https://issues.apache.org/activemq/browse/AMQCPP-253 Remove static mutex instance, this was allow APR methods to get executed before apr_initialize was called and since HP doesn't have any atomic builtins in APR the Hastable code in APR needs to be initialized before a mutex can get created.
activemq/activemq-cpp/branches/activemq-cpp-3.1.x/activemq-cpp/src/main/decaf/util/logging/LogManager.cpp