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067d23c9 | 1 | #!/bin/sh |
66b87493 | 2 | ### autogen.sh - tool to help build Emacs from a bzr checkout |
067d23c9 | 3 | |
ba318903 | 4 | ## Copyright (C) 2011-2014 Free Software Foundation, Inc. |
067d23c9 | 5 | |
66b87493 | 6 | ## Author: Glenn Morris <rgm@gnu.org> |
34dc21db | 7 | ## Maintainer: emacs-devel@gnu.org |
66b87493 GM |
8 | |
9 | ## This file is part of GNU Emacs. | |
10 | ||
11 | ## GNU Emacs is free software: you can redistribute it and/or modify | |
12 | ## it under the terms of the GNU General Public License as published by | |
13 | ## the Free Software Foundation, either version 3 of the License, or | |
14 | ## (at your option) any later version. | |
15 | ||
16 | ## GNU Emacs is distributed in the hope that it will be useful, | |
17 | ## but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ## GNU General Public License for more details. | |
20 | ||
21 | ## You should have received a copy of the GNU General Public License | |
22 | ## along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. | |
23 | ||
24 | ### Commentary: | |
25 | ||
26 | ## The Emacs bzr repository does not include the configure script | |
27 | ## (and associated helpers). The first time you fetch Emacs from bzr, | |
28 | ## run this script to generate the necessary files. | |
ac4c50ad | 29 | ## For more details, see the file INSTALL.REPO. |
66b87493 GM |
30 | |
31 | ### Code: | |
32 | ||
33 | ## Tools we need: | |
42e85a8f | 34 | ## Note that we respect the values of AUTOCONF etc, like autoreconf does. |
c56327b5 | 35 | progs="autoconf automake" |
66b87493 GM |
36 | |
37 | ## Minimum versions we need: | |
c4444d16 | 38 | autoconf_min=`sed -n 's/^ *AC_PREREQ(\([0-9\.]*\)).*/\1/p' configure.ac` |
66b87493 | 39 | |
7d732d1a GM |
40 | ## This will need improving if more options are ever added to the |
41 | ## AM_INIT_AUTOMAKE call. | |
42 | automake_min=`sed -n 's/^ *AM_INIT_AUTOMAKE(\([0-9\.]*\)).*/\1/p' configure.ac` | |
66b87493 GM |
43 | |
44 | ||
45 | ## $1 = program, eg "autoconf". | |
46 | ## Echo the version string, eg "2.59". | |
47 | ## FIXME does not handle things like "1.4a", but AFAIK those are | |
48 | ## all old versions, so it is OK to fail there. | |
49 | ## Also note that we do not handle micro versions. | |
50 | get_version () | |
51 | { | |
42e85a8f | 52 | ## Remove eg "./autogen.sh: line 50: autoconf: command not found". |
5253ea1d | 53 | $1 --version 2>&1 | sed -e '/not found/d' -e 's/.* //' -n -e '1 s/\([0-9][0-9\.]*\).*/\1/p' |
66b87493 GM |
54 | } |
55 | ||
56 | ## $1 = version string, eg "2.59" | |
57 | ## Echo the major version, eg "2". | |
58 | major_version () | |
59 | { | |
60 | echo $1 | sed -e 's/\([0-9][0-9]*\)\..*/\1/' | |
61 | } | |
62 | ||
63 | ## $1 = version string, eg "2.59" | |
64 | ## Echo the minor version, eg "59". | |
65 | minor_version () | |
66 | { | |
67 | echo $1 | sed -e 's/[0-9][0-9]*\.\([0-9][0-9]*\).*/\1/' | |
68 | } | |
69 | ||
70 | ## $1 = program | |
71 | ## $2 = minimum version. | |
c80e3b4a | 72 | ## Return 0 if program is present with version >= minimum version. |
66b87493 GM |
73 | ## Return 1 if program is missing. |
74 | ## Return 2 if program is present but too old. | |
75 | ## Return 3 for unexpected error (eg failed to parse version). | |
76 | check_version () | |
77 | { | |
42e85a8f | 78 | ## Respect eg $AUTOMAKE if it is set, like autoreconf does. |
5253ea1d | 79 | uprog=`echo $1 | sed -e 's/-/_/g' -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` |
42e85a8f GM |
80 | |
81 | eval uprog=\$${uprog} | |
82 | ||
83 | [ x"$uprog" = x ] && uprog=$1 | |
84 | ||
85 | have_version=`get_version $uprog` | |
66b87493 GM |
86 | |
87 | [ x"$have_version" = x ] && return 1 | |
88 | ||
89 | have_maj=`major_version $have_version` | |
90 | need_maj=`major_version $2` | |
91 | ||
92 | [ x"$have_maj" != x ] && [ x"$need_maj" != x ] || return 3 | |
93 | ||
94 | [ $have_maj -gt $need_maj ] && return 0 | |
95 | [ $have_maj -lt $need_maj ] && return 2 | |
96 | ||
97 | have_min=`minor_version $have_version` | |
98 | need_min=`minor_version $2` | |
99 | ||
100 | [ x"$have_min" != x ] && [ x"$need_min" != x ] || return 3 | |
101 | ||
102 | [ $have_min -ge $need_min ] && return 0 | |
103 | return 2 | |
104 | } | |
105 | ||
106 | ||
107 | cat <<EOF | |
108 | Checking whether you have the necessary tools... | |
ac4c50ad | 109 | (Read INSTALL.REPO for more details on building Emacs) |
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110 | |
111 | EOF | |
112 | ||
113 | missing= | |
114 | ||
115 | for prog in $progs; do | |
116 | ||
5253ea1d GM |
117 | sprog=`echo "$prog" | sed 's/-/_/g'` |
118 | ||
119 | eval min=\$${sprog}_min | |
66b87493 GM |
120 | |
121 | echo "Checking for $prog (need at least version $min)..." | |
122 | ||
123 | check_version $prog $min | |
124 | ||
125 | retval=$? | |
126 | ||
127 | case $retval in | |
128 | 0) stat="ok" ;; | |
129 | 1) stat="missing" ;; | |
130 | 2) stat="too old" ;; | |
131 | *) stat="unable to check" ;; | |
132 | esac | |
133 | ||
134 | echo $stat | |
135 | ||
136 | if [ $retval -ne 0 ]; then | |
137 | missing="$missing $prog" | |
5253ea1d | 138 | eval ${sprog}_why=\""$stat"\" |
66b87493 GM |
139 | fi |
140 | ||
141 | done | |
142 | ||
143 | ||
144 | if [ x"$missing" != x ]; then | |
145 | ||
146 | cat <<EOF | |
147 | ||
148 | Building Emacs from Bzr requires the following specialized programs: | |
149 | EOF | |
150 | ||
151 | for prog in $progs; do | |
5253ea1d GM |
152 | sprog=`echo "$prog" | sed 's/-/_/g'` |
153 | ||
154 | eval min=\$${sprog}_min | |
66b87493 GM |
155 | |
156 | echo "$prog (minimum version $min)" | |
157 | done | |
158 | ||
159 | ||
160 | cat <<EOF | |
161 | ||
162 | Your system seems to be missing the following tool(s): | |
163 | EOF | |
164 | ||
165 | for prog in $missing; do | |
5253ea1d GM |
166 | sprog=`echo "$prog" | sed 's/-/_/g'` |
167 | ||
168 | eval why=\$${sprog}_why | |
66b87493 GM |
169 | |
170 | echo "$prog ($why)" | |
171 | done | |
172 | ||
173 | cat <<EOF | |
174 | ||
175 | If you think you have the required tools, please add them to your PATH | |
176 | and re-run this script. | |
177 | ||
178 | Otherwise, please try installing them. | |
179 | On systems using rpm and yum, try: "yum install PACKAGE" | |
180 | On systems using dpkg and apt, try: "apt-get install PACKAGE" | |
181 | Then re-run this script. | |
182 | ||
183 | If you do not have permission to do this, or if the version provided | |
184 | by your system is too old, it is normally straightforward to build | |
185 | these packages from source. You can find the sources at: | |
186 | ||
187 | ftp://ftp.gnu.org/gnu/PACKAGE/ | |
188 | ||
189 | Download the package (make sure you get at least the minimum version | |
190 | listed above), extract it using tar, then run configure, make, | |
191 | make install. Add the installation directory to your PATH and re-run | |
192 | this script. | |
193 | ||
194 | If you know that the required versions are in your PATH, but this | |
195 | script has made an error, then you can simply run | |
196 | ||
af3e4d06 | 197 | autoreconf -fi -I m4 |
66b87493 GM |
198 | |
199 | instead of this script. | |
200 | ||
66b87493 GM |
201 | Please report any problems with this script to bug-gnu-emacs@gnu.org . |
202 | EOF | |
203 | ||
dee26dfa | 204 | exit 1 |
66b87493 GM |
205 | fi |
206 | ||
af3e4d06 | 207 | echo 'Your system has the required tools.' |
c56327b5 | 208 | echo "Running 'autoreconf -fi -I m4' ..." |
66b87493 GM |
209 | |
210 | ||
211 | ## Let autoreconf figure out what, if anything, needs doing. | |
6956b278 | 212 | ## Use autoreconf's -f option in case autoreconf itself has changed. |
af3e4d06 | 213 | autoreconf -fi -I m4 || exit $? |
66b87493 | 214 | |
3f750e43 PE |
215 | ## Create a timestamp, so that './autogen.sh; make' doesn't |
216 | ## cause 'make' to needlessly run 'autoheader'. | |
217 | echo timestamp > src/stamp-h.in || exit | |
218 | ||
c56327b5 | 219 | echo "You can now run './configure'." |
66b87493 GM |
220 | |
221 | exit 0 | |
222 | ||
223 | ### autogen.sh ends here |