Cannot load libpurple plugins dynamically on iOS

[Joe Jordan]

Looks like g_module_symbol("purple_init_plugin") calls dlsym("_purple_init_plugin") here, but dlsym expects "purple_init_plugin" without the leading underscore.  Perhaps my glib (glib_2.20.4-3_iphoneos-arm.deb) is broken?

At any rate, this patch works for me, for now:

iJoe:~/pidgin/pidgin-2.9.0/libpurple mobile$ diff -u plugin.h.old plugin.h
--- plugin.h.old	2011-08-16 19:49:13.000000000 +1000
+++ plugin.h	2011-08-16 19:32:09.000000000 +1000
@@ -230,8 +230,8 @@
 	}
 #else /* PURPLE_PLUGINS  && !PURPLE_STATIC_PRPL */
 # define PURPLE_INIT_PLUGIN(pluginname, initfunc, plugininfo) \
-	G_MODULE_EXPORT gboolean purple_init_plugin(PurplePlugin *plugin); \
-	G_MODULE_EXPORT gboolean purple_init_plugin(PurplePlugin *plugin) { \
+	G_MODULE_EXPORT gboolean _purple_init_plugin(PurplePlugin *plugin); \
+	G_MODULE_EXPORT gboolean _purple_init_plugin(PurplePlugin *plugin) { \
 		plugin->info = &(plugininfo); \
 		initfunc((plugin)); \
 		return purple_plugin_register(plugin); \


Cheers,
Joe


On 16/08/2011, at 2:43 PM, Joe Jordan wrote:

> On 16/08/2011, at 1:58 PM, Ethan Blanton wrote:
> 
>> Joe Jordan spake unto us the following wisdom:
>>> I have built libpurple for (jailbroken) iOS, but it cannot dynamically
>>> load any plugins.  I get debug output such as:
>>> 
>>> plugins: /var/mobile/pidgin/install/lib/purple-2/ssl-gnutls.so is not
>>> usable because the 'purple_init_plugin' symbol could not be found.
>>> 
>>> The symbol looks alright to me:
>>> 
>>> iJoe:~/pidgin/install/lib/purple-2 mobile$ nm -g ssl-gnutls.so | grep 'T '
>>> 000031e8 T _purple_init_plugin
>> 
>> Symbol munging may be broken.  Change it to try _purple_init_plugin
>> and see if it works.
>> 
>> Ethan
> 
> Thanks for the reply Ethan,
> 
> Unfortunately it doesn't look like this change helps.
> 
> (sorry for the dup reply - meant to reply to the list...)
> 
> -Joe
> 
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