Index: configure.ac
===================================================================
RCS file: /cvsroot/audacity/lib-src/portsmf/configure.ac,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- configure.ac	14 Jul 2008 19:37:22 -0000	1.1
+++ configure.ac	20 Sep 2008 19:11:13 -0000	1.2
@@ -13,13 +13,17 @@
 
 dnl Process this file with autoconf to produce a configure script.
 
-dnl Require autoconf >= 2.60
+dnl Require autoconf >= 2.61
 AC_PREREQ(2.61)
 
 dnl Init autoconf and automake
 AC_INIT([portSMF],[0.1])
+dnl check that we have some source code
+AC_CONFIG_SRCDIR([allegro.h])
 dnl keep autools files in a subdirectory
 AC_CONFIG_AUX_DIR(autotools)
+# which also contains a subdir containing macros
+AC_CONFIG_MACRO_DIR([autotools/m4])
 AM_INIT_AUTOMAKE([-Wall foreign])
 
 dnl -------------------------------------------------------
Index: Makefile.am
===================================================================
RCS file: /cvsroot/audacity/lib-src/portsmf/Makefile.am,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- Makefile.am	14 Jul 2008 19:37:21 -0000	1.1
+++ Makefile.am	20 Sep 2008 19:11:13 -0000	1.2
@@ -1,7 +1,10 @@
 ## Process this file with automake to produce Makefile.in
 # Makefile(.in) for portSMF using Autotools (but not libtool).
 # Written by Richard Ash following Gary Vaughan's Autobook
-#
+
+# tell aclocal that extra macros can be found in autotools/m4/
+ACLOCAL_AMFLAGS = -I autotools/m4
+
 # define the output library (link with -lportSMF)
 lib_LIBRARIES = libportSMF.a
 
Index: autotools/m4/ax_cflags_strict_prototypes.m4
===================================================================
RCS file: autotools/m4/ax_cflags_strict_prototypes.m4
diff -N autotools/m4/ax_cflags_strict_prototypes.m4
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ autotools/m4/ax_cflags_strict_prototypes.m4	20 Sep 2008 19:11:14 -0000	1.1
@@ -0,0 +1,173 @@
+##### http://autoconf-archive.cryp.to/ax_cflags_strict_prototypes.html
+#
+# SYNOPSIS
+#
+#   AX_CFLAGS_STRICT_PROTOTYPES [(shellvar [,default, [A/NA]]
+#
+# DESCRIPTION
+#
+#   Try to find a compiler option that requires strict prototypes.
+#
+#   The sanity check is done by looking at sys/signal.h which has a set
+#   of macro-definitions SIG_DFL and SIG_IGN that are cast to the local
+#   signal-handler type. If that signal-handler type is not fully
+#   qualified then the system headers are not seen as strictly
+#   prototype clean.
+#
+#   For the GNU CC compiler it will be -fstrict-prototypes
+#   -Wstrict-prototypes The result is added to the shellvar being
+#   CFLAGS by default.
+#
+#   DEFAULTS:
+#
+#    - $1 shell-variable-to-add-to : CFLAGS
+#    - $2 add-value-if-not-found : nothing
+#    - $3 action-if-found : add value to shellvariable
+#    - $4 action-if-not-found : nothing
+#
+# LAST MODIFICATION
+#
+#   2006-12-12
+#
+# COPYLEFT
+#
+#   Copyright (c) 2006 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 2 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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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 Macro 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.
+
+AC_DEFUN([AX_CFLAGS_STRICT_PROTOTYPES],[dnl
+AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_strict_prototypes])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for strict prototypes],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_C
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic % -fstrict-prototypes -Wstrict-prototypes" dnl   GCC
+   "-pedantic % -Wstrict-prototypes" dnl try to warn atleast
+   "-pedantic % -Wmissing-prototypes" dnl or another warning
+   "-pedantic % -Werror-implicit-function-declaration" dnl
+   "-pedantic % -Wimplicit-function-declaration" dnl
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+case ".$VAR" in
+   .|.no|.no,*) ;;
+   *) # sanity check with signal() from sys/signal.h
+    cp config.log config.tmp
+    AC_TRY_COMPILE([#include <signal.h>],[
+    if (signal (SIGINT, SIG_IGN) == SIG_DFL) return 1;
+    if (signal (SIGINT, SIG_IGN) != SIG_DFL) return 2;],
+    dnl the original did use test -n `$CC testprogram.c`
+    [if test `diff config.log config.tmp | grep -i warning | wc -l` != 0
+then if test `diff config.log config.tmp | grep -i warning | wc -l` != 1
+then VAR="no, suppressed, signal.h," ; fi ; fi],
+    [VAR="no, suppressed, signal.h"])
+    rm config.tmp
+  ;;
+esac
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
+        AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+dnl the only difference - the LANG selection... and the default FLAGS
+
+AC_DEFUN([AX_CXXFLAGS_STRICT_PROTOTYPES],[dnl
+AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_strict_prototypes])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for strict prototypes],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic -Werror % -fstrict-prototypes -Wstrict-prototypes" dnl   GCC
+   "-pedantic -Werror % -Wstrict-prototypes" dnl try to warn atleast
+   "-pedantic -Werror % -Wmissing-prototypes" dnl try to warn atleast
+   "-pedantic -Werror % -Werror-implicit-function-declaration" dnl
+   "-pedantic -Werror % -Wimplicit-function-declaration" dnl
+   "-pedantic % -Wstrict-prototypes %% no, unsupported in C++" dnl oops
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+case ".$VAR" in
+   .|.no|.no,*) ;;
+   *) # sanity check with signal() from sys/signal.h
+    cp config.log config.tmp
+    AC_TRY_COMPILE([#include <signal.h>],[
+    if (signal (SIGINT, SIG_IGN) == SIG_DFL) return 1;
+    if (signal (SIGINT, SIG_IGN) != SIG_DFL) return 2;],
+    dnl the original did use test -n `$CC testprogram.c`
+    [if test `diff config.log config.tmp | grep -i warning | wc -l` != 0
+then if test `diff config.log config.tmp | grep -i warning | wc -l` != 1
+then VAR="no, suppressed, signal.h," ; fi ; fi],
+    [VAR="no, suppressed, signal.h"])
+    rm config.tmp
+  ;;
+esac
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
+        AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
Index: autotools/m4/ax_cflags_warn_all.m4
===================================================================
RCS file: autotools/m4/ax_cflags_warn_all.m4
diff -N autotools/m4/ax_cflags_warn_all.m4
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ autotools/m4/ax_cflags_warn_all.m4	20 Sep 2008 19:11:14 -0000	1.1
@@ -0,0 +1,158 @@
+##### http://autoconf-archive.cryp.to/ax_cflags_warn_all.html
+#
+# SYNOPSIS
+#
+#   AX_CFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])]
+#
+# DESCRIPTION
+#
+#   Try to find a compiler option that enables most reasonable
+#   warnings. This macro is directly derived from VL_PROG_CC_WARNINGS
+#   which is split up into two AX_CFLAGS_WARN_ALL and
+#   AX_CFLAGS_WARN_ALL_ANSI
+#
+#   For the GNU CC compiler it will be -Wall (and -ansi -pedantic) The
+#   result is added to the shellvar being CFLAGS by default.
+#
+#   Currently this macro knows about GCC, Solaris C compiler, Digital
+#   Unix C compiler, C for AIX Compiler, HP-UX C compiler, IRIX C
+#   compiler, NEC SX-5 (Super-UX 10) C compiler, and Cray J90 (Unicos
+#   10.0.0.8) C compiler.
+#
+#    - $1 shell-variable-to-add-to : CFLAGS
+#    - $2 add-value-if-not-found : nothing
+#    - $3 action-if-found : add value to shellvariable
+#    - $4 action-if-not-found : nothing
+#
+# LAST MODIFICATION
+#
+#   2006-12-12
+#
+# COPYLEFT
+#
+#   Copyright (c) 2006 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 2 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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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 Macro 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.
+
+AC_DEFUN([AX_CFLAGS_WARN_ALL],[dnl
+AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_warn_all])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for maximum warnings],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_C
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic  % -Wall"       dnl   GCC
+   "-xstrconst % -v"          dnl Solaris C
+   "-std1      % -verbose -w0 -warnprotos" dnl Digital Unix
+   "-qlanglvl=ansi % -qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" dnl AIX
+   "-ansi -ansiE % -fullwarn" dnl IRIX
+   "+ESlit     % +w1"         dnl HP-UX C
+   "-Xc        % -pvctl[,]fullmsg" dnl NEC SX-5 (Super-UX 10)
+   "-h conform % -h msglevel 2" dnl Cray C (Unicos)
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
+        AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+dnl the only difference - the LANG selection... and the default FLAGS
+
+AC_DEFUN([AX_CXXFLAGS_WARN_ALL],[dnl
+AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
+AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_warn_all])dnl
+AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for maximum warnings],
+VAR,[VAR="no, unknown"
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_[]FLAGS="$[]FLAGS"
+for ac_arg dnl
+in "-pedantic  % -Wall"       dnl   GCC
+   "-xstrconst % -v"          dnl Solaris C
+   "-std1      % -verbose -w0 -warnprotos" dnl Digital Unix
+   "-qlanglvl=ansi % -qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" dnl AIX
+   "-ansi -ansiE % -fullwarn" dnl IRIX
+   "+ESlit     % +w1"         dnl HP-UX C
+   "-Xc        % -pvctl[,]fullmsg" dnl NEC SX-5 (Super-UX 10)
+   "-h conform % -h msglevel 2" dnl Cray C (Unicos)
+   #
+do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
+   AC_TRY_COMPILE([],[return 0;],
+   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
+done
+ FLAGS="$ac_save_[]FLAGS"
+ AC_LANG_RESTORE
+])
+case ".$VAR" in
+     .ok|.ok,*) m4_ifvaln($3,$3) ;;
+   .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
+        AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
+   *) m4_ifvaln($3,$3,[
+   if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
+   then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
+   else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
+                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
+   fi ]) ;;
+esac
+AS_VAR_POPDEF([VAR])dnl
+AS_VAR_POPDEF([FLAGS])dnl
+])
+
+dnl  implementation tactics:
+dnl   the for-argument contains a list of options. The first part of
+dnl   these does only exist to detect the compiler - usually it is
+dnl   a global option to enable -ansi or -extrawarnings. All other
+dnl   compilers will fail about it. That was needed since a lot of
+dnl   compilers will give false positives for some option-syntax
+dnl   like -Woption or -Xoption as they think of it is a pass-through
+dnl   to later compile stages or something. The "%" is used as a
+dnl   delimimiter. A non-option comment can be given after "%%" marks
+dnl   which will be shown but not added to the respective C/CXXFLAGS.
Index: autotools/m4/ax_cxx_check_flag.m4
===================================================================
RCS file: autotools/m4/ax_cxx_check_flag.m4
diff -N autotools/m4/ax_cxx_check_flag.m4
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ autotools/m4/ax_cxx_check_flag.m4	20 Sep 2008 19:11:14 -0000	1.1
@@ -0,0 +1,90 @@
+##### http://autoconf-archive.cryp.to/ax_cxx_check_flag.html
+#
+# SYNOPSIS
+#
+#   AX_CXX_CHECK_FLAG(FLAG-TO-CHECK,[PROLOGUE],[BODY],[ACTION-IF-SUCCESS],[ACTION-IF-FAILURE])
+#
+# DESCRIPTION
+#
+#   This macro tests if the C++ compiler supports the flag
+#   FLAG-TO-CHECK. If successfull execute ACTION-IF-SUCCESS otherwise
+#   ACTION-IF-FAILURE. PROLOGUE and BODY are optional and should be
+#   used as in AC_LANG_PROGRAM macro.
+#
+#   This code is inspired from KDE_CHECK_COMPILER_FLAG macro. Thanks to
+#   Bogdan Drozdowski <bogdandr@op.pl> for testing and bug fixes.
+#
+# LAST MODIFICATION
+#
+#   2007-11-26
+#
+# COPYLEFT
+#
+#   Copyright (c) 2007 Francesco Salvestrini <salvestrini@users.sourceforge.net>
+#
+#   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 2 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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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 Macro 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.
+
+AC_DEFUN([AX_CXX_CHECK_FLAG],[
+  AC_PREREQ([2.61])
+  AC_REQUIRE([AC_PROG_CXX])
+  AC_REQUIRE([AC_PROG_SED])
+
+  flag=`echo "$1" | $SED 'y% .=/+-(){}<>:*,%_______________%'`
+
+  AC_CACHE_CHECK([whether the C++ compiler accepts the $1 flag],
+    [ax_cv_cxx_check_flag_$flag],[
+
+    AC_LANG_PUSH([C++])
+
+    save_CXXFLAGS="$CXXFLAGS"
+    CXXFLAGS="$CXXFLAGS $1"
+    AC_COMPILE_IFELSE([
+      AC_LANG_PROGRAM([$2],[$3])
+    ],[
+      eval "ax_cv_cxx_check_flag_$flag=yes"
+    ],[
+      eval "ax_cv_cxx_check_flag_$flag=no"
+    ])
+
+    CXXFLAGS="$save_CXXFLAGS"
+
+    AC_LANG_POP
+
+  ])
+
+  AS_IF([eval "test \"`echo '$ax_cv_cxx_check_flag_'$flag`\" = yes"],[
+    :
+    $4
+  ],[
+    :
+    $5
+  ])
+])
Index: autotools/m4/ax_cxxcpp_check_flag.m4
===================================================================
RCS file: autotools/m4/ax_cxxcpp_check_flag.m4
diff -N autotools/m4/ax_cxxcpp_check_flag.m4
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ autotools/m4/ax_cxxcpp_check_flag.m4	20 Sep 2008 19:11:14 -0000	1.1
@@ -0,0 +1,90 @@
+##### http://autoconf-archive.cryp.to/ax_cxxcpp_check_flag.html
+#
+# SYNOPSIS
+#
+#   AX_CXXCPP_CHECK_FLAG(FLAG-TO-CHECK,[PROLOGUE],[BODY],[ACTION-IF-SUCCESS],[ACTION-IF-FAILURE])
+#
+# DESCRIPTION
+#
+#   This macro tests if the C++ preprocessor supports the flag
+#   FLAG-TO-CHECK. If successfull execute ACTION-IF-SUCCESS otherwise
+#   ACTION-IF-FAILURE. PROLOGUE and BODY are optional and should be
+#   used as in AC_LANG_PROGRAM macro.
+#
+#   This code is inspired from KDE_CHECK_COMPILER_FLAG macro. Thanks to
+#   Bogdan Drozdowski <bogdandr@op.pl> for testing and bug fixes.
+#
+# LAST MODIFICATION
+#
+#   2007-11-26
+#
+# COPYLEFT
+#
+#   Copyright (c) 2007 Francesco Salvestrini <salvestrini@users.sourceforge.net>
+#
+#   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 2 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, write to the Free Software
+#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+#   02111-1307, USA.
+#
+#   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 Macro 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.
+
+AC_DEFUN([AX_CXXCPP_CHECK_FLAG],[
+  AC_PREREQ([2.61])
+  AC_REQUIRE([AC_PROG_CXXCPP])
+  AC_REQUIRE([AC_PROG_SED])
+
+  flag=`echo "$1" | $SED 'y% .=/+-(){}<>:*,%_______________%'`
+
+  AC_CACHE_CHECK([whether the C++ preprocessor accepts the $1 flag],
+    [ax_cv_cxxcpp_check_flag_$flag],[
+
+    AC_LANG_PUSH([C++])
+
+    save_CXXFLAGS="$CXXFLAGS"
+    CXXFLAGS="$CXXFLAGS $1"
+    AC_PREPROC_IFELSE([
+      AC_LANG_PROGRAM([$2],[$3])
+    ],[
+      eval "ax_cv_cxxcpp_check_flag_$flag=yes"
+    ],[
+      eval "ax_cv_cxxcpp_check_flag_$flag=no"
+    ])
+
+    CXXFLAGS="$save_CXXFLAGS"
+
+    AC_LANG_POP
+
+  ])
+
+  AS_IF([eval "test \"`echo '$ax_cv_cxxcpp_check_flag_'$flag`\" = yes"],[
+    :
+    $4
+  ],[
+    :
+    $5
+  ])
+])