Add automatic build of libcapnp if it's not detected

buildutils/msg.py

@@ -0,0 +1,39 @@
+"""logging"""
+
+# Copyright (c) PyZMQ Developers.
+# Distributed under the terms of the Modified BSD License.
+
+from __future__ import division
+
+import os
+import sys
+import logging
+
+#-----------------------------------------------------------------------------
+# Logging (adapted from h5py: http://h5py.googlecode.com)
+#-----------------------------------------------------------------------------
+
+
+logger = logging.getLogger()
+if os.environ.get('DEBUG'):
+    logger.setLevel(logging.DEBUG)
+else:
+    logger.setLevel(logging.INFO)
+logger.addHandler(logging.StreamHandler(sys.stderr))
+
+def debug(msg):
+    logger.debug(msg)
+
+def info(msg):
+    logger.info(msg)
+
+def fatal(msg, code=1):
+    logger.error("Fatal: " + msg)
+    exit(code)
+
+def warn(msg):
+    logger.error("Warning: " + msg)
+
+def line(c='*', width=48):
+    print(c * (width // len(c)))
+