Bug#955694: scilab: FTBFS: Scilab cannot create Scilab Java Main-Class (we have not been able to find the main Scilab class. Check if the Scilab and thirdparty packages are available).

[Gilles Filippini]

Control: tags -1 + help

Lucas Nussbaum a écrit le 03/04/2020 à 21:55 :
> Source: scilab
> Version: 6.1.0+dfsg1-1
> Severity: serious
> Justification: FTBFS on amd64
> Tags: bullseye sid ftbfs
> Usertags: ftbfs-20200402 ftbfs-bullseye
> 
> Hi,
> 
> During a rebuild of all packages in sid, your package failed to build
> on amd64.
> 
> Relevant part (hopefully):
[...]
>> -- Building documentation (en_US) --
>> LANG=en_US.UTF-8 LC_ALL=C SCI_DISABLE_TK=1 SCI_JAVA_ENABLE_HEADLESS=1 _JAVA_OPTIONS='-Djava.awt.headless=true' HOME=/tmp ./bin/scilab-adv-cli -noatomsautoload -nb -l en_US -nouserstartup -e "try xmltojar([],[],'en_US');catch disp(lasterror()); exit(-1);end;exit(0);"
>> Picked up _JAVA_OPTIONS: -Djava.class.path=/usr/share/java/flexdock.jar:/usr/share/java/skinlf.jar:/usr/share/java/looks.jar:/usr/share/java/commons-logging.jar:/usr/share/java/jhall.jar:/usr/share/java/lucene-core-4.10.4.jar:/usr/share/java/lucene-analyzers-common-4.10.4.jar:/usr/share/java/lucene-queryparser-4.10.4.jar:/usr/share/maven-repo/org/freehep/freehep-util/debian/freehep-util-debian.jar:/usr/share/maven-repo/org/freehep/freehep-io/debian/freehep-io-debian.jar:/usr/share/maven-repo/org/freehep/freehep-graphicsio/debian/freehep-graphicsio-debian.jar:/usr/share/java/freehep-graphicsio-emf-2.1.jar:/usr/share/java/freehep-graphics2d-2.1.1.jar:/usr/share/java/jrosetta-API.jar:/usr/share/java/jrosetta-engine-1.0.4.jar:/usr/share/java/jgraphx.jar:/usr/share/java/jogl2.jar:/usr/share/java/gluegen2-rt.jar:/usr/share/java/jeuclid-core.jar:/usr/share/java/jlatexmath-fop-1.0.7.jar:/usr/share/java/fop.jar:/usr/share/java/saxon.jar:/usr/share/java/batik.jar:/usr/share/java/xml-apis-ext.jar:/usr/share/java/commons-io.jar:/usr/share/java/xmlgraphics-commons.jar:/usr/share/java/avalon-framework.jar:/usr/share/java/jlatexmath-1.0.7.jar:/usr/share/java/ecj.jar:/usr/share/java/javax.activation.jar:/usr/share/java/jaxb-runtime.jar:modules/commons/jar/org.scilab.modules.commons.jar:modules/console/jar/org.scilab.modules.console.jar:modules/history_browser/jar/org.scilab.modules.history_browser.jar:modules/jvm/jar/org.scilab.modules.jvm.jar:modules/graph/jar/org.scilab.modules.graph.jar:modules/scinotes/jar/org.scilab.modules.scinotes.jar:modules/localization/jar/org.scilab.modules.localization.jar:modules/renderer/jar/org.scilab.modules.renderer.jar:modules/javasci/jar/org.scilab.modules.javasci.jar:modules/ui_data/jar/org.scilab.modules.ui_data.jar:modules/core/jar/org.scilab.modules.core.jar:modules/completion/jar/org.scilab.modules.completion.jar:modules/gui/jar/org.scilab.modules.gui.jar:modules/helptools/jar/org.scilab.modules.helptools.jar:modules/external_objects_java/tests/libintl.jar:modules/external_objects_java/jar/org.scilab.modules.external_objects_java.jar:modules/scirenderer/jar/scirenderer.jar:modules/types/jar/org.scilab.modules.types.jar:modules/preferences/jar/org.scilab.modules.preferences.jar:modules/action_binding/jar/org.scilab.modules.action_binding.jar:modules/history_manager/jar/org.scilab.modules.history_manager.jar:modules/graphic_objects/jar/org.scilab.modules.graphic_objects.jar:modules/xcos/jar/org.scilab.modules.xcos.jar:modules/graphic_export/jar/org.scilab.modules.graphic_export.jar: -Djava.awt.headless=true
>> WARNING: An illegal reflective access operation has occurred
>> WARNING: Illegal reflective access by org.scilab.modules.jvm.LibraryPath (file:/<<PKGBUILDDIR>>/scilab/modules/jvm/jar/org.scilab.modules.jvm.jar) to field java.lang.ClassLoader.sys_paths
>> WARNING: Please consider reporting this to the maintainers of org.scilab.modules.jvm.LibraryPath
>> WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
>> WARNING: All illegal access operations will be denied in a future release
>> Could not access to the Main Scilab Class:
>> Exception in thread "main" java.lang.ExceptionInInitializerError
>> 	at org.scilab.modules.localization.Messages.gettext(Unknown Source)
>> 	at org.scilab.modules.commons.xml.XConfiguration.<clinit>(Unknown Source)
>> 	at org.scilab.modules.core.Scilab.<clinit>(Unknown Source)
>> Caused by: java.lang.NullPointerException
>> 	at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2646)
>> 	at java.base/java.lang.Runtime.loadLibrary0(Runtime.java:830)
>> 	at java.base/java.lang.System.loadLibrary(System.java:1870)
>> 	at org.scilab.modules.localization.MessagesJNI.<clinit>(Unknown Source)
>> 	... 3 more
>>
>> Scilab cannot create Scilab Java Main-Class (we have not been able to find the main Scilab class. Check if the Scilab and thirdparty packages are available).
>> make[2]: *** [Makefile:2250: doc] Error 1
> 
> The full build log is available from:
>    http://qa-logs.debian.net/2020/04/02/scilab_6.1.0+dfsg1-1_unstable.log

This is a runtime error, not a build one. It occurs the very same way
when running the current scilab binary (6.1.0+dfsg1-1) with openjdk-11
11.0.7+9-1.

A change between openjdk-11 11.0.6+10-2 and 11.0.7+9-1 triggered this.

This is weird. Loading scilab libraries from their absolute path with
System.load() seems to work, while loading them using
System.loadLibrary() doesn't. The property java.library.path is correct
though.

I'd like to do a bisect between openjdk-11 11.0.6+10-2 and 11.0.7+9-1 to
better understand the problem but I can't find the corresponding branch
on the openjdk Mercurial repo.

Any help appreciated. This is blocking the HDF5 transition.

Thanks,

_g.