jvmti and endorsed mechanism

[Dr Andrew John Hughes]

On 13:29 Tue 15 Mar     , Jiri Vanek wrote:
> Does anybody know why endorsed mechanism is used during build of jvmti?
>   - exepct the one I found: that -classapth seems to me as being ignored 
> by xslt transformation done by jvmtiGen (or???)
> 
> Current (part of) jvmti build looks like this:
> in configure (configure.ac? - I'm not used for auto-tools) is defined 
> XALAN2_JAR nad XERCES2_JAR. Those  two files are then linked from 
> icedtea6-1.10/bootstrap/ecj/lib/endorsed. 
> icedtea6-1.10/bootstrap/ecj/lib/endorsed is set (somewhere) into 
> ENDORSED variable, which is added by jvmtiEnv.patch into jvmti.make.
> result in jvmti.make:
> XSLT = $(QUIETLY) $(REMOTE) $(RUN.JAVA) $(ENDORSED) -classpath 
> $(JvmtiOutDir) jvmtiGen
> ...
> $(XSLT) -IN $(JvmtiSrcDir)/jvmti.xml -XSL $(JvmtiSrcDir)/jvmtiEnter.xsl 
> -OUT $(JvmtiOutDir)/jvmtiEnter.cpp -PARAM interface jvmti
> 
> where the build was failing with  Exception in thread "main" 
> java.lang.NoClassDefFoundError: org/w3c/dom/ElementTraversal.
> 
> This was caused by new version of xalan, which left xml-commons-apis 
> from its "inner" classpath.
> 
> linking xml-commons-* from endorsed(^^) dir solved this problem
> 
> This is exactly the state endorsed dir mechanism  should protect from - 
> there should be clases which should be used prior all other classes. In 
> our case there shoud be drop of xalan/xerces which are working instead 
> of links to /usr/share/java/... .
> 
> Most easy fix to make icedea 1.10 build run on F15 is to link ^^ 
> mentioned files from endorsed dir in makefile (if anybody can handle 
> ./configure part I will be more then happy).
> 
> Better fixes are two - use endorsed dir properly and use working drop of 
> xalan and xerces (I'm afraid with all of those xml-commons-* beause 
> commons used by by "our-working" xalan willnot be avaiable in f15) or 
> get rid of it and use normal -classpath (which can be difficult if 
> endorsed dir was used with reason)
> 
> Hope that I have written this clearly:)
> 
> Regards J.
> 
> 
> 

You don't provide any background here:

* What JDK are you building with?
* What version of Xerces?
* What version of Xalan?

A full build and config.log would be good.
-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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