Re: [Plplot-devel] Changed from treating libcd as an external library to building libnistcd internally

[Werner S. <sm...@ia...>]

Hi Arjen,
>

> I tried building PLplot with this device (and the new third-party
> library) turned on on bare Windows, but it fails:
> - The linker complains about cdImageColorClear() - it does not
>   seem to exist.

Only this function was not exported, since it is declared as private.  
Since it is used in the cgm driver I exported it as well.

> - The dll directory that is created under Windows does not contain
>   a corresponding dll for the CD library, only an import-library
>   that is empty as far as I can see.

I can't confirm that. I have a nistcd.dll and nistcd.lib in the dll  
directory and the cgm driver links and works. Could you try it again,  
if the changes I comitted solve your problem?

Thanks,
Werner

>
> I have not had an opportunity yet to examine the source code, but
> my guess is that for Windows we need to add the proper visibility
> attributes (dllexport). It is probably not too difficult to add
> them (after all, we have already done it for other libraries), but
> it may take me a couple of days - real life taking quite some of
> my time away.
>
> Regards,
>
> Arjen
>
> On 2009-03-09 08:36, Alan W. Irwin wrote:
>
>>
>> Please give this change a thorough testing.  If you don't know how  
>> to view
>> the resulting cgm files, they should be convertable to other vector  
>> graphics
>> formats such as svg using uniconvertor.  However, Debian Lenny let  
>> me down
>> in this case (See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=518816) 
>> .
>>
> ...
>>
>> After that build, the "display" application gave good results for  
>> our cgm
>> plots within the current limitations of the cgm device (Hershey  
>> fonts, no
>> antialising, etc.) Note, if you look at the cgm examples generated by
>> running the tests in lib/nistcd, the text is done with good looking  
>> fonts,
>> and the text and lines are nicely antialiased.  Thus, it is  
>> possible in
>> theory to overcome these current limitations for our cgm device if  
>> anybody
>> is interested on working on this device (considering that the  
>> external libcd
>> build is no longer a barrier to entry for using -dev cgm).
>>
>
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--
Dr. Werner Smekal
Institut fuer Allgemeine Physik
Technische Universitaet Wien
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