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kc3-lang/libffi/m4/ax_configure_args.m4

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  • Author : Anthony Green
    Date : 2013-01-02 08:28:35
    Hash : 8bad679a
    Message : New stand-alone patch

  • m4/ax_configure_args.m4
  • # ===========================================================================
    #     http://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 <http://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 9
    
    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
    ])