--- Vanilla/oisf/configure.ac   Wed Dec 24 12:05:12 2014
+++ oisf/configure.ac   Wed Dec 24 12:43:32 2014
@@ -92,7 +92,7 @@
         exit 1
     fi

-    AC_PATH_PROG(HAVE_PYTHON_CONFIG, python, "no")
+    AC_PATH_PROGS(HAVE_PYTHON_CONFIG, `basename $PYTHON` python, "no")
     if test "$HAVE_PYTHON_CONFIG" = "no"; then
         echo
         echo "   Warning! python not found, you will not be     "