| 1 | #!/bin/sh |
| 2 | ### autogen.sh - tool to help build Emacs from a bzr checkout |
| 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 | ## The Emacs bzr repository does not include the configure script |
| 26 | ## (and associated helpers). The first time you fetch Emacs from bzr, |
| 27 | ## run this script to generate the necessary files. |
| 28 | ## For more details, see the file INSTALL.BZR. |
| 29 | |
| 30 | ### Code: |
| 31 | |
| 32 | ## Tools we need: |
| 33 | ## Note that we respect the values of AUTOCONF etc, like autoreconf does. |
| 34 | progs="autoconf automake" |
| 35 | |
| 36 | ## Minimum versions we need: |
| 37 | autoconf_min=`sed -n 's/^ *AC_PREREQ(\([0-9\.]*\)).*/\1/p' configure.in` |
| 38 | |
| 39 | ## FIXME how to determine this from the sources? |
| 40 | automake_min=1.11 |
| 41 | |
| 42 | |
| 43 | ## $1 = program, eg "autoconf". |
| 44 | ## Echo the version string, eg "2.59". |
| 45 | ## FIXME does not handle things like "1.4a", but AFAIK those are |
| 46 | ## all old versions, so it is OK to fail there. |
| 47 | ## Also note that we do not handle micro versions. |
| 48 | get_version () |
| 49 | { |
| 50 | ## Remove eg "./autogen.sh: line 50: autoconf: command not found". |
| 51 | $1 --version 2>&1 | sed -e '/not found/d' -n -e '1 s/.* \([1-9][0-9\.]*\).*/\1/p' |
| 52 | } |
| 53 | |
| 54 | ## $1 = version string, eg "2.59" |
| 55 | ## Echo the major version, eg "2". |
| 56 | major_version () |
| 57 | { |
| 58 | echo $1 | sed -e 's/\([0-9][0-9]*\)\..*/\1/' |
| 59 | } |
| 60 | |
| 61 | ## $1 = version string, eg "2.59" |
| 62 | ## Echo the minor version, eg "59". |
| 63 | minor_version () |
| 64 | { |
| 65 | echo $1 | sed -e 's/[0-9][0-9]*\.\([0-9][0-9]*\).*/\1/' |
| 66 | } |
| 67 | |
| 68 | ## $1 = program |
| 69 | ## $2 = minimum version. |
| 70 | ## Return 0 if program is present with version >= minimum version. |
| 71 | ## Return 1 if program is missing. |
| 72 | ## Return 2 if program is present but too old. |
| 73 | ## Return 3 for unexpected error (eg failed to parse version). |
| 74 | check_version () |
| 75 | { |
| 76 | ## Respect eg $AUTOMAKE if it is set, like autoreconf does. |
| 77 | uprog=`echo $1 | sed 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` |
| 78 | |
| 79 | eval uprog=\$${uprog} |
| 80 | |
| 81 | [ x"$uprog" = x ] && uprog=$1 |
| 82 | |
| 83 | have_version=`get_version $uprog` |
| 84 | |
| 85 | [ x"$have_version" = x ] && return 1 |
| 86 | |
| 87 | have_maj=`major_version $have_version` |
| 88 | need_maj=`major_version $2` |
| 89 | |
| 90 | [ x"$have_maj" != x ] && [ x"$need_maj" != x ] || return 3 |
| 91 | |
| 92 | [ $have_maj -gt $need_maj ] && return 0 |
| 93 | [ $have_maj -lt $need_maj ] && return 2 |
| 94 | |
| 95 | have_min=`minor_version $have_version` |
| 96 | need_min=`minor_version $2` |
| 97 | |
| 98 | [ x"$have_min" != x ] && [ x"$need_min" != x ] || return 3 |
| 99 | |
| 100 | [ $have_min -ge $need_min ] && return 0 |
| 101 | return 2 |
| 102 | } |
| 103 | |
| 104 | |
| 105 | cat <<EOF |
| 106 | Checking whether you have the necessary tools... |
| 107 | (Read INSTALL.BZR for more details on building Emacs) |
| 108 | |
| 109 | EOF |
| 110 | |
| 111 | missing= |
| 112 | |
| 113 | for prog in $progs; do |
| 114 | |
| 115 | eval min=\$${prog}_min |
| 116 | |
| 117 | echo "Checking for $prog (need at least version $min)..." |
| 118 | |
| 119 | check_version $prog $min |
| 120 | |
| 121 | retval=$? |
| 122 | |
| 123 | case $retval in |
| 124 | 0) stat="ok" ;; |
| 125 | 1) stat="missing" ;; |
| 126 | 2) stat="too old" ;; |
| 127 | *) stat="unable to check" ;; |
| 128 | esac |
| 129 | |
| 130 | echo $stat |
| 131 | |
| 132 | if [ $retval -ne 0 ]; then |
| 133 | missing="$missing $prog" |
| 134 | eval ${prog}_why=\""$stat"\" |
| 135 | fi |
| 136 | |
| 137 | done |
| 138 | |
| 139 | |
| 140 | if [ x"$missing" != x ]; then |
| 141 | |
| 142 | cat <<EOF |
| 143 | |
| 144 | Building Emacs from Bzr requires the following specialized programs: |
| 145 | EOF |
| 146 | |
| 147 | for prog in $progs; do |
| 148 | eval min=\$${prog}_min |
| 149 | |
| 150 | echo "$prog (minimum version $min)" |
| 151 | done |
| 152 | |
| 153 | |
| 154 | cat <<EOF |
| 155 | |
| 156 | Your system seems to be missing the following tool(s): |
| 157 | EOF |
| 158 | |
| 159 | for prog in $missing; do |
| 160 | eval why=\$${prog}_why |
| 161 | |
| 162 | echo "$prog ($why)" |
| 163 | done |
| 164 | |
| 165 | cat <<EOF |
| 166 | |
| 167 | If you think you have the required tools, please add them to your PATH |
| 168 | and re-run this script. |
| 169 | |
| 170 | Otherwise, please try installing them. |
| 171 | On systems using rpm and yum, try: "yum install PACKAGE" |
| 172 | On systems using dpkg and apt, try: "apt-get install PACKAGE" |
| 173 | Then re-run this script. |
| 174 | |
| 175 | If you do not have permission to do this, or if the version provided |
| 176 | by your system is too old, it is normally straightforward to build |
| 177 | these packages from source. You can find the sources at: |
| 178 | |
| 179 | ftp://ftp.gnu.org/gnu/PACKAGE/ |
| 180 | |
| 181 | Download the package (make sure you get at least the minimum version |
| 182 | listed above), extract it using tar, then run configure, make, |
| 183 | make install. Add the installation directory to your PATH and re-run |
| 184 | this script. |
| 185 | |
| 186 | If you know that the required versions are in your PATH, but this |
| 187 | script has made an error, then you can simply run |
| 188 | |
| 189 | autoreconf -i -I m4 |
| 190 | |
| 191 | instead of this script. |
| 192 | |
| 193 | If all else fails, you can try using the pre-built versions of the |
| 194 | generated files by doing: |
| 195 | |
| 196 | ./autogen/copy_autogen |
| 197 | |
| 198 | This is not recommended - see the comments in \`copy_autogen'. |
| 199 | |
| 200 | Please report any problems with this script to bug-gnu-emacs@gnu.org . |
| 201 | EOF |
| 202 | |
| 203 | exit 1 |
| 204 | fi |
| 205 | |
| 206 | echo "Your system has the required tools, running autoreconf..." |
| 207 | |
| 208 | |
| 209 | ## Let autoreconf figure out what, if anything, needs doing. |
| 210 | autoreconf -i -I m4 || exit $? |
| 211 | |
| 212 | echo "You can now run \`./configure'." |
| 213 | |
| 214 | exit 0 |
| 215 | |
| 216 | ### autogen.sh ends here |