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067d23c9 | 1 | #!/bin/sh |
66b87493 | 2 | ### autogen.sh - tool to help build Emacs from a bzr checkout |
067d23c9 | 3 | |
acaf905b | 4 | ## Copyright (C) 2011-2012 Free Software Foundation, Inc. |
067d23c9 | 5 | |
66b87493 GM |
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: | |
42e85a8f | 33 | ## Note that we respect the values of AUTOCONF etc, like autoreconf does. |
66b87493 GM |
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 | { | |
42e85a8f GM |
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' | |
66b87493 GM |
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. | |
c80e3b4a | 70 | ## Return 0 if program is present with version >= minimum version. |
66b87493 GM |
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 | { | |
42e85a8f GM |
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 $uprog` | |
66b87493 GM |
84 | |
85 | [ x"$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 | ||
f6ca84c0 | 189 | autoreconf -i -I m4 |
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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 | ||
34cb1cc6 | 196 | ./autogen/copy_autogen |
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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. | |
f6ca84c0 | 210 | autoreconf -i -I m4 || exit $? |
66b87493 GM |
211 | |
212 | echo "You can now run \`./configure'." | |
213 | ||
214 | exit 0 | |
215 | ||
216 | ### autogen.sh ends here |