Hey guys, I'm working on getting Perl bindings to Plasma working, so that you could create plasma widgets in Perl. However, I'm having trouble getting things to load properly.
I have a subclass of KPluginFactory that I've called KPerlPluginFactory. This is what's responsible for creating a Perl interpreter and loading up the correct modules, etc. Then I have a .desktop file I've placed in share/kde4/services/ that tells plasma an applet exists, and to load it using kperlpluginfactory. The plugin loads successfully, and creates a Perl interpreter just fine. The problem comes when the Perl code needs to load in more Perl modules dynamically. kperlpluginfactory does link to libperl, but because Plasma doesn't export the symbols of the loaded plugin (aka, the load hint QLibrary::ExportExternalSymbolsHint is not set when the plugin is loaded), symbols from the dynamically loaded Perl modules don't get resolved. So I get something like this: > plasmoidviewer perl-hello-plasmoid Can't load '/usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Devel/Peek/Peek.so' for module Devel::Peek: /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/auto/Devel/Peek/Peek.so: undefined symbol: Perl_runops_standard at /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/XSLoader.pm line 64. at /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/Devel/Peek.pm line 19 Compilation failed in require at /home/cburel/perlqtinstall//QtGui4.pm line 25. BEGIN failed--compilation aborted at /home/cburel/perlqtinstall//QtGui4.pm line 25. Compilation failed in require at /home/cburel/perlqtinstall//KDEUi4.pm line 23. BEGIN failed--compilation aborted at /home/cburel/perlqtinstall//KDEUi4.pm line 23. Compilation failed in require at /home/cburel/.kde4/share/apps/plasma_applet_perl_hello_plasmoid/PlasmaAppletPerlHelloPlasmoid.pm line 10. BEGIN failed--compilation aborted at /home/cburel/.kde4/share/apps/plasma_applet_perl_hello_plasmoid/PlasmaAppletPerlHelloPlasmoid.pm line 10. I've come up with two workarounds so far. One is to use LD_PRELOAD to load libperl.so, which isn't really a solution, but it did work in my test. The other is to modify KPluginFactory to have the option of specifying load hints in the constructor, and then have plasma check for a key in the .desktop file to determine if the symbols from the plugin should be exported. Or maybe there's some other/better way for me to make sure that loading kperlpluginfactory will export the necessary symbols from libperl.so? -Chris _______________________________________________ Plasma-devel mailing list Plasma-devel@kde.org https://mail.kde.org/mailman/listinfo/plasma-devel
