1 # ===========================================================================
2 # http://www.gnu.org/software/autoconf-archive/ax_configure_args.html
3 # ===========================================================================
11 # Helper macro for AX_ENABLE_BUILDDIR.
13 # The traditional way of starting a subdir-configure is running the script
14 # with ${1+"$@"} but since autoconf 2.60 this is broken. Instead we have
15 # to rely on eval'ing $ac_configure_args however some old autoconf
16 # versions do not provide that. To ensure maximum portability of autoconf
17 # extension macros this helper can be AC_REQUIRE'd so that
18 # $ac_configure_args will alsways be present.
20 # Sadly, the traditional "exec $SHELL" of the enable_builddir macros is
21 # spoiled now and must be replaced by "eval + exit $?".
25 # AC_DEFUN([AX_ENABLE_SUBDIR],[dnl
26 # AC_REQUIRE([AX_CONFIGURE_ARGS])dnl
27 # eval $SHELL $ac_configure_args || exit $?
32 # Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
34 # This program is free software; you can redistribute it and/or modify it
35 # under the terms of the GNU General Public License as published by the
36 # Free Software Foundation; either version 3 of the License, or (at your
37 # option) any later version.
39 # This program is distributed in the hope that it will be useful, but
40 # WITHOUT ANY WARRANTY; without even the implied warranty of
41 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
42 # Public License for more details.
44 # You should have received a copy of the GNU General Public License along
45 # with this program. If not, see <http://www.gnu.org/licenses/>.
47 # As a special exception, the respective Autoconf Macro's copyright owner
48 # gives unlimited permission to copy, distribute and modify the configure
49 # scripts that are the output of Autoconf when processing the Macro. You
50 # need not follow the terms of the GNU General Public License when using
51 # or distributing such scripts, even though portions of the text of the
52 # Macro appear in them. The GNU General Public License (GPL) does govern
53 # all other use of the material that constitutes the Autoconf Macro.
55 # This special exception to the GPL applies to versions of the Autoconf
56 # Macro released by the Autoconf Archive. When you make and distribute a
57 # modified version of the Autoconf Macro, you may extend this special
58 # exception to the GPL to apply to your modified version as well.
62 AC_DEFUN([AX_CONFIGURE_ARGS],[
63 # [$]@ is unsable in 2.60+ but earlier autoconf had no ac_configure_args
64 if test "${ac_configure_args+set}" != "set" ; then
66 for ac_arg in ${1+"[$]@"}; do
67 ac_configure_args="$ac_configure_args '$ac_arg'"