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Bug 554386 - dev-java/fop-2.0 is non-functional
Summary: dev-java/fop-2.0 is non-functional
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Java (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Java team
URL: https://bz.apache.org/bugzilla/show_b...
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-07-09 21:06 UTC by Nick Bowler
Modified: 2015-07-11 18:00 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---


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Description Nick Bowler 2015-07-09 21:06:21 UTC
The recently-added-and-stabilized fop-2.0 installs OK but the tool seems to be
non-functional.  This is easily demonstrated on any of the example files
provided with the fop distribution.

This package seems to have been stabilized in a hurry, and all the old
versions were removed, but those older versions actually worked...

  % fop-2 fop-2.0/examples/fo/basic/simple.fo output.pdf
  Jul 09, 2015 4:56:44 PM org.apache.fop.area.RenderPagesModel addPage
  SEVERE: Error while rendering page 1
  java.util.MissingResourceException: File event-model.xml not found
  	at org.apache.fop.events.DefaultEventBroadcaster.loadModel(DefaultEventBroadcaster.java:83)
  	at org.apache.fop.events.DefaultEventBroadcaster.getEventProducerModel(DefaultEventBroadcaster.java:114)
  	at org.apache.fop.events.DefaultEventBroadcaster.createProxyFor(DefaultEventBroadcaster.java:142)
  	at org.apache.fop.events.DefaultEventBroadcaster.getEventProducerFor(DefaultEventBroadcaster.java:129)
  	at org.apache.fop.render.RendererEventProducer$Provider.get(RendererEventProducer.java:44)
  	at org.apache.fop.render.intermediate.EventProducingFilter.endPage(EventProducingFilter.java:50)
  	at org.apache.fop.render.intermediate.IFRenderer.renderPage(IFRenderer.java:602)
  	at org.apache.fop.area.RenderPagesModel.addPage(RenderPagesModel.java:123)
  	at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.finishPage(AbstractPageSequenceLayoutManager.java:315)
  	at org.apache.fop.layoutmgr.PageSequenceLayoutManager.finishPage(PageSequenceLayoutManager.java:216)
  	at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:140)
  	at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267)
  	at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:130)
  	at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:360)
  	at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190)
  	at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
  	at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
  	at org.apache.xerces.xinclude.XIncludeHandler.endElement(Unknown Source)
  	at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
  	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
  	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
  	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
  	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
  	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
  	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
  	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
  	at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:485)
  	at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:285)
  	at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)
  	at org.apache.fop.cli.Main.startFOP(Main.java:186)
  	at org.apache.fop.cli.Main.main(Main.java:217)

  Jul 09, 2015 4:56:44 PM org.apache.fop.cli.Main startFOP
  SEVERE: Exception
  org.apache.fop.apps.FOPException: File event-model.xml not found
  java.util.MissingResourceException: File event-model.xml not found
  	at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:288)
  	at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)
  	at org.apache.fop.cli.Main.startFOP(Main.java:186)
  	at org.apache.fop.cli.Main.main(Main.java:217)
  Caused by: java.util.MissingResourceException: File event-model.xml not found
  	at org.apache.fop.events.DefaultEventBroadcaster.loadModel(DefaultEventBroadcaster.java:83)
  	at org.apache.fop.events.DefaultEventBroadcaster.getEventProducerModel(DefaultEventBroadcaster.java:114)
  	at org.apache.fop.events.DefaultEventBroadcaster.createProxyFor(DefaultEventBroadcaster.java:142)
  	at org.apache.fop.events.DefaultEventBroadcaster.getEventProducerFor(DefaultEventBroadcaster.java:129)
  	at org.apache.fop.render.RendererEventProducer$Provider.get(RendererEventProducer.java:44)
  	at org.apache.fop.render.intermediate.EventProducingFilter.endPage(EventProducingFilter.java:50)
  	at org.apache.fop.render.intermediate.IFRenderer.renderPage(IFRenderer.java:602)
  	at org.apache.fop.area.RenderPagesModel.addPage(RenderPagesModel.java:123)
  	at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.finishPage(AbstractPageSequenceLayoutManager.java:315)
  	at org.apache.fop.layoutmgr.PageSequenceLayoutManager.finishPage(PageSequenceLayoutManager.java:216)
  	at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:140)
  	at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267)
  	at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:130)
  	at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:360)
  	at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190)
  	at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
  	at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
  	at org.apache.xerces.xinclude.XIncludeHandler.endElement(Unknown Source)
  	at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
  	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
  	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
  	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
  	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
  	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
  	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
  	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
  	at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:485)
  	at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:285)
  	... 3 more

  ---------

  java.util.MissingResourceException: File event-model.xml not found
  	at org.apache.fop.events.DefaultEventBroadcaster.loadModel(DefaultEventBroadcaster.java:83)
  	at org.apache.fop.events.DefaultEventBroadcaster.getEventProducerModel(DefaultEventBroadcaster.java:114)
  	at org.apache.fop.events.DefaultEventBroadcaster.createProxyFor(DefaultEventBroadcaster.java:142)
  	at org.apache.fop.events.DefaultEventBroadcaster.getEventProducerFor(DefaultEventBroadcaster.java:129)
  	at org.apache.fop.render.RendererEventProducer$Provider.get(RendererEventProducer.java:44)
  	at org.apache.fop.render.intermediate.EventProducingFilter.endPage(EventProducingFilter.java:50)
  	at org.apache.fop.render.intermediate.IFRenderer.renderPage(IFRenderer.java:602)
  	at org.apache.fop.area.RenderPagesModel.addPage(RenderPagesModel.java:123)
  	at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.finishPage(AbstractPageSequenceLayoutManager.java:315)
  	at org.apache.fop.layoutmgr.PageSequenceLayoutManager.finishPage(PageSequenceLayoutManager.java:216)
  	at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:140)
  	at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267)
  	at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:130)
  	at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:360)
  	at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190)
  	at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102)
  	at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
  	at org.apache.xerces.xinclude.XIncludeHandler.endElement(Unknown Source)
  	at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
  	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
  	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
  	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
  	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
  	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
  	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
  	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
  	at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:485)
  	at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:285)
  	at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:115)
  	at org.apache.fop.cli.Main.startFOP(Main.java:186)
  	at org.apache.fop.cli.Main.main(Main.java:217)

Portage 2.2.20 (python 2.7.9-final-0, default/linux/amd64/13.0, gcc-4.8.4, glibc-2.20-r2, 4.0.1 x86_64)
=================================================================
System uname: Linux-4.0.1-x86_64-Intel-R-_Core-TM-2_Quad_CPU_Q8300_@_2.50GHz-with-gentoo-2.2
KiB Mem:     3917148 total,    867940 free
KiB Swap:          0 total,         0 free
Timestamp of repository gentoo: Wed, 08 Jul 2015 00:45:01 +0000
sh bash 4.3_p33-r2
ld GNU ld (Gentoo 2.24 p1.4) 2.24
distcc 3.1 x86_64-pc-linux-gnu [disabled]
ccache version 3.1.9 [enabled]
app-shells/bash:          4.3_p33-r2::gentoo
dev-java/java-config:     2.2.0::gentoo
dev-lang/perl:            5.20.2::gentoo
dev-lang/python:          2.7.9-r1::gentoo, 3.3.5-r1::gentoo, 3.4.1::gentoo
dev-util/ccache:          3.1.9-r4::gentoo
dev-util/cmake:           3.2.2::gentoo
sys-apps/baselayout:      2.2::gentoo
sys-apps/openrc:          0.17::gentoo
sys-apps/sandbox:         2.6-r1::gentoo
sys-devel/autoconf:       2.13::gentoo, 2.69::gentoo
sys-devel/automake:       1.11.6-r1::gentoo, 1.12.6::gentoo, 1.13.4::gentoo, 1.14.1::gentoo
sys-devel/binutils:       2.24-r3::gentoo
sys-devel/gcc:            3.4.6-r2::gentoo, 4.1.2::gentoo, 4.2.4-r1::gentoo, 4.8.4::gentoo
sys-devel/gcc-config:     1.7.3::gentoo
sys-devel/libtool:        2.4.6::gentoo
sys-devel/make:           4.1-r1::gentoo
sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers)
sys-libs/glibc:           2.20-r2::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: webrsync
    sync-uri: rsync://rsync.gentoo.org/gentoo-portage
    sync-user: portage
    priority: -1000

gentoo-draconx
    location: /usr/local/portage
    masters: gentoo
    priority: 0

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="@FREE @OTHER-FREE"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -march=core2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /etc/stunnel/stunnel.conf /usr/share/gnupg/qualified.txt /var/lib/hsqldb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.5/ext-active/ /etc/php/apache2-php5.6/ext-active/ /etc/php/cgi-php5.5/ext-active/ /etc/php/cgi-php5.6/ext-active/ /etc/php/cli-php5.5/ext-active/ /etc/php/cli-php5.6/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/ssl/certs/ca-certificates.crt /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c"
CXXFLAGS="-O2 -march=core2 -pipe"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--keep-going --quiet-build --with-bdeps=y --autounmask-write=n --dynamic-deps=n --unordered-display"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs ccache config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync webrsync-gpg xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="ftp://mirror.csclub.uwaterloo.ca/gentoo-distfiles/"
INSTALL_MASK="/usr/share/cursors/xorg-x11/default 	/usr/share/alsa/alsa.conf.d/51-pulseaudio-probe.conf 	/etc/profile.d/qtgui4.sh"
LANG="en_CA.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j5"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
USE="X acl alsa amd64 berkdb bzip2 cairo cjk cli cracklib crypt cups curl cvs cxx doc dri enca exif fbcon fdt ffmpeg flac fontconfig fontforge fortran gdbm gnutls gpm graphviz gtk iconv icu idn imagemagick ipv6 jadetex jpeg kpathsea latex lcms libass lto mad mmx mmxext modules mp3 mp4 multilib ncurses nls nptl ogg opengl openmp otr pam pcre perl png python readline sdl session smp sse sse2 ssl svg tcpd tex4ht theora threads tiff truetype unicode vim-syntax vorbis xattr xcb xft xinerama xulrunner xv zlib" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2 sse3 sse4_1 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en_CA en ja" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" QEMU_SOFTMMU_TARGETS="arm i386 x86_64" QEMU_USER_TARGETS="arm mips mipsel ppc ppc64" RUBY_TARGETS="ruby19 ruby20" USERLAND="GNU" VIDEO_CARDS="intel fbdev" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CPPFLAGS, CTARGET, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Comment 1 Nick Bowler 2015-07-09 21:11:23 UTC
This upstream report seems related.

The binary distribution provided by upstream works correctly.
Comment 2 Patrice Clement gentoo-dev 2015-07-11 18:00:18 UTC
Nick

Older versions were certainly working but relied on an unsecure version of batik which we had to drop. Therefor, we had to bump fop to its latest iteration in order to make it work with batik (since fop 1.x wasn't compatible with it), and maybe, I must admit, it was done in a hurry. But again, it was done in order to give users the latest version possible. Sometimes, such transitions go smoothly and sometimes it doesn't. Deal with it. See bug 543858 for a bit of background.

On a side note: arch teams try to do their best to test whether packages
compile or not, when a stabilise request for the so-called package is filed. If
it does compile on the target platform, they mark it as stable and move on.
They do not go into details and test every single edge case and every single option. It would be MADNESS to do so and a HUGE time sink. We simply cannot afford it.

That being said, I have found the correct fix for this error thanks to the link you've provided. fop has a strange way to compile up and it is all laid out in this link: http://wiki.apache.org/xmlgraphics-fop/HowTo/BuildFOPAlternatively

For Gentoo, this results in the following diff:

Index: fop-2.0.ebuild
===================================================================
RCS file: /var/cvsroot/gentoo-x86/dev-java/fop/fop-2.0.ebuild,v
retrieving revision 1.10
diff -u -B -r1.10 fop-2.0.ebuild
--- fop-2.0.ebuild      5 Jul 2015 21:51:08 -0000       1.10
+++ fop-2.0.ebuild      11 Jul 2015 17:38:27 -0000
@@ -67,19 +67,28 @@
 "
 
 TARGETS=(
+       resourcegen
        jar-hyphenation
        jar-sandbox
        jar-main
 )
 
 java_prepare() {
-       epatch "${FILESDIR}"/${P}-build.xml.patch
-
-       find "${S}"/lib -type f -name \*.jar | xargs rm -v
+       find "${S}"/lib -type f | xargs rm -v
 }
 
 src_compile() {
-       EANT_GENTOO_CLASSPATH_EXTRA="$(java-pkg_getjars --build-only qdox-1.12)"
+       # https://bugs.gentoo.org/show_bug.cgi?id=554386
+       # http://wiki.apache.org/xmlgraphics-fop/HowTo/BuildFOPAlternatively
+       java-pkg_jar-from --into lib qdox-1.12 qdox.jar
+       java-pkg_jar-from --into lib xmlgraphics-commons-2 xmlgraphics-commons.jar
+       java-pkg_jar-from --into lib commons-logging commons-logging.jar
+       java-pkg_jar-from --into lib commons-io-1 commons-io.jar
+       java-pkg_jar-from --into lib fontbox-1.7 fontbox.jar
+       java-pkg_jar-from --into lib xml-commons-external-1.3 xml-apis-ext.jar
+       java-pkg_jar-from --into lib xml-commons-external-1.3 xml-apis.jar
+       java-pkg_jar-from --into lib avalon-framework-4.2 avalon-framework.jar
+       java-pkg_jar-from --virtual --into lib servlet-api-3.0 servlet-api.jar

The patch that I previously commited in bug 553982 disabled the eventResourceGenerator task definition. It turns out this task generates the missing event-model.xml file. See:

resourcegen:
    [mkdir] Created dir: /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/codegen-classes
    [javac] Compiling 3 source files to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/codegen-classes
    [javac] warning: [options] bootstrap class path not set in conjunction with -source 1.6
    [javac] 1 warning
     [copy] Copying 2 files to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/codegen-classes
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/accessibility/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/afp/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/area/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/fo/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/fo/flow/table/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/fonts/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/layoutmgr/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/layoutmgr/inline/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/render/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/render/bitmap/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/render/pcl/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/render/pdf/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/render/pdf/extensions/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/render/ps/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/render/rtf/event-model.xml
[eventResourceGenerator] Event model written to /var/tmp/portage/dev-java/fop-2.0/work/fop-2.0/build/gensrc/org/apache/fop/svg/event-model.xml

So far so good. After installing the resulting ebuild, if I try your command again, the outcome looks lot better:

# bzcat /usr/share/fop-2/examples/fo/basic/simple.fo.bz2 > simple.fo
# fop-2 simple.fo out.pdf
Jul 11, 2015 6:39:16 PM org.apache.fop.events.LoggingEventListener processEvent
INFO: Rendered page #1.

+  11 Jul 2015; Patrice Clement <monsieurp@gentoo.org>
+  -files/fop-2.0-build.xml.patch, fop-2.0.ebuild:
+  Mend compiling process by dropping previous patch and adding back
+  eventResourceGenerator task definition so that event-model.xml files are
+  correctly generated. Add required jars into lib directory using java-pkg_jar-
+  from. Fix bug 554386.
+

I must admit though, this package is a pain in the arse to compile. I would never have found out the fix without your link. Thanks for the heads up and the hint.