Re: [cbi-dev] Building with bree-libs causes a problem in org.eclipse.jd

[David M Williams <david_williams@xxxxxxxxxx>]

If it helps narrow down the issue, in WTP
we always used the IBM VM libraries to compile against ... so I happen
to have some handy examples, ... plus, we used care to include only those
we knew we needed. These are listed below. I assume Tycho computes different
target "bootclasspath" for different VM versions? (I.e. doesn't
assume the list of jars is the same for each version .... as you can see
that's not the case for IBM's VMs.

        <property
            name="J2SE-1.4"
            value="${env.JAVA_4_HOME}/jre/lib/core.jar:${env.JAVA_4_HOME}/jre/lib/xml.jar:${env.JAVA_4_HOME}/jre/lib/graphics.jar:${env.JAVA_4_HOME}/jre/lib/server.jar:${env.JAVA_4_HOME}/jre/lib/ibmorbapi.jar:${env.JAVA_4_HOME}/jre/lib/security.jar:${env.JAVA_4_HOME}/jre/lib/ibmpkcs.jar:${env.JAVA_4_HOME}/jre/lib/ibmjcefw.jar"/>
        <property
            name="J2SE-1.5"
            value="${env.JAVA_5_HOME}/jre/lib/core.jar:${env.JAVA_5_HOME}/jre/lib/vm.jar:${env.JAVA_5_HOME}/jre/lib/xml.jar:${env.JAVA_5_HOME}/jre/lib/graphics.jar:${env.JAVA_5_HOME}/jre/lib/server.jar:${env.JAVA_5_HOME}/jre/lib/ibmorbapi.jar:${env.JAVA_5_HOME}/jre/lib/security.jar:${env.JAVA_5_HOME}/jre/lib/ibmpkcs.jar:${env.JAVA_5_HOME}/jre/lib/ibmjcefw.jar"/>
        <property
            name="JavaSE-1.6"
            value="${env.JAVA_6_HOME}/jre/lib/rt.jar:${env.JAVA_6_HOME}/jre/lib/vm.jar:${env.JAVA_6_HOME}/jre/lib/java.util.jar:${env.JAVA_6_HOME}/jre/lib/xml.jar:${env.JAVA_6_HOME}/jre/lib/ibmorbapi.jar:${env.JAVA_6_HOME}/jre/lib/security.jar:${env.JAVA_6_HOME}/jre/lib/ibmpkcs.jar:${env.JAVA_6_HOME}/jre/lib/ibmjcefw.jar:${env.JAVA_6_HOME}/jre/lib/beans.jar:${env.JAVA_6_HOME}/jre/lib/logging.jar"/>

There's nothing about this where I'm suggesting a solution .... just offering as an example in case it helps understanding differences between vendor's VMs.

We only used things from "jre/lib" where as by default ... maybe, hard to know from referenced code ... appears Tycho may include "everything" (in ext and endorsed directories too?) ... so another possibility is some IBM version has some contradictory libs?  

HTH




From:        Igor Fedorenko <igor@xxxxxxxxxxxxxx>
To:        cbi-dev@xxxxxxxxxxx,
Date:        09/17/2012 04:40 PM
Subject:        Re: [cbi-dev] Building with bree-libs causes        a        problem        in        org.eclipse.jdt.compiler.tool
Sent by:        cbi-dev-bounces@xxxxxxxxxxx

---

There are two JDKs involved -- build JDK, i.e. the JDK that runs Tycho
and other build tools, and target JDK, i.e. the JDK the project is
compiled against.

For the target JDK, Tycho needs to find all jar files that include class
libraries provided by the JDK, and I am guessing this code [1]
misbehaves for IBM JDKs. This is just a guess, however, so the problem
can be something else.


[1]
https://git.eclipse.org/c/tycho/org.eclipse.tycho.git/tree/tycho-compiler-jdt/src/main/java/org/eclipse/tycho/compiler/jdt/CompilerMain.java#n103

--
Regards,
Igor

On 12-09-17 4:17 PM, John Arthorne wrote:
> Why would Tycho be affected by who the VM vendor is? Many of the class
> libraries are actually the same between the IBM and Oracle JDK's,
> especially these javax.tools packages. Do you think Tycho is making
> assumptions about JDK implementation details that might not be true for
> the IBM JDK?
>
> John
>
>
>
> *Igor Fedorenko <igor@xxxxxxxxxxxxxx>*
> Sent by: cbi-dev-bounces@xxxxxxxxxxx
>
> 09/17/2012 04:02 PM
> Please respond to
> Common-build Developers discussion <cbi-dev@xxxxxxxxxxx>
>
>
>                  
> To
>                  cbi-dev@xxxxxxxxxxx
> cc
>                  
> Subject
>                  Re: [cbi-dev] Building with bree-libs causes a        problem  in
>   org.eclipse.jdt.compiler.tool
>
>
>                  
>
>
>
>
>
> I believe this error can be explained by lack of IBM JDK support in Tycho.
>
> --
> Regards,
> Igor
>
> On 12-09-17 3:59 PM, John Arthorne wrote:
>  > I have entered this bug against JDT:
>  >
>  > https://bugs.eclipse.org/bugs/show_bug.cgi?id=389759
>  >
>  > John
>  >
>  >
>  >
>  > *Igor Fedorenko <igor@xxxxxxxxxxxxxx>*
>  > Sent by: cbi-dev-bounces@xxxxxxxxxxx
>  >
>  > 09/17/2012 03:02 PM
>  > Please respond to
>  > Common-build Developers discussion <cbi-dev@xxxxxxxxxxx>
>  >
>  >
>  >
>  > To
>  >                  cbi-dev@xxxxxxxxxxx
>  > cc
>  >
>  > Subject
>  >                  Re: [cbi-dev] Building with bree-libs causes a
> problem  in
>  >   org.eclipse.jdt.compiler.tool
>  >
>  >
>  >
>  >
>  >
>  >
>  >
>  >
>  >
>  >
>  > On 12-09-17 2:12 PM, John Arthorne wrote:
>  >  > I think being able to compile against IBM JDK is important. The Oracle
>  >  > JVM is not available on all platforms. In fact I thought
>  >  > build.eclipse.org was only using IBM JDK because there is no
> HotSpot for
>  >  > Linux PPC-64.
>  >
>  > Currently, it is not necessary to use JDK compatible with the
>  > build system. This is the case for Tycho and I also believe this is true
>  > for PDE/Build too. For example, build.eclipse.org uses win32 version of
>  > 1.4 jdk as far as I can tell. At least it was when I was setting up BREE
>  > libraries for CBI build.
>  >
>  >
>  >  >
>  >  > I also suggest entering a bug against JDT core for this. This is JDT
>  >  > core compiling itself, so there's a good chance the problem is in
>  > there ;)
>  >  >
>  >
>  > What JDT bug?
>  >
>  > JDT does not calculate compile classpath, at least not during Tycho
>  > build, so the bug should be against Tycho, not JDT
>  >
>  > If you are talking discrepancies when building against SUN and IBM JDKs,
>  > I do not know enough this to know if the problem is in JDT or IBM JDK. I
>  > brought this issue on cbi-dev earlier [1], btw.
>  >
>  >
>  > [1] http://dev.eclipse.org/mhonarc/lists/cbi-dev/msg00587.html
>  >
>  >
>  > --
>  > Regards,
>  > Igor
>  >
>  >
>  >  > John
>  >  >
>  >  >
>  >  >
>  >  > *Igor Fedorenko <igor@xxxxxxxxxxxxxx>*
>  >  > Sent by: cbi-dev-bounces@xxxxxxxxxxx
>  >  >
>  >  > 09/17/2012 01:52 PM
>  >  > Please respond to
>  >  > Common-build Developers discussion <cbi-dev@xxxxxxxxxxx>
>  >  >
>  >  >
>  >  >
>  >  > To
>  >  >  cbi-dev@xxxxxxxxxxx
>  >  > cc
>  >  >
>  >  > Subject
>  >  >  Re: [cbi-dev] Building with bree-libs causes a
>  > problem in
>  >  >   org.eclipse.jdt.compiler.tool
>  >  >
>  >  >
>  >  >
>  >  >
>  >  >
>  >  >
>  >  >
>  >  >
>  >  > No. How Tycho looks for jars is coded in java.
>  >  >
>  >  > Is this a requirement to be able to compile against IBM JDK? I
> know that
>  >  > compiling against IBM JDK 1.4 resulted in some discrepancies in
>  >  > generated class files compared to Juno, so I wonder if we can assume
>  >  > Oracle/SUN JDK for now.
>  >  >
>  >  > --
>  >  > Regards,
>  >  > Igor
>  >  >
>  >  > On 12-09-17 1:40 PM, Paul Webster wrote:
>  >  >  > On Mon, Sep 17, 2012 at 1:24 PM, Igor Fedorenko
> <igor@xxxxxxxxxxxxxx
>  >  >  > <mailto:igor@xxxxxxxxxxxxxx>> wrote:
>  >  >  >
>  >  >  >     Does the build work with Oracle/SUN JDK set in toolchain.xml?
>  >  >  >
>  >  >  >
>  >  >  > Looks like it works with an Oracle JDK.  Maybe a mismatch in
> the jars
>  >  >  > that the toolchain looks for and the IBM JRE provides?
>  >  >  >
>  >  >  > Is that something that can be modified in the toolchain.xml file?
>  >  >  >
>  >  >  > Later,
>  >  >  > PW
>  >  >  >
>  >  >  > --
>  >  >  > Paul Webster
>  >  >  > Hi floor.  Make me a sammich! - GIR
>  >  >  >
>  >  >  >
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