 168     func_verbose "$2 is up-to-date"
 169   else
 170     func_echo "copying $1 -> $2"
 171     cp "$1" "$2"
 172   fi
 173 }
 174
 175 # Parse options once, thoroughly.  This comes as soon as possible in
 176 # the script to make things like `bootstrap --version' happen quickly.
 177 {
 178   # sed scripts:
 179   my_sed_single_opt='1s/^\(..\).*$/\1/;q'
 180   my_sed_single_rest='1s/^..\(.*\)$/\1/;q'
 181   my_sed_long_opt='1s/^\(--[^=]*\)=.*/\1/;q'
 182   my_sed_long_arg='1s/^--[^=]*=//'
 183
 184   # this just eases exit handling
 185   while test $# -gt 0; do
 186     opt="$1"
 187     shift
 188     case $opt in
 189       # Separate optargs to short options:
 190       -f|--force)       vcs_only_file=                                  ;;
 191       -\?|-h)           func_usage                                      ;;
 192       --help)           func_help                                       ;;
 193       --version)        func_version                                    ;;
 194       --)               break                                           ;;
 195       -*)               func_fatal_help "unrecognized option \`$opt'"   ;;
 196       *)                set -- "$opt" ${1+"$@"};        break           ;;
 197     esac
 198   done
 199
 200   # Bail if the options were screwed
 201   $exit_cmd $EXIT_FAILURE
 202
 203   if test -n "$vcs_only_file" && test ! -r "$vcs_only_file"; then
 204     func_fatal_error \
 205       "Bootstrapping from a non-version-control distribution is risky."
 206   fi
 207 }
 208
 209 ## ---------------- ##
 210 ## Version control. ##
 211 ## ---------------- ##
 212
 213 # gnulib-tool updates m4/.{git,cvs}ignore and lib/.{git,cvs}ignore, and
 214 # keeping generated files under version control does not make sense.
 215 # Since lib is entirely ignored, we only need to prepopulate the m4 ignore
 216 # files with generated files not tracked by gnulib-tool.
 217 if test -f $config_macro_dir/.gitignore ; then
 218   :
 219 else
 220   func_echo "creating initial $config_macro_dir/.cvsignore"
 221   cat > $config_macro_dir/.cvsignore <<\EOF
 222 # files created by gnulib, but that gnulib doesn't track
 223 *~
 224 .cvsignore
 225 .gitignore
 226 gnulib-comp.m4
 227 # gnulib-tool edits below here
 228 EOF
 229   func_echo "creating initial $config_macro_dir/.gitignore"
 230   cp $config_macro_dir/.cvsignore $config_macro_dir/.gitignore
 231 fi
 232
 233 ## ---------------------------- ##
 234 ## Find the gnulib module tree. ##
 235 ## ---------------------------- ##
 236
 237 case $GNULIB_TOOL in
 238     /*  )  gnulibdir=$GNULIB_TOOL ;;            # absolute
 239     */* )  gnulibdir=`pwd`/$GNULIB_TOOL ;;      # relative
 240     *   )  gnulibdir=`which "$GNULIB_TOOL"` ;;  # PATH search
 241 esac
 242
 243 # Follow symlinks
 244 while test -h "$gnulibdir"; do
 245
 246     # Resolve symbolic link.
 247     sedexpr1='s, -> ,#%%#,'
 248     sedexpr2='s,^.*#%%#\(.*\)$,\1,p'
 249     linkval=`ls -l "$gnulibdir" | $SED "$sedexpr1" | $SED -n "$sedexpr2"`
 250     test -n "$linkval" || break
 251
 252     case "$linkval" in
 253         /* ) gnulibdir="$linkval" ;;
 254         * )  gnulibdir=`echo "$gnulibdir" | sed -e 's,/[^/]*$,,'`/"$linkval" ;;
 255     esac
 256
 257 done
 258
 259 gnulibdir=`echo "$gnulibdir" | $SED "$dirname"`
 260
 261 ## ---------------------- ##
 262 ## Import Gnulib modules. ##
 263 ## ---------------------- ##
 264
 265 func_echo "running: $GNULIB_TOOL --update"
 266 $GNULIB_TOOL --update || func_fatal_error "gnulib-tool failed"
 267
 268 ## ----------- ##
 269 ## Autoreconf. ##
 270 ## ----------- ##
 271
 272 func_echo "running: $AUTORECONF --force --verbose --install"
 273 $AUTORECONF --force --verbose --install || func_fatal_error "autoreconf failed"
 274
 275 ## ---------------------------------------- ##
 276 ## Gnulib is more up-to-date than automake. ##
 277 ## ---------------------------------------- ##
 278
 279 func_update "$gnulibdir"/build-aux/config.guess build-aux/config.guess
 280 func_update "$gnulibdir"/build-aux/config.sub build-aux/config.sub
 281 func_update "$gnulibdir"/build-aux/depcomp build-aux/depcomp
 282 func_update "$gnulibdir"/build-aux/install-sh build-aux/install-sh
 283 func_update "$gnulibdir"/build-aux/mdate-sh build-aux/mdate-sh
 284 func_update "$gnulibdir"/build-aux/missing build-aux/missing
 285 func_update "$gnulibdir"/build-aux/texinfo.tex build-aux/texinfo.tex
 286 func_update "$gnulibdir"/doc/COPYINGv3 COPYING
 287 func_update "$gnulibdir"/doc/INSTALL INSTALL
 288
 289 exit 0
 290
 291 # Local variables:
 292 # eval: (add-hook 'write-file-hooks 'time-stamp)
 293 # time-stamp-start: "# bootstrap (GNU M4) version "
 294 # time-stamp-format: "%:y-%02m-%02d"
 295 # time-stamp-end: "$"
 296 # End: