Index: /issm/trunk-jpl/m4/issm_options.m4
===================================================================
--- /issm/trunk-jpl/m4/issm_options.m4	(revision 13769)
+++ /issm/trunk-jpl/m4/issm_options.m4	(revision 13770)
@@ -236,10 +236,10 @@
 		AC_DEFINE([_HAVE_PYTHON_],[1],[with Python in ISSM src])
 	else
-	 HAVE_PYTHON=no
+		HAVE_PYTHON=no
 	fi
 	AC_MSG_RESULT($HAVE_PYTHON)
 
 	dnl get python version
-	if test "$HAVE_PYTHON" = "yes"; then
+	if test x$HAVE_PYTHON = xyes; then
 		AC_MSG_CHECKING(for python version)
 		dnl Query Python for its version number.  Getting [:3] seems to be
@@ -254,9 +254,11 @@
 			dnl are we running python 3?
 			HAVE_PYTHON3="yes"
+		else
+			HAVE_PYTHON3="no"
 		fi
 		AC_DEFINE_UNQUOTED([_PYTHON_MAJOR_],$PYTHON_MAJOR,[python version major])
 
 		PYTHONINCL=-I$PYTHON_ROOT/include
-		PYTHONLIB="-L$PYTHON_ROOT/lib -lpython$PYTHONVERSION"
+		PYTHONLIB="-L$PYTHON_ROOT/lib -lpython$PYTHON_VERSION"
 		PYTHONEXT=.so