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# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_configure_args.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CONFIGURE_ARGS
#
# DESCRIPTION
#
# Helper macro for AX_ENABLE_BUILDDIR.
#
# The traditional way of starting a subdir-configure is running the script
# with ${1+"$@"} but since autoconf 2.60 this is broken. Instead we have
# to rely on eval'ing $ac_configure_args however some old autoconf
# versions do not provide that. To ensure maximum portability of autoconf
# extension macros this helper can be AC_REQUIRE'd so that
# $ac_configure_args will alsways be present.
#
# Sadly, the traditional "exec $SHELL" of the enable_builddir macros is
# spoiled now and must be replaced by "eval + exit $?".
#
# Example:
#
# AC_DEFUN([AX_ENABLE_SUBDIR],[dnl
# AC_REQUIRE([AX_CONFIGURE_ARGS])dnl
# eval $SHELL $ac_configure_args || exit $?
# ...])
#
# LICENSE
#
# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <https://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the Macro. You
# need not follow the terms of the GNU General Public License when using
# or distributing such scripts, even though portions of the text of the
# Macro appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes the Autoconf Macro.
#
# This special exception to the GPL applies to versions of the Autoconf
# Macro released by the Autoconf Archive. When you make and distribute a
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 10
AC_DEFUN([AX_CONFIGURE_ARGS],[
# [$]@ is unsable in 2.60+ but earlier autoconf had no ac_configure_args
if test "${ac_configure_args+set}" != "set" ; then
ac_configure_args=
for ac_arg in ${1+"[$]@"}; do
ac_configure_args="$ac_configure_args '$ac_arg'"
done
fi
])
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