ax_configure_args
=================

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 $?
         ...])

Source Code
***********

Download the latest version of ax_configure_args.m4 (http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=blob_plain;f=m4/ax_configure_args.m4) or browse the macro's revision history (http://git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=history;f=m4/ax_configure_args.m4).

License
*******

Copyright © 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.