[Mono-dev] EntryPointNotFoundException with __Internal method

[Marcelo Zabani]

hmm Thanks Robert! I was only adding --export-dynamic to generate the
intermediary .o files. Now I've added it to create the *nginx* executable.
Do you have any hints on the problem of Marshal.SizeOf returning 0 (zero)?
This is the class whose size is said to be zero:

        *[StructLayout(LayoutKind.Sequential)]*
* public class NginxChain {*
* public NginxResponseBuffer buf;*
* public NginxChain next;*
* }*

NginxResponseBuffer is another class with sequential layout, although its
size is non-zero when calculated through Marshal.SizeOf.


On Mon, Apr 29, 2013 at 9:59 PM, Robert Jordan <robertj at gmx.net> wrote:

> On 29.04.2013 21:20, Marcelo Zabani wrote:
>
>> When embedding Mono within Nginx, I received the following exception:
>>
>> *Unhandled Exception: System.**EntryPointNotFoundException:
>> log_error_core_wrapper*
>> *  at (wrapper managed-to-native) Nam.NginxMethods:ngx_log_error
>> (uint,intptr,int,string)*
>> *  at Nam.NginxMethods.LogInfo (IntPtr log, System.String msg) [0x00000]
>> in
>> <filename unknown>:0 *
>>
>>
>> The DllImported method is this:
>>
>> *[DllImport ("__Internal", EntryPoint="log_error_core_**wrapper")]*
>> *public static extern void ngx_log_error(uint level, IntPtr log, int err,
>> string msg);*
>>
>>
> You must link the main executable (nginx) with the the
>
>         -Wl,--export-dynamic
>
> option, otherwise the dynamic linker won't expose its symbols to dlopen.
>
> Robert
>
>


-- 
Marcelo Zabani
(19) 9341-0221
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