--- configure.orig	2016-08-09 21:07:54.000000000 +0200
+++ configure	2016-09-19 11:49:18.560986340 +0200
@@ -16520,11 +16520,15 @@
         cat >conftest.py <<_ACEOF
 
 import sys, string
+# Python 2 and 3 compatible
+from future.builtins import map
+# Python 2 and 3: forward-compatible
+from future.builtins import range
 # 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('2.5', '.')) + [0, 0, 0]
+minver = list(map(int, '2.5'.split('.'))) + [0, 0, 0]
 minverhex = 0
-for i in xrange(0, 4): minverhex = (minverhex << 8) + minver[i]
+for i in range(0, 4): minverhex = (minverhex << 8) + minver[i]
 if sys.hexversion >= minverhex:
     sys.exit( 0 )
 else:
@@ -16552,15 +16556,15 @@
     fi
 
 
-  PYTHON_VERSION=`$PYTHON -c "import sys; print '.'.join(map(str, sys.version_info[:2]));"`
+  PYTHON_VERSION=`$PYTHON -c "from __future__ import print_function; import sys; print('.'.join(list(map(str, sys.version_info[:2]))));"`
 
-  YODA_PYTHONPATH=`$PYTHON -c "import distutils.sysconfig; print distutils.sysconfig.get_python_lib(prefix='$prefix', plat_specific=True);"`
+  YODA_PYTHONPATH=`$PYTHON -c "from __future__ import print_function; import distutils.sysconfig; print(distutils.sysconfig.get_python_lib(prefix='$prefix', plat_specific=True));"`
 
   ## Test for Python header
   if test -x "$PYTHON"; then
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for Python include path" >&5
 $as_echo_n "checking for Python include path... " >&6; }
-    python_incpath=`$PYTHON -c "import distutils.sysconfig; print distutils.sysconfig.get_python_inc();"`
+    python_incpath=`$PYTHON -c "from __future__ import print_function; import distutils.sysconfig; print(distutils.sysconfig.get_python_inc());"`
     { $as_echo "$as_me:${as_lineno-$LINENO}: result: $python_incpath" >&5
 $as_echo "$python_incpath" >&6; }
     python_header="$python_incpath/Python.h"
 --- pyext/setup.py.in.orig	2016-09-06 17:25:39.993785138 +0200
 +++ pyext/setup.py.in	2016-09-06 17:26:10.368489432 +0200
 @@ -34,7 +34,7 @@
  extns = [ext("util"),  ext("core", statics=static_files, depends=core_depends)]
  
  ## Enable building of ROOT extension if ROOT is present
 -if os.environ.has_key("BUILD_ROOTCOMPAT"):
 +if "BUILD_ROOTCOMPAT" in os.environ:
      try:
          # import ROOT
          # TODO: Need to test for and use root-config in configure