Nicolas Thierry-Mieg writes:
nspluginwrapper is for running 32-bit plugins in a 64-bit browser. Now that we have functional 64-bit flash and java plugins I don't see the need, but YMMV.
We do not have a functional 64-bit flash plugin, and no 64-bit adobe plugin, so we need the wrapper for those.
I've done some systematic testing this morning. If you don't want to read everything below, the summary is that on an x86_64 system, only the 64-bit java plugin works, and the 32-bit plugin crashes. This means that the only working setup on x86_64 is firefox + java plugin x86_64, nspluginwrapper plus Adobe + flash 32-bit plugins. The brave may try the beta 64-bit flash plugin.
Test setup. This is a 64-bit machine running CentOS 5.4, all relevant packages removed and a fresh, clean install of firefox 3.0.18 i386, Adobe reader 9.4, flash-plugin from rpmforge. I also extracted the java plugin from jre-6u22-linux-i586-rpm.bin and copied it into /usr/lib/mozilla/plugins.
$ ll /usr/lib/mozilla/plugins/ total 292 lrwxrwxrwx 1 root root 39 Nov 22 13:09 libflashplayer.so -> /usr/lib/flash-plugin/libflashplayer.so -rwxr-xr-x 1 root root 77510 Sep 15 09:44 libnpjp2.so -rwxr-xr-x 1 root root 30640 Oct 9 2009 mozplugger.so -rwxr-xr-x 1 root root 179552 Nov 22 13:09 nppdf.so $
firefox starts normally and about:plugins shows the adobe/flash/java plugins are installed. Then I browse to www.javatester.org and click on the "Java Enabled?" button. The result is a crash:
$ firefox Didn't find JVM under /usr/lib/mozilla/plugins firefox: ../../../../src/plugin/solaris/plugin2/common/JavaVM.c:104: InitializeJVM: Assertion `foundJVM' failed. /usr/lib/firefox-3.0.18/run-mozilla.sh: line 131: 6093 Aborted "$prog" ${1+"$@"} $
I get the same result with a binary, /usr/local based installation of firefox 3.6.12 (i386) from mozilla.org.
Next, I am trying the following: install the complete 32-bit java rpm under /usr/java.i386 and link the 32-bin java plugin rather than copy it.
$ cd /usr/lib/mozilla/plugins/ $ ll total 212 lrwxrwxrwx 1 root root 39 Nov 22 13:09 libflashplayer.so -> /usr/lib/flash-plugin/libflashplayer.so lrwxrwxrwx 1 root root 43 Nov 22 13:36 libnpjp2.so -> /usr/java.i386/default/lib/i386/libnpjp2.so -rwxr-xr-x 1 root root 30640 Oct 9 2009 mozplugger.so -rwxr-xr-x 1 root root 179552 Nov 22 13:09 nppdf.so $
Similar result.
$ firefox Error occurred during initialization of VM java/lang/NoClassDefFoundError: java/lang/Object $
The above proves conclusively that the 32-bit firefox browser is broken on a 64-bit system. The culprit is probably java.
Onward to x86_64. Remove all packages, start with a fresh install of Adobe reader, flash plugin (i386), jre-6u22-linux-x64-rpm.bin, firefox 3.0.18 x86_64, *no* nspluginwrapper. about:plugins shows the java plugin only, as expected, and the browser passes the "java enabled" test at javatester.org.
Then I install the i386 nspluginwrapper. No change in about:plugins, but I noticed this
$ ll plugins*/libn* lrwxrwxrwx 1 root root 38 Nov 22 13:51 plugins-wrapped/libnpjp2.so -> /usr/lib64/mozilla/plugins/libnpjp2.so lrwxrwxrwx 1 root root 39 Nov 22 13:46 plugins/libnpjp2.so -> /usr/java/default/lib/amd64/libnpjp2.so $
i.e. nspluginwrapper.i386 installation has wrapped the native 64-bit java plugin.
Last step is the installation of nspluginwrapper.x86_64 on top of all. All plugins show up and java works.
Summary: only the 64-bit browser works on a 64-bit machine. It needs nspluginwrapper to make use of the 32-bit blob plugins. The 32-bit browser crashes and burns as soon as java (or even java script) is involved. In this round of testing, I haven't seen the removal of the java plugin link from the plugins-wrapped directory that I reported earlier.
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