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There is a patch required to compile PHP 4 to use Tomcat 5.
Prior to version 2.4 of Servlet Specification, the name of the servlet jar file was servlet.jar. In version 2.4 of the Servlet Specification, this name was changed to servlet-api.jar. Tomcat 4 uses the name servlet.jar, whereas Tomcat 5 and later uses servlet-api.jar. This causes problems with PHP's configure script.
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