Linux – How to fix Tomcat missing SLF4j logging jars

I am getting this error when trying to start a new application using Tomcat:

Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory. For other containers, the corresponding directory should be used. For more information, see: http://wiki.apache.org/solr/SolrLogging

I'm not using Jetty, I'm using Tomcat, so my installation instructions are slightly different.

I've checked the link and read extensively on this – it seems like the libraries need to go in $CATALINA_BASE/lib – which in my case should be:

/usr/local/easy/share/easy-tomcat7/lib

However I've put the libraries there – no dice.

This is the lib directory:

./                        commons-io-2.3.jar        jsp-api.jar                 slf4j-api-1.7.6.jar      tomcat-juli-adapters.jar
../                       el-api.jar                jul-to-slf4j-1.7.7.jar      slf4j-api-1.7.7.jar      tomcat-juli.jar
annotations-api.jar       httpclient-4.3.1.jar      log4j.jar@                  slf4j-log4j12-1.7.7.jar  tomcat-util.jar
catalina-ant.jar          httpcore-4.3.jar          log4j-over-slf4j-1.7.7.jar  tomcat-api.jar           wstx-asl-3.2.7.jar
catalina-ha.jar           httpmime-4.3.1.jar        log4j.properties            tomcat-coyote.jar        zookeeper-3.4.6.jar
catalina.jar              jasper-el.jar             log4j.properties.bak        tomcat-i18n-es.jar
catalina-tribes.jar       jasper.jar                noggit-0.5.jar              tomcat-i18n-fr.jar
commons-collections.jar@  jasper-jdt.jar@           servlet-api.jar             tomcat-i18n-ja.jar
commons-dbcp.jar@         jcl-over-slf4j-1.7.7.jar  slf4j-1.7.7/                tomcat-jdbc.jar

As you can see, all the libraries should be there.

So what's causing this? Am I in the wrong Tomcat directory? Did I not grab the correct files? Is there some configuration setting I'm missing? I'm pretty much totally lost here.