plugin entry missing

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Hi,

Since my basic dissector POC is now running with LUA, I was trying to start the C version of that based on an empty plugin development as described in the doc.

I set up the whole environment (win64), brought it to compile, and added an empty nut shell of a plugin as explained in the documentation.

Everything built and then I wanted to run that. I copied that into user's personnal plugin directory of WS, but then I had this error (translated from french the best I could):

Entry point of the proto_register_plugin procedure can not be found in the dynamic Library c:\users\<usr>\AppData\Roaming\plugins\foo.dll

So I thought this was a problem with my settings/implementation. But then I remembered that in the documentation, I had to rely on the gryphon plugin as sample. So I copied the gryphon.dll in that same directory, and I got the same problem with the gryphon plugin.

What can be wrong? Have the entry point changed? How can I remedy?

Thanks!