null merge
diff --git a/Modules/_ctypes/libffi/aclocal.m4 b/Modules/_ctypes/libffi/aclocal.m4
index 376a8fb..8cc0cb4 100644
--- a/Modules/_ctypes/libffi/aclocal.m4
+++ b/Modules/_ctypes/libffi/aclocal.m4
@@ -20,6 +20,824 @@
 If you have problems, you may need to regenerate the build system entirely.
 To do so, use the procedure documented by the package, typically `autoreconf'.])])
 
+# ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*-
+#
+#   Copyright (C) 1999-2006, 2007, 2008, 2011 Free Software Foundation, Inc.
+#   Written by Thomas Tanner, 1999
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 18 LTDL_INIT
+
+# LT_CONFIG_LTDL_DIR(DIRECTORY, [LTDL-MODE])
+# ------------------------------------------
+# DIRECTORY contains the libltdl sources.  It is okay to call this
+# function multiple times, as long as the same DIRECTORY is always given.
+AC_DEFUN([LT_CONFIG_LTDL_DIR],
+[AC_BEFORE([$0], [LTDL_INIT])
+_$0($*)
+])# LT_CONFIG_LTDL_DIR
+
+# We break this out into a separate macro, so that we can call it safely
+# internally without being caught accidentally by the sed scan in libtoolize.
+m4_defun([_LT_CONFIG_LTDL_DIR],
+[dnl remove trailing slashes
+m4_pushdef([_ARG_DIR], m4_bpatsubst([$1], [/*$]))
+m4_case(_LTDL_DIR,
+	[], [dnl only set lt_ltdl_dir if _ARG_DIR is not simply `.'
+	     m4_if(_ARG_DIR, [.],
+	             [],
+		 [m4_define([_LTDL_DIR], _ARG_DIR)
+	          _LT_SHELL_INIT([lt_ltdl_dir=']_ARG_DIR['])])],
+    [m4_if(_ARG_DIR, _LTDL_DIR,
+	    [],
+	[m4_fatal([multiple libltdl directories: `]_LTDL_DIR[', `]_ARG_DIR['])])])
+m4_popdef([_ARG_DIR])
+])# _LT_CONFIG_LTDL_DIR
+
+# Initialise:
+m4_define([_LTDL_DIR], [])
+
+
+# _LT_BUILD_PREFIX
+# ----------------
+# If Autoconf is new enough, expand to `${top_build_prefix}', otherwise
+# to `${top_builddir}/'.
+m4_define([_LT_BUILD_PREFIX],
+[m4_ifdef([AC_AUTOCONF_VERSION],
+   [m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]), [2.62]),
+	  [-1], [m4_ifdef([_AC_HAVE_TOP_BUILD_PREFIX],
+			  [${top_build_prefix}],
+			  [${top_builddir}/])],
+	  [${top_build_prefix}])],
+   [${top_builddir}/])[]dnl
+])
+
+
+# LTDL_CONVENIENCE
+# ----------------
+# sets LIBLTDL to the link flags for the libltdl convenience library and
+# LTDLINCL to the include flags for the libltdl header and adds
+# --enable-ltdl-convenience to the configure arguments.  Note that
+# AC_CONFIG_SUBDIRS is not called here.  LIBLTDL will be prefixed with
+# '${top_build_prefix}' if available, otherwise with '${top_builddir}/',
+# and LTDLINCL will be prefixed with '${top_srcdir}/' (note the single
+# quotes!).  If your package is not flat and you're not using automake,
+# define top_build_prefix, top_builddir, and top_srcdir appropriately
+# in your Makefiles.
+AC_DEFUN([LTDL_CONVENIENCE],
+[AC_BEFORE([$0], [LTDL_INIT])dnl
+dnl Although the argument is deprecated and no longer documented,
+dnl LTDL_CONVENIENCE used to take a DIRECTORY orgument, if we have one
+dnl here make sure it is the same as any other declaration of libltdl's
+dnl location!  This also ensures lt_ltdl_dir is set when configure.ac is
+dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
+m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl
+_$0()
+])# LTDL_CONVENIENCE
+
+# AC_LIBLTDL_CONVENIENCE accepted a directory argument in older libtools,
+# now we have LT_CONFIG_LTDL_DIR:
+AU_DEFUN([AC_LIBLTDL_CONVENIENCE],
+[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
+_LTDL_CONVENIENCE])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBLTDL_CONVENIENCE], [])
+
+
+# _LTDL_CONVENIENCE
+# -----------------
+# Code shared by LTDL_CONVENIENCE and LTDL_INIT([convenience]).
+m4_defun([_LTDL_CONVENIENCE],
+[case $enable_ltdl_convenience in
+  no) AC_MSG_ERROR([this package needs a convenience libltdl]) ;;
+  "") enable_ltdl_convenience=yes
+      ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;;
+esac
+LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdlc.la"
+LTDLDEPS=$LIBLTDL
+LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}"
+
+AC_SUBST([LIBLTDL])
+AC_SUBST([LTDLDEPS])
+AC_SUBST([LTDLINCL])
+
+# For backwards non-gettext consistent compatibility...
+INCLTDL="$LTDLINCL"
+AC_SUBST([INCLTDL])
+])# _LTDL_CONVENIENCE
+
+
+# LTDL_INSTALLABLE
+# ----------------
+# sets LIBLTDL to the link flags for the libltdl installable library
+# and LTDLINCL to the include flags for the libltdl header and adds
+# --enable-ltdl-install to the configure arguments.  Note that
+# AC_CONFIG_SUBDIRS is not called from here.  If an installed libltdl
+# is not found, LIBLTDL will be prefixed with '${top_build_prefix}' if
+# available, otherwise with '${top_builddir}/', and LTDLINCL will be
+# prefixed with '${top_srcdir}/' (note the single quotes!).  If your
+# package is not flat and you're not using automake, define top_build_prefix,
+# top_builddir, and top_srcdir appropriately in your Makefiles.
+# In the future, this macro may have to be called after LT_INIT.
+AC_DEFUN([LTDL_INSTALLABLE],
+[AC_BEFORE([$0], [LTDL_INIT])dnl
+dnl Although the argument is deprecated and no longer documented,
+dnl LTDL_INSTALLABLE used to take a DIRECTORY orgument, if we have one
+dnl here make sure it is the same as any other declaration of libltdl's
+dnl location!  This also ensures lt_ltdl_dir is set when configure.ac is
+dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
+m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl
+_$0()
+])# LTDL_INSTALLABLE
+
+# AC_LIBLTDL_INSTALLABLE accepted a directory argument in older libtools,
+# now we have LT_CONFIG_LTDL_DIR:
+AU_DEFUN([AC_LIBLTDL_INSTALLABLE],
+[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
+_LTDL_INSTALLABLE])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBLTDL_INSTALLABLE], [])
+
+
+# _LTDL_INSTALLABLE
+# -----------------
+# Code shared by LTDL_INSTALLABLE and LTDL_INIT([installable]).
+m4_defun([_LTDL_INSTALLABLE],
+[if test -f $prefix/lib/libltdl.la; then
+  lt_save_LDFLAGS="$LDFLAGS"
+  LDFLAGS="-L$prefix/lib $LDFLAGS"
+  AC_CHECK_LIB([ltdl], [lt_dlinit], [lt_lib_ltdl=yes])
+  LDFLAGS="$lt_save_LDFLAGS"
+  if test x"${lt_lib_ltdl-no}" = xyes; then
+    if test x"$enable_ltdl_install" != xyes; then
+      # Don't overwrite $prefix/lib/libltdl.la without --enable-ltdl-install
+      AC_MSG_WARN([not overwriting libltdl at $prefix, force with `--enable-ltdl-install'])
+      enable_ltdl_install=no
+    fi
+  elif test x"$enable_ltdl_install" = xno; then
+    AC_MSG_WARN([libltdl not installed, but installation disabled])
+  fi
+fi
+
+# If configure.ac declared an installable ltdl, and the user didn't override
+# with --disable-ltdl-install, we will install the shipped libltdl.
+case $enable_ltdl_install in
+  no) ac_configure_args="$ac_configure_args --enable-ltdl-install=no"
+      LIBLTDL="-lltdl"
+      LTDLDEPS=
+      LTDLINCL=
+      ;;
+  *)  enable_ltdl_install=yes
+      ac_configure_args="$ac_configure_args --enable-ltdl-install"
+      LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdl.la"
+      LTDLDEPS=$LIBLTDL
+      LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}"
+      ;;
+esac
+
+AC_SUBST([LIBLTDL])
+AC_SUBST([LTDLDEPS])
+AC_SUBST([LTDLINCL])
+
+# For backwards non-gettext consistent compatibility...
+INCLTDL="$LTDLINCL"
+AC_SUBST([INCLTDL])
+])# LTDL_INSTALLABLE
+
+
+# _LTDL_MODE_DISPATCH
+# -------------------
+m4_define([_LTDL_MODE_DISPATCH],
+[dnl If _LTDL_DIR is `.', then we are configuring libltdl itself:
+m4_if(_LTDL_DIR, [],
+	[],
+    dnl if _LTDL_MODE was not set already, the default value is `subproject':
+    [m4_case(m4_default(_LTDL_MODE, [subproject]),
+	  [subproject], [AC_CONFIG_SUBDIRS(_LTDL_DIR)
+			  _LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"])],
+	  [nonrecursive], [_LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"; lt_libobj_prefix="$lt_ltdl_dir/"])],
+	  [recursive], [],
+	[m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])dnl
+dnl Be careful not to expand twice:
+m4_define([$0], [])
+])# _LTDL_MODE_DISPATCH
+
+
+# _LT_LIBOBJ(MODULE_NAME)
+# -----------------------
+# Like AC_LIBOBJ, except that MODULE_NAME goes into _LT_LIBOBJS instead
+# of into LIBOBJS.
+AC_DEFUN([_LT_LIBOBJ], [
+  m4_pattern_allow([^_LT_LIBOBJS$])
+  _LT_LIBOBJS="$_LT_LIBOBJS $1.$ac_objext"
+])# _LT_LIBOBJS
+
+
+# LTDL_INIT([OPTIONS])
+# --------------------
+# Clients of libltdl can use this macro to allow the installer to
+# choose between a shipped copy of the ltdl sources or a preinstalled
+# version of the library.  If the shipped ltdl sources are not in a
+# subdirectory named libltdl, the directory name must be given by
+# LT_CONFIG_LTDL_DIR.
+AC_DEFUN([LTDL_INIT],
+[dnl Parse OPTIONS
+_LT_SET_OPTIONS([$0], [$1])
+
+dnl We need to keep our own list of libobjs separate from our parent project,
+dnl and the easiest way to do that is redefine the AC_LIBOBJs macro while
+dnl we look for our own LIBOBJs.
+m4_pushdef([AC_LIBOBJ], m4_defn([_LT_LIBOBJ]))
+m4_pushdef([AC_LIBSOURCES])
+
+dnl If not otherwise defined, default to the 1.5.x compatible subproject mode:
+m4_if(_LTDL_MODE, [],
+        [m4_define([_LTDL_MODE], m4_default([$2], [subproject]))
+        m4_if([-1], [m4_bregexp(_LTDL_MODE, [\(subproject\|\(non\)?recursive\)])],
+                [m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])
+
+AC_ARG_WITH([included_ltdl],
+    [AS_HELP_STRING([--with-included-ltdl],
+                    [use the GNU ltdl sources included here])])
+
+if test "x$with_included_ltdl" != xyes; then
+  # We are not being forced to use the included libltdl sources, so
+  # decide whether there is a useful installed version we can use.
+  AC_CHECK_HEADER([ltdl.h],
+      [AC_CHECK_DECL([lt_dlinterface_register],
+	   [AC_CHECK_LIB([ltdl], [lt_dladvise_preload],
+	       [with_included_ltdl=no],
+	       [with_included_ltdl=yes])],
+	   [with_included_ltdl=yes],
+	   [AC_INCLUDES_DEFAULT
+	    #include <ltdl.h>])],
+      [with_included_ltdl=yes],
+      [AC_INCLUDES_DEFAULT]
+  )
+fi
+
+dnl If neither LT_CONFIG_LTDL_DIR, LTDL_CONVENIENCE nor LTDL_INSTALLABLE
+dnl was called yet, then for old times' sake, we assume libltdl is in an
+dnl eponymous directory:
+AC_PROVIDE_IFELSE([LT_CONFIG_LTDL_DIR], [], [_LT_CONFIG_LTDL_DIR([libltdl])])
+
+AC_ARG_WITH([ltdl_include],
+    [AS_HELP_STRING([--with-ltdl-include=DIR],
+                    [use the ltdl headers installed in DIR])])
+
+if test -n "$with_ltdl_include"; then
+  if test -f "$with_ltdl_include/ltdl.h"; then :
+  else
+    AC_MSG_ERROR([invalid ltdl include directory: `$with_ltdl_include'])
+  fi
+else
+  with_ltdl_include=no
+fi
+
+AC_ARG_WITH([ltdl_lib],
+    [AS_HELP_STRING([--with-ltdl-lib=DIR],
+                    [use the libltdl.la installed in DIR])])
+
+if test -n "$with_ltdl_lib"; then
+  if test -f "$with_ltdl_lib/libltdl.la"; then :
+  else
+    AC_MSG_ERROR([invalid ltdl library directory: `$with_ltdl_lib'])
+  fi
+else
+  with_ltdl_lib=no
+fi
+
+case ,$with_included_ltdl,$with_ltdl_include,$with_ltdl_lib, in
+  ,yes,no,no,)
+	m4_case(m4_default(_LTDL_TYPE, [convenience]),
+	    [convenience], [_LTDL_CONVENIENCE],
+	    [installable], [_LTDL_INSTALLABLE],
+	  [m4_fatal([unknown libltdl build type: ]_LTDL_TYPE)])
+	;;
+  ,no,no,no,)
+	# If the included ltdl is not to be used, then use the
+	# preinstalled libltdl we found.
+	AC_DEFINE([HAVE_LTDL], [1],
+	  [Define this if a modern libltdl is already installed])
+	LIBLTDL=-lltdl
+	LTDLDEPS=
+	LTDLINCL=
+	;;
+  ,no*,no,*)
+	AC_MSG_ERROR([`--with-ltdl-include' and `--with-ltdl-lib' options must be used together])
+	;;
+  *)	with_included_ltdl=no
+	LIBLTDL="-L$with_ltdl_lib -lltdl"
+	LTDLDEPS=
+	LTDLINCL="-I$with_ltdl_include"
+	;;
+esac
+INCLTDL="$LTDLINCL"
+
+# Report our decision...
+AC_MSG_CHECKING([where to find libltdl headers])
+AC_MSG_RESULT([$LTDLINCL])
+AC_MSG_CHECKING([where to find libltdl library])
+AC_MSG_RESULT([$LIBLTDL])
+
+_LTDL_SETUP
+
+dnl restore autoconf definition.
+m4_popdef([AC_LIBOBJ])
+m4_popdef([AC_LIBSOURCES])
+
+AC_CONFIG_COMMANDS_PRE([
+    _ltdl_libobjs=
+    _ltdl_ltlibobjs=
+    if test -n "$_LT_LIBOBJS"; then
+      # Remove the extension.
+      _lt_sed_drop_objext='s/\.o$//;s/\.obj$//'
+      for i in `for i in $_LT_LIBOBJS; do echo "$i"; done | sed "$_lt_sed_drop_objext" | sort -u`; do
+        _ltdl_libobjs="$_ltdl_libobjs $lt_libobj_prefix$i.$ac_objext"
+        _ltdl_ltlibobjs="$_ltdl_ltlibobjs $lt_libobj_prefix$i.lo"
+      done
+    fi
+    AC_SUBST([ltdl_LIBOBJS], [$_ltdl_libobjs])
+    AC_SUBST([ltdl_LTLIBOBJS], [$_ltdl_ltlibobjs])
+])
+
+# Only expand once:
+m4_define([LTDL_INIT])
+])# LTDL_INIT
+
+# Old names:
+AU_DEFUN([AC_LIB_LTDL], [LTDL_INIT($@)])
+AU_DEFUN([AC_WITH_LTDL], [LTDL_INIT($@)])
+AU_DEFUN([LT_WITH_LTDL], [LTDL_INIT($@)])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIB_LTDL], [])
+dnl AC_DEFUN([AC_WITH_LTDL], [])
+dnl AC_DEFUN([LT_WITH_LTDL], [])
+
+
+# _LTDL_SETUP
+# -----------
+# Perform all the checks necessary for compilation of the ltdl objects
+#  -- including compiler checks and header checks.  This is a public
+# interface  mainly for the benefit of libltdl's own configure.ac, most
+# other users should call LTDL_INIT instead.
+AC_DEFUN([_LTDL_SETUP],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([LT_SYS_MODULE_EXT])dnl
+AC_REQUIRE([LT_SYS_MODULE_PATH])dnl
+AC_REQUIRE([LT_SYS_DLSEARCH_PATH])dnl
+AC_REQUIRE([LT_LIB_DLLOAD])dnl
+AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
+AC_REQUIRE([LT_FUNC_DLSYM_USCORE])dnl
+AC_REQUIRE([LT_SYS_DLOPEN_DEPLIBS])dnl
+AC_REQUIRE([gl_FUNC_ARGZ])dnl
+
+m4_require([_LT_CHECK_OBJDIR])dnl
+m4_require([_LT_HEADER_DLFCN])dnl
+m4_require([_LT_CHECK_DLPREOPEN])dnl
+m4_require([_LT_DECL_SED])dnl
+
+dnl Don't require this, or it will be expanded earlier than the code
+dnl that sets the variables it relies on:
+_LT_ENABLE_INSTALL
+
+dnl _LTDL_MODE specific code must be called at least once:
+_LTDL_MODE_DISPATCH
+
+# In order that ltdl.c can compile, find out the first AC_CONFIG_HEADERS
+# the user used.  This is so that ltdl.h can pick up the parent projects
+# config.h file, The first file in AC_CONFIG_HEADERS must contain the
+# definitions required by ltdl.c.
+# FIXME: Remove use of undocumented AC_LIST_HEADERS (2.59 compatibility).
+AC_CONFIG_COMMANDS_PRE([dnl
+m4_pattern_allow([^LT_CONFIG_H$])dnl
+m4_ifset([AH_HEADER],
+    [LT_CONFIG_H=AH_HEADER],
+    [m4_ifset([AC_LIST_HEADERS],
+	    [LT_CONFIG_H=`echo "AC_LIST_HEADERS" | $SED 's,^[[      ]]*,,;s,[[ :]].*$,,'`],
+	[])])])
+AC_SUBST([LT_CONFIG_H])
+
+AC_CHECK_HEADERS([unistd.h dl.h sys/dl.h dld.h mach-o/dyld.h dirent.h],
+	[], [], [AC_INCLUDES_DEFAULT])
+
+AC_CHECK_FUNCS([closedir opendir readdir], [], [AC_LIBOBJ([lt__dirent])])
+AC_CHECK_FUNCS([strlcat strlcpy], [], [AC_LIBOBJ([lt__strl])])
+
+m4_pattern_allow([LT_LIBEXT])dnl
+AC_DEFINE_UNQUOTED([LT_LIBEXT],["$libext"],[The archive extension])
+
+name=
+eval "lt_libprefix=\"$libname_spec\""
+m4_pattern_allow([LT_LIBPREFIX])dnl
+AC_DEFINE_UNQUOTED([LT_LIBPREFIX],["$lt_libprefix"],[The archive prefix])
+
+name=ltdl
+eval "LTDLOPEN=\"$libname_spec\""
+AC_SUBST([LTDLOPEN])
+])# _LTDL_SETUP
+
+
+# _LT_ENABLE_INSTALL
+# ------------------
+m4_define([_LT_ENABLE_INSTALL],
+[AC_ARG_ENABLE([ltdl-install],
+    [AS_HELP_STRING([--enable-ltdl-install], [install libltdl])])
+
+case ,${enable_ltdl_install},${enable_ltdl_convenience} in
+  *yes*) ;;
+  *) enable_ltdl_convenience=yes ;;
+esac
+
+m4_ifdef([AM_CONDITIONAL],
+[AM_CONDITIONAL(INSTALL_LTDL, test x"${enable_ltdl_install-no}" != xno)
+ AM_CONDITIONAL(CONVENIENCE_LTDL, test x"${enable_ltdl_convenience-no}" != xno)])
+])# _LT_ENABLE_INSTALL
+
+
+# LT_SYS_DLOPEN_DEPLIBS
+# ---------------------
+AC_DEFUN([LT_SYS_DLOPEN_DEPLIBS],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_CACHE_CHECK([whether deplibs are loaded by dlopen],
+  [lt_cv_sys_dlopen_deplibs],
+  [# PORTME does your system automatically load deplibs for dlopen?
+  # or its logical equivalent (e.g. shl_load for HP-UX < 11)
+  # For now, we just catch OSes we know something about -- in the
+  # future, we'll try test this programmatically.
+  lt_cv_sys_dlopen_deplibs=unknown
+  case $host_os in
+  aix3*|aix4.1.*|aix4.2.*)
+    # Unknown whether this is true for these versions of AIX, but
+    # we want this `case' here to explicitly catch those versions.
+    lt_cv_sys_dlopen_deplibs=unknown
+    ;;
+  aix[[4-9]]*)
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  amigaos*)
+    case $host_cpu in
+    powerpc)
+      lt_cv_sys_dlopen_deplibs=no
+      ;;
+    esac
+    ;;
+  darwin*)
+    # Assuming the user has installed a libdl from somewhere, this is true
+    # If you are looking for one http://www.opendarwin.org/projects/dlcompat
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  freebsd* | dragonfly*)
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  gnu* | linux* | k*bsd*-gnu | kopensolaris*-gnu)
+    # GNU and its variants, using gnu ld.so (Glibc)
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  hpux10*|hpux11*)
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  interix*)
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  irix[[12345]]*|irix6.[[01]]*)
+    # Catch all versions of IRIX before 6.2, and indicate that we don't
+    # know how it worked for any of those versions.
+    lt_cv_sys_dlopen_deplibs=unknown
+    ;;
+  irix*)
+    # The case above catches anything before 6.2, and it's known that
+    # at 6.2 and later dlopen does load deplibs.
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  netbsd* | netbsdelf*-gnu)
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  openbsd*)
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  osf[[1234]]*)
+    # dlopen did load deplibs (at least at 4.x), but until the 5.x series,
+    # it did *not* use an RPATH in a shared library to find objects the
+    # library depends on, so we explicitly say `no'.
+    lt_cv_sys_dlopen_deplibs=no
+    ;;
+  osf5.0|osf5.0a|osf5.1)
+    # dlopen *does* load deplibs and with the right loader patch applied
+    # it even uses RPATH in a shared library to search for shared objects
+    # that the library depends on, but there's no easy way to know if that
+    # patch is installed.  Since this is the case, all we can really
+    # say is unknown -- it depends on the patch being installed.  If
+    # it is, this changes to `yes'.  Without it, it would be `no'.
+    lt_cv_sys_dlopen_deplibs=unknown
+    ;;
+  osf*)
+    # the two cases above should catch all versions of osf <= 5.1.  Read
+    # the comments above for what we know about them.
+    # At > 5.1, deplibs are loaded *and* any RPATH in a shared library
+    # is used to find them so we can finally say `yes'.
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  qnx*)
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  solaris*)
+    lt_cv_sys_dlopen_deplibs=yes
+    ;;
+  sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+    libltdl_cv_sys_dlopen_deplibs=yes
+    ;;
+  esac
+  ])
+if test "$lt_cv_sys_dlopen_deplibs" != yes; then
+ AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1],
+    [Define if the OS needs help to load dependent libraries for dlopen().])
+fi
+])# LT_SYS_DLOPEN_DEPLIBS
+
+# Old name:
+AU_ALIAS([AC_LTDL_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], [])
+
+
+# LT_SYS_MODULE_EXT
+# -----------------
+AC_DEFUN([LT_SYS_MODULE_EXT],
+[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
+AC_CACHE_CHECK([which extension is used for runtime loadable modules],
+  [libltdl_cv_shlibext],
+[
+module=yes
+eval libltdl_cv_shlibext=$shrext_cmds
+module=no
+eval libltdl_cv_shrext=$shrext_cmds
+  ])
+if test -n "$libltdl_cv_shlibext"; then
+  m4_pattern_allow([LT_MODULE_EXT])dnl
+  AC_DEFINE_UNQUOTED([LT_MODULE_EXT], ["$libltdl_cv_shlibext"],
+    [Define to the extension used for runtime loadable modules, say, ".so".])
+fi
+if test "$libltdl_cv_shrext" != "$libltdl_cv_shlibext"; then
+  m4_pattern_allow([LT_SHARED_EXT])dnl
+  AC_DEFINE_UNQUOTED([LT_SHARED_EXT], ["$libltdl_cv_shrext"],
+    [Define to the shared library suffix, say, ".dylib".])
+fi
+])# LT_SYS_MODULE_EXT
+
+# Old name:
+AU_ALIAS([AC_LTDL_SHLIBEXT], [LT_SYS_MODULE_EXT])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LTDL_SHLIBEXT], [])
+
+
+# LT_SYS_MODULE_PATH
+# ------------------
+AC_DEFUN([LT_SYS_MODULE_PATH],
+[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
+AC_CACHE_CHECK([which variable specifies run-time module search path],
+  [lt_cv_module_path_var], [lt_cv_module_path_var="$shlibpath_var"])
+if test -n "$lt_cv_module_path_var"; then
+  m4_pattern_allow([LT_MODULE_PATH_VAR])dnl
+  AC_DEFINE_UNQUOTED([LT_MODULE_PATH_VAR], ["$lt_cv_module_path_var"],
+    [Define to the name of the environment variable that determines the run-time module search path.])
+fi
+])# LT_SYS_MODULE_PATH
+
+# Old name:
+AU_ALIAS([AC_LTDL_SHLIBPATH], [LT_SYS_MODULE_PATH])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LTDL_SHLIBPATH], [])
+
+
+# LT_SYS_DLSEARCH_PATH
+# --------------------
+AC_DEFUN([LT_SYS_DLSEARCH_PATH],
+[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
+AC_CACHE_CHECK([for the default library search path],
+  [lt_cv_sys_dlsearch_path],
+  [lt_cv_sys_dlsearch_path="$sys_lib_dlsearch_path_spec"])
+if test -n "$lt_cv_sys_dlsearch_path"; then
+  sys_dlsearch_path=
+  for dir in $lt_cv_sys_dlsearch_path; do
+    if test -z "$sys_dlsearch_path"; then
+      sys_dlsearch_path="$dir"
+    else
+      sys_dlsearch_path="$sys_dlsearch_path$PATH_SEPARATOR$dir"
+    fi
+  done
+  m4_pattern_allow([LT_DLSEARCH_PATH])dnl
+  AC_DEFINE_UNQUOTED([LT_DLSEARCH_PATH], ["$sys_dlsearch_path"],
+    [Define to the system default library search path.])
+fi
+])# LT_SYS_DLSEARCH_PATH
+
+# Old name:
+AU_ALIAS([AC_LTDL_SYSSEARCHPATH], [LT_SYS_DLSEARCH_PATH])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LTDL_SYSSEARCHPATH], [])
+
+
+# _LT_CHECK_DLPREOPEN
+# -------------------
+m4_defun([_LT_CHECK_DLPREOPEN],
+[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen],
+  [libltdl_cv_preloaded_symbols],
+  [if test -n "$lt_cv_sys_global_symbol_pipe"; then
+    libltdl_cv_preloaded_symbols=yes
+  else
+    libltdl_cv_preloaded_symbols=no
+  fi
+  ])
+if test x"$libltdl_cv_preloaded_symbols" = xyes; then
+  AC_DEFINE([HAVE_PRELOADED_SYMBOLS], [1],
+    [Define if libtool can extract symbol lists from object files.])
+fi
+])# _LT_CHECK_DLPREOPEN
+
+
+# LT_LIB_DLLOAD
+# -------------
+AC_DEFUN([LT_LIB_DLLOAD],
+[m4_pattern_allow([^LT_DLLOADERS$])
+LT_DLLOADERS=
+AC_SUBST([LT_DLLOADERS])
+
+AC_LANG_PUSH([C])
+
+LIBADD_DLOPEN=
+AC_SEARCH_LIBS([dlopen], [dl],
+	[AC_DEFINE([HAVE_LIBDL], [1],
+		   [Define if you have the libdl library or equivalent.])
+	if test "$ac_cv_search_dlopen" != "none required" ; then
+	  LIBADD_DLOPEN="-ldl"
+	fi
+	libltdl_cv_lib_dl_dlopen="yes"
+	LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
+    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H
+#  include <dlfcn.h>
+#endif
+    ]], [[dlopen(0, 0);]])],
+	    [AC_DEFINE([HAVE_LIBDL], [1],
+		       [Define if you have the libdl library or equivalent.])
+	    libltdl_cv_func_dlopen="yes"
+	    LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
+	[AC_CHECK_LIB([svld], [dlopen],
+		[AC_DEFINE([HAVE_LIBDL], [1],
+			 [Define if you have the libdl library or equivalent.])
+	        LIBADD_DLOPEN="-lsvld" libltdl_cv_func_dlopen="yes"
+		LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"])])])
+if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes
+then
+  lt_save_LIBS="$LIBS"
+  LIBS="$LIBS $LIBADD_DLOPEN"
+  AC_CHECK_FUNCS([dlerror])
+  LIBS="$lt_save_LIBS"
+fi
+AC_SUBST([LIBADD_DLOPEN])
+
+LIBADD_SHL_LOAD=
+AC_CHECK_FUNC([shl_load],
+	[AC_DEFINE([HAVE_SHL_LOAD], [1],
+		   [Define if you have the shl_load function.])
+	LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"],
+    [AC_CHECK_LIB([dld], [shl_load],
+	    [AC_DEFINE([HAVE_SHL_LOAD], [1],
+		       [Define if you have the shl_load function.])
+	    LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"
+	    LIBADD_SHL_LOAD="-ldld"])])
+AC_SUBST([LIBADD_SHL_LOAD])
+
+case $host_os in
+darwin[[1567]].*)
+# We only want this for pre-Mac OS X 10.4.
+  AC_CHECK_FUNC([_dyld_func_lookup],
+	[AC_DEFINE([HAVE_DYLD], [1],
+		   [Define if you have the _dyld_func_lookup function.])
+	LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dyld.la"])
+  ;;
+beos*)
+  LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}load_add_on.la"
+  ;;
+cygwin* | mingw* | os2* | pw32*)
+  AC_CHECK_DECLS([cygwin_conv_path], [], [], [[#include <sys/cygwin.h>]])
+  LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}loadlibrary.la"
+  ;;
+esac
+
+AC_CHECK_LIB([dld], [dld_link],
+	[AC_DEFINE([HAVE_DLD], [1],
+		   [Define if you have the GNU dld library.])
+		LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dld_link.la"])
+AC_SUBST([LIBADD_DLD_LINK])
+
+m4_pattern_allow([^LT_DLPREOPEN$])
+LT_DLPREOPEN=
+if test -n "$LT_DLLOADERS"
+then
+  for lt_loader in $LT_DLLOADERS; do
+    LT_DLPREOPEN="$LT_DLPREOPEN-dlpreopen $lt_loader "
+  done
+  AC_DEFINE([HAVE_LIBDLLOADER], [1],
+            [Define if libdlloader will be built on this platform])
+fi
+AC_SUBST([LT_DLPREOPEN])
+
+dnl This isn't used anymore, but set it for backwards compatibility
+LIBADD_DL="$LIBADD_DLOPEN $LIBADD_SHL_LOAD"
+AC_SUBST([LIBADD_DL])
+
+AC_LANG_POP
+])# LT_LIB_DLLOAD
+
+# Old name:
+AU_ALIAS([AC_LTDL_DLLIB], [LT_LIB_DLLOAD])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LTDL_DLLIB], [])
+
+
+# LT_SYS_SYMBOL_USCORE
+# --------------------
+# does the compiler prefix global symbols with an underscore?
+AC_DEFUN([LT_SYS_SYMBOL_USCORE],
+[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+AC_CACHE_CHECK([for _ prefix in compiled symbols],
+  [lt_cv_sys_symbol_underscore],
+  [lt_cv_sys_symbol_underscore=no
+  cat > conftest.$ac_ext <<_LT_EOF
+void nm_test_func(){}
+int main(){nm_test_func;return 0;}
+_LT_EOF
+  if AC_TRY_EVAL(ac_compile); then
+    # Now try to grab the symbols.
+    ac_nlist=conftest.nm
+    if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then
+      # See whether the symbols have a leading underscore.
+      if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then
+        lt_cv_sys_symbol_underscore=yes
+      else
+        if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then
+	  :
+        else
+	  echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD
+        fi
+      fi
+    else
+      echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
+    fi
+  else
+    echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
+    cat conftest.c >&AS_MESSAGE_LOG_FD
+  fi
+  rm -rf conftest*
+  ])
+  sys_symbol_underscore=$lt_cv_sys_symbol_underscore
+  AC_SUBST([sys_symbol_underscore])
+])# LT_SYS_SYMBOL_USCORE
+
+# Old name:
+AU_ALIAS([AC_LTDL_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LTDL_SYMBOL_USCORE], [])
+
+
+# LT_FUNC_DLSYM_USCORE
+# --------------------
+AC_DEFUN([LT_FUNC_DLSYM_USCORE],
+[AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
+if test x"$lt_cv_sys_symbol_underscore" = xyes; then
+  if test x"$libltdl_cv_func_dlopen" = xyes ||
+     test x"$libltdl_cv_lib_dl_dlopen" = xyes ; then
+	AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
+	  [libltdl_cv_need_uscore],
+	  [libltdl_cv_need_uscore=unknown
+          save_LIBS="$LIBS"
+          LIBS="$LIBS $LIBADD_DLOPEN"
+	  _LT_TRY_DLOPEN_SELF(
+	    [libltdl_cv_need_uscore=no], [libltdl_cv_need_uscore=yes],
+	    [],				 [libltdl_cv_need_uscore=cross])
+	  LIBS="$save_LIBS"
+	])
+  fi
+fi
+
+if test x"$libltdl_cv_need_uscore" = xyes; then
+  AC_DEFINE([NEED_USCORE], [1],
+    [Define if dlsym() requires a leading underscore in symbol names.])
+fi
+])# LT_FUNC_DLSYM_USCORE
+
+# Old name:
+AU_ALIAS([AC_LTDL_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LTDL_DLSYM_USCORE], [])
+
 # Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008, 2011 Free Software
 # Foundation, Inc.
 #
@@ -1069,6 +1887,7 @@
 m4_include([m4/asmcfi.m4])
 m4_include([m4/ax_cc_maxopt.m4])
 m4_include([m4/ax_cflags_warn_all.m4])
+m4_include([m4/ax_check_compile_flag.m4])
 m4_include([m4/ax_compiler_vendor.m4])
 m4_include([m4/ax_configure_args.m4])
 m4_include([m4/ax_enable_builddir.m4])
diff --git a/Modules/_ctypes/libffi/configure b/Modules/_ctypes/libffi/configure
index ff2a953..05a7902 100755
--- a/Modules/_ctypes/libffi/configure
+++ b/Modules/_ctypes/libffi/configure
@@ -624,6 +624,7 @@
 FFI_EXEC_TRAMPOLINE_TABLE
 FFI_EXEC_TRAMPOLINE_TABLE_FALSE
 FFI_EXEC_TRAMPOLINE_TABLE_TRUE
+sys_symbol_underscore
 HAVE_LONG_DOUBLE
 ALLOCA
 PA64_HPUX_FALSE
@@ -12116,9 +12117,41 @@
 	 else
            xlc_opt="-qtune=auto"
 	 fi
-         AX_CHECK_COMPILE_FLAG($xlc_opt,
-		CFLAGS="-O3 -qansialias -w $xlc_opt",
-               CFLAGS="-O3 -qansialias -w"
+         as_CACHEVAR=`$as_echo "ax_cv_check_cflags__$xlc_opt" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts $xlc_opt" >&5
+$as_echo_n "checking whether C compiler accepts $xlc_opt... " >&6; }
+if eval \${$as_CACHEVAR+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  $xlc_opt"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$as_CACHEVAR=yes"
+else
+  eval "$as_CACHEVAR=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+eval ac_res=\$$as_CACHEVAR
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if test x"`eval 'as_val=${'$as_CACHEVAR'};$as_echo "$as_val"'`" = xyes; then :
+  CFLAGS="-O3 -qansialias -w $xlc_opt"
+else
+  CFLAGS="-O3 -qansialias -w"
                 echo "******************************************************"
                 echo "*  You seem to have the IBM  C compiler.  It is      *"
                 echo "*  recommended for best performance that you use:    *"
@@ -12128,7 +12161,9 @@
                 echo "*  where xxx is pwr2, pwr3, 604, or whatever kind of *"
                 echo "*  CPU you have.  (Set the CFLAGS environment var.   *"
                 echo "*  and re-run configure.)  For more info, man cc.    *"
-                echo "******************************************************")
+                echo "******************************************************"
+fi
+
          ;;
 
     intel) CFLAGS="-O3 -ansi_alias"
@@ -12259,7 +12294,43 @@
           esac
           if test "x$icc_flags" != x; then
             for flag in $icc_flags; do
-              AX_CHECK_COMPILE_FLAG($flag, icc_archflag=$flag; break)
+              as_CACHEVAR=`$as_echo "ax_cv_check_cflags__$flag" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts $flag" >&5
+$as_echo_n "checking whether C compiler accepts $flag... " >&6; }
+if eval \${$as_CACHEVAR+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  $flag"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$as_CACHEVAR=yes"
+else
+  eval "$as_CACHEVAR=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+eval ac_res=\$$as_CACHEVAR
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if test x"`eval 'as_val=${'$as_CACHEVAR'};$as_echo "$as_val"'`" = xyes; then :
+  icc_archflag=$flag; break
+else
+  :
+fi
+
             done
           fi
           { $as_echo "$as_me:${as_lineno-$LINENO}: checking for icc architecture flag" >&5
@@ -12277,14 +12348,115 @@
      CFLAGS="-O3 -fomit-frame-pointer"
 
      # -malign-double for x86 systems
-     AX_CHECK_COMPILE_FLAG(-malign-double, CFLAGS="$CFLAGS -malign-double")
+     { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -malign-double" >&5
+$as_echo_n "checking whether C compiler accepts -malign-double... " >&6; }
+if ${ax_cv_check_cflags___malign_double+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -malign-double"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___malign_double=yes
+else
+  ax_cv_check_cflags___malign_double=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___malign_double" >&5
+$as_echo "$ax_cv_check_cflags___malign_double" >&6; }
+if test x"$ax_cv_check_cflags___malign_double" = xyes; then :
+  CFLAGS="$CFLAGS -malign-double"
+else
+  :
+fi
+
 
      #  -fstrict-aliasing for gcc-2.95+
-     AX_CHECK_COMPILE_FLAG(-fstrict-aliasing,
-	CFLAGS="$CFLAGS -fstrict-aliasing")
+     { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fstrict-aliasing" >&5
+$as_echo_n "checking whether C compiler accepts -fstrict-aliasing... " >&6; }
+if ${ax_cv_check_cflags___fstrict_aliasing+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -fstrict-aliasing"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___fstrict_aliasing=yes
+else
+  ax_cv_check_cflags___fstrict_aliasing=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___fstrict_aliasing" >&5
+$as_echo "$ax_cv_check_cflags___fstrict_aliasing" >&6; }
+if test x"$ax_cv_check_cflags___fstrict_aliasing" = xyes; then :
+  CFLAGS="$CFLAGS -fstrict-aliasing"
+else
+  :
+fi
+
 
      # note that we enable "unsafe" fp optimization with other compilers, too
-     AX_CHECK_COMPILE_FLAG(-ffast-math, CFLAGS="$CFLAGS -ffast-math")
+     { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -ffast-math" >&5
+$as_echo_n "checking whether C compiler accepts -ffast-math... " >&6; }
+if ${ax_cv_check_cflags___ffast_math+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -ffast-math"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___ffast_math=yes
+else
+  ax_cv_check_cflags___ffast_math=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___ffast_math" >&5
+$as_echo "$ax_cv_check_cflags___ffast_math" >&6; }
+if test x"$ax_cv_check_cflags___ffast_math" = xyes; then :
+  CFLAGS="$CFLAGS -ffast-math"
+else
+  :
+fi
+
 
 
 
@@ -12630,7 +12802,43 @@
     flags="-march=$arch -mcpu=$arch -m$arch"
   fi
   for flag in $flags; do
-    AX_CHECK_COMPILE_FLAG($flag, ax_cv_gcc_archflag=$flag; break)
+    as_CACHEVAR=`$as_echo "ax_cv_check_cflags__$flag" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts $flag" >&5
+$as_echo_n "checking whether C compiler accepts $flag... " >&6; }
+if eval \${$as_CACHEVAR+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  $flag"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$as_CACHEVAR=yes"
+else
+  eval "$as_CACHEVAR=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+eval ac_res=\$$as_CACHEVAR
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if test x"`eval 'as_val=${'$as_CACHEVAR'};$as_echo "$as_val"'`" = xyes; then :
+  ax_cv_gcc_archflag=$flag; break
+else
+  :
+fi
+
   done
   test "x$ax_cv_gcc_archflag" = xunknown || break
 done
@@ -12664,7 +12872,41 @@
         CFLAGS="-O3"
   fi
 
-  AX_CHECK_COMPILE_FLAG($CFLAGS, ,
+  as_CACHEVAR=`$as_echo "ax_cv_check_cflags__$CFLAGS" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts $CFLAGS" >&5
+$as_echo_n "checking whether C compiler accepts $CFLAGS... " >&6; }
+if eval \${$as_CACHEVAR+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  $CFLAGS"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$as_CACHEVAR=yes"
+else
+  eval "$as_CACHEVAR=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+eval ac_res=\$$as_CACHEVAR
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if test x"`eval 'as_val=${'$as_CACHEVAR'};$as_echo "$as_val"'`" = xyes; then :
+  :
+else
+
 	echo ""
         echo "********************************************************"
         echo "* WARNING: The guessed CFLAGS don't seem to work with  *"
@@ -12673,7 +12915,9 @@
         echo "********************************************************"
         echo ""
         CFLAGS=""
-  )
+
+fi
+
 
 fi
 
@@ -14144,7 +14388,53 @@
 fi
 
 if test x$TARGET = xX86_WIN64; then
-    LT_SYS_SYMBOL_USCORE
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _ prefix in compiled symbols" >&5
+$as_echo_n "checking for _ prefix in compiled symbols... " >&6; }
+if ${lt_cv_sys_symbol_underscore+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_sys_symbol_underscore=no
+  cat > conftest.$ac_ext <<_LT_EOF
+void nm_test_func(){}
+int main(){nm_test_func;return 0;}
+_LT_EOF
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    # Now try to grab the symbols.
+    ac_nlist=conftest.nm
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist\""; } >&5
+  (eval $NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s "$ac_nlist"; then
+      # See whether the symbols have a leading underscore.
+      if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then
+        lt_cv_sys_symbol_underscore=yes
+      else
+        if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then
+	  :
+        else
+	  echo "configure: cannot find nm_test_func in $ac_nlist" >&5
+        fi
+      fi
+    else
+      echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&5
+    fi
+  else
+    echo "configure: failed program was:" >&5
+    cat conftest.c >&5
+  fi
+  rm -rf conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sys_symbol_underscore" >&5
+$as_echo "$lt_cv_sys_symbol_underscore" >&6; }
+  sys_symbol_underscore=$lt_cv_sys_symbol_underscore
+
+
     if test "x$sys_symbol_underscore" = xyes; then
 
 $as_echo "#define SYMBOL_UNDERSCORE 1" >>confdefs.h
diff --git a/Modules/_ctypes/libffi/m4/ax_check_compile_flag.m4 b/Modules/_ctypes/libffi/m4/ax_check_compile_flag.m4
new file mode 100644
index 0000000..c3a8d69
--- /dev/null
+++ b/Modules/_ctypes/libffi/m4/ax_check_compile_flag.m4
@@ -0,0 +1,72 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
+#
+# DESCRIPTION
+#
+#   Check whether the given FLAG works with the current language's compiler
+#   or gives an error.  (Warnings, however, are ignored)
+#
+#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
+#   success/failure.
+#
+#   If EXTRA-FLAGS is defined, it is added to the current language's default
+#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
+#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
+#   force the compiler to issue an error when a bad flag is given.
+#
+#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
+#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
+#   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
+#
+#   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 2
+
+AC_DEFUN([AX_CHECK_COMPILE_FLAG],
+[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
+AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
+AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
+  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
+  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+    [AS_VAR_SET(CACHEVAR,[yes])],
+    [AS_VAR_SET(CACHEVAR,[no])])
+  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
+AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
+  [m4_default([$2], :)],
+  [m4_default([$3], :)])
+AS_VAR_POPDEF([CACHEVAR])dnl
+])dnl AX_CHECK_COMPILE_FLAGS
diff --git a/setup.py b/setup.py
index fa7bf2e..d654aab 100644
--- a/setup.py
+++ b/setup.py
@@ -438,7 +438,9 @@
         if not cross_compiling:
             add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
             add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')
-        self.add_gcc_paths()
+        # only change this for cross builds for 3.3, issues on Mageia
+        if cross_compiling:
+            self.add_gcc_paths()
         self.add_multiarch_paths()
 
         # Add paths specified in the environment variables LDFLAGS and
@@ -489,18 +491,12 @@
         # lib_dirs and inc_dirs are used to search for files;
         # if a file is found in one of those directories, it can
         # be assumed that no additional -I,-L directives are needed.
-        inc_dirs = self.compiler.include_dirs[:]
-        lib_dirs = self.compiler.library_dirs[:]
         if not cross_compiling:
-            for d in (
-                '/usr/include',
-                ):
-                add_dir_to_list(inc_dirs, d)
-            for d in (
+            lib_dirs = self.compiler.library_dirs + [
                 '/lib64', '/usr/lib64',
                 '/lib', '/usr/lib',
-                ):
-                add_dir_to_list(lib_dirs, d)
+                ]
+            inc_dirs = self.compiler.include_dirs + ['/usr/include']
         exts = []
         missing = []