[zeromq-dev] coding note: redirecting libzmq/czmq library logging

Michael Haberler mail17 at mah.priv.at
Thu Feb 13 20:52:47 CET 2014

the libraries write assertion errors to stderr (eg libzmq/src/err.hpp) or stdout for debugging (e.g. zclock_log())

that's a tad annoying in a daemon setup where you'd want to have that output go to syslog instead of a terminal

I found this neat trick, which enables redirection of FILE * operations (NB: not fd's like used with open/close/read/write):


with this it's easy to redirect log output for libzmq and czmq.

- Michael

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