mirror of
https://git.savannah.gnu.org/git/emacs.git
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589094a489
* autogen.sh: Do not assume that the hook samples exist. This ports to git version 1.9.3 (Apple Git-50). For some reason Apple decided to populate the git hooks directory in a different way from the way that standard Git does it. The downside is that patch applications won't be checked on Apple, but that's better than autogen.sh failing. Problem reported by Sam Steingold in: http://lists.gnu.org/archive/html/emacs-devel/2015-01/msg00898.html
265 lines
6.8 KiB
Bash
Executable File
265 lines
6.8 KiB
Bash
Executable File
#!/bin/sh
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### autogen.sh - tool to help build Emacs from a repository checkout
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## Copyright (C) 2011-2015 Free Software Foundation, Inc.
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## Author: Glenn Morris <rgm@gnu.org>
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## Maintainer: emacs-devel@gnu.org
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## This file is part of GNU Emacs.
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## GNU Emacs is free software: you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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## GNU Emacs is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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## You should have received a copy of the GNU General Public License
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## along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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### Commentary:
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## The Emacs repository does not include the configure script (and
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## associated helpers). The first time you fetch Emacs from the repo,
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## run this script to generate the necessary files.
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## For more details, see the file INSTALL.REPO.
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### Code:
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## Tools we need:
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## Note that we respect the values of AUTOCONF etc, like autoreconf does.
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progs="autoconf automake"
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## Minimum versions we need:
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autoconf_min=`sed -n 's/^ *AC_PREREQ(\([0-9\.]*\)).*/\1/p' configure.ac`
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## This will need improving if more options are ever added to the
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## AM_INIT_AUTOMAKE call.
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automake_min=`sed -n 's/^ *AM_INIT_AUTOMAKE(\([0-9\.]*\)).*/\1/p' configure.ac`
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## $1 = program, eg "autoconf".
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## Echo the version string, eg "2.59".
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## FIXME does not handle things like "1.4a", but AFAIK those are
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## all old versions, so it is OK to fail there.
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## Also note that we do not handle micro versions.
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get_version ()
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{
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## Remove eg "./autogen.sh: line 50: autoconf: command not found".
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$1 --version 2>&1 | sed -e '/not found/d' -e 's/.* //' -n -e '1 s/\([0-9][0-9\.]*\).*/\1/p'
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}
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## $1 = version string, eg "2.59"
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## Echo the major version, eg "2".
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major_version ()
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{
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echo $1 | sed -e 's/\([0-9][0-9]*\)\..*/\1/'
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}
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## $1 = version string, eg "2.59"
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## Echo the minor version, eg "59".
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minor_version ()
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{
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echo $1 | sed -e 's/[0-9][0-9]*\.\([0-9][0-9]*\).*/\1/'
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}
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## $1 = program
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## $2 = minimum version.
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## Return 0 if program is present with version >= minimum version.
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## Return 1 if program is missing.
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## Return 2 if program is present but too old.
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## Return 3 for unexpected error (eg failed to parse version).
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check_version ()
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{
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## Respect eg $AUTOMAKE if it is set, like autoreconf does.
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uprog=`echo $1 | sed -e 's/-/_/g' -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
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eval uprog=\$${uprog}
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[ x"$uprog" = x ] && uprog=$1
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have_version=`get_version $uprog`
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[ x"$have_version" = x ] && return 1
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have_maj=`major_version $have_version`
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need_maj=`major_version $2`
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[ x"$have_maj" != x ] && [ x"$need_maj" != x ] || return 3
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[ $have_maj -gt $need_maj ] && return 0
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[ $have_maj -lt $need_maj ] && return 2
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have_min=`minor_version $have_version`
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need_min=`minor_version $2`
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[ x"$have_min" != x ] && [ x"$need_min" != x ] || return 3
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[ $have_min -ge $need_min ] && return 0
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return 2
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}
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cat <<EOF
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Checking whether you have the necessary tools...
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(Read INSTALL.REPO for more details on building Emacs)
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EOF
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missing=
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for prog in $progs; do
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sprog=`echo "$prog" | sed 's/-/_/g'`
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eval min=\$${sprog}_min
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echo "Checking for $prog (need at least version $min)..."
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check_version $prog $min
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retval=$?
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case $retval in
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0) stat="ok" ;;
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1) stat="missing" ;;
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2) stat="too old" ;;
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*) stat="unable to check" ;;
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esac
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echo $stat
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if [ $retval -ne 0 ]; then
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missing="$missing $prog"
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eval ${sprog}_why=\""$stat"\"
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fi
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done
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if [ x"$missing" != x ]; then
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cat <<EOF
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Building Emacs from the repository requires the following specialized programs:
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EOF
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for prog in $progs; do
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sprog=`echo "$prog" | sed 's/-/_/g'`
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eval min=\$${sprog}_min
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echo "$prog (minimum version $min)"
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done
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cat <<EOF
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Your system seems to be missing the following tool(s):
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EOF
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for prog in $missing; do
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sprog=`echo "$prog" | sed 's/-/_/g'`
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eval why=\$${sprog}_why
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echo "$prog ($why)"
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done
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cat <<EOF
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If you think you have the required tools, please add them to your PATH
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and re-run this script.
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Otherwise, please try installing them.
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On systems using rpm and yum, try: "yum install PACKAGE"
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On systems using dpkg and apt, try: "apt-get install PACKAGE"
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Then re-run this script.
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If you do not have permission to do this, or if the version provided
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by your system is too old, it is normally straightforward to build
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these packages from source. You can find the sources at:
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ftp://ftp.gnu.org/gnu/PACKAGE/
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Download the package (make sure you get at least the minimum version
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listed above), extract it using tar, then run configure, make,
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make install. Add the installation directory to your PATH and re-run
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this script.
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If you know that the required versions are in your PATH, but this
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script has made an error, then you can simply run
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autoreconf -fi -I m4
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instead of this script.
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Please report any problems with this script to bug-gnu-emacs@gnu.org .
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EOF
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exit 1
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fi
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echo 'Your system has the required tools.'
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echo "Running 'autoreconf -fi -I m4' ..."
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## Let autoreconf figure out what, if anything, needs doing.
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## Use autoreconf's -f option in case autoreconf itself has changed.
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autoreconf -fi -I m4 || exit $?
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## Create a timestamp, so that './autogen.sh; make' doesn't
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## cause 'make' to needlessly run 'autoheader'.
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echo timestamp > src/stamp-h.in || exit
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## Install Git hooks, if using Git.
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if test -d .git/hooks; then
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tailored_hooks=
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sample_hooks=
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for hook in commit-msg pre-commit; do
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cmp build-aux/git-hooks/$hook .git/hooks/$hook >/dev/null 2>&1 ||
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tailored_hooks="$tailored_hooks $hook"
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done
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for hook in applypatch-msg pre-applypatch; do
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test ! -r .git/hooks/$hook.sample ||
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cmp .git/hooks/$hook.sample .git/hooks/$hook >/dev/null 2>&1 ||
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sample_hooks="$sample_hooks $hook"
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done
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if test -n "$tailored_hooks$sample_hooks"; then
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echo "Installing git hooks..."
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case `cp --help 2>/dev/null` in
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*--backup*--verbose*)
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cp_options='--backup=numbered --verbose';;
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*)
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cp_options='-f';;
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esac
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if test -n "$tailored_hooks"; then
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for hook in $tailored_hooks; do
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cp $cp_options build-aux/git-hooks/$hook .git/hooks || exit
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chmod a-w .git/hooks/$hook || exit
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done
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fi
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if test -n "$sample_hooks"; then
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for hook in $sample_hooks; do
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cp $cp_options .git/hooks/$hook.sample .git/hooks/$hook || exit
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chmod a-w .git/hooks/$hook || exit
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done
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fi
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fi
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fi
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echo "You can now run './configure'."
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exit 0
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### autogen.sh ends here
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