2 ### autogen.sh - tool to help build Emacs from a repository checkout
4 ## Copyright (C) 2011-2019 Free Software Foundation, Inc.
6 ## Author: Glenn Morris <rgm@gnu.org>
7 ## Maintainer: emacs-devel@gnu.org
9 ## This file is part of GNU Emacs.
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.
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.
21 ## You should have received a copy of the GNU General Public License
22 ## along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
26 ## The Emacs repository does not include the configure script (and
27 ## associated helpers). The first time you fetch Emacs from the repo,
28 ## run this script to generate the necessary files.
29 ## For more details, see the file INSTALL.REPO.
34 ## Note that we respect the values of AUTOCONF etc, like autoreconf does.
37 ## Minimum versions we need:
38 autoconf_min
=`sed -n 's/^ *AC_PREREQ(\([0-9\.]*\)).*/\1/p' configure.ac`
41 ## $1 = program, eg "autoconf".
42 ## Echo the version string, eg "2.59".
43 ## FIXME does not handle things like "1.4a", but AFAIK those are
44 ## all old versions, so it is OK to fail there.
45 ## Also note that we do not handle micro versions.
48 vers
=`($1 --version) 2> /dev/null` && expr "$vers" : '[^
49 ]* \([0-9][0-9.]*\).*'
52 ## $1 = version string, eg "2.59"
53 ## Echo the major version, eg "2".
56 echo $1 |
sed -e 's/\([0-9][0-9]*\)\..*/\1/'
59 ## $1 = version string, eg "2.59"
60 ## Echo the minor version, eg "59".
63 echo $1 |
sed -e 's/[0-9][0-9]*\.\([0-9][0-9]*\).*/\1/'
67 ## $2 = minimum version.
68 ## Return 0 if program is present with version >= minimum version.
69 ## Return 1 if program is missing.
70 ## Return 2 if program is present but too old.
71 ## Return 3 for unexpected error (eg failed to parse version).
74 ## Respect, e.g., $AUTOCONF if it is set, like autoreconf does.
75 uprog0
=`echo $1 | sed -e 's/-/_/g' -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
77 eval uprog
=\$
${uprog0}
79 if [ x
"$uprog" = x
]; then
82 printf '%s' "(using $uprog0=$uprog) "
85 ## /bin/sh should always define the "command" builtin, but
86 ## sometimes it does not on hydra.nixos.org.
87 ## /bin/sh = "BusyBox v1.27.2", "built-in shell (ash)".
88 ## It seems to be an optional compile-time feature in that shell:
89 ## see ASH_CMDCMD in <https://git.busybox.net/busybox/tree/shell/ash.c>.
90 if command -v command > /dev
/null
2>&1; then
91 command -v $uprog > /dev
/null ||
return 1
93 $uprog --version > /dev
/null
2>&1 ||
return 1
95 have_version
=`get_version $uprog` ||
return 4
97 have_maj
=`major_version $have_version`
98 need_maj
=`major_version $2`
100 [ x
"$have_maj" != x
] && [ x
"$need_maj" != x
] ||
return 3
102 [ $have_maj -gt $need_maj ] && return 0
103 [ $have_maj -lt $need_maj ] && return 2
105 have_min
=`minor_version $have_version`
106 need_min
=`minor_version $2`
108 [ x
"$have_min" != x
] && [ x
"$need_min" != x
] ||
return 3
110 [ $have_min -ge $need_min ] && return 0
121 exec echo "$0: usage: $0 [--no-check] [target...]
122 Targets are: all autoconf git";;
127 test -r .git
&& do_git
=true
;;
133 echo >&2 "$0: $arg: unknown argument"; exit 1;;
137 case $do_autoconf,$do_git in
140 test -r .git
&& do_git
=true
;;
143 # Generate Autoconf-related files, if requested.
145 if $do_autoconf; then
149 echo 'Checking whether you have the necessary tools...
150 (Read INSTALL.REPO for more details on building Emacs)'
154 for prog
in $progs; do
156 sprog
=`echo "$prog" | sed 's/-/_/g'`
158 eval min
=\$
${sprog}_min
160 printf '%s' "Checking for $prog (need at least version $min) ... "
162 check_version
$prog $min
171 *) stat
="unable to check" ;;
176 if [ $retval -ne 0 ]; then
177 missing
="$missing $prog"
178 eval ${sprog}_why
=\""$stat"\"
184 if [ x
"$missing" != x
]; then
187 Building Emacs from the repository requires the following specialized programs:'
189 for prog
in $progs; do
190 sprog
=`echo "$prog" | sed 's/-/_/g'`
192 eval min
=\$
${sprog}_min
194 echo "$prog (minimum version $min)"
199 Your system seems to be missing the following tool(s):'
201 for prog
in $missing; do
202 sprog
=`echo "$prog" | sed 's/-/_/g'`
204 eval why
=\$
${sprog}_why
210 If you think you have the required tools, please add them to your PATH
211 and re-run this script.
213 Otherwise, please try installing them.
214 On systems using rpm and yum, try: "yum install PACKAGE"
215 On systems using dpkg and apt, try: "apt-get install PACKAGE"
216 Then re-run this script.
218 If you do not have permission to do this, or if the version provided
219 by your system is too old, it is normally straightforward to build
220 these packages from source. You can find the sources at:
222 https://ftp.gnu.org/gnu/PACKAGE/
224 Download the package (make sure you get at least the minimum version
225 listed above), extract it using tar, then run configure, make,
226 make install. Add the installation directory to your PATH and re-run
229 If you know that the required versions are in your PATH, but this
230 script has made an error, then you can simply re-run this script with
231 the --no-check option.
233 Please report any problems with this script to bug-gnu-emacs@gnu.org .'
238 echo 'Your system has the required tools.'
242 # Build aclocal.m4 here so that autoreconf need not use aclocal.
243 # aclocal is part of Automake and might not be installed, and
244 # autoreconf skips aclocal if aclocal.m4 is already supplied.
245 ls m
4/*.
m4 | LC_ALL
=C
sort |
sed 's,.*\.m4$,m4_include([&]),' \
246 > aclocal.
m4.tmp ||
exit
247 if cmp -s aclocal.
m4.tmp aclocal.
m4; then
250 echo "Building aclocal.m4 ..."
251 mv aclocal.
m4.tmp aclocal.
m4
254 echo "Running 'autoreconf -fi -I m4' ..."
256 ## Let autoreconf figure out what, if anything, needs doing.
257 ## Use autoreconf's -f option in case autoreconf itself has changed.
258 autoreconf
-fi -I m4 ||
exit
262 # True if the Git setup was OK before autogen.sh was run.
267 case `cp --help 2>/dev/null` in
268 *--backup*--verbose*)
269 cp_options
='--backup=numbered --verbose';;
276 # Like 'git config NAME VALUE' but verbose on change and exiting on failure.
277 # Also, do not configure unless requested.
286 ovalue
=`git config --get "$name"` && test "$ovalue" = "$value" ||
{
288 echo 'Configuring local git repository...'
291 config
=$git_common_dir/config
292 cp $cp_options --force -- "$config" "$config" ||
exit;;
295 echo "git config $name '$value'"
296 git config
"$name" "$value" ||
exit
301 ## Configure Git, if requested.
303 # Get location of Git's common configuration directory. For older Git
304 # versions this is just '.git'. Newer Git versions support worktrees.
307 git_common_dir
=`git rev-parse --no-flags --git-common-dir 2>/dev/null` &&
308 test -n "$git_common_dir"
309 } || git_common_dir
=.git
310 hooks
=$git_common_dir/hooks
312 # Check hashes when transferring objects among repositories.
314 git_config transfer.fsckObjects true
317 # Configure 'git diff' hunk header format.
319 # This xfuncname is based on Git's built-in 'cpp' pattern.
320 # The first line rejects jump targets and access declarations.
321 # The second line matches top-level functions and methods.
322 # The third line matches preprocessor and DEFUN macros.
323 git_config
diff.cpp.xfuncname \
324 '!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:[[:space:]]*($|/[/*])
325 ^((::[[:space:]]*)?[A-Za-z_][A-Za-z_0-9]*[[:space:]]*\(.*)$
326 ^((#define[[:space:]]|DEFUN).*)$'
327 git_config
diff.elisp.xfuncname \
328 '^\([^[:space:]]*def[^[:space:]]+[[:space:]]+([^()[:space:]]+)'
329 git_config
'diff.m4.xfuncname' '^((m4_)?define|A._DEFUN(_ONCE)?)\([^),]*'
330 git_config
'diff.make.xfuncname' \
331 '^([$.[:alnum:]_].*:|[[:alnum:]_]+[[:space:]]*([*:+]?[:?]?|!?)=|define .*)'
332 git_config
'diff.shell.xfuncname' \
333 '^([[:space:]]*[[:alpha:]_][[:alnum:]_]*[[:space:]]*\(\)|[[:alpha:]_][[:alnum:]_]*=)'
334 git_config
diff.texinfo.xfuncname \
335 '^@node[[:space:]]+([^,[:space:]][^,]+)'
343 for hook
in commit-msg pre-commit prepare-commit-msg
; do
344 cmp -- build-aux
/git-hooks
/$hook "$hooks/$hook" >/dev
/null
2>&1 ||
345 tailored_hooks
="$tailored_hooks $hook"
348 git_sample_hook_src
()
351 src
=$hooks/$hook.sample
352 if test ! -r "$src"; then
354 applypatch-msg
) src
=build-aux
/git-hooks
/commit-msg
;;
355 pre-applypatch
) src
=build-aux
/git-hooks
/pre-commit
;;
359 for hook
in applypatch-msg pre-applypatch
; do
360 git_sample_hook_src
$hook
361 cmp -- "$src" "$hooks/$hook" >/dev
/null
2>&1 ||
362 sample_hooks
="$sample_hooks $hook"
365 if test -n "$tailored_hooks$sample_hooks"; then
367 echo "Installing git hooks..."
369 if test ! -d "$hooks"; then
370 printf "mkdir -p -- '%s'\\n" "$hooks"
371 mkdir
-p -- "$hooks" ||
exit
374 if test -n "$tailored_hooks"; then
375 for hook
in $tailored_hooks; do
377 cp $cp_options -- build-aux
/git-hooks
/$hook "$dst" ||
exit
378 chmod -- a-w
"$dst" ||
exit
382 if test -n "$sample_hooks"; then
383 for hook
in $sample_hooks; do
384 git_sample_hook_src
$hook
386 cp $cp_options -- "$src" "$dst" ||
exit
387 chmod -- a-w
"$dst" ||
exit
395 if test ! -f configure
; then
396 echo "You can now run '$0 autoconf'."
397 elif test -r .git
&& test $git_was_ok = false
&& test $do_git = false
; then
398 echo "You can now run '$0 git'."
399 elif test ! -f config.status ||
400 test -n "`find configure src/config.in -newer config.status`"; then
401 echo "You can now run './configure'."
406 ### autogen.sh ends here