import-gnulib.sh

   1 #! /bin/sh
   2 #
   3 # import-gnulib.sh -- imports a copy of gnulib into findutils
   4 # Copyright (C) 2003,2004,2005,2006,2007 Free Software Foundation, Inc.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2, or (at your option)
   9 # any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 # USA.
  20 #
  21 ##########################################################################
  22 #
  23 # This script is intended to populate the "gnulib" directory
  24 # with a subset of the gnulib code, as provided by "gnulib-tool".
  25 #
  26 # To use it, just run this script with the top-level sourec directory
  27 # as your working directory.
  28
  29 # If CDPATH is set, it will sometimes print the name of the directory
  30 # to which you have moved.  Unsetting CDPATH prevents this, as does
  31 # prefixing it with ".".
  32 unset CDPATH
  33
  34 ## Defaults
  35 # cvsdir=/doesnotexist
  36 configfile="./import-gnulib.config"
  37 need_checkout=yes
  38
  39
  40 usage() {
  41     cat >&2 <<EOF
  42 usage: $0 [-d gnulib-directory]
  43
  44 The default behaviour is to check out the Gnulib code via anonymous
  45 CVS (or update it if there is a version already checked out).  The
  46 checkout or update is performed to the gnulib version indicated in
  47 the configuration file $configfile.
  48
  49 If you wish to work with a different version of gnulib, use the -d option
  50 to specify the directory containing the gnulib code.
  51 EOF
  52 }
  53
  54
  55 do_checkout () {
  56     local cvsdir="$1"
  57     echo checking out gnulib from CVS in $cvsdir
  58
  59     if [ -z "$gnulib_version" ] ; then
  60         echo "Error: There should be a gnulib_version setting in $configfile, but there is not." >&2
  61         exit 1
  62     fi
  63
  64
  65     if ! [ -d "$cvsdir" ] ; then
  66         if mkdir "$cvsdir" ; then
  67         echo "Created $cvsdir"
  68         else
  69         echo "Failed to create $cvsdir" >&2
  70         exit 1
  71         fi
  72     fi
  73
  74     # Decide if gnulib_version is probably a date or probably a tag.
  75     if date -d yesterday >/dev/null ; then
  76         # It looks like GNU date is available
  77         if date -d "$gnulib_version" >/dev/null ; then
  78         # Looks like a date.
  79         cvs_sticky_option="-D"
  80         else
  81         echo "Warning: assuming $gnulib_version is a CVS tag rather than a date" >&2
  82         cvs_sticky_option="-r"
  83         fi
  84     else
  85         # GNU date unavailable, assume the version is a date
  86         cvs_sticky_option="-D"
  87     fi
  88
  89
  90
  91     (
  92         # Change directory unconditionally (rater than  using checkout -d) so that
  93         # cvs does not pick up defaults from ./CVS.  Those defaults refer to our
  94         # own CVS repository for our code, not to gnulib.
  95         cd $cvsdir
  96         if test -d gnulib/CVS ; then
  97         cd gnulib
  98         cmd=update
  99         root="" # use previous
 100         else
 101         root="-d :pserver:anonymous@cvs.sv.gnu.org:/sources/gnulib"
 102         cmd=checkout
 103         args=gnulib
 104         fi
 105         set -x
 106         cvs -q -z3 $root  $cmd $cvs_sticky_option "$gnulib_version" $args
 107         set +x
 108     )
 109 }
 110
 111 run_gnulib_tool() {
 112     local tool="$1"
 113     if test -f "$tool"
 114     then
 115         true
 116     else
 117         echo "$tool does not exist, did you specify the right directory?" >&2
 118         exit 1
 119     fi
 120
 121     if test -x "$tool"
 122     then
 123         true
 124     else
 125         echo "$tool is not executable" >&2
 126         exit 1
 127     fi
 128
 129
 130     if [ -d gnulib ]
 131     then
 132         echo "Warning: directory gnulib already exists, removing it." >&2
 133         rm -rf gnulib
 134     fi
 135     mkdir gnulib
 136
 137     set -x
 138     if "$tool" --import --symlink --with-tests --dir=. --lib=libgnulib --source-base=gnulib/lib --m4-base=gnulib/m4  $modules
 139     then
 140         set +x
 141     else
 142         set +x
 143         echo "$tool failed, exiting." >&2
 144         exit 1
 145     fi
 146 }
 147
 148
 149 hack_gnulib_tool_output() {
 150     local gnulibdir="${1}"
 151     for file in $extra_files; do
 152       case $file in
 153         */mdate-sh | */texinfo.tex) dest=doc;;
 154         *) dest=build-aux;;
 155       esac
 156       cp -fp "${gnulibdir}"/"$file" "$dest" || exit
 157     done
 158
 159
 160
 161
 162     cat > gnulib/Makefile.am <<EOF
 163 # Copyright (C) 2004 Free Software Foundation, Inc.
 164 #
 165 # This file is free software, distributed under the terms of the GNU
 166 # General Public License.  As a special exception to the GNU General
 167 # Public License, this file may be distributed as part of a program
 168 # that contains a configuration script generated by Automake, under
 169 # the same distribution terms as the rest of that program.
 170 #
 171 # This file was generated by $0 $@.
 172 #
 173 SUBDIRS = lib
 174 EOF
 175 }
 176
 177
 178 refresh_output_files() {
 179     aclocal -I m4 -I gnulib/m4     &&
 180     autoheader                     &&
 181     autoconf                       &&
 182     automake --add-missing --copy
 183 }
 184
 185
 186 update_version_file() {
 187     local ver
 188     outfile="lib/gnulib-version.c"
 189     if [ -z "$gnulib_version" ] ; then
 190         ver="unknown (locally modified code; no version number available)"
 191     else
 192         ver="$gnulib_version"
 193     fi
 194
 195
 196     cat > "${outfile}".new <<EOF
 197 /* This file is automatically generated by $0 and simply records which version of gnulib we used. */
 198 const char * const gnulib_version = "$ver";
 199 EOF
 200     if test -f "$outfile" ; then
 201         if diff "${outfile}".new "${outfile}" > /dev/null ; then
 202             rm "${outfile}".new
 203             return 0
 204         fi
 205     fi
 206     mv "${outfile}".new "${outfile}"
 207 }
 208
 209
 210 main() {
 211     ## Option parsing
 212     local gnulibdir=/doesnotexist
 213     while getopts "d:a" opt
 214     do
 215       case "$opt" in
 216           d)  gnulibdir="$OPTARG" ; need_checkout=no ;;
 217           a)  refresh_output_files ; exit $? ;;
 218           **) usage; exit 1;;
 219       esac
 220     done
 221
 222     # We need the config file to tell us which modules
 223     # to use, even if we don't want to know the CVS version.
 224     . $configfile || exit 1
 225
 226     ## If -d was not given, do CVS checkout/update
 227     if [ $need_checkout = yes ] ; then
 228         do_checkout gnulib-cvs
 229         gnulibdir=gnulib-cvs/gnulib
 230     else
 231         echo "Warning: using gnulib code which already exists in $gnulibdir" >&2
 232     fi
 233
 234     ## Invoke gnulib-tool to import the code.
 235     local tool="${gnulibdir}"/gnulib-tool
 236
 237     if run_gnulib_tool "${tool}" &&
 238         hack_gnulib_tool_output "${gnulibdir}" &&
 239         refresh_output_files &&
 240         update_version_file   ; then
 241         echo Done.
 242     else
 243         echo FAILED >&2
 244         exit 1
 245     fi
 246 }
 247
 248 main "$@"