On Sun, Apr 12, 2015 at 06:00:51PM +0200, Mathias Krause wrote: > When building perf with perl or python support it implicitly gets linked > with the -export-dynamic linker option through the additional linker > flags, namely with -Wl,-E via perl or -Xlinker -export-dynamic via > python. That flag is essential for the traceevent plugin support so we > shouldn't rely on adding it implicitly. > > Ensure perf's exported symbols can be used by dlopen()ed plugins by > unconditionally adding this flag when linking perf. Otherwise plugins > won't be able to access symbols in the perf binary. > > This fixes the following warning / bug when trying to load plugins: > > Warning: could not load plugin > '/home/minipli/.traceevent/plugins/plugin_xen.so' > /home/minipli/.traceevent/plugins/plugin_xen.so: undefined symbol: > trace_seq_printf > Warning: could not load plugin > '/home/minipli/.traceevent/plugins/plugin_function.so' > /home/minipli/.traceevent/plugins/plugin_function.so: undefined symbol: > warning > Warning: could not load plugin > '/home/minipli/.traceevent/plugins/plugin_sched_switch.so' > /home/minipli/.traceevent/plugins/plugin_sched_switch.so: undefined symbol: > pevent_unregister_event_handler > [...]
hum, not sure now how -export-dynamic works but should this be rather in traceevent lib then? jirka -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
