[cups.development] dlopen() fails in the filter

Michael Sweet msweet at apple.com
Tue May 19 10:50:03 PDT 2009


On May 19, 2009, at 1:33 AM, Justin Huang wrote:
>> Experts,
>> We are developing a filter that requires to load some other dynamic  
>> libraies.
>> We are using dlopen() to load the libraries. It returns fail at  
>> runtime.
>> Is there any limitation  on using dlopen under CUPS architecture?
>>
>> p.s. The libraries are only for data processing, such as data  
>> compression. There is no user interaction in the library.
>
> In addition, we are developing the filter for Mac OS X.


What is errno set to after the failed dlopen?

Any messages in the error_log file? (use "cupsctl --debug-logging" to  
enable debug logging...)

________________________________________
Michael R Sweet, Senior Printing System Engineer

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