[fpc-pascal] linking an fpc .o file without common symbols?

Peter Vreman peter at freepascal.org
Tue Jul 25 21:05:48 CEST 2006

At 22:18 24-7-2006, you wrote:
>I'm new to free-pascal, and have searched for a few hours without 
>finding an answer to my question.  I hope someone on the list could 
>please help point me in the right direction.
>I've been using a couple of encryption/decryption units that are 
>written in Pascal that I've been using in a userspace networking 
>tool for some time.  For performance reasons, I want to move those 
>routines out of userspace and implement an iptables match (Linux 
>kernel module) and invoke the pascal routine.  After much trial and 
>error, I have successfully compiled a Linux kernel module, my 
>fpc-generated .o file, system.o and objpas.o together.  However, 
>when I load the module, the kernel refuses it because it contains 
>common symbols, and suggests that I recompile with the "-fno-common" 
>flag (gcc flag?).  After some research, nm system.o shows 30 or so 
>symbols marked as ' C ', for common.  Is there any way for me to 
>tell the fpc compiler to re-compile system.o and initialize the 30 
>or so symbols so that they won't be marked as "common"?

There is no option for it.


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