1 # =========================================================================== 2 # http://www.gnu.org/software/autoconf-archive/ax_configure_args.html 3 # =========================================================================== 4 # 5 # SYNOPSIS 6 # 7 # AX_CONFIGURE_ARGS 8 # 9 # DESCRIPTION 10 # 11 # Helper macro for AX_ENABLE_BUILDDIR. 12 # 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. 19 # 20 # Sadly, the traditional "exec $SHELL" of the enable_builddir macros is 21 # spoiled now and must be replaced by "eval + exit $?". 22 # 23 # Example: 24 # 25 # AC_DEFUN([AX_ENABLE_SUBDIR],[dnl 26 # AC_REQUIRE([AX_CONFIGURE_ARGS])dnl 27 # eval $SHELL $ac_configure_args || exit $? 28 # ...]) 29 # 30 # LICENSE 31 # 32 # Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> 33 # 34 # This program is free software; you can redistribute it and/or modify it 35 # under the terms of the GNU General Public License as published by the 36 # Free Software Foundation; either version 3 of the License, or (at your 37 # option) any later version. 38 # 39 # This program is distributed in the hope that it will be useful, but 40 # WITHOUT ANY WARRANTY; without even the implied warranty of 41 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 42 # Public License for more details. 43 # 44 # You should have received a copy of the GNU General Public License along 45 # with this program. If not, see <http://www.gnu.org/licenses/>. 46 # 47 # As a special exception, the respective Autoconf Macro's copyright owner 48 # gives unlimited permission to copy, distribute and modify the configure 49 # scripts that are the output of Autoconf when processing the Macro. You 50 # need not follow the terms of the GNU General Public License when using 51 # or distributing such scripts, even though portions of the text of the 52 # Macro appear in them. The GNU General Public License (GPL) does govern 53 # all other use of the material that constitutes the Autoconf Macro. 54 # 55 # This special exception to the GPL applies to versions of the Autoconf 56 # Macro released by the Autoconf Archive. When you make and distribute a 57 # modified version of the Autoconf Macro, you may extend this special 58 # exception to the GPL to apply to your modified version as well. 59 60 #serial 9 61 62 AC_DEFUN([AX_CONFIGURE_ARGS],[ 63 # [$]@ is unsable in 2.60+ but earlier autoconf had no ac_configure_args 64 if test "${ac_configure_args+set}" != "set" ; then 65 ac_configure_args= 66 for ac_arg in ${1+"[$]@"}; do 67 ac_configure_args="$ac_configure_args '$ac_arg'" 68 done 69 fi 70 ])
