2 # Process this file with autoconf to produce a configure script.
4 # Copyright (C) 1992, 1993, 1994, 1995, 1999, 2000, 2001, 2002, 2003,
5 # 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation, either version 3 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 # We need AC_CONFIG_TESTDIR, AC_PROG_SED, AC_PROG_GREP.
23 AC_INIT([GNU Autoconf],
24 m4_esyscmd([build-aux/git-version-gen .tarball-version]),
25 [bug-autoconf@gnu.org])
26 AC_CONFIG_SRCDIR([ChangeLog])
28 AC_CONFIG_AUX_DIR([build-aux])
30 AM_INIT_AUTOMAKE([1.10 dist-bzip2 readme-alpha no-texinfo.tex std-options])
32 # We use `/bin/sh -n script' to check that there are no syntax errors
33 # in the scripts. Although incredible, there are /bin/sh that go into
34 # endless loops with `-n', e.g., SunOS's:
37 # SunOS ondine 4.1.3 2 sun4m unknown
44 # $ time sh endless.sh
45 # sh endless.sh 0,02s user 0,03s system 78% cpu 0,064 total
46 # $ time sh -nx endless.sh
47 # ^Csh -nx endless.sh 3,67s user 0,03s system 63% cpu 5,868 total
49 # Also, some implementations of /bin/sh (e.g., Solaris 8) are soooo slow
50 # that they are unusable on large scripts like our testsuite.
52 # So before using `/bin/sh -n' to check our scripts, we first check
53 # that `/bin/sh -n' is known to not have these problems.
55 AC_CACHE_CHECK([whether /bin/sh -n is known to work], [ac_cv_sh_n_works],
57 unset BASH_VERSION ZSH_VERSION
59 test -n "${BASH_VERSION+set}" || # Bash
60 test -n "${KSH_VERSION+set}" || # pdksh
61 test -n "${ZSH_VERSION+set}" || # zsh
62 test -n "${.sh.version}" # ksh93; put this last since its syntax is dodgy
65 then ac_cv_sh_n_works=yes
66 else ac_cv_sh_n_works=no
69 AC_SUBST([ac_cv_sh_n_works])
71 # Initialize the test suite.
72 AC_CONFIG_TESTDIR([tests])
73 AC_CONFIG_FILES([tests/Makefile tests/atlocal])
74 AC_PATH_PROG([EXPR], [expr])
81 # We use an absolute name for GNU m4 so even if users have another m4 first in
82 # their path, the installer can configure with a path that has GNU m4
83 # on it and get that path embedded in the installed autoconf and
91 AC_CONFIG_FILES([man/Makefile])
92 AM_MISSING_PROG([HELP2MAN], [help2man])
99 # We use an absolute name for perl so the #! line in autoscan will work.
100 AC_PATH_PROG([PERL], [perl], [no])
102 if test "$PERL" = no; then
103 AC_MSG_ERROR([perl is not found])
105 $PERL -e 'require 5.005_03;' || {
106 AC_MSG_ERROR([Perl 5.005_03 or better is required])
114 AC_CONFIG_FILES([lib/emacs/Makefile])
116 test x"$TEST_EMACS" = xt && TEST_EMACS=
117 AC_CHECK_PROGS([TEST_EMACS], [emacs xemacs], [no])
119 # autoconf-mode.el and autotest-mode.el do not work with older version of
120 # Emacs (i.e. 18.x.x). During byte-compilation, Emacs complains:
121 # "Variable (broken nil) seen on pass 2 of byte compiler but not pass 1"
122 # We detect this problem here.
123 AS_IF([test "$TEST_EMACS" != no],
124 [AC_CACHE_CHECK([whether $TEST_EMACS is sufficiently recent],
125 [ac_cv_prog_emacs_ok],
126 [# Note: The quoted "EOF" is intentional. It protects the ` in the text.
127 cat >conftest.el << "EOF"
129 (defun broken-mode () (setq broken-defaults `(broken nil)))
132 [$TEST_EMACS -batch -q -f batch-byte-compile conftest.el 1>&2])],
133 [ac_cv_prog_emacs_ok=yes], [ac_cv_prog_emacs_ok=no])
134 rm -f conftest.el conftest.elc])
135 AS_IF([test $ac_cv_prog_emacs_ok = no], [TEST_EMACS=no])])
137 AC_SUBST([EMACS], [$TEST_EMACS])
154 dnl Allow maintainer rules under GNU make even in VPATH builds. This does
155 dnl not work in autoconf 2.61 or earlier, but we don't want to require
156 dnl unreleased autoconf during bootstrap, hence the version test.
157 dnl TODO remove the version check once we depend on autoconf 2.62.
158 dnl Meanwhile, we must use a shell variable so that we bypass automake's
159 dnl attempts to remove the sole copy of GNUmakefile in a non-VPATH build
160 dnl during 'make distclean'.
161 dnl TODO avoid the shell variable once automake is fixed.
162 GNUmakefile=GNUmakefile
163 m4_if(m4_version_compare([2.61a.100],
164 m4_defn([m4_PACKAGE_VERSION])), [1], [],
165 [AC_CONFIG_LINKS([$GNUmakefile:$GNUmakefile], [],
166 [GNUmakefile=$GNUmakefile])])
168 AC_CONFIG_FILES([Makefile doc/Makefile
169 lib/Makefile lib/Autom4te/Makefile lib/autoscan/Makefile
171 lib/autoconf/Makefile lib/autotest/Makefile
175 # Report the state of this version of Autoconf if this is a beta.
176 m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[a-z]],
179 You are about to use an experimental version of Autoconf. Be sure to
180 read the relevant mailing lists, most importantly <autoconf@gnu.org>.
182 Below you will find information on the status of this version of Autoconf.
186 sed -n '/^\* Status/,$p' $srcdir/BUGS