[yoda-svn] r579 - in trunk: . m4

blackhole at projects.hepforge.org blackhole at projects.hepforge.org
Fri Mar 22 10:39:57 GMT 2013


Author: buckley
Date: Fri Mar 22 10:39:56 2013
New Revision: 579

Log:
Using the nice Boost-finding macros from https://github.com/tsuna/boost.m4 and tidying up configure.ac. Removing the use of svn:external to pull in Boost macros and using a minimal local set instead.

Added:
   trunk/m4/
   trunk/m4/boost.m4
   trunk/m4/cxx.m4
   trunk/m4/cython.m4
   trunk/m4/osx.m4
   trunk/m4/pkgchecks.m4
   trunk/m4/python.m4
Modified:
   trunk/   (props changed)
   trunk/ChangeLog
   trunk/configure.ac

Modified: trunk/ChangeLog
==============================================================================
--- trunk/ChangeLog	Fri Mar 22 10:33:49 2013	(r578)
+++ trunk/ChangeLog	Fri Mar 22 10:39:56 2013	(r579)
@@ -1,3 +1,11 @@
+2013-03-22  Andy Buckley  <andy.buckley at cern.ch>
+
+	* Removing the use of svn:external to pull in Boost macros and
+	using a minimal local set instead.
+
+	* Using the nice Boost-finding macros from
+	https://github.com/tsuna/boost.m4 and tidying up configure.ac
+
 2013-03-15  Andy Buckley  <andy.buckley at cern.ch>
 
 	* Re-organising the C++ side of the auto-format I/O functions,

Modified: trunk/configure.ac
==============================================================================
--- trunk/configure.ac	Fri Mar 22 10:33:49 2013	(r578)
+++ trunk/configure.ac	Fri Mar 22 10:39:56 2013	(r579)
@@ -37,10 +37,25 @@
 LIB_SUFFIX=\\\"$shrext_cmds\\\"
 AC_SUBST([LIB_SUFFIX])
 
+## Set default build flags
+AM_CPPFLAGS="-I\$(top_srcdir)/include -I\$(top_builddir)/include"
+AM_CPPFLAGS="$AM_CPPFLAGS -I\$(BOOSTINCPATH) \$(BOOST_CPPFLAGS)"
+AC_CEDAR_CHECKCXXFLAG([-pedantic], [AM_CXXFLAGS="$AM_CXXFLAGS -pedantic "])
+AC_CEDAR_CHECKCXXFLAG([-Wall], [AM_CXXFLAGS="$AM_CXXFLAGS -Wall -Wno-format"])
+AC_CEDAR_CHECKCXXFLAG([-std=c++98], [AM_CXXFLAGS="$AM_CXXFLAGS -std=c++98 "])
+
+## Debug flag (default=none)
+AC_ARG_ENABLE([debug], [AC_HELP_STRING(--enable-debug, [build with debugging symbols  @<:@default=no@:>@])], [], [enable_debug=no])
+if test x$enable_debug == xyes; then
+  [AM_CXXFLAGS="$AM_CXXFLAGS -g"]
+fi
+
+
 ## Build Doxygen if possible
 AC_PATH_PROG(DOXYGEN, doxygen)
 AM_CONDITIONAL(WITH_DOXYGEN, test "$DOXYGEN")
 
+
 ## Python extension
 AC_ARG_ENABLE(pyext, [AC_HELP_STRING(--disable-pyext,
   [don't build Python module (default=build)])],
@@ -61,7 +76,7 @@
     AC_MSG_RESULT([$python_incpath])
     python_header="$python_incpath/Python.h"
     if test -z "$python_incpath"; then
-      AC_MSG_ERROR([Can't build Python extension since include directory cannot be determined from distutils])
+     AC_MSG_ERROR([Can't build Python extension since include directory cannot be determined from distutils])
       enable_pyext=no
     elif test ! -e "$python_header"; then
       AC_MSG_ERROR([Can't build Python extension since header file $python_header cannot be found])
@@ -72,7 +87,6 @@
     enable_pyext=no
   fi
 fi
-
 ## Cython checks (Probably need some help...)
 # TODO: "Tarball users" should ideally not need to have Cython installed
 if test x$enable_pyext == xyes; then
@@ -84,13 +98,13 @@
     cython_compiler=$CXX
   fi
 fi
-
-## Finish
+## Finish Python extension testing
 if test x$enable_pyext == xyes; then
   AC_MSG_NOTICE([All Python build checks successful: 'yoda' Python extension will be built])
 fi
 AM_CONDITIONAL(ENABLE_PYEXT, [test x$enable_pyext == xyes])
 
+
 ## Optional ROOT analysis framework
 #AC_ARG_ENABLE([ROOT], [AC_HELP_STRING(--enable-root, [build with ROOT output @<:@default=yes@:>@])], [], [enable_root=yes])
 #if test "x$enable_root" != "xno"; then
@@ -100,44 +114,21 @@
 #  AM_CONDITIONAL(WITH_ROOT, [test x$with_root == xyes])
 #fi
 
-## Boost C++ header library
-AC_CEDAR_HEADERS([Boost], , , [AC_MSG_ERROR([Boost is required])])
-oldCPPFLAGS=$CPPFLAGS
-CPPFLAGS="$CPPFLAGS -I$BOOSTINCPATH"
-BOOSTERRMSG="You need at least version 1.34.0 of Boost for this installation."
-BOOSTERRMSG="$BOOSTERRMSG If you want to use Boost from a non-standard location,"
-BOOSTERRMSG="$BOOSTERRMSG please specify '--with-boost-incpath=/path/to/boost_1_35/include'"
-BOOSTERRMSG="$BOOSTERRMSG as option to the configure script or run the rivet-bootstrap script "
-BOOSTERRMSG="$BOOSTERRMSG with the --install-boost option, or --boost=/path/to/boost"
-AC_CHECK_HEADER([boost/foreach.hpp], [], [AC_MSG_ERROR([Boost foreach not found. $BOOSTERRMSG])])
-AC_CHECK_HEADER([boost/smart_ptr.hpp], [], [AC_MSG_ERROR([Boost smart_ptr not found. $BOOSTERRMSG])])
-AC_CHECK_HEADER([boost/lexical_cast.hpp], [], [AC_MSG_ERROR([Boost lexical_cast not found. $BOOSTERRMSG])])
-AC_CHECK_HEADER([boost/assign.hpp], [], [AC_MSG_ERROR([Boost assign not found. $BOOSTERRMSG])])
-AC_CHECK_HEADER([boost/random.hpp], [], [AC_MSG_ERROR([Boost random numbers not found. $BOOSTERRMSG])])
-CPPFLAGS=$oldCPPFLAGS
-
-## Set default build flags
-AM_CPPFLAGS="-I\$(top_srcdir)/include -I\$(top_builddir)/include"
-AM_CPPFLAGS="$AM_CPPFLAGS -I\$(BOOSTINCPATH) \$(BOOST_CPPFLAGS)"
-
-AC_CEDAR_CHECKCXXFLAG([-pedantic], [AM_CXXFLAGS="$AM_CXXFLAGS -pedantic "])
-dnl ansi is implied by std=c++, listing it confuses clang
-dnl AC_CEDAR_CHECKCXXFLAG([-ansi], [AM_CXXFLAGS="$AM_CXXFLAGS -ansi "])
-AC_CEDAR_CHECKCXXFLAG([-Wall], [AM_CXXFLAGS="$AM_CXXFLAGS -Wall -Wno-format"])
-dnl AC_CEDAR_CHECKCXXFLAG([-Wno-long-long], [AM_CXXFLAGS="$AM_CXXFLAGS -Wno-long-long "])
-dnl Need to be C++98!
-AC_CEDAR_CHECKCXXFLAG([-std=c++98], [AM_CXXFLAGS="$AM_CXXFLAGS -std=c++98 "])
 
+## Boost C++ utility library
+BOOST_REQUIRE([1.34.0])
+BOOST_FOREACH
+BOOST_SMART_PTR
+BOOST_FIND_HEADER([boost/lexical_cast.hpp])
+BOOST_FIND_HEADER([boost/assign.hpp])
 
-## Debug flag (default=none)
-AC_ARG_ENABLE([debug], [AC_HELP_STRING(--enable-debug, [build with debugging symbols  @<:@default=no@:>@])], [], [enable_debug=no])
-if test x$enable_debug == xyes; then
-  [AM_CXXFLAGS="$AM_CXXFLAGS -g"]
-fi
 
+## Substitute the default build flags after lib testing
 AC_SUBST(AM_CPPFLAGS)
 AC_SUBST(AM_CXXFLAGS)
 
+
+## BUild file output
 AC_EMPTY_SUBST
 AC_CONFIG_FILES([Makefile Doxyfile])
 AC_CONFIG_FILES([include/Makefile include/YODA/Makefile])

Added: trunk/m4/boost.m4
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ trunk/m4/boost.m4	Fri Mar 22 10:39:56 2013	(r579)
@@ -0,0 +1,1239 @@
+# boost.m4: Locate Boost headers and libraries for autoconf-based projects.
+# Copyright (C) 2007, 2008, 2009, 2010, 2011  Benoit Sigoure <tsuna at lrde.epita.fr>
+#
+# 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.
+#
+# Additional permission under section 7 of the GNU General Public
+# License, version 3 ("GPLv3"):
+#
+# If you convey this file as part of a work that contains a
+# configuration script generated by Autoconf, you may do so under
+# terms of your choice.
+#
+# 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/>.
+
+m4_define([_BOOST_SERIAL], [m4_translit([
+# serial 17
+], [#
+], [])])
+
+# Original sources can be found at http://github.com/tsuna/boost.m4
+# You can fetch the latest version of the script by doing:
+#   wget http://github.com/tsuna/boost.m4/raw/master/build-aux/boost.m4
+
+# ------ #
+# README #
+# ------ #
+
+# This file provides several macros to use the various Boost libraries.
+# The first macro is BOOST_REQUIRE.  It will simply check if it's possible to
+# find the Boost headers of a given (optional) minimum version and it will
+# define BOOST_CPPFLAGS accordingly.  It will add an option --with-boost to
+# your configure so that users can specify non standard locations.
+# If the user's environment contains BOOST_ROOT and --with-boost was not
+# specified, --with-boost=$BOOST_ROOT is implicitly used.
+# For more README and documentation, go to http://github.com/tsuna/boost.m4
+# Note: THESE MACROS ASSUME THAT YOU USE LIBTOOL.  If you don't, don't worry,
+# simply read the README, it will show you what to do step by step.
+
+m4_pattern_forbid([^_?(BOOST|Boost)_])
+
+
+# _BOOST_SED_CPP(SED-PROGRAM, PROGRAM,
+#                [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+# --------------------------------------------------------
+# Same as AC_EGREP_CPP, but leave the result in conftest.i.
+#
+# SED-PROGRAM is *not* overquoted, as in AC_EGREP_CPP.  It is expanded
+# in double-quotes, so escape your double quotes.
+#
+# It could be useful to turn this into a macro which extracts the
+# value of any macro.
+m4_define([_BOOST_SED_CPP],
+[AC_LANG_PREPROC_REQUIRE()dnl
+AC_REQUIRE([AC_PROG_SED])dnl
+AC_LANG_CONFTEST([AC_LANG_SOURCE([[$2]])])
+AS_IF([dnl eval is necessary to expand ac_cpp.
+dnl Ultrix and Pyramid sh refuse to redirect output of eval, so use subshell.
+dnl Beware of Windows end-of-lines, for instance if we are running
+dnl some Windows programs under Wine.  In that case, boost/version.hpp
+dnl is certainly using "\r\n", but the regular Unix shell will only
+dnl strip `\n' with backquotes, not the `\r'.  This results in
+dnl boost_cv_lib_version='1_37\r' for instance, which breaks
+dnl everything else.
+dnl Cannot use 'dnl' after [$4] because a trailing dnl may break AC_CACHE_CHECK
+(eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
+  tr -d '\r' |
+  $SED -n -e "$1" >conftest.i 2>&1],
+  [$3],
+  [$4])
+rm -rf conftest*
+])# AC_EGREP_CPP
+
+
+
+# BOOST_REQUIRE([VERSION], [ACTION-IF-NOT-FOUND])
+# -----------------------------------------------
+# Look for Boost.  If version is given, it must either be a literal of the form
+# "X.Y.Z" where X, Y and Z are integers (the ".Z" part being optional) or a
+# variable "$var".
+# Defines the value BOOST_CPPFLAGS.  This macro only checks for headers with
+# the required version, it does not check for any of the Boost libraries.
+# On # success, defines HAVE_BOOST.  On failure, calls the optional
+# ACTION-IF-NOT-FOUND action if one was supplied.
+# Otherwise aborts with an error message.
+AC_DEFUN([BOOST_REQUIRE],
+[AC_REQUIRE([AC_PROG_CXX])dnl
+AC_REQUIRE([AC_PROG_GREP])dnl
+echo "$as_me: this is boost.m4[]_BOOST_SERIAL" >&AS_MESSAGE_LOG_FD
+boost_save_IFS=$IFS
+boost_version_req=$1
+IFS=.
+set x $boost_version_req 0 0 0
+IFS=$boost_save_IFS
+shift
+boost_version_req=`expr "$[1]" '*' 100000 + "$[2]" '*' 100 + "$[3]"`
+boost_version_req_string=$[1].$[2].$[3]
+AC_ARG_WITH([boost],
+   [AS_HELP_STRING([--with-boost=DIR],
+                   [prefix of Boost $1 @<:@guess@:>@])])dnl
+AC_ARG_VAR([BOOST_ROOT],[Location of Boost installation])dnl
+# If BOOST_ROOT is set and the user has not provided a value to
+# --with-boost, then treat BOOST_ROOT as if it the user supplied it.
+if test x"$BOOST_ROOT" != x; then
+  if test x"$with_boost" = x; then
+    AC_MSG_NOTICE([Detected BOOST_ROOT; continuing with --with-boost=$BOOST_ROOT])
+    with_boost=$BOOST_ROOT
+  else
+    AC_MSG_NOTICE([Detected BOOST_ROOT=$BOOST_ROOT, but overridden by --with-boost=$with_boost])
+  fi
+fi
+AC_SUBST([DISTCHECK_CONFIGURE_FLAGS],
+         ["$DISTCHECK_CONFIGURE_FLAGS '--with-boost=$with_boost'"])dnl
+boost_save_CPPFLAGS=$CPPFLAGS
+  AC_CACHE_CHECK([for Boost headers version >= $boost_version_req_string],
+    [boost_cv_inc_path],
+    [boost_cv_inc_path=no
+AC_LANG_PUSH([C++])dnl
+m4_pattern_allow([^BOOST_VERSION$])dnl
+    AC_LANG_CONFTEST([AC_LANG_PROGRAM([[#include <boost/version.hpp>
+#if !defined BOOST_VERSION
+# error BOOST_VERSION is not defined
+#elif BOOST_VERSION < $boost_version_req
+# error Boost headers version < $boost_version_req
+#endif
+]])])
+    # If the user provided a value to --with-boost, use it and only it.
+    case $with_boost in #(
+      ''|yes) set x '' /opt/local/include /usr/local/include /opt/include \
+                 /usr/include C:/Boost/include;; #(
+      *)      set x "$with_boost/include" "$with_boost";;
+    esac
+    shift
+    for boost_dir
+    do
+    # Without --layout=system, Boost (or at least some versions) installs
+    # itself in <prefix>/include/boost-<version>.  This inner loop helps to
+    # find headers in such directories.
+    #
+    # Any ${boost_dir}/boost-x_xx directories are searched in reverse version
+    # order followed by ${boost_dir}.  The final '.' is a sentinel for
+    # searching $boost_dir" itself.  Entries are whitespace separated.
+    #
+    # I didn't indent this loop on purpose (to avoid over-indented code)
+    boost_layout_system_search_list=`cd "$boost_dir" 2>/dev/null \
+        && ls -1 | "${GREP}" '^boost-' | sort -rn -t- -k2 \
+        && echo .`
+    for boost_inc in $boost_layout_system_search_list
+    do
+      if test x"$boost_inc" != x.; then
+        boost_inc="$boost_dir/$boost_inc"
+      else
+        boost_inc="$boost_dir" # Uses sentinel in boost_layout_system_search_list
+      fi
+      if test x"$boost_inc" != x; then
+        # We are going to check whether the version of Boost installed
+        # in $boost_inc is usable by running a compilation that
+        # #includes it.  But if we pass a -I/some/path in which Boost
+        # is not installed, the compiler will just skip this -I and
+        # use other locations (either from CPPFLAGS, or from its list
+        # of system include directories).  As a result we would use
+        # header installed on the machine instead of the /some/path
+        # specified by the user.  So in that precise case (trying
+        # $boost_inc), make sure the version.hpp exists.
+        #
+        # Use test -e as there can be symlinks.
+        test -e "$boost_inc/boost/version.hpp" || continue
+        CPPFLAGS="$CPPFLAGS -I$boost_inc"
+      fi
+      AC_COMPILE_IFELSE([], [boost_cv_inc_path=yes], [boost_cv_version=no])
+      if test x"$boost_cv_inc_path" = xyes; then
+        if test x"$boost_inc" != x; then
+          boost_cv_inc_path=$boost_inc
+        fi
+        break 2
+      fi
+    done
+    done
+AC_LANG_POP([C++])dnl
+    ])
+    case $boost_cv_inc_path in #(
+      no)
+        boost_errmsg="cannot find Boost headers version >= $boost_version_req_string"
+        m4_if([$2], [],  [AC_MSG_ERROR([$boost_errmsg])],
+                        [AC_MSG_NOTICE([$boost_errmsg])])
+        $2
+        ;;#(
+      yes)
+        BOOST_CPPFLAGS=
+        ;;#(
+      *)
+        AC_SUBST([BOOST_CPPFLAGS], ["-I$boost_cv_inc_path"])dnl
+        ;;
+    esac
+  if test x"$boost_cv_inc_path" != xno; then
+  AC_DEFINE([HAVE_BOOST], [1],
+            [Defined if the requested minimum BOOST version is satisfied])
+  AC_CACHE_CHECK([for Boost's header version],
+    [boost_cv_lib_version],
+    [m4_pattern_allow([^BOOST_LIB_VERSION$])dnl
+     _BOOST_SED_CPP([/^boost-lib-version = /{s///;s/\"//g;p;q;}],
+                    [#include <boost/version.hpp>
+boost-lib-version = BOOST_LIB_VERSION],
+    [boost_cv_lib_version=`cat conftest.i`])])
+    # e.g. "134" for 1_34_1 or "135" for 1_35
+    boost_major_version=`echo "$boost_cv_lib_version" | sed 's/_//;s/_.*//'`
+    case $boost_major_version in #(
+      '' | *[[!0-9]]*)
+        AC_MSG_ERROR([invalid value: boost_major_version=$boost_major_version])
+        ;;
+    esac
+fi
+CPPFLAGS=$boost_save_CPPFLAGS
+])# BOOST_REQUIRE
+
+# BOOST_STATIC()
+# --------------
+# Add the "--enable-static-boost" configure argument. If this argument is given
+# on the command line, static versions of the libraries will be looked up.
+AC_DEFUN([BOOST_STATIC],
+  [AC_ARG_ENABLE([static-boost],
+     [AS_HELP_STRING([--enable-static-boost],
+               [Prefer the static boost libraries over the shared ones [no]])],
+     [enable_static_boost=yes],
+     [enable_static_boost=no])])# BOOST_STATIC
+
+# BOOST_FIND_HEADER([HEADER-NAME], [ACTION-IF-NOT-FOUND], [ACTION-IF-FOUND])
+# --------------------------------------------------------------------------
+# Wrapper around AC_CHECK_HEADER for Boost headers.  Useful to check for
+# some parts of the Boost library which are only made of headers and don't
+# require linking (such as Boost.Foreach).
+#
+# Default ACTION-IF-NOT-FOUND: Fail with a fatal error unless Boost couldn't be
+# found in the first place, in which case by default a notice is issued to the
+# user.  Presumably if we haven't died already it's because it's OK to not have
+# Boost, which is why only a notice is issued instead of a hard error.
+#
+# Default ACTION-IF-FOUND: define the preprocessor symbol HAVE_<HEADER-NAME> in
+# case of success # (where HEADER-NAME is written LIKE_THIS, e.g.,
+# HAVE_BOOST_FOREACH_HPP).
+AC_DEFUN([BOOST_FIND_HEADER],
+[AC_REQUIRE([BOOST_REQUIRE])dnl
+if test x"$boost_cv_inc_path" = xno; then
+  m4_default([$2], [AC_MSG_NOTICE([Boost not available, not searching for $1])])
+else
+AC_LANG_PUSH([C++])dnl
+boost_save_CPPFLAGS=$CPPFLAGS
+CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
+AC_CHECK_HEADER([$1],
+  [m4_default([$3], [AC_DEFINE(AS_TR_CPP([HAVE_$1]), [1],
+                               [Define to 1 if you have <$1>])])],
+  [m4_default([$2], [AC_MSG_ERROR([cannot find $1])])])
+CPPFLAGS=$boost_save_CPPFLAGS
+AC_LANG_POP([C++])dnl
+fi
+])# BOOST_FIND_HEADER
+
+
+# BOOST_FIND_LIB([LIB-NAME], [PREFERRED-RT-OPT], [HEADER-NAME], [CXX-TEST],
+#                [CXX-PROLOGUE])
+# -------------------------------------------------------------------------
+# Look for the Boost library LIB-NAME (e.g., LIB-NAME = `thread', for
+# libboost_thread).  Check that HEADER-NAME works and check that
+# libboost_LIB-NAME can link with the code CXX-TEST.  The optional argument
+# CXX-PROLOGUE can be used to include some C++ code before the `main'
+# function.
+#
+# Invokes BOOST_FIND_HEADER([HEADER-NAME]) (see above).
+#
+# Boost libraries typically come compiled with several flavors (with different
+# runtime options) so PREFERRED-RT-OPT is the preferred suffix.  A suffix is one
+# or more of the following letters: sgdpn (in that order).  s = static
+# runtime, d = debug build, g = debug/diagnostic runtime, p = STLPort build,
+# n = (unsure) STLPort build without iostreams from STLPort (it looks like `n'
+# must always be used along with `p').  Additionally, PREFERRED-RT-OPT can
+# start with `mt-' to indicate that there is a preference for multi-thread
+# builds.  Some sample values for PREFERRED-RT-OPT: (nothing), mt, d, mt-d, gdp
+# ...  If you want to make sure you have a specific version of Boost
+# (eg, >= 1.33) you *must* invoke BOOST_REQUIRE before this macro.
+AC_DEFUN([BOOST_FIND_LIB],
+[AC_REQUIRE([BOOST_REQUIRE])dnl
+AC_REQUIRE([_BOOST_FIND_COMPILER_TAG])dnl
+AC_REQUIRE([BOOST_STATIC])dnl
+AC_REQUIRE([_BOOST_GUESS_WHETHER_TO_USE_MT])dnl
+if test x"$boost_cv_inc_path" = xno; then
+  AC_MSG_NOTICE([Boost not available, not searching for the Boost $1 library])
+else
+dnl The else branch is huge and wasn't intended on purpose.
+AC_LANG_PUSH([C++])dnl
+AS_VAR_PUSHDEF([Boost_lib], [boost_cv_lib_$1])dnl
+AS_VAR_PUSHDEF([Boost_lib_LDFLAGS], [boost_cv_lib_$1_LDFLAGS])dnl
+AS_VAR_PUSHDEF([Boost_lib_LDPATH], [boost_cv_lib_$1_LDPATH])dnl
+AS_VAR_PUSHDEF([Boost_lib_LIBS], [boost_cv_lib_$1_LIBS])dnl
+BOOST_FIND_HEADER([$3])
+boost_save_CPPFLAGS=$CPPFLAGS
+CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
+# Now let's try to find the library.  The algorithm is as follows: first look
+# for a given library name according to the user's PREFERRED-RT-OPT.  For each
+# library name, we prefer to use the ones that carry the tag (toolset name).
+# Each library is searched through the various standard paths were Boost is
+# usually installed.  If we can't find the standard variants, we try to
+# enforce -mt (for instance on MacOSX, libboost_threads.dylib doesn't exist
+# but there's -obviously- libboost_threads-mt.dylib).
+AC_CACHE_CHECK([for the Boost $1 library], [Boost_lib],
+  [Boost_lib=no
+  case "$2" in #(
+    mt | mt-) boost_mt=-mt; boost_rtopt=;; #(
+    mt* | mt-*) boost_mt=-mt; boost_rtopt=`expr "X$2" : 'Xmt-*\(.*\)'`;; #(
+    *) boost_mt=; boost_rtopt=$2;;
+  esac
+  if test $enable_static_boost = yes; then
+    boost_rtopt="s$boost_rtopt"
+  fi
+  # Find the proper debug variant depending on what we've been asked to find.
+  case $boost_rtopt in #(
+    *d*) boost_rt_d=$boost_rtopt;; #(
+    *[[sgpn]]*) # Insert the `d' at the right place (in between `sg' and `pn')
+      boost_rt_d=`echo "$boost_rtopt" | sed 's/\(s*g*\)\(p*n*\)/\1\2/'`;; #(
+    *) boost_rt_d='-d';;
+  esac
+  # If the PREFERRED-RT-OPT are not empty, prepend a `-'.
+  test -n "$boost_rtopt" && boost_rtopt="-$boost_rtopt"
+  $boost_guess_use_mt && boost_mt=-mt
+  # Look for the abs path the static archive.
+  # $libext is computed by Libtool but let's make sure it's non empty.
+  test -z "$libext" &&
+    AC_MSG_ERROR([the libext variable is empty, did you invoke Libtool?])
+  boost_save_ac_objext=$ac_objext
+  # Generate the test file.
+  AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <$3>
+$5], [$4])])
+dnl Optimization hacks: compiling C++ is slow, especially with Boost.  What
+dnl we're trying to do here is guess the right combination of link flags
+dnl (LIBS / LDFLAGS) to use a given library.  This can take several
+dnl iterations before it succeeds and is thus *very* slow.  So what we do
+dnl instead is that we compile the code first (and thus get an object file,
+dnl typically conftest.o).  Then we try various combinations of link flags
+dnl until we succeed to link conftest.o in an executable.  The problem is
+dnl that the various TRY_LINK / COMPILE_IFELSE macros of Autoconf always
+dnl remove all the temporary files including conftest.o.  So the trick here
+dnl is to temporarily change the value of ac_objext so that conftest.o is
+dnl preserved accross tests.  This is obviously fragile and I will burn in
+dnl hell for not respecting Autoconf's documented interfaces, but in the
+dnl mean time, it optimizes the macro by a factor of 5 to 30.
+dnl Another small optimization: the first argument of AC_COMPILE_IFELSE left
+dnl empty because the test file is generated only once above (before we
+dnl start the for loops).
+  AC_COMPILE_IFELSE([],
+    [ac_objext=do_not_rm_me_plz],
+    [AC_MSG_ERROR([cannot compile a test that uses Boost $1])])
+  ac_objext=$boost_save_ac_objext
+  boost_failed_libs=
+# Don't bother to ident the 6 nested for loops, only the 2 innermost ones
+# matter.
+for boost_tag_ in -$boost_cv_lib_tag ''; do
+for boost_ver_ in -$boost_cv_lib_version ''; do
+for boost_mt_ in $boost_mt -mt ''; do
+for boost_rtopt_ in $boost_rtopt '' -d; do
+  for boost_lib in \
+    boost_$1$boost_tag_$boost_mt_$boost_rtopt_$boost_ver_ \
+    boost_$1$boost_tag_$boost_rtopt_$boost_ver_ \
+    boost_$1$boost_tag_$boost_mt_$boost_ver_ \
+    boost_$1$boost_tag_$boost_ver_
+  do
+    # Avoid testing twice the same lib
+    case $boost_failed_libs in #(
+      *@$boost_lib@*) continue;;
+    esac
+    # If with_boost is empty, we'll search in /lib first, which is not quite
+    # right so instead we'll try to a location based on where the headers are.
+    boost_tmp_lib=$with_boost
+    test x"$with_boost" = x && boost_tmp_lib=${boost_cv_inc_path%/include}
+    for boost_ldpath in "$boost_tmp_lib/lib" '' \
+             /opt/local/lib* /usr/local/lib* /opt/lib* /usr/lib* \
+             "$with_boost" C:/Boost/lib /lib*
+    do
+      test -e "$boost_ldpath" || continue
+      boost_save_LDFLAGS=$LDFLAGS
+      # Are we looking for a static library?
+      case $boost_ldpath:$boost_rtopt_ in #(
+        *?*:*s*) # Yes (Non empty boost_ldpath + s in rt opt)
+          Boost_lib_LIBS="$boost_ldpath/lib$boost_lib.$libext"
+          test -e "$Boost_lib_LIBS" || continue;; #(
+        *) # No: use -lboost_foo to find the shared library.
+          Boost_lib_LIBS="-l$boost_lib";;
+      esac
+      boost_save_LIBS=$LIBS
+      LIBS="$Boost_lib_LIBS $LIBS"
+      test x"$boost_ldpath" != x && LDFLAGS="$LDFLAGS -L$boost_ldpath"
+dnl First argument of AC_LINK_IFELSE left empty because the test file is
+dnl generated only once above (before we start the for loops).
+      _BOOST_AC_LINK_IFELSE([],
+                            [Boost_lib=yes], [Boost_lib=no])
+      ac_objext=$boost_save_ac_objext
+      LDFLAGS=$boost_save_LDFLAGS
+      LIBS=$boost_save_LIBS
+      if test x"$Boost_lib" = xyes; then
+        # Check or used cached result of whether or not using -R or -rpath makes sense.
+        # Some implementations of ld, such as for Mac OSX, require -rpath but
+        # -R is the flag known to work on other systems.
+        # https://github.com/tsuna/boost.m4/issues/19
+        AC_CACHE_VAL([boost_cv_rpath_link_ldflag],
+          [for boost_cv_rpath_link_ldflag in -Wl,-R, -Wl,-rpath,; do
+            LDFLAGS="$boost_save_LDFLAGS -L$boost_ldpath $boost_cv_rpath_link_ldflag$boost_ldpath"
+            LIBS="$Boost_lib_LIBS $boost_save_LIBS"
+            _BOOST_AC_LINK_IFELSE([],
+              [boost_rpath_link_ldflag_found=yes
+              break],
+              [boost_rpath_link_ldflag_found=no])
+          done
+          AS_IF([test "x$boost_rpath_link_ldflag_found" != "xyes"],
+            [AC_MSG_ERROR([Unable to determine whether to use -R or -rpath])])
+          LDFLAGS=$boost_save_LDFLAGS
+          LIBS=$boost_save_LIBS
+          ])
+        Boost_lib_LDFLAGS="-L$boost_ldpath $boost_cv_rpath_link_ldflag$boost_ldpath"
+        Boost_lib_LDPATH="$boost_ldpath"
+        break 6
+      else
+        boost_failed_libs="$boost_failed_libs@$boost_lib@"
+      fi
+    done
+  done
+done
+done
+done
+done
+rm -f conftest.$ac_objext
+])
+case $Boost_lib in #(
+  no) _AC_MSG_LOG_CONFTEST
+    AC_MSG_ERROR([cannot find the flags to link with Boost $1])
+    ;;
+esac
+AC_SUBST(AS_TR_CPP([BOOST_$1_LDFLAGS]), [$Boost_lib_LDFLAGS])dnl
+AC_SUBST(AS_TR_CPP([BOOST_$1_LDPATH]), [$Boost_lib_LDPATH])dnl
+AC_SUBST([BOOST_LDPATH], [$Boost_lib_LDPATH])dnl
+AC_SUBST(AS_TR_CPP([BOOST_$1_LIBS]), [$Boost_lib_LIBS])dnl
+CPPFLAGS=$boost_save_CPPFLAGS
+AS_VAR_POPDEF([Boost_lib])dnl
+AS_VAR_POPDEF([Boost_lib_LDFLAGS])dnl
+AS_VAR_POPDEF([Boost_lib_LDPATH])dnl
+AS_VAR_POPDEF([Boost_lib_LIBS])dnl
+AC_LANG_POP([C++])dnl
+fi
+])# BOOST_FIND_LIB
+
+
+# --------------------------------------- #
+# Checks for the various Boost libraries. #
+# --------------------------------------- #
+
+# List of boost libraries: http://www.boost.org/libs/libraries.htm
+# The page http://beta.boost.org/doc/libs is useful: it gives the first release
+# version of each library (among other things).
+
+# BOOST_DEFUN(LIBRARY, CODE)
+# --------------------------
+# Define BOOST_<LIBRARY-UPPERCASE> as a macro that runs CODE.
+#
+# Use indir to avoid the warning on underquoted macro name given to AC_DEFUN.
+m4_define([BOOST_DEFUN],
+[m4_indir([AC_DEFUN],
+          m4_toupper([BOOST_$1]),
+[m4_pushdef([BOOST_Library], [$1])dnl
+$2
+m4_popdef([BOOST_Library])dnl
+])
+])
+
+# BOOST_ARRAY()
+# -------------
+# Look for Boost.Array
+BOOST_DEFUN([Array],
+[BOOST_FIND_HEADER([boost/array.hpp])])
+
+
+# BOOST_ASIO()
+# ------------
+# Look for Boost.Asio (new in Boost 1.35).
+BOOST_DEFUN([Asio],
+[AC_REQUIRE([BOOST_SYSTEM])dnl
+BOOST_FIND_HEADER([boost/asio.hpp])])
+
+
+# BOOST_BIND()
+# ------------
+# Look for Boost.Bind
+BOOST_DEFUN([Bind],
+[BOOST_FIND_HEADER([boost/bind.hpp])])
+
+
+# BOOST_CHRONO()
+# ------------------
+# Look for Boost.Chrono
+BOOST_DEFUN([Chrono],
+[# Do we have to check for Boost.System?  This link-time dependency was
+# added as of 1.35.0.  If we have a version <1.35, we must not attempt to
+# find Boost.System as it didn't exist by then.
+if test $boost_major_version -ge 135; then
+BOOST_SYSTEM([$1])
+fi # end of the Boost.System check.
+boost_filesystem_save_LIBS=$LIBS
+boost_filesystem_save_LDFLAGS=$LDFLAGS
+m4_pattern_allow([^BOOST_SYSTEM_(LIBS|LDFLAGS)$])dnl
+LIBS="$LIBS $BOOST_SYSTEM_LIBS"
+LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
+BOOST_FIND_LIB([chrono], [$1],
+                [boost/chrono.hpp],
+                [boost::chrono::thread_clock d;])
+if test $enable_static_boost = yes && test $boost_major_version -ge 135; then
+    AC_SUBST([BOOST_FILESYSTEM_LIBS], ["$BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS"])
+fi
+LIBS=$boost_filesystem_save_LIBS
+LDFLAGS=$boost_filesystem_save_LDFLAGS
+
+])# BOOST_CHRONO
+
+
+# BOOST_CONVERSION()
+# ------------------
+# Look for Boost.Conversion (cast / lexical_cast)
+BOOST_DEFUN([Conversion],
+[BOOST_FIND_HEADER([boost/cast.hpp])
+BOOST_FIND_HEADER([boost/lexical_cast.hpp])
+])# BOOST_CONVERSION
+
+
+# BOOST_CRC()
+# -----------
+# Look for Boost.CRC
+BOOST_DEFUN([CRC],
+[BOOST_FIND_HEADER([boost/crc.hpp])
+])# BOOST_CRC
+
+
+# BOOST_DATE_TIME([PREFERRED-RT-OPT])
+# -----------------------------------
+# Look for Boost.Date_Time.  For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Date_Time],
+[BOOST_FIND_LIB([date_time], [$1],
+                [boost/date_time/posix_time/posix_time.hpp],
+                [boost::posix_time::ptime t;])
+])# BOOST_DATE_TIME
+
+
+# BOOST_FILESYSTEM([PREFERRED-RT-OPT])
+# ------------------------------------
+# Look for Boost.Filesystem.  For the documentation of PREFERRED-RT-OPT, see
+# the documentation of BOOST_FIND_LIB above.
+# Do not check for boost/filesystem.hpp because this file was introduced in
+# 1.34.
+BOOST_DEFUN([Filesystem],
+[# Do we have to check for Boost.System?  This link-time dependency was
+# added as of 1.35.0.  If we have a version <1.35, we must not attempt to
+# find Boost.System as it didn't exist by then.
+if test $boost_major_version -ge 135; then
+BOOST_SYSTEM([$1])
+fi # end of the Boost.System check.
+boost_filesystem_save_LIBS=$LIBS
+boost_filesystem_save_LDFLAGS=$LDFLAGS
+m4_pattern_allow([^BOOST_SYSTEM_(LIBS|LDFLAGS)$])dnl
+LIBS="$LIBS $BOOST_SYSTEM_LIBS"
+LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
+BOOST_FIND_LIB([filesystem], [$1],
+                [boost/filesystem/path.hpp], [boost::filesystem::path p;])
+if test $enable_static_boost = yes && test $boost_major_version -ge 135; then
+    AC_SUBST([BOOST_FILESYSTEM_LIBS], ["$BOOST_FILESYSTEM_LIBS $BOOST_SYSTEM_LIBS"])
+fi
+LIBS=$boost_filesystem_save_LIBS
+LDFLAGS=$boost_filesystem_save_LDFLAGS
+])# BOOST_FILESYSTEM
+
+
+# BOOST_FOREACH()
+# ---------------
+# Look for Boost.Foreach
+BOOST_DEFUN([Foreach],
+[BOOST_FIND_HEADER([boost/foreach.hpp])])
+
+
+# BOOST_FORMAT()
+# --------------
+# Look for Boost.Format
+# Note: we can't check for boost/format/format_fwd.hpp because the header isn't
+# standalone.  It can't be compiled because it triggers the following error:
+# boost/format/detail/config_macros.hpp:88: error: 'locale' in namespace 'std'
+#                                                  does not name a type
+BOOST_DEFUN([Format],
+[BOOST_FIND_HEADER([boost/format.hpp])])
+
+
+# BOOST_FUNCTION()
+# ----------------
+# Look for Boost.Function
+BOOST_DEFUN([Function],
+[BOOST_FIND_HEADER([boost/function.hpp])])
+
+
+# BOOST_GEOMETRY()
+# ----------------
+# Look for Boost.Geometry (new since 1.47.0).
+BOOST_DEFUN([Geometry],
+[BOOST_FIND_HEADER([boost/geometry.hpp])
+])# BOOST_GEOMETRY
+
+
+# BOOST_GRAPH([PREFERRED-RT-OPT])
+# -------------------------------
+# Look for Boost.Graphs.  For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Graph],
+[BOOST_FIND_LIB([graph], [$1],
+                [boost/graph/adjacency_list.hpp], [boost::adjacency_list<> g;])
+])# BOOST_GRAPH
+
+
+# BOOST_IOSTREAMS([PREFERRED-RT-OPT])
+# -----------------------------------
+# Look for Boost.IOStreams.  For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([IOStreams],
+[BOOST_FIND_LIB([iostreams], [$1],
+                [boost/iostreams/device/file_descriptor.hpp],
+                [boost::iostreams::file_descriptor fd; fd.close();])
+])# BOOST_IOSTREAMS
+
+
+# BOOST_HASH()
+# ------------
+# Look for Boost.Functional/Hash
+BOOST_DEFUN([Hash],
+[BOOST_FIND_HEADER([boost/functional/hash.hpp])])
+
+
+# BOOST_LAMBDA()
+# --------------
+# Look for Boost.Lambda
+BOOST_DEFUN([Lambda],
+[BOOST_FIND_HEADER([boost/lambda/lambda.hpp])])
+
+
+# BOOST_LOG([PREFERRED-RT-OPT])
+# -----------------------------
+# Look for Boost.Log For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Log],
+[BOOST_FIND_LIB([log], [$1],
+    [boost/log/core/core.hpp],
+    [boost::log::attribute a; a.get_value();])
+])# BOOST_LOG
+
+
+# BOOST_LOG_SETUP([PREFERRED-RT-OPT])
+# -----------------------------------
+# Look for Boost.Log For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Log_Setup],
+[AC_REQUIRE([BOOST_LOG])dnl
+BOOST_FIND_LIB([log_setup], [$1],
+    [boost/log/utility/init/from_settings.hpp],
+    [boost::log::basic_settings<char> bs; bs.empty();])
+])# BOOST_LOG_SETUP
+
+
+# BOOST_MATH()
+# ------------
+# Look for Boost.Math
+# TODO: This library isn't header-only but it comes in multiple different
+# flavors that don't play well with BOOST_FIND_LIB (e.g, libboost_math_c99,
+# libboost_math_c99f, libboost_math_c99l, libboost_math_tr1,
+# libboost_math_tr1f, libboost_math_tr1l).  This macro must be fixed to do the
+# right thing anyway.
+BOOST_DEFUN([Math],
+[BOOST_FIND_HEADER([boost/math/special_functions.hpp])])
+
+
+# BOOST_MULTIARRAY()
+# ------------------
+# Look for Boost.MultiArray
+BOOST_DEFUN([MultiArray],
+[BOOST_FIND_HEADER([boost/multi_array.hpp])])
+
+
+# BOOST_NUMERIC_CONVERSION()
+# --------------------------
+# Look for Boost.NumericConversion (policy-based numeric conversion)
+BOOST_DEFUN([Numeric_Conversion],
+[BOOST_FIND_HEADER([boost/numeric/conversion/converter.hpp])
+])# BOOST_NUMERIC_CONVERSION
+
+
+# BOOST_OPTIONAL()
+# ----------------
+# Look for Boost.Optional
+BOOST_DEFUN([Optional],
+[BOOST_FIND_HEADER([boost/optional.hpp])])
+
+
+# BOOST_PREPROCESSOR()
+# --------------------
+# Look for Boost.Preprocessor
+BOOST_DEFUN([Preprocessor],
+[BOOST_FIND_HEADER([boost/preprocessor/repeat.hpp])])
+
+
+# BOOST_UNORDERED()
+# -----------------
+# Look for Boost.Unordered
+BOOST_DEFUN([Unordered],
+[BOOST_FIND_HEADER([boost/unordered_map.hpp])])
+
+
+# BOOST_UUID()
+# ------------
+# Look for Boost.Uuid
+BOOST_DEFUN([Uuid],
+[BOOST_FIND_HEADER([boost/uuid/uuid.hpp])])
+
+
+# BOOST_PROGRAM_OPTIONS([PREFERRED-RT-OPT])
+# -----------------------------------------
+# Look for Boost.Program_options.  For the documentation of PREFERRED-RT-OPT,
+# see the documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Program_Options],
+[BOOST_FIND_LIB([program_options], [$1],
+                [boost/program_options.hpp],
+                [boost::program_options::options_description d("test");])
+])# BOOST_PROGRAM_OPTIONS
+
+
+
+# _BOOST_PYTHON_CONFIG(VARIABLE, FLAG)
+# ------------------------------------
+# Save VARIABLE, and define it via `python-config --FLAG`.
+# Substitute BOOST_PYTHON_VARIABLE.
+m4_define([_BOOST_PYTHON_CONFIG],
+[AC_SUBST([BOOST_PYTHON_$1],
+          [`python-config --$2 2>/dev/null`])dnl
+boost_python_save_$1=$$1
+$1="$$1 $BOOST_PYTHON_$1"])
+
+
+# BOOST_PYTHON([PREFERRED-RT-OPT])
+# --------------------------------
+# Look for Boost.Python.  For the documentation of PREFERRED-RT-OPT,
+# see the documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Python],
+[_BOOST_PYTHON_CONFIG([CPPFLAGS], [includes])
+_BOOST_PYTHON_CONFIG([LDFLAGS],   [ldflags])
+_BOOST_PYTHON_CONFIG([LIBS],      [libs])
+m4_pattern_allow([^BOOST_PYTHON_MODULE$])dnl
+BOOST_FIND_LIB([python], [$1],
+               [boost/python.hpp],
+               [], [BOOST_PYTHON_MODULE(empty) {}])
+CPPFLAGS=$boost_python_save_CPPFLAGS
+LDFLAGS=$boost_python_save_LDFLAGS
+LIBS=$boost_python_save_LIBS
+])# BOOST_PYTHON
+
+
+# BOOST_REF()
+# -----------
+# Look for Boost.Ref
+BOOST_DEFUN([Ref],
+[BOOST_FIND_HEADER([boost/ref.hpp])])
+
+
+# BOOST_REGEX([PREFERRED-RT-OPT])
+# -------------------------------
+# Look for Boost.Regex.  For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Regex],
+[BOOST_FIND_LIB([regex], [$1],
+                [boost/regex.hpp],
+                [boost::regex exp("*"); boost::regex_match("foo", exp);])
+])# BOOST_REGEX
+
+
+# BOOST_SERIALIZATION([PREFERRED-RT-OPT])
+# ---------------------------------------
+# Look for Boost.Serialization.  For the documentation of PREFERRED-RT-OPT, see
+# the documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Serialization],
+[BOOST_FIND_LIB([serialization], [$1],
+                [boost/archive/text_oarchive.hpp],
+                [std::ostream* o = 0; // Cheap way to get an ostream...
+                boost::archive::text_oarchive t(*o);])
+])# BOOST_SERIALIZATION
+
+
+# BOOST_SIGNALS([PREFERRED-RT-OPT])
+# ---------------------------------
+# Look for Boost.Signals.  For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Signals],
+[BOOST_FIND_LIB([signals], [$1],
+                [boost/signal.hpp],
+                [boost::signal<void ()> s;])
+])# BOOST_SIGNALS
+
+
+# BOOST_SIGNALS2()
+# ----------------
+# Look for Boost.Signals2 (new since 1.39.0).
+BOOST_DEFUN([Signals2],
+[BOOST_FIND_HEADER([boost/signals2.hpp])
+])# BOOST_SIGNALS2
+
+
+# BOOST_SMART_PTR()
+# -----------------
+# Look for Boost.SmartPtr
+BOOST_DEFUN([Smart_Ptr],
+[BOOST_FIND_HEADER([boost/scoped_ptr.hpp])
+BOOST_FIND_HEADER([boost/shared_ptr.hpp])
+])
+
+
+# BOOST_STATICASSERT()
+# --------------------
+# Look for Boost.StaticAssert
+BOOST_DEFUN([StaticAssert],
+[BOOST_FIND_HEADER([boost/static_assert.hpp])])
+
+
+# BOOST_STRING_ALGO()
+# -------------------
+# Look for Boost.StringAlgo
+BOOST_DEFUN([String_Algo],
+[BOOST_FIND_HEADER([boost/algorithm/string.hpp])
+])
+
+
+# BOOST_SYSTEM([PREFERRED-RT-OPT])
+# --------------------------------
+# Look for Boost.System.  For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.  This library was introduced in Boost
+# 1.35.0.
+BOOST_DEFUN([System],
+[BOOST_FIND_LIB([system], [$1],
+                [boost/system/error_code.hpp],
+                [boost::system::error_code e; e.clear();])
+])# BOOST_SYSTEM
+
+
+# BOOST_TEST([PREFERRED-RT-OPT])
+# ------------------------------
+# Look for Boost.Test.  For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Test],
+[m4_pattern_allow([^BOOST_CHECK$])dnl
+BOOST_FIND_LIB([unit_test_framework], [$1],
+               [boost/test/unit_test.hpp], [BOOST_CHECK(2 == 2);],
+               [using boost::unit_test::test_suite;
+               test_suite* init_unit_test_suite(int argc, char ** argv)
+               { return NULL; }])
+])# BOOST_TEST
+
+
+# BOOST_THREADS([PREFERRED-RT-OPT])
+# ---------------------------------
+# Look for Boost.Thread.  For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.
+# FIXME: Provide an alias "BOOST_THREAD".
+BOOST_DEFUN([Threads],
+[dnl Having the pthread flag is required at least on GCC3 where
+dnl boost/thread.hpp would complain if we try to compile without
+dnl -pthread on GNU/Linux.
+AC_REQUIRE([_BOOST_PTHREAD_FLAG])dnl
+boost_threads_save_LIBS=$LIBS
+boost_threads_save_LDFLAGS=$LDFLAGS
+boost_threads_save_CPPFLAGS=$CPPFLAGS
+# Link-time dependency from thread to system was added as of 1.49.0.
+if test $boost_major_version -ge 149; then
+BOOST_SYSTEM([$1])
+fi # end of the Boost.System check.
+m4_pattern_allow([^BOOST_SYSTEM_(LIBS|LDFLAGS)$])dnl
+LIBS="$LIBS $BOOST_SYSTEM_LIBS $boost_cv_pthread_flag"
+LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS"
+# Yes, we *need* to put the -pthread thing in CPPFLAGS because with GCC3,
+# boost/thread.hpp will trigger a #error if -pthread isn't used:
+#   boost/config/requires_threads.hpp:47:5: #error "Compiler threading support
+#   is not turned on. Please set the correct command line options for
+#   threading: -pthread (Linux), -pthreads (Solaris) or -mthreads (Mingw32)"
+CPPFLAGS="$CPPFLAGS $boost_cv_pthread_flag"
+
+# When compiling for the Windows platform, the threads library is named
+# differently.
+case $host_os in
+  (*mingw*)
+    BOOST_FIND_LIB([thread_win32], [$1],
+                   [boost/thread.hpp], [boost::thread t; boost::mutex m;])
+    BOOST_THREAD_LDFLAGS=$BOOST_THREAD_WIN32_LDFLAGS
+    BOOST_THREAD_LDPATH=$BOOST_THREAD_WIN32_LDPATH
+    BOOST_THREAD_LIBS=$BOOST_THREAD_WIN32_LIBS
+  ;;
+  (*)
+    BOOST_FIND_LIB([thread], [$1],
+                   [boost/thread.hpp], [boost::thread t; boost::mutex m;])
+  ;;
+esac
+
+BOOST_THREAD_LIBS="$BOOST_THREAD_LIBS $BOOST_SYSTEM_LIBS $boost_cv_pthread_flag"
+BOOST_THREAD_LDFLAGS="$BOOST_SYSTEM_LDFLAGS"
+BOOST_CPPFLAGS="$BOOST_CPPFLAGS $boost_cv_pthread_flag"
+LIBS=$boost_threads_save_LIBS
+LDFLAGS=$boost_threads_save_LDFLAGS
+CPPFLAGS=$boost_threads_save_CPPFLAGS
+])# BOOST_THREADS
+
+
+# BOOST_TOKENIZER()
+# -----------------
+# Look for Boost.Tokenizer
+BOOST_DEFUN([Tokenizer],
+[BOOST_FIND_HEADER([boost/tokenizer.hpp])])
+
+
+# BOOST_TRIBOOL()
+# ---------------
+# Look for Boost.Tribool
+BOOST_DEFUN([Tribool],
+[BOOST_FIND_HEADER([boost/logic/tribool_fwd.hpp])
+BOOST_FIND_HEADER([boost/logic/tribool.hpp])
+])
+
+
+# BOOST_TUPLE()
+# -------------
+# Look for Boost.Tuple
+BOOST_DEFUN([Tuple],
+[BOOST_FIND_HEADER([boost/tuple/tuple.hpp])])
+
+
+# BOOST_TYPETRAITS()
+# --------------------
+# Look for Boost.TypeTraits
+BOOST_DEFUN([TypeTraits],
+[BOOST_FIND_HEADER([boost/type_traits.hpp])])
+
+
+# BOOST_UTILITY()
+# ---------------
+# Look for Boost.Utility (noncopyable, result_of, base-from-member idiom,
+# etc.)
+BOOST_DEFUN([Utility],
+[BOOST_FIND_HEADER([boost/utility.hpp])])
+
+
+# BOOST_VARIANT()
+# ---------------
+# Look for Boost.Variant.
+BOOST_DEFUN([Variant],
+[BOOST_FIND_HEADER([boost/variant/variant_fwd.hpp])
+BOOST_FIND_HEADER([boost/variant.hpp])])
+
+# BOOST_POINTERCONTAINER()
+# ------------------------
+# Look for Boost.PointerContainer
+BOOST_DEFUN([Pointer_Container],
+[BOOST_FIND_HEADER([boost/ptr_container/ptr_deque.hpp])
+BOOST_FIND_HEADER([boost/ptr_container/ptr_list.hpp])
+BOOST_FIND_HEADER([boost/ptr_container/ptr_vector.hpp])
+BOOST_FIND_HEADER([boost/ptr_container/ptr_array.hpp])
+BOOST_FIND_HEADER([boost/ptr_container/ptr_set.hpp])
+BOOST_FIND_HEADER([boost/ptr_container/ptr_map.hpp])
+])# BOOST_POINTERCONTAINER
+
+# BOOST_WAVE([PREFERRED-RT-OPT])
+# ------------------------------
+# NOTE: If you intend to use Wave/Spirit with thread support, make sure you
+# call BOOST_THREADS first.
+# Look for Boost.Wave.  For the documentation of PREFERRED-RT-OPT, see the
+# documentation of BOOST_FIND_LIB above.
+BOOST_DEFUN([Wave],
+[AC_REQUIRE([BOOST_FILESYSTEM])dnl
+AC_REQUIRE([BOOST_DATE_TIME])dnl
+boost_wave_save_LIBS=$LIBS
+boost_wave_save_LDFLAGS=$LDFLAGS
+m4_pattern_allow([^BOOST_((FILE)?SYSTEM|DATE_TIME|THREAD)_(LIBS|LDFLAGS)$])dnl
+LIBS="$LIBS $BOOST_SYSTEM_LIBS $BOOST_FILESYSTEM_LIBS $BOOST_DATE_TIME_LIBS \
+$BOOST_THREAD_LIBS"
+LDFLAGS="$LDFLAGS $BOOST_SYSTEM_LDFLAGS $BOOST_FILESYSTEM_LDFLAGS \
+$BOOST_DATE_TIME_LDFLAGS $BOOST_THREAD_LDFLAGS"
+BOOST_FIND_LIB([wave], [$1],
+                [boost/wave.hpp],
+                [boost::wave::token_id id; get_token_name(id);])
+LIBS=$boost_wave_save_LIBS
+LDFLAGS=$boost_wave_save_LDFLAGS
+])# BOOST_WAVE
+
+
+# BOOST_XPRESSIVE()
+# -----------------
+# Look for Boost.Xpressive (new since 1.36.0).
+BOOST_DEFUN([Xpressive],
+[BOOST_FIND_HEADER([boost/xpressive/xpressive.hpp])])
+
+
+# ----------------- #
+# Internal helpers. #
+# ----------------- #
+
+
+# _BOOST_PTHREAD_FLAG()
+# ---------------------
+# Internal helper for BOOST_THREADS.  Based on ACX_PTHREAD:
+# http://autoconf-archive.cryp.to/acx_pthread.html
+AC_DEFUN([_BOOST_PTHREAD_FLAG],
+[AC_REQUIRE([AC_PROG_CXX])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_LANG_PUSH([C++])dnl
+AC_CACHE_CHECK([for the flags needed to use pthreads], [boost_cv_pthread_flag],
+[ boost_cv_pthread_flag=
+  # The ordering *is* (sometimes) important.  Some notes on the
+  # individual items follow:
+  # (none): in case threads are in libc; should be tried before -Kthread and
+  #       other compiler flags to prevent continual compiler warnings
+  # -lpthreads: AIX (must check this before -lpthread)
+  # -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
+  # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+  # -llthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+  # -pthread: GNU Linux/GCC (kernel threads), BSD/GCC (userland threads)
+  # -pthreads: Solaris/GCC
+  # -mthreads: MinGW32/GCC, Lynx/GCC
+  # -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
+  #      doesn't hurt to check since this sometimes defines pthreads too;
+  #      also defines -D_REENTRANT)
+  #      ... -mt is also the pthreads flag for HP/aCC
+  # -lpthread: GNU Linux, etc.
+  # --thread-safe: KAI C++
+  case $host_os in #(
+    *solaris*)
+      # On Solaris (at least, for some versions), libc contains stubbed
+      # (non-functional) versions of the pthreads routines, so link-based
+      # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
+      # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
+      # a function called by this macro, so we could check for that, but
+      # who knows whether they'll stub that too in a future libc.)  So,
+      # we'll just look for -pthreads and -lpthread first:
+      boost_pthread_flags="-pthreads -lpthread -mt -pthread";; #(
+    *)
+      boost_pthread_flags="-lpthreads -Kthread -kthread -llthread -pthread \
+                           -pthreads -mthreads -lpthread --thread-safe -mt";;
+  esac
+  # Generate the test file.
+  AC_LANG_CONFTEST([AC_LANG_PROGRAM([#include <pthread.h>],
+    [pthread_t th; pthread_join(th, 0);
+    pthread_attr_init(0); pthread_cleanup_push(0, 0);
+    pthread_create(0,0,0,0); pthread_cleanup_pop(0);])])
+  for boost_pthread_flag in '' $boost_pthread_flags; do
+    boost_pthread_ok=false
+dnl Re-use the test file already generated.
+    boost_pthreads__save_LIBS=$LIBS
+    LIBS="$LIBS $boost_pthread_flag"
+    AC_LINK_IFELSE([],
+      [if grep ".*$boost_pthread_flag" conftest.err; then
+         echo "This flag seems to have triggered warnings" >&AS_MESSAGE_LOG_FD
+       else
+         boost_pthread_ok=:; boost_cv_pthread_flag=$boost_pthread_flag
+       fi])
+    LIBS=$boost_pthreads__save_LIBS
+    $boost_pthread_ok && break
+  done
+])
+AC_LANG_POP([C++])dnl
+])# _BOOST_PTHREAD_FLAG
+
+
+# _BOOST_gcc_test(MAJOR, MINOR)
+# -----------------------------
+# Internal helper for _BOOST_FIND_COMPILER_TAG.
+m4_define([_BOOST_gcc_test],
+["defined __GNUC__ && __GNUC__ == $1 && __GNUC_MINOR__ == $2 && !defined __ICC @ gcc$1$2"])dnl
+
+
+# _BOOST_FIND_COMPILER_TAG()
+# --------------------------
+# Internal.  When Boost is installed without --layout=system, each library
+# filename will hold a suffix that encodes the compiler used during the
+# build.  The Boost build system seems to call this a `tag'.
+AC_DEFUN([_BOOST_FIND_COMPILER_TAG],
+[AC_REQUIRE([AC_PROG_CXX])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_CACHE_CHECK([for the toolset name used by Boost for $CXX], [boost_cv_lib_tag],
+[boost_cv_lib_tag=unknown
+if test x$boost_cv_inc_path != xno; then
+  AC_LANG_PUSH([C++])dnl
+  # The following tests are mostly inspired by boost/config/auto_link.hpp
+  # The list is sorted to most recent/common to oldest compiler (in order
+  # to increase the likelihood of finding the right compiler with the
+  # least number of compilation attempt).
+  # Beware that some tests are sensible to the order (for instance, we must
+  # look for MinGW before looking for GCC3).
+  # I used one compilation test per compiler with a #error to recognize
+  # each compiler so that it works even when cross-compiling (let me know
+  # if you know a better approach).
+  # Known missing tags (known from Boost's tools/build/v2/tools/common.jam):
+  #   como, edg, kcc, bck, mp, sw, tru, xlc
+  # I'm not sure about my test for `il' (be careful: Intel's ICC pre-defines
+  # the same defines as GCC's).
+  for i in \
+    _BOOST_gcc_test(4, 8) \
+    _BOOST_gcc_test(4, 7) \
+    _BOOST_gcc_test(4, 6) \
+    _BOOST_gcc_test(4, 5) \
+    _BOOST_gcc_test(4, 4) \
+    _BOOST_gcc_test(4, 3) \
+    _BOOST_gcc_test(4, 2) \
+    _BOOST_gcc_test(4, 1) \
+    _BOOST_gcc_test(4, 0) \
+    "defined __GNUC__ && __GNUC__ == 3 && !defined __ICC \
+     && (defined WIN32 || defined WINNT || defined _WIN32 || defined __WIN32 \
+         || defined __WIN32__ || defined __WINNT || defined __WINNT__) @ mgw" \
+    _BOOST_gcc_test(3, 4) \
+    _BOOST_gcc_test(3, 3) \
+    "defined _MSC_VER && _MSC_VER >= 1500 @ vc90" \
+    "defined _MSC_VER && _MSC_VER == 1400 @ vc80" \
+    _BOOST_gcc_test(3, 2) \
+    "defined _MSC_VER && _MSC_VER == 1310 @ vc71" \
+    _BOOST_gcc_test(3, 1) \
+    _BOOST_gcc_test(3, 0) \
+    "defined __BORLANDC__ @ bcb" \
+    "defined __ICC && (defined __unix || defined __unix__) @ il" \
+    "defined __ICL @ iw" \
+    "defined _MSC_VER && _MSC_VER == 1300 @ vc7" \
+    _BOOST_gcc_test(2, 95) \
+    "defined __MWERKS__ && __MWERKS__ <= 0x32FF @ cw9" \
+    "defined _MSC_VER && _MSC_VER < 1300 && !defined UNDER_CE @ vc6" \
+    "defined _MSC_VER && _MSC_VER < 1300 && defined UNDER_CE @ evc4" \
+    "defined __MWERKS__ && __MWERKS__ <= 0x31FF @ cw8"
+  do
+    boost_tag_test=`expr "X$i" : 'X\([[^@]]*\) @ '`
+    boost_tag=`expr "X$i" : 'X[[^@]]* @ \(.*\)'`
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#if $boost_tag_test
+/* OK */
+#else
+# error $boost_tag_test
+#endif
+]])], [boost_cv_lib_tag=$boost_tag; break], [])
+  done
+AC_LANG_POP([C++])dnl
+  case $boost_cv_lib_tag in #(
+    # Some newer (>= 1.35?) versions of Boost seem to only use "gcc" as opposed
+    # to "gcc41" for instance.
+    *-gcc | *'-gcc ') :;; #(  Don't re-add -gcc: it's already in there.
+    gcc*)
+      boost_tag_x=
+      case $host_os in #(
+        darwin*)
+          if test $boost_major_version -ge 136; then
+            # The `x' added in r46793 of Boost.
+            boost_tag_x=x
+          fi;;
+      esac
+      # We can specify multiple tags in this variable because it's used by
+      # BOOST_FIND_LIB that does a `for tag in -$boost_cv_lib_tag' ...
+      boost_cv_lib_tag="$boost_tag_x$boost_cv_lib_tag -${boost_tag_x}gcc"
+      ;; #(
+    unknown)
+      AC_MSG_WARN([[could not figure out which toolset name to use for $CXX]])
+      boost_cv_lib_tag=
+      ;;
+  esac
+fi])dnl end of AC_CACHE_CHECK
+])# _BOOST_FIND_COMPILER_TAG
+
+
+# _BOOST_GUESS_WHETHER_TO_USE_MT()
+# --------------------------------
+# Compile a small test to try to guess whether we should favor MT (Multi
+# Thread) flavors of Boost.  Sets boost_guess_use_mt accordingly.
+AC_DEFUN([_BOOST_GUESS_WHETHER_TO_USE_MT],
+[# Check whether we do better use `mt' even though we weren't ask to.
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#if defined _REENTRANT || defined _MT || defined __MT__
+/* use -mt */
+#else
+# error MT not needed
+#endif
+]])], [boost_guess_use_mt=:], [boost_guess_use_mt=false])
+])
+
+# _BOOST_AC_LINK_IFELSE(PROGRAM, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
+# -------------------------------------------------------------------
+# Fork of _AC_LINK_IFELSE that preserves conftest.o across calls.  Fragile,
+# will break when Autoconf changes its internals.  Requires that you manually
+# rm -f conftest.$ac_objext in between to really different tests, otherwise
+# you will try to link a conftest.o left behind by a previous test.
+# Used to aggressively optimize BOOST_FIND_LIB (see the big comment in this
+# macro).
+#
+# Don't use "break" in the actions, as it would short-circuit some code
+# this macro runs after the actions.
+m4_define([_BOOST_AC_LINK_IFELSE],
+[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
+rm -f conftest$ac_exeext
+boost_save_ac_ext=$ac_ext
+boost_use_source=:
+# If we already have a .o, re-use it.  We change $ac_ext so that $ac_link
+# tries to link the existing object file instead of compiling from source.
+test -f conftest.$ac_objext && ac_ext=$ac_objext && boost_use_source=false &&
+  _AS_ECHO_LOG([re-using the existing conftest.$ac_objext])
+AS_IF([_AC_DO_STDERR($ac_link) && {
+	 test -z "$ac_[]_AC_LANG_ABBREV[]_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 $as_executable_p conftest$ac_exeext
+dnl FIXME: use AS_TEST_X instead when 2.61 is widespread enough.
+       }],
+      [$2],
+      [if $boost_use_source; then
+         _AC_MSG_LOG_CONFTEST
+       fi
+       $3])
+ac_objext=$boost_save_ac_objext
+ac_ext=$boost_save_ac_ext
+dnl Delete also the IPA/IPO (Inter Procedural Analysis/Optimization)
+dnl information created by the PGI compiler (conftest_ipa8_conftest.oo),
+dnl as it would interfere with the next link command.
+rm -f core conftest.err conftest_ipa8_conftest.oo \
+      conftest$ac_exeext m4_ifval([$1], [conftest.$ac_ext])[]dnl
+])# _BOOST_AC_LINK_IFELSE
+
+# Local Variables:
+# mode: autoconf
+# End:

Added: trunk/m4/cxx.m4
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ trunk/m4/cxx.m4	Fri Mar 22 10:39:56 2013	(r579)
@@ -0,0 +1,43 @@
+## Produce more comprehensible error messages if possible. 
+## Must be called BEFORE AC_LANG(C++) or it will have no effect.
+## See: http://www.bdsoft.com/tools/stlfilt.html
+#AC_CEDAR_CXXFILTER()
+#----------------------------------------
+AC_DEFUN([AC_CEDAR_CXXFILTER], [
+  if test "x$CXX" = "x"; then 
+    AC_PATH_PROG(GFILT, gfilt, $CXX, $PATH:$HOME/bin:$HOME/local/bin)
+    if test "x$GFILT" != "x"; then CXX="$GFILT -banner:N"; fi
+  fi
+])
+
+
+## Try to find an "output colorizing" variant on the compiler.
+## Haven't decided yet how this should interact with the normal
+## AC_PROG_CXX etc.
+#AC_CEDAR_CXXCOLOR()
+#----------------------------------------
+AC_DEFUN([AC_CEDAR_CXXCOLOR], [
+  AC_PATH_PROG(COLORCXX, $CXX-color, $CXX, $PATH:$HOME/bin:$HOME/local/bin)
+  CXX=$COLORCXX
+])
+
+
+## Determine whether a compiler flag is accepted
+#AC_CEDAR_CHECKCXXFLAG(flag, action-if-true, action-if-false)
+AC_DEFUN([AC_CEDAR_CHECKCXXFLAG], [
+  AC_LANG_PUSH(C++)
+  AC_MSG_CHECKING([if the $CXX compiler accepts the $1 flag])
+  AC_LANG_CONFTEST([AC_LANG_PROGRAM([],[return 0;])])
+  flag_ok=no
+  #$CXX $1 conftest.cpp >&5 2>/dev/null && flag_ok=yes
+  stat_string=`$CXX $1 conftest.cpp 2>&1 1>&5` ; test -z "$stat_string" && flag_ok=yes
+  AC_MSG_RESULT([$flag_ok])
+  if test x$flag_ok = xyes; then 
+    true
+    $2
+  else
+    true
+    $3
+  fi
+  AC_LANG_POP(C++)
+])

Added: trunk/m4/cython.m4
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ trunk/m4/cython.m4	Fri Mar 22 10:39:56 2013	(r579)
@@ -0,0 +1,81 @@
+dnl Taken from the python bindings to the Enlightenment foundation libraries, 
+dnl and was part of a GPL package. I have included this file to fix the build.
+dnl
+dnl
+dnl AM_CHECK_CYTHON([VERSION [,ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]]])
+dnl Check if a Cython version is installed
+dnl Defines CYTHON_VERSION and CYTHON_FOUND
+AC_DEFUN([AM_CHECK_CYTHON],
+[
+AC_REQUIRE([AM_PATH_PYTHON])
+ifelse([$1], [], [_msg=""], [_msg=" >= $1"])
+AC_MSG_CHECKING(for Cython$_msg)
+AC_CACHE_VAL(py_cv_cython, [
+
+prog="import Cython.Compiler.Version; print Cython.Compiler.Version.version"
+CYTHON_VERSION=`$PYTHON -c "$prog" 2>&AC_FD_CC`
+
+py_cv_cython=no
+if test "x$CYTHON_VERSION" != "x"; then
+   py_cv_cython=yes
+fi
+
+if test "x$py_cv_cython" = "xyes"; then
+   ifelse([$1], [], [:],
+      [AS_VERSION_COMPARE([$CYTHON_VERSION], [$1], [py_cv_cython=no])])
+fi
+])
+
+AC_MSG_RESULT([$py_cv_cython])
+
+if test "x$py_cv_cython" = "xyes"; then
+   CYTHON_FOUND=yes
+   ifelse([$2], [], [:], [$2])
+else
+   CYTHON_FOUND=no
+   ifelse([$3], [], [AC_MSG_ERROR([Could not find usable Cython$_msg])], [$3])
+fi
+])
+
+dnl AM_CHECK_CYTHON_PRECOMPILED(FILE-LIST [, ACTION-IF-ALL [, ACTION-IF-NOT-ALL]])
+dnl given a list of files ending in .pyx (FILE-LIST), check if their .c
+dnl counterpart exists and is not older than the source.
+dnl    ACTION-IF-ALL is called only if no files failed the check and thus
+dnl       all pre-generated files are usable.
+dnl    ACTION-IF-NOT-ALL is called if some or all failed. If not provided,
+dnl       an error will be issued.
+AC_DEFUN([AM_CHECK_CYTHON_PRECOMPILED],
+[
+_to_check_list="$1"
+_failed_list=""
+_exists_list=""
+
+for inf in $_to_check_list; do
+    outf=`echo "$inf" | sed -e 's/^\(.*\)[.]pyx$/\1.c/'`
+    if test "$outf" = "$inf"; then
+       AC_MSG_WARN([File to check must end in .pyx, but got: $inf -- Skip])
+       continue
+    fi
+
+    AC_MSG_CHECKING([for pre-generated $outf for $inf])
+    if ! test -f "$outf"; then
+       _res=no
+       _failed_list="${_failed_list} $outf"
+    elif ! test "$outf" -nt "$inf"; then
+       _res="no (older)"
+       _failed_list="${_failed_list} $outf"
+    else
+       _res=yes
+       _exists_list="${_exists_list} $outf"
+    fi
+    AC_MSG_RESULT($_res)
+done
+
+if test -z "$_failed_list" -a -n "$_exists_list"; then
+   ifelse([$2], [], [:], [$2])
+else
+   ifelse([$3], [],
+   [AC_MSG_ERROR([Missing pre-generated files: $_failed_list])],
+   [$3])
+fi
+])

Added: trunk/m4/osx.m4
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ trunk/m4/osx.m4	Fri Mar 22 10:39:56 2013	(r579)
@@ -0,0 +1,17 @@
+#AC_CEDAR_OSX()
+#----------------------------------------
+AC_DEFUN([AC_CEDAR_OSX], [
+  LIBPATHVARNAME="LD_LIBRARY_PATH"
+  AC_CHECK_TOOL(SWVERS, sw_vers)
+  if test x$SWVERS != x; then
+    PROD_NAME=$($SWVERS -productName | cut -f 2 -d:)
+  fi
+  AM_CONDITIONAL(WITH_OSX, [test "$PROD_NAME" = "Mac OS X"])
+  if test "$PROD_NAME" = "Mac OS X"; then
+    MACOSX_DEPLOYMENT_TARGET=$($SWVERS -productVersion | cut -f 1,2 -d.)
+    AC_MSG_NOTICE([MACOSX_DEPLOYMENT_TARGET = $MACOSX_DEPLOYMENT_TARGET])
+    AM_CXXFLAGS="$AM_CXXFLAGS -Dunix"
+    LIBPATHVARNAME="DYLD_LIBRARY_PATH"
+  fi
+  AC_SUBST(LIBPATHVARNAME)
+])

Added: trunk/m4/pkgchecks.m4
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ trunk/m4/pkgchecks.m4	Fri Mar 22 10:39:56 2013	(r579)
@@ -0,0 +1,426 @@
+# Convert argument to an absolute path
+AC_DEFUN([AC_CEDAR_ABSPATH], [
+  inpath=${$1}
+  abspath=""
+  if test -d "$inpath"; then
+    abspath=`cd $inpath && pwd`
+  elif test -f "$inpath"; then
+    dirpart=`dirname $inpath`
+    localpart=`basename $inpath`
+    abspath="`cd $dirpart && pwd`/$localpart"
+  fi
+  if test -z "$abspath"; then
+    AC_MSG_ERROR(Could not make absolute path $1 from ${$1})
+  fi
+  $1=$abspath
+])
+
+
+# A version of AC_SUBST which ensures that paths are absolute
+AC_DEFUN([AC_CEDAR_PATH_SUBST], [
+  AC_CEDAR_ABSPATH($1)
+  AC_SUBST($1)
+])
+
+
+# Declares an external package to be used. This macro will declare appropriate 
+# command line switches for ./configure and corresponding environment variables
+# to define the package's prefix path, library path and include path. The
+# configure command line option switches override the corresponding environment
+# variables. Various permutations of capitalisation, version number appendage
+# and include/lib path will be attempted. Omit the version number if it isn't
+# relevant. The third and fourth options will be executed respectively if the
+# package is or isn't found: this is an ideal place to place ERROR/WARNING
+# messages as appropriate for mandatory/optional packages and to run tests of
+# the library if it appears to be there.
+#
+#AC_CEDAR_LIBRARYANDHEADERS(PrettyName, ReleaseNumber, action-if-true, action-if-false)
+#----------------------------------------
+AC_DEFUN([AC_CEDAR_LIBRARYANDHEADERS], [
+  ## Define a bunch of case permutations
+  m4_define([cedar_PkgName], [$1])dnl
+  m4_define([cedar_PKGNAME], [translit([translit([$1], [a-z], [A-Z])], [.])])dnl
+  m4_define([cedar_pkgname], [translit([translit([$1], [A-Z], [a-z])], [.])])dnl
+  m4_define([cedar_SAFEPKGNAME], [translit(cedar_PKGNAME, [-], [_])])dnl
+  m4_define([cedar_safepkgname], [translit(cedar_pkgname, [-], [_])])dnl
+  m4_define([cedar_pkgversion], [$2])dnl
+
+  pkgpath=""
+  pkglib=no; pkginc=no; pkggood=no
+
+  ## Don't know why this isn't working by default:
+  test x${prefix} = xNONE && prefix=${ac_default_prefix}
+
+  ## Environment variables for specifying paths
+  AC_ARG_VAR(@&t at cedar_SAFEPKGNAME@&t at PATH,
+    path to cedar_PkgName @<:@$prefix and various standard locations@:>@)
+  pkgpath=${cedar_SAFEPKGNAME@&t at PATH}
+
+  ## "configure" option switches for specifying paths
+  AC_ARG_WITH([cedar_safepkgname],
+              [AC_HELP_STRING(--with-@&t at cedar_safepkgname, 
+                path to cedar_PkgName @<:@$prefix and various standard locations@:>@)],
+              [pkgpath=$with_@&t at cedar_safepkgname], [])
+  dnl echo "DEBUG: withval=$withval, with_@&t at cedar_safepkgname=$with_@&t at cedar_safepkgname -> pkgpath=$pkgpath"
+  if test "$pkgpath"; then cedar_SAFEPKGNAME@&t at PATH="$pkgpath"; fi
+
+  ## Has this lib been disabled?
+  #echo "DEBUG: pkgpath = $pkgpath"
+  if test x$pkgpath = xno; then 
+    AC_MSG_NOTICE(Not building against cedar_PkgName)
+    AM_CONDITIONAL(WITH_@&t at cedar_SAFEPKGNAME@&t at INC, false)
+    AM_CONDITIONAL(WITH_@&t at cedar_SAFEPKGNAME@&t at LIB, false)
+    AM_CONDITIONAL(WITHOUT_@&t at cedar_SAFEPKGNAME@&t at INC, true)
+    AM_CONDITIONAL(WITHOUT_@&t at cedar_SAFEPKGNAME@&t at LIB, true)
+    $4
+  else
+    ## Check library and header
+    AC_CEDAR_LIBRARY(cedar_PkgName, cedar_pkgversion, , pkglib=no)
+    AC_CEDAR_HEADERS(cedar_PkgName, cedar_pkgversion, , pkginc=no)
+
+    ## Execute pass/fail shell code
+    if test "x$pkglib" = "xyes" && test "x$pkginc" = "xyes"; then
+      #AC_MSG_NOTICE([cedar_PkgName paths verified])
+      pkggood="yes"
+      $3
+    else 
+      pkggood="no"
+      $4
+    fi
+  fi
+
+  ## Export variables to automake
+  have_@&t at cedar_safepkgname=no
+  test x$pkggood != xno && have_@&t at cedar_safepkgname=yes
+  AM_CONDITIONAL(WITH_@&t at cedar_SAFEPKGNAME, [test x$pkggood != xno])
+  AM_CONDITIONAL(WITHOUT_@&t at cedar_SAFEPKGNAME, [test x$pkggood = xno])
+])
+
+
+#AC_CEDAR_HEADERS(PrettyName, ReleaseNumber, action-if-true, action-if-false)
+AC_DEFUN([AC_CEDAR_HEADERS], [
+  ## Define a bunch of case permutations
+  m4_define([cedar_PkgName], [$1])dnl
+  m4_define([cedar_PKGNAME], [translit([translit([$1], [a-z], [A-Z])], [.])])dnl
+  m4_define([cedar_pkgname], [translit([translit([$1], [A-Z], [a-z])], [.])])dnl
+  m4_define([cedar_SAFEPKGNAME], [translit(cedar_PKGNAME, [-], [_])])dnl
+  m4_define([cedar_safepkgname], [translit(cedar_pkgname, [-], [_])])dnl
+  m4_define([cedar_IncName], [cedar_PkgName])dnl
+  m4_define([cedar_INCNAME], [cedar_PKGNAME])dnl
+  m4_define([cedar_incname], [cedar_pkgname])dnl
+  m4_define([cedar_IncName1], [translit(cedar_PkgName, [-], [_])])dnl
+  m4_define([cedar_INCNAME1], [translit(cedar_PKGNAME, [-], [_])])dnl
+  m4_define([cedar_incname1], [translit(cedar_pkgname, [-], [_])])dnl
+  m4_define([cedar_IncName2], [translit(cedar_PkgName, [-], [])])dnl
+  m4_define([cedar_INCNAME2], [translit(cedar_PKGNAME, [-], [])])dnl
+  m4_define([cedar_incname2], [translit(cedar_pkgname, [-], [])])dnl
+  m4_define([cedar_pkgversion], [$2])dnl
+
+  ## We have a set of user-set variables:
+  pkgpath=""; pkgincpath=""
+  ## Also need some status variables:
+  pkginc=no
+
+  ## Don't know why this isn't working by default:
+  test x${prefix} = xNONE && prefix=${ac_default_prefix}
+
+  ## Environment variables for specifying paths
+  AC_ARG_VAR(@&t at cedar_SAFEPKGNAME@&t at PATH,
+    path to cedar_PkgName @<:@$prefix and various standard locations@:>@)
+  AC_ARG_VAR(@&t at cedar_SAFEPKGNAME@&t at INCPATH,
+    path to the directory containing the cedar_PkgName header files @<:@cedar_SAFEPKGNAME@&t at PATH/include@:>@)
+
+  ## "configure" option switches for specifying paths
+  pkgpath=${cedar_SAFEPKGNAME@&t at PATH}
+  AC_ARG_WITH(cedar_safepkgname,
+              AC_HELP_STRING(--with-@&t at cedar_safepkgname@&t@, 
+                path to cedar_PkgName @<:@$prefix and various standard locations@:>@),
+              [pkgpath=$with_@&t at cedar_safepkgname], [])
+  dnl echo "DEBUG: withval=$withval, with_@&t at cedar_safepkgname=$with_@&t at cedar_safepkgname -> pkgpath=$pkgpath"
+  if test "$pkgpath"; then cedar_SAFEPKGNAME@&t at PATH="$pkgpath"; fi
+
+  pkgincpath=${cedar_SAFEPKGNAME@&t at INCPATH}
+  AC_ARG_WITH(cedar_safepkgname@&t at -incpath,
+              AC_HELP_STRING(--with-@&t at cedar_safepkgname@&t at -incpath, 
+                path to directory containing cedar_PkgName headers @<:@cedar_SAFEPKGNAME@&t at PATH/include@:>@),
+              [pkgincpath=$with_@&t at cedar_safepkgname@&t at _incpath], [])
+
+  ## Has this header been disabled?
+  if test x$pkgpath = xno; then 
+    AC_MSG_NOTICE(Not building against cedar_PkgName)
+    $4
+  else
+    ## Base paths
+    pkgbases="$prefix $ac_default_prefix /usr /"
+    if test "$pkgpath"; then pkgbases="$pkgpath"; fi
+
+    ## Look for include files: first build the search list...
+    incpaths=""
+    if test "$pkgincpath"; then 
+      incpath=`echo $pkgincpath | sed -e 's://*:/:g' -e 's:/$::'`
+      incpaths="$incpath"
+    else
+      for base in $pkgbases; do
+        incpath=`echo "$base/include" | sed -e 's://*:/:g' -e 's:/$::'`
+        incpaths="$incpaths $incpath"
+      done
+    fi
+    
+    if test "x$CEDAR_M4_DEBUG" != "x"; then
+      echo "DEBUG: inc paths = $incpaths"
+    fi
+
+
+    ## Build package names
+    incnames="cedar_IncName cedar_INCNAME cedar_incname"
+    if test "cedar_IncName" != "cedar_IncName1"; then
+      incnames="$incnames cedar_IncName1 cedar_INCNAME1 cedar_incname1"
+    fi
+    if test "cedar_IncName" != "cedar_IncName2"; then
+      incnames="$incnames cedar_IncName2 cedar_INCNAME2 cedar_incname2"
+    fi
+
+    ## .. and then do the search:
+    for incpath in $incpaths; do
+      for incname in $incnames; do
+        fullincpath="$incpath/$incname"
+        if test "x$CEDAR_M4_DEBUG" != "x"; then
+          echo "Testing cedar_PkgName inc path: $fullincpath"
+        fi
+        if test -d $fullincpath; then
+          pkginc=yes
+          break
+        else 
+          pkginc=no;
+        fi
+        if test x$pkginc != xno; then break; fi
+      done
+      if test x$pkginc != xno; then break; fi
+    done
+
+    if test x$pkginc != xno; then
+      cedar_SAFEPKGNAME@&t at INCPATH="$incpath"
+      AC_CEDAR_ABSPATH(cedar_SAFEPKGNAME@&t at INCPATH)
+      cedar_SAFEPKGNAME@&t at INCNAME="$incname"
+      cedar_SAFEPKGNAME@&t at CPPFLAGS="-I$cedar_SAFEPKGNAME@&t at INCPATH"
+      #echo cedar_SAFEPKGNAME@&t at INCPATH : $cedar_SAFEPKGNAME@&t at INCPATH
+      AC_MSG_NOTICE([Found cedar_PkgName header directory at $incpath])
+    else
+      ## Last resort --- only tried if $pkgpath was specified
+      if test x$pkgpath != x; then
+        incpath="$pkgpath/include"
+        if test -d "$incpath"; then
+          cedar_SAFEPKGNAME@&t at INCPATH=`echo $incpath | sed -e s:'/$':'':`
+          AC_CEDAR_ABSPATH(cedar_SAFEPKGNAME@&t at INCPATH)
+          cedar_SAFEPKGNAME@&t at INCNAME=""
+          cedar_SAFEPKGNAME@&t at CPPFLAGS="-I$cedar_SAFEPKGNAME@&t at INCPATH"
+          pkginc=yes
+          #AC_MSG_NOTICE([Found cedar_PkgName header directory at $incpath])
+        fi
+      else
+        AC_MSG_WARN(cedar_PkgName header directory was not found)
+      fi
+    fi
+
+    ## Execute pass/fail shell code
+    if test "x$pkginc" = "xyes"; then
+      true
+      $3
+    else 
+      true
+      $4
+    fi
+  fi
+
+  ## Export variables to automake
+  AC_SUBST(cedar_SAFEPKGNAME@&t at INCPATH)
+  AC_SUBST(cedar_SAFEPKGNAME@&t at INCNAME)
+  AC_SUBST(cedar_SAFEPKGNAME@&t at CPPFLAGS)
+  AM_CONDITIONAL(WITH_@&t at cedar_SAFEPKGNAME@&t at INC, [test x$pkgginc != xno])
+  AM_CONDITIONAL(WITHOUT_@&t at cedar_SAFEPKGNAME@&t at INC, [test x$pkgginc = xno])
+])
+
+
+#AC_CEDAR_LIBRARY(PrettyName, ReleaseNumber, action-if-true, action-if-false)
+AC_DEFUN([AC_CEDAR_LIBRARY], [
+  ## Define a bunch of case permutations
+  m4_define([cedar_PkgName], [$1])dnl
+  m4_define([cedar_PKGNAME], [translit([translit([$1], [a-z], [A-Z])], [.])])dnl
+  m4_define([cedar_pkgname], [translit([translit([$1], [A-Z], [a-z])], [.])])dnl
+  m4_define([cedar_SAFEPKGNAME], [translit(cedar_PKGNAME, [-], [_])])dnl
+  m4_define([cedar_safepkgname], [translit(cedar_pkgname, [-], [_])])dnl
+  m4_define([cedar_LibName], [cedar_PkgName])dnl
+  m4_define([cedar_LIBNAME], [cedar_PKGNAME])dnl
+  m4_define([cedar_libname], [cedar_pkgname])dnl
+  m4_define([cedar_LibName1], [translit(cedar_PkgName, [-], [_])])dnl
+  m4_define([cedar_LIBNAME1], [translit(cedar_PKGNAME, [-], [_])])dnl
+  m4_define([cedar_libname1], [translit(cedar_pkgname, [-], [_])])dnl
+  m4_define([cedar_LibName2], [translit(cedar_PkgName, [-], [])])dnl
+  m4_define([cedar_LIBNAME2], [translit(cedar_PKGNAME, [-], [])])dnl
+  m4_define([cedar_libname2], [translit(cedar_pkgname, [-], [])])dnl
+  m4_define([cedar_libversion], [$2])dnl
+
+  ## We have a set of user-set variables:
+  pkgpath=""; pkglibpath=""; pkglibname=""
+  ## Also need some status variables:
+  pkglib=no
+
+  ## Don't know why this isn't working by default:
+  test x${prefix} = xNONE && prefix=${ac_default_prefix}
+
+  ## Environment variables for specifying paths
+  AC_ARG_VAR(@&t at cedar_SAFEPKGNAME@&t at PATH,
+    path to cedar_PkgName @<:@$prefix and various standard locations@:>@)
+  AC_ARG_VAR(@&t at cedar_SAFEPKGNAME@&t at LIBPATH,
+    path to the directory containing the cedar_PkgName library @<:@cedar_SAFEPKGNAME@&t at PATH/lib or cedar_SAFEPKGNAME@&t at PATH/lib/cedar_PkgName@:>@)
+  AC_ARG_VAR(@&t at cedar_SAFEPKGNAME@&t at LIBNAME,
+    name to be used when linking the cedar_PkgName library @<:@cedar_PkgName@:>@)
+  pkgpath=${cedar_SAFEPKGNAME@&t at PATH}
+
+  ## "configure" option switches for specifying paths
+  AC_ARG_WITH([cedar_safepkgname],
+              [AC_HELP_STRING(--with-@&t at cedar_safepkgname, 
+                path to cedar_PkgName @<:@$prefix and various standard locations@:>@)],
+              [pkgpath=$with_@&t at cedar_safepkgname], [])
+
+  dnl echo "DEBUG: withval=$withval, with_@&t at cedar_safepkgname=$with_@&t at cedar_safepkgname -> pkgpath=$pkgpath"
+  if test "$pkgpath"; then cedar_SAFEPKGNAME@&t at PATH="$pkgpath"; fi
+  pkglibpath=${cedar_SAFEPKGNAME@&t at LIBPATH}
+  pkglibname=${cedar_SAFEPKGNAME@&t at LIBFLAG}
+
+  AC_ARG_WITH(cedar_safepkgname@&t at -libpath,
+              AC_HELP_STRING(--with-@&t at cedar_safepkgname@&t at -libpath, 
+                path to directory containing cedar_PkgName library @<:@cedar_SAFEPKGNAME@&t at PATH/lib or cedar_SAFEPKGNAME@&t at PATH/lib/cedar_PkgName@:>@),
+              [pkglibpath=$with_@&t at cedar_safepkgname@&t at _libpath], [])
+  AC_ARG_WITH(cedar_safepkgname@&t at -libname,
+              AC_HELP_STRING(--with-@&t at cedar_safepkgname@&t at -libname,
+                name to be used when linking the cedar_PkgName library @<:@cedar_PkgName@:>@),
+              [pkglibname=$with_@&t at cedar_safepkgname@&t at _libname], [])
+
+  ## Has this lib been disabled?
+  if test x$pkgpath = xno; then 
+    AC_MSG_NOTICE(Not building against cedar_PkgName)
+    $4
+  else
+    ## Base paths
+    pkgbases="$prefix $ac_default_prefix /usr /"
+    if test "$pkgpath"; then pkgbases="$pkgpath"; fi
+    if test "x$CEDAR_M4_DEBUG" != "x"; then
+      echo "DEBUG: $pkgpath -> $pkgbases"
+    fi
+
+    ## Build a list of library search locations, unless specified
+    libdirnames="lib"
+
+    ## Test for 64-bit mode and add lib64 as first choice 
+    ## library dir name if appropriate
+    if test -z "$UNAME"; then 
+      AC_PATH_PROG(UNAME, [uname], [no])
+    fi
+    if test x$UNAME != xno; then
+      if test -n `$UNAME -m | grep 64`; then
+        libdirnames="lib64 $libdirnames"
+      fi
+    fi
+
+    libpaths=""
+    if test "$pkglibpath"; then 
+      libpath=`echo $pkglibpath | sed -e 's://*:/:g' -e 's:/$::'`
+      libpaths="$libpath"
+    else
+      ## Outer loop over lib / lib64 part
+      for libdirname in $libdirnames; do 
+        ## Inner loop over base path
+        for base in $pkgbases; do
+          libpath=`echo "$base/$libdirname" | sed -e 's://*:/:g' -e 's:/$::'`
+          libpaths="$libpaths $libpath"
+        done
+      done
+      libpaths="$libpaths ./src"
+    fi
+
+    ## Use case permuatations on the package name (mixed, all-upper and 
+    ## all-lower), plus punctuation replacements.
+    libnames="cedar_LibName cedar_LIBNAME cedar_libname"
+    if test "cedar_LibName" != "cedar_LibName1"; then
+      libnames="$libnames cedar_LibName1 cedar_LIBNAME1 cedar_libname1"
+    fi
+    if test "cedar_LibName" != "cedar_LibName2"; then
+      libnames="$libnames cedar_LibName2 cedar_LIBNAME2 cedar_libname2"
+    fi
+    if test "$pkglibname"; then libnames=$pkglibname; fi
+
+    ## Define library versions
+    libversions=""
+    if test x"cedar_libversion" != x; then
+      libversions="-cedar_libversion cedar_libversion"
+    fi
+
+    ## Look for library with various name permutations  
+    for libpath in $libpaths; do
+      for libversion in $libversions ""; do
+        for libname in $libnames; do
+          for libextn in la so dylib dll a; do
+            testpath="${libpath}/lib${libname}${libversion}.${libextn}"
+            testpath=`echo $testpath | sed -e 's://*:/:g' -e 's:/$::'`
+            if test "x$CEDAR_M4_DEBUG" != "x"; then
+              echo "DEBUG: Testing $testpath"
+            fi
+            if test -e $testpath; then 
+              pkglib=yes
+              break
+            else
+              pkglib=no
+            fi
+          done
+          if test x$pkglib != xno; then break; fi
+        done
+        if test x$pkglib != xno; then break; fi
+      done
+      if test x$pkglib != xno; then break; fi
+    done
+
+    ## Announce success/failure and set variables
+    if test x$pkglib != xno; then
+      ## TODO: Can we just use $testpath here?
+      libfullpath=`echo ${libpath}/lib${libname}${libversion}.${libextn}`
+      libfullpath=`echo $libfullpath | sed -e 's://*:/:g' -e 's:/$::'`
+      AC_CEDAR_ABSPATH(libfullpath)
+      cedar_SAFEPKGNAME@&t at LIB="$libfullpath"
+      cedar_SAFEPKGNAME@&t at LIBPATH=`dirname $libfullpath`
+      ## TODO: Can we just use $libname here?
+      cedar_SAFEPKGNAME@&t at LIBNAME=`basename $libfullpath | sed -e s/'^lib'// -e s/'\.@<:@a-zA-Z@:>@*$'//`
+      cedar_SAFEPKGNAME@&t at LDFLAGS="-L$cedar_SAFEPKGNAME@&t at LIBPATH"
+      cedar_SAFEPKGNAME@&t at LDLIBS="-l$cedar_SAFEPKGNAME@&t at LIBNAME"
+      AC_MSG_NOTICE([Found cedar_PkgName library at ${libfullpath}])
+    else
+      AC_MSG_WARN(cedar_PkgName library was not found)
+    fi
+
+    ## Execute pass/fail shell code
+    if test "x$pkglib" = "xyes"; then
+      true
+      $3
+    else 
+      true
+      $4
+    fi
+  fi
+
+  ## Export variables to automake
+  AC_SUBST(cedar_SAFEPKGNAME@&t at LIB)
+  AC_SUBST(cedar_SAFEPKGNAME@&t at LIBPATH)
+  AC_SUBST(cedar_SAFEPKGNAME@&t at LIBNAME)
+  AC_SUBST(cedar_SAFEPKGNAME@&t at LDFLAGS)
+  AC_SUBST(cedar_SAFEPKGNAME@&t at LDLIBS)
+  AM_CONDITIONAL(WITH_@&t at cedar_SAFEPKGNAME@&t at LIB, [test x$pkglib != xno])
+  AM_CONDITIONAL(WITHOUT_@&t at cedar_SAFEPKGNAME@&t at LIB, [test x$pkglib = xno])
+])
+
+
+# Create a variable called EMPTY with appropriate content
+#AC_EMPTY_SUBST
+AC_DEFUN([AC_EMPTY_SUBST],
+[EMPTY=""
+AC_SUBST(EMPTY)
+])

Added: trunk/m4/python.m4
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ trunk/m4/python.m4	Fri Mar 22 10:39:56 2013	(r579)
@@ -0,0 +1,782 @@
+# ===========================================================================
+#               http://autoconf-archive.cryp.to/az_python.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AZ_PYTHON_DEFAULT
+#   AZ_PYTHON_ENABLE
+#   AZ_PYTHON_WITH
+#   AZ_PYTHON_PATH
+#   AZ_PYTHON_VERSION_ENSURE( [2.2] )
+#   AZ_PYTHON_CSPEC
+#   AZ_PYTHON_LSPEC
+#
+# DESCRIPTION
+#
+#   This file provides autoconf support for those applications that want to
+#   embed python. It supports all pythons >= 2.2 which is the first official
+#   release containing distutils. Version 2.2 of python was released
+#   December 21, 2001. Since it actually executes the python, cross platform
+#   configuration will probably not work. Also, most of the platforms
+#   supported are consistent until you look into MacOSX. The python included
+#   with it is installed as a framework which is a very different
+#   environment to set up the normal tools such as gcc and libtool to deal
+#   with. Therefore, once we establish which python that we are going to
+#   use, we use its distutils to actually compile and link our modules or
+#   applications.
+#
+#   At this time, it does NOT support linking with Python statically. It
+#   does support dynamic linking.
+#
+#   This set of macros help define $PYTHON, $PYTHON_USE, $PYTHON_CSPEC and
+#   $PYTHON_LSPEC. $PYTHON defines the full executable path for the Python
+#   being linked to and is used within these macros to determine if that has
+#   been specified or found. These macros do execute this python version so
+#   it must be present on the system at configure time.
+#
+#   $PYTHON_USE is an automake variable that defines whether Python support
+#   should be included or not in your application. $PYTHON_CSPEC is a
+#   variable that supplies additional CFLAGS for the compilation of the
+#   application/shared library. $PYTHON_LSPEC is a variable that supplies
+#   additional LDFLAGS for linking the application/shared library.
+#
+#   The following is an example of how to set up for python usage within
+#   your application in your configure.in:
+#
+#     AZ_PYTHON_DEFAULT( )
+#     AZ_PYTHON_ENABLE( )             # Optional
+#     AZ_PYTHON_WITH( )               # Optional
+#     AZ_PYTHON_PATH( )               # or AZ_PYTHON_INSIST( )
+#     # if $PYTHON is not defined, then the following do nothing.
+#     AZ_PYTHON_VERSION_ENSURE( [2.2] )
+#     AZ_PYTHON_CSPEC
+#     AZ_PYTHON_LSPEC
+#
+#   The AZ_PYTHON_DEFAULT sets the $PYTHON_USE to false. Thereby, excluding
+#   it if it was optional.
+#
+#   The AZ_PYTHON_ENABLE looks for the optional configure parameters of
+#   --enable-python/--disable-python and establishes the $PYTHON and
+#   $PYTHON_USE variables accordingly.
+#
+#   The AZ_PYTHON_WITH looks for the optional configure parameters of
+#   --with-python/--without-python and establishes the $PYTHON and
+#   $PYTHON_USE variables accordingly.
+#
+#   The AZ_PYTHON_PATH looks for python assuming that none has been
+#   previously found or defined and issues an error if it does not find it.
+#   If it does find it, it establishes the $PYTHON and $PYTHON_USE variables
+#   accordingly. AZ_PYTHON_INSIST could be used here instead if you want to
+#   insist that Python support be included using the --enable-python or
+#   --with-python checks previously done.
+#
+#   The AZ_PYTHON_VERSION_ENSURE issues an error if the Python previously
+#   found is not of version 2.2 or greater.
+#
+#   Once that these macros have be run, we can use PYTHON_USE within the
+#   makefile.am file to conditionally add the Python support such as:
+#
+#   Makefile.am example showing optional inclusion of directories:
+#
+#    if PYTHON_USE
+#    plugins = plugins
+#    src = src
+#    else
+#    plugins =
+#    src =
+#    endif
+#
+#    SUBDIRS = . $(plugins) $(src)
+#
+#   Makefile.am example showing optional shared library build:
+#
+#    if PYTHON_USE
+#    lib_LTLIBRARIES        = libElemList.la
+#    libElemList_la_SOURCES = libElemList.c
+#    libElemList_la_CFLAGS  = @PYTHON_CSPEC@
+#    libElemList_la_LDFLAGS = @PYTHON_LSPEC@
+#    endif
+#
+#   Makefile.am example showing optional program build:
+#
+#    if PYTHON_USE
+#    bin_PROGRAMS    = runFunc
+#    runFunc_SOURCES = runFunc.c
+#    runFunc_CFLAGS  = @PYTHON_CSPEC@
+#    runFunc_LDFLAGS = @PYTHON_LSPEC@
+#    endif
+#
+#   The above compiles the modules only if PYTHON_USE was specified as true.
+#   Also, the else portion of the if was optional.
+#
+# LAST MODIFICATION
+#
+#   2008-04-12
+#
+# COPYLEFT
+#
+#   Copyright (c) 2008 Robert White <kranki at mac.com>
+#   Copyright (c) 2008 Dustin J. Mitchell <dustin at cs.uchicago.edu>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.
+
+# AZ_PYTHON_DEFAULT( )
+# -----------------
+# Sets the default to not include Python support.
+
+AC_DEFUN([AZ_PYTHON_DEFAULT],
+[
+    az_python_use=false
+    AM_CONDITIONAL(PYTHON_USE, test x"$az_python_use" = x"true")
+])
+
+
+
+# AZ_PYTHON_ENABLE( [path] )
+# -----------------------------------------------------------------
+# Handles the various --enable-python commands.
+# Input:
+#   $1 is the optional search path for the python executable if needed
+# Ouput:
+#   PYTHON_USE (AM_CONDITIONAL) is true if python executable found
+#   and --enable-python was requested; otherwise false.
+#   $PYTHON contains the full executable path to python if PYTHON_ENABLE_USE
+#   is true.
+#
+# Example:
+#   AZ_PYTHON_ENABLE( )
+#   or
+#   AZ_PYTHON_ENABLE( "/usr/bin" )
+
+AC_DEFUN([AZ_PYTHON_ENABLE],
+[
+    AC_ARG_VAR([PYTHON],[Python Executable Path])
+
+    # unless PYTHON was supplied to us (as a precious variable),
+    # see if --enable-python[=PythonExecutablePath], --enable-python,
+    # --disable-python or --enable-python=no was given.
+    if test -z "$PYTHON"
+    then
+        AC_MSG_CHECKING(for --enable-python)
+        AC_ARG_ENABLE(
+            python,
+            AC_HELP_STRING([--enable-python@<:@=PYTHON@:>@],
+                [absolute path name of Python executable]
+            ),
+            [
+                if test "$enableval" = "yes"
+                then
+                    # "yes" was specified, but we don't have a path
+                    # for the executable.
+                    # So, let's searth the PATH Environment Variable.
+                    AC_MSG_RESULT(yes)
+                    AC_PATH_PROG(
+                        [PYTHON],
+                        python,
+                        [],
+                        $1
+                    )
+                    if test -z "$PYTHON"
+                    then
+                        AC_MSG_ERROR(no path to python found)
+                    fi
+                    az_python_use=true
+                    AM_CONDITIONAL(PYTHON_USE, test x"$az_python_use" = x"true")
+                    AZ_PYTHON_PREFIX( )
+                elif test "$enableval" = "no"
+                then
+                    AC_MSG_RESULT(no)
+                    az_python_use=false
+                    AM_CONDITIONAL(PYTHON_USE, test x"$az_python_use" = x"true")
+                else
+                    # $enableval must be the executable path then.
+                    AC_SUBST([PYTHON], ["${enableval}"])
+                    AC_MSG_RESULT($withval)
+                    az_python_use=true
+                    AM_CONDITIONAL(PYTHON_USE, test x"$az_python_use" = x"true")
+                    AZ_PYTHON_PREFIX( )
+                fi
+            ],
+            [
+                # --with-python was not specified.
+                AC_MSG_RESULT(no)
+                az_python_use=false
+                AM_CONDITIONAL(PYTHON_USE, test x"$az_python_use" = x"true")
+            ]
+        )
+    fi
+
+])
+
+
+
+# AZ_PYTHON_CSPEC( )
+# -----------------
+# Set up the c compiler options to compile Python
+# embedded programs/libraries in $PYTHON_CSPEC if
+# $PYTHON has been defined.
+
+AC_DEFUN([AZ_PYTHON_CSPEC],
+[
+    AC_ARG_VAR( [PYTHON], [Python Executable Path] )
+    if test -n "$PYTHON"
+    then
+        az_python_prefix=`${PYTHON} -c "import sys; print sys.prefix"`
+        if test -z "$az_python_prefix"
+        then
+            AC_MSG_ERROR([Python Prefix is not known])
+        fi
+        az_python_execprefix=`${PYTHON} -c "import sys; print sys.exec_prefix"`
+        az_python_version=`$PYTHON -c "import sys; print sys.version[[:3]]"`
+        az_python_includespec="-I${az_python_prefix}/include/python${az_python_version}"
+        if test x"$python_prefix" != x"$python_execprefix"; then
+            az_python_execspec="-I${az_python_execprefix}/include/python${az_python_version}"
+            az_python_includespec="${az_python_includespec} $az_python_execspec"
+        fi
+        az_python_ccshared=`${PYTHON} -c "import distutils.sysconfig; print distutils.sysconfig.get_config_var('CFLAGSFORSHARED')"`
+        az_python_cspec="${az_python_ccshared} ${az_python_includespec}"
+        AC_SUBST([PYTHON_CSPEC], [${az_python_cspec}])
+        AC_MSG_NOTICE([PYTHON_CSPEC=${az_python_cspec}])
+    fi
+])
+
+
+
+# AZ_PYTHON_INSIST( )
+# -----------------
+# Look for Python and set the output variable 'PYTHON'
+# to 'python' if found, empty otherwise.
+
+AC_DEFUN([AZ_PYTHON_PATH],
+[
+    AC_ARG_VAR( [PYTHON], [Python Executable Path] )
+    if test -z "$PYTHON"
+    then
+        AC_MSG_ERROR([Python Executable not found])
+    fi
+])
+
+
+
+# AZ_PYTHON_LSPEC( )
+# -----------------
+# Set up the linker options to link Python embedded
+# programs/libraries in $PYTHON_LSPEC if $PYTHON
+# has been defined.
+
+AC_DEFUN([AZ_PYTHON_LSPEC],
+[
+    AC_ARG_VAR( [PYTHON], [Python Executable Path] )
+    if test -n "$PYTHON"
+    then
+        AZ_PYTHON_RUN([
+import sys
+import distutils.sysconfig
+strUseFrameWork = "--enable-framework"
+dictConfig = distutils.sysconfig.get_config_vars( )
+strConfigArgs = dictConfig.get("CONFIG_ARGS")
+strLinkSpec =  dictConfig.get('LDFLAGS')
+if -1 ==  strConfigArgs.find(strUseFrameWork):
+    strLibPL = dictConfig.get("LIBPL")
+    if strLibPL and (strLibPL != ""):
+        strLinkSpec += " -L%s" % (strLibPL)
+    strSys = dictConfig.get("SYSLIBS")
+    if strSys and (strSys != ""):
+        strLinkSpec += " %s" % (strSys)
+    strSHL = dictConfig.get("SHLIBS")
+    if strSHL and (strSHL != ""):
+        strLinkSpec += " %s" % (strSHL)
+    # Construct the Python Library Name.
+    strTmplte = " -lpython%d.%d"
+    if (sys.platform == "win32") or (sys.platform == "os2emx"):
+        strTmplte = " -lpython%d%d"
+    strWrk = strTmplte % ( (sys.hexversion >> 24),
+                            ((sys.hexversion >> 16) & 0xff))
+    strLinkSpec += strWrk
+else:
+    # This is not ideal since it changes the search path
+    # for Frameworks which could have side-effects on
+    # other included Frameworks.  However, it is necessary
+    # where someone has installed more than one frameworked
+    # Python.  Frameworks are really only used in MacOSX.
+    strLibFW = dictConfig.get("PYTHONFRAMEWORKPREFIX")
+    if strLibFW and (strLibFW != ""):
+        strLinkSpec += " -F%s" % (strLibFW)
+strLinkSpec += " %s" % (dictConfig.get('LINKFORSHARED'))
+print strLinkSpec
+        ])
+        AC_SUBST([PYTHON_LSPEC], [${az_python_output}])
+        AC_MSG_NOTICE([PYTHON_LSPEC=${az_python_output}])
+    fi
+])
+
+
+
+# AZ_PYTHON_PATH( )
+# -----------------
+# Look for Python and set the output variable 'PYTHON'
+# to 'python' if found, empty otherwise.
+
+AC_DEFUN([AZ_PYTHON_PATH],
+[
+    AC_ARG_VAR( [PYTHON], [Python Executable Path] )
+    AC_PATH_PROG( PYTHON, python, [], $1 )
+    if test -z "$PYTHON"
+    then
+        AC_MSG_ERROR([Python Executable not found])
+    else
+        az_python_use=true
+    fi
+    AM_CONDITIONAL(PYTHON_USE, test "$az_python_use" = "true")
+])
+
+
+
+# AZ_PYTHON_PREFIX( )
+# -------------------
+# Use the values of $prefix and $exec_prefix for the corresponding
+# values of PYTHON_PREFIX and PYTHON_EXEC_PREFIX.
+
+AC_DEFUN([AZ_PYTHON_PREFIX],
+[
+    if test -z "$PYTHON"
+    then
+        AC_MSG_ERROR([Python Executable Path is not known])
+    fi
+    ax_python_prefix=`${PYTHON} -c "import sys; print sys.prefix"`
+    ax_python_execprefix=`${PYTHON} -c "import sys; print sys.exec_prefix"`
+    AC_SUBST([PYTHON_PREFIX], ["${ax_python_prefix}"])
+    AC_SUBST([PYTHON_EXECPREFIX], ["${ax_python_execprefix}"])
+])
+
+
+
+# AZ_PYTHON_RUN( PYTHON_PROGRAM )
+# -----------------
+# Run a Python Test Program saving its output
+# in az_python_output and its condition code
+# in az_python_cc.
+
+AC_DEFUN([AZ_PYTHON_RUN],
+[
+    AC_ARG_VAR( [PYTHON], [Python Executable Path] )
+    if test -z "$PYTHON"
+    then
+        AC_MSG_ERROR([Python Executable not found])
+    else
+        cat >conftest.py <<_ACEOF
+$1
+_ACEOF
+        az_python_output=`$PYTHON conftest.py`
+        az_python_cc=$?
+        rm conftest.py
+        if test -f "conftest.pyc"
+        then
+            rm conftest.pyc
+        fi
+    fi
+])
+
+
+
+# AZ_PYTHON_VERSION_CHECK( VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE] )
+# -----------------------------------------------------------------------------
+# Run ACTION-IF-TRUE if the Python interpreter has version >= VERSION.
+# Run ACTION-IF-FALSE otherwise.
+# This test uses sys.hexversion instead of the string equivalant (first
+# word of sys.version), in order to cope with versions such as 2.2c1.
+# hexversion has been introduced in Python 1.5.2; it's probably not
+# worth to support older versions (1.5.1 was released on October 31, 1998).
+
+AC_DEFUN([AZ_PYTHON_VERSION_CHECK],
+ [
+    AC_ARG_VAR( [PYTHON], [Python Executable Path] )
+    if test -n "$PYTHON"
+    then
+        AC_MSG_CHECKING([whether $PYTHON version >= $1])
+        AZ_PYTHON_RUN([
+import sys, string
+# split strings by '.' and convert to numeric.  Append some zeros
+# because we need at least 4 digits for the hex conversion.
+minver = map(int, string.split('$1', '.')) + [[0, 0, 0]]
+minverhex = 0
+for i in xrange(0, 4): minverhex = (minverhex << 8) + minver[[i]]
+if sys.hexversion >= minverhex:
+    sys.exit( 0 )
+else:
+    sys.exit( 1 )
+        ])
+        if test $az_python_cc -eq 0
+        then
+            $2
+        m4_ifvaln(
+            [$3],
+            [else $3]
+        )
+        fi
+    fi
+])
+
+
+
+# AZ_PYTHON_VERSION_ENSURE( VERSION )
+# -----------------
+# Insure that the Python Interpreter Version
+# is greater than or equal to the VERSION
+# parameter.
+
+AC_DEFUN([AZ_PYTHON_VERSION_ENSURE],
+[
+    AZ_PYTHON_VERSION_CHECK(
+        [$1],
+        [AC_MSG_RESULT(yes)],
+        [AC_MSG_ERROR(too old)]
+    )
+])
+
+
+
+# AZ_PYTHON_WITH( [path] )
+# -----------------------------------------------------------------
+# Handles the various --with-python commands.
+# Input:
+#   $1 is the optional search path for the python executable if needed
+# Ouput:
+#   PYTHON_USE (AM_CONDITIONAL) is true if python executable found
+#   and --with-python was requested; otherwise false.
+#   $PYTHON contains the full executable path to python if PYTHON_USE
+#   is true.
+#
+# Example:
+#   AZ_PYTHON_WITH( )
+#   or
+#   AZ_PYTHON_WITH("/usr/bin")
+
+AC_DEFUN([AZ_PYTHON_WITH],
+[
+    AC_ARG_VAR([PYTHON],[Python Executable Path])
+
+    # unless PYTHON was supplied to us (as a precious variable),
+    # see if --with-python[=PythonExecutablePath], --with-python,
+    # --without-python or --with-python=no was given.
+    if test -z "$PYTHON"
+    then
+        AC_MSG_CHECKING(for --with-python)
+        AC_ARG_WITH(
+            python,
+            AC_HELP_STRING([--with-python@<:@=PYTHON@:>@],
+                [absolute path name of Python executable]
+            ),
+            [
+                if test "$withval" = "yes"
+                then
+                    # "yes" was specified, but we don't have a path
+                    # for the executable.
+                    # So, let's searth the PATH Environment Variable.
+                    AC_MSG_RESULT(yes)
+                    AC_PATH_PROG(
+                        [PYTHON],
+                        python,
+                        [],
+                        $1
+                    )
+                    if test -z "$PYTHON"
+                    then
+                        AC_MSG_ERROR(no path to python found)
+                    fi
+                    az_python_use=true
+                    AM_CONDITIONAL(PYTHON_USE, test x"$az_python_use" = x"true")
+                    AZ_PYTHON_PREFIX( )
+                elif test "$withval" = "no"
+                then
+                    AC_MSG_RESULT(no)
+                    az_python_use=false
+                    AM_CONDITIONAL(PYTHON_USE, test x"$az_python_use" = x"true")
+                else
+                    # $withval must be the executable path then.
+                    AC_SUBST([PYTHON], ["${withval}"])
+                    AC_MSG_RESULT($withval)
+                    az_python_use=true
+                    AM_CONDITIONAL(PYTHON_USE, test x"$az_python_use" = x"true")
+                    AZ_PYTHON_PREFIX( )
+                fi
+            ],
+            [
+                # --with-python was not specified.
+                AC_MSG_RESULT(no)
+                az_python_use=false
+                AM_CONDITIONAL(PYTHON_USE, test x"$az_python_use" = x"true")
+            ]
+        )
+    fi
+
+])
+
+# ===========================================================================
+#            http://autoconf-archive.cryp.to/ac_python_devel.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AC_PYTHON_DEVEL([version])
+#
+# DESCRIPTION
+#
+#   Note: Defines as a precious variable "PYTHON_VERSION". Don't override it
+#   in your configure.ac.
+#
+#   This macro checks for Python and tries to get the include path to
+#   'Python.h'. It provides the $(PYTHON_CPPFLAGS) and $(PYTHON_LDFLAGS)
+#   output variables. It also exports $(PYTHON_EXTRA_LIBS) and
+#   $(PYTHON_EXTRA_LDFLAGS) for embedding Python in your code.
+#
+#   You can search for some particular version of Python by passing a
+#   parameter to this macro, for example ">= '2.3.1'", or "== '2.4'". Please
+#   note that you *have* to pass also an operator along with the version to
+#   match, and pay special attention to the single quotes surrounding the
+#   version number. Don't use "PYTHON_VERSION" for this: that environment
+#   variable is declared as precious and thus reserved for the end-user.
+#
+#   This macro should work for all versions of Python >= 2.1.0. As an end
+#   user, you can disable the check for the python version by setting the
+#   PYTHON_NOVERSIONCHECK environment variable to something else than the
+#   empty string.
+#
+#   If you need to use this macro for an older Python version, please
+#   contact the authors. We're always open for feedback.
+#
+# LAST MODIFICATION
+#
+#   2008-04-12
+#
+# COPYLEFT
+#
+#   Copyright (c) 2008 Sebastian Huber <sebastian-huber at web.de>
+#   Copyright (c) 2008 Alan W. Irwin <irwin at beluga.phys.uvic.ca>
+#   Copyright (c) 2008 Rafael Laboissiere <rafael at laboissiere.net>
+#   Copyright (c) 2008 Andrew Collier <colliera at ukzn.ac.za>
+#   Copyright (c) 2008 Matteo Settenvini <matteo at member.fsf.org>
+#   Copyright (c) 2008 Horst Knorr <hk_classes at knoda.org>
+#
+#   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 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([AC_PYTHON_DEVEL],[
+	#
+	# Allow the use of a (user set) custom python version
+	#
+	AC_ARG_VAR([PYTHON_VERSION],[The installed Python
+		version to use, for example '2.3'. This string
+		will be appended to the Python interpreter
+		canonical name.])
+
+	AC_PATH_PROG([PYTHON],[python[$PYTHON_VERSION]])
+	if test -z "$PYTHON"; then
+	   AC_MSG_ERROR([Cannot find python$PYTHON_VERSION in your system path])
+	   PYTHON_VERSION=""
+	fi
+
+	#
+	# Check for a version of Python >= 2.1.0
+	#
+	AC_MSG_CHECKING([for a version of Python >= '2.1.0'])
+	ac_supports_python_ver=`$PYTHON -c "import sys, string; \
+		ver = string.split(sys.version)[[0]]; \
+		print ver >= '2.1.0'"`
+	if test "$ac_supports_python_ver" != "True"; then
+		if test -z "$PYTHON_NOVERSIONCHECK"; then
+			AC_MSG_RESULT([no])
+			AC_MSG_FAILURE([
+This version of the AC@&t at _PYTHON_DEVEL macro
+doesn't work properly with versions of Python before
+2.1.0. You may need to re-run configure, setting the
+variables PYTHON_CPPFLAGS, PYTHON_LDFLAGS, PYTHON_SITE_PKG,
+PYTHON_EXTRA_LIBS and PYTHON_EXTRA_LDFLAGS by hand.
+Moreover, to disable this check, set PYTHON_NOVERSIONCHECK
+to something else than an empty string.
+])
+		else
+			AC_MSG_RESULT([skip at user request])
+		fi
+	else
+		AC_MSG_RESULT([yes])
+	fi
+
+	#
+	# if the macro parameter ``version'' is set, honour it
+	#
+	if test -n "$1"; then
+		AC_MSG_CHECKING([for a version of Python $1])
+		ac_supports_python_ver=`$PYTHON -c "import sys, string; \
+			ver = string.split(sys.version)[[0]]; \
+			print ver $1"`
+		if test "$ac_supports_python_ver" = "True"; then
+	   	   AC_MSG_RESULT([yes])
+		else
+			AC_MSG_RESULT([no])
+			AC_MSG_ERROR([this package requires Python $1.
+If you have it installed, but it isn't the default Python
+interpreter in your system path, please pass the PYTHON_VERSION
+variable to configure. See ``configure --help'' for reference.
+])
+			PYTHON_VERSION=""
+		fi
+	fi
+
+	#
+	# Check if you have distutils, else fail
+	#
+	AC_MSG_CHECKING([for the distutils Python package])
+	ac_distutils_result=`$PYTHON -c "import distutils" 2>&1`
+	if test -z "$ac_distutils_result"; then
+		AC_MSG_RESULT([yes])
+	else
+		AC_MSG_RESULT([no])
+		AC_MSG_ERROR([cannot import Python module "distutils".
+Please check your Python installation. The error was:
+$ac_distutils_result])
+		PYTHON_VERSION=""
+	fi
+
+	#
+	# Check for Python include path
+	#
+	AC_MSG_CHECKING([for Python include path])
+	if test -z "$PYTHON_CPPFLAGS"; then
+		python_path=`$PYTHON -c "import distutils.sysconfig; \
+           		print distutils.sysconfig.get_python_inc();"`
+		if test -n "${python_path}"; then
+		   	python_path="-I$python_path"
+		fi
+		PYTHON_CPPFLAGS=$python_path
+	fi
+	AC_MSG_RESULT([$PYTHON_CPPFLAGS])
+	AC_SUBST([PYTHON_CPPFLAGS])
+
+	#
+	# Check for Python library path
+	#
+	AC_MSG_CHECKING([for Python library path])
+	if test -z "$PYTHON_LDFLAGS"; then
+		# (makes two attempts to ensure we've got a version number
+		# from the interpreter)
+		py_version=`$PYTHON -c "from distutils.sysconfig import *; \
+			from string import join; \
+			print join(get_config_vars('VERSION'))"`
+		if test "$py_version" == "[None]"; then
+			if test -n "$PYTHON_VERSION"; then
+				py_version=$PYTHON_VERSION
+			else
+				py_version=`$PYTHON -c "import sys; \
+					print sys.version[[:3]]"`
+			fi
+		fi
+
+		PYTHON_LDFLAGS=`$PYTHON -c "from distutils.sysconfig import *; \
+			from string import join; \
+			print '-L' + get_python_lib(0,1), \
+		      	'-lpython';"`$py_version
+	fi
+	AC_MSG_RESULT([$PYTHON_LDFLAGS])
+	AC_SUBST([PYTHON_LDFLAGS])
+
+	#
+	# Check for site packages
+	#
+	AC_MSG_CHECKING([for Python site-packages path])
+	if test -z "$PYTHON_SITE_PKG"; then
+		PYTHON_SITE_PKG=`$PYTHON -c "import distutils.sysconfig; \
+		        print distutils.sysconfig.get_python_lib(0,0);"`
+	fi
+	AC_MSG_RESULT([$PYTHON_SITE_PKG])
+	AC_SUBST([PYTHON_SITE_PKG])
+
+	#
+	# libraries which must be linked in when embedding
+	#
+	AC_MSG_CHECKING(python extra libraries)
+	if test -z "$PYTHON_EXTRA_LIBS"; then
+	   PYTHON_EXTRA_LIBS=`$PYTHON -c "import distutils.sysconfig; \
+                conf = distutils.sysconfig.get_config_var; \
+                print conf('LOCALMODLIBS'), conf('LIBS')"`
+	fi
+	AC_MSG_RESULT([$PYTHON_EXTRA_LIBS])
+	AC_SUBST(PYTHON_EXTRA_LIBS)
+
+	#
+	# linking flags needed when embedding
+	#
+	AC_MSG_CHECKING(python extra linking flags)
+	if test -z "$PYTHON_EXTRA_LDFLAGS"; then
+		PYTHON_EXTRA_LDFLAGS=`$PYTHON -c "import distutils.sysconfig; \
+			conf = distutils.sysconfig.get_config_var; \
+			print conf('LINKFORSHARED')"`
+	fi
+	AC_MSG_RESULT([$PYTHON_EXTRA_LDFLAGS])
+	AC_SUBST(PYTHON_EXTRA_LDFLAGS)
+
+	#
+	# final check to see if everything compiles alright
+	#
+	AC_MSG_CHECKING([consistency of all components of python development environment])
+	AC_LANG_PUSH([C])
+	# save current global flags
+	LIBS="$ac_save_LIBS $PYTHON_LDFLAGS"
+	CPPFLAGS="$ac_save_CPPFLAGS $PYTHON_CPPFLAGS"
+	AC_TRY_LINK([
+		#include <Python.h>
+	],[
+		Py_Initialize();
+	],[pythonexists=yes],[pythonexists=no])
+
+	AC_MSG_RESULT([$pythonexists])
+
+        if test ! "$pythonexists" = "yes"; then
+	   AC_MSG_ERROR([
+  Could not link test program to Python. Maybe the main Python library has been
+  installed in some non-standard library path. If so, pass it to configure,
+  via the LDFLAGS environment variable.
+  Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib"
+  ============================================================================
+   ERROR!
+   You probably have to install the development version of the Python package
+   for your distribution.  The exact name of this package varies among them.
+  ============================================================================
+	   ])
+	  PYTHON_VERSION=""
+	fi
+	AC_LANG_POP
+	# turn back to default flags
+	CPPFLAGS="$ac_save_CPPFLAGS"
+	LIBS="$ac_save_LIBS"
+
+	#
+	# all done!
+	#
+])


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