Ralph Goers wrote:
While Geronimo can use the SLF4J api, due to its licensing Logback can only be an optional component for any Apache project. So you can expect that the default implementation used would be log4j.
Hello Ralph, You are right. At present time the ASF considers LGPL to be in category C (excluded licenses). However, I think one could argue that as long as some Apache software, say Geronimo, uses logback-classic via SLF4J, without ever linking against logback-classic, LGPL restrictions on distribution do not apply. I hope to eventually present this argument to legal@apache. A similar argument may apply to Tomcat embedding logback-access. Logback-access is deployed in Tomcat as a Valve (a Tomcat structure). Tomcat does not link with logback-access. In a similar vein, logback-access implements the Jetty RequestLog interface. Jetty does not link with logback-access. Cheers,
Ralph
-- Ceki Gülcü Logback: The reliable, generic, fast and flexible logging framework for Java. http://logback.qos.ch