Re: [myhdl-list] Re: error message of vpi_control, need help

[Chun L. Z. <chu...@ho...>]

Jan,

Thank you very much for your kindly help. I resolved the problem finally by
upgrading my simulator from Cadence ldv4.1 to ldv5.1. The problem is gone.

Rgds

-Arnold

----- Original Message ----- 
From: "Jan Decaluwe" <ja...@ja...>
To: <myh...@li...>
Sent: Tuesday, December 21, 2004 7:28 PM
Subject: [myhdl-list] Re: error message of vpi_control, need help


> Chun Lin Zhang wrote:
>
> > Any other sugguestions?
>
> Apparently something goes wrong with dynamic linking.
> Below I will do some more guesses, but if it doesn't help,
> please tar up all files you use in the process and add
> an exact description of the operating system you are
> using - all to minimize the guess work.
>
> Are you sure that you use the correct compile/linking
> procedure for shared libraries with ncsim?
>
> One thing I could think of is that you need to use
> the flag -export-dynamic with the linker when working
> with dynamic libraries.
>
> The only example you have in the distribution is Icarus,
> and Icarus and this may not help you much as Icarus
> hides the details of the compile/link process for you.
> Therefore, I have attached the makefile for linux that has
> been used succesfully to cosimulate with the open
> source Verilog simulator cver. That has more
> raw details and may help you with compile flags.
>
> Jan
>
> -- 
> Jan Decaluwe - Resources bvba - http://jandecaluwe.com
> Losbergenlaan 16, B-3010 Leuven, Belgium
>     Python is fun, and now you can design hardware with it:
>     http://jandecaluwe.com/Tools/MyHDL/Overview.html
>


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----


> # could add to CFLAGS to turn on warnings if you are using gcc
> WARNS=-Wall
>
> # change this path to point to the pli include files directory for cver
> INCS=-I$(HOME)/gplcver-1.10f.src/pli_incs
> # maybe want -O<something> and/or -g
> CFLAGS= -fPIC -Wall -g $(INCS)
> LFLAGS= -G -shared -export-dynamic
>
> # change to your compiler
> CC=gcc
>
> all: myhdl_vpi.so
>
> myhdl_vpi.o: myhdl_vpi.c
> $(CC) $(CFLAGS) -c myhdl_vpi.c
>
> # make rules for dynamic libaries
> myhdl_vpi.so: myhdl_vpi.o
> $(LD) $(LFLAGS) myhdl_vpi.o -o myhdl_vpi.so
>
>