Merge pull request #10 from torbjoernk/feature/set-version

cmake: make set_version more robust against insufficient python versions

Author: memmett

CMakeLists.txt

@@ -155,8 +155,9 @@ message(STATUS "****************************************************************
 message(STATUS "Configuring sources")
 update_site_config()
 
+find_package(PythonInterp REQUIRED)
 add_custom_target(set_version ALL
-    COMMAND ${pfasst_SOURCE_DIR}/tools/get_pfasst_version.py
+    COMMAND ${PYTHON_EXECUTABLE} ${pfasst_SOURCE_DIR}/tools/get_pfasst_version.py
     WORKING_DIRECTORY ${pfasst_SOURCE_DIR}
     COMMENT "Updating PFASST++ version number"
     USES_TERMINAL

tools/get_pfasst_version.py

@@ -1,7 +1,11 @@
-#!/usr/bin/env python
-#
-#
-#
+# encoding: utf-8
+
+from __future__ import print_function
+
+from sys import version_info
+
+if version_info[0] == 2 and version_info[1] < 7:
+    raise SystemExit("Insufficient Python Interpreter Version (%s < 2.7)" % (version_info,))
 
 import re
 import subprocess
@@ -25,3 +29,6 @@
 if config != new_config:
     with open(site_config, 'w') as f:
         f.write(new_config)
+    print("PFASST++ version set to: %s" % (version,))
+else:
+    print("PFASST++ version did not change (still %s)" % (version,))