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Date:	Sat, 13 Aug 2022 23:57:17 +0100
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Subject:	Re: [geda-user] Active filter
To:	geda-user AT delorie DOT com
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From:	"Roger Burghall (roger DOT burghall1 AT btinternet DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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I used to have those packages until I got my new laptop with Ubuntu 
20.04 installed; now I don't, and this afternoon I retrieved the files 
from GitHub to a new directory, and ran my 'Build' script (I'm not as 
sure about 'makefile') and created an executable that runs.

You are no doubt right about not checking in the executable, which I did 
without thinking. Even another version of Ubuntu will fail to execute 
it, I'm sure - at least 20.04 won't run an executable made under 16.04 
in my experience.

Back in the early 1970s I was working in medical research, where signal 
impedances are high, frequencies are low and mains interference is a 
nightmare, which is how I got interested in Active Filters, and the 
Wireless World articles were a godsend.

I have long planned on collecting together my more basic programs for 
synthesis and analysis of Sallen-and-Key, Rauch (i.e. multiple feedback) 
and software (discrete) filters with circuit diagrams, and then perhaps 
making a YouTube video on their use. Here "planned", you will 
understand, is synonymous with "vaguely thought about", but if anyone is 
interested in the least I'll give it more priority.

/roger AT roger-Latitude-5520: sudo find / -iname libgnome-2.0//
//[sudo] password for roger: //
//find: ‘/run/user/1001/doc’: Permission denied//
//find: ‘/run/user/1001/gvfs’: Permission denied//
//roger AT roger-Latitude-5520:~$ sudo find / -iname libgnomeui-2.0//
//find: ‘/run/user/1001/doc’: Permission denied//
//find: ‘/run/user/1001/gvfs’: Permission denied//
//roger AT roger-Latitude-5520:/



On 13/08/2022 18:54, karl AT aspodata DOT se [via geda-user AT delorie DOT com] wrote:
> Roger Burghall
>> I have updated my project "r-burg/rbfilter" on github, and I */think
>> /*it should now work.
>   I'm missing:
> Package 'libgnome-2.0', required by 'virtual:world', not found
> Package 'libgnomeui-2.0', required by 'virtual:world', not found
>   don't know which package they are in. I'm running gentoo here,
>   and I have opted out of gnome a long time ago, so I guess that
>   is a show stopper.
>
> BTW, it is not a good idea to check in the final biniary, since
> c++ is picky about which build tools you use and are using to
> run the program. If you want to distribute the final program as is
> it is best to make it static.
>
>> Of course, like you, I was looking to understand the subject as
>> much as to create a software tool. It is an interesting subject,
>> isn't it?!
> ...
>
> It's in the genes I think:)
>
> Regards,
> /Karl Hammar
>
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<html>
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    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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  <body>
    <p>I used to have those packages until I got my new laptop with
      Ubuntu 20.04 installed; now I don't, and this afternoon I
      retrieved the files from GitHub to a new directory, and ran my
      'Build' script (I'm not as sure about 'makefile') and created an
      executable that runs.</p>
    <p>You are no doubt right about not checking in the executable,
      which I did without thinking. Even another version of Ubuntu will
      fail to execute it, I'm sure - at least 20.04 won't run an
      executable made under 16.04 in my experience.</p>
    <p>Back in the early 1970s I was working in medical research, where
      signal impedances are high, frequencies are low and mains
      interference is a nightmare, which is how I got interested in
      Active Filters, and the Wireless World articles were a godsend.</p>
    <p>I have long planned on collecting together my more basic programs
      for synthesis and analysis of Sallen-and-Key, Rauch (i.e. multiple
      feedback) and software (discrete) filters with circuit diagrams,
      and then perhaps making a YouTube video on their use. Here
      "planned", you will understand, is synonymous with "vaguely
      thought about", but if anyone is interested in the least I'll give
      it more priority.</p>
    <p><i>roger AT roger-Latitude-5520: sudo find / -iname libgnome-2.0</i><i><br>
      </i><i>[sudo] password for roger: </i><i><br>
      </i><i>find: ‘/run/user/1001/doc’: Permission denied</i><i><br>
      </i><i>find: ‘/run/user/1001/gvfs’: Permission denied</i><i><br>
      </i><i>roger AT roger-Latitude-5520:~$ sudo find / -iname
        libgnomeui-2.0</i><i><br>
      </i><i>find: ‘/run/user/1001/doc’: Permission denied</i><i><br>
      </i><i>find: ‘/run/user/1001/gvfs’: Permission denied</i><i><br>
      </i><i>roger AT roger-Latitude-5520:</i></p>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 13/08/2022 18:54, <a class="moz-txt-link-abbreviated" href="mailto:karl AT aspodata DOT se">karl AT aspodata DOT se</a>
      [via <a class="moz-txt-link-abbreviated" href="mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>] wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:20220813175440 DOT 0699D80A0383 AT turkos DOT aspodata DOT se">
      <pre class="moz-quote-pre" wrap="">Roger Burghall
</pre>
      <blockquote type="cite">
        <pre class="moz-quote-pre" wrap="">I have updated my project "r-burg/rbfilter" on github, and I */think 
/*it should now work.
</pre>
      </blockquote>
      <pre class="moz-quote-pre" wrap="">
 I'm missing:
Package 'libgnome-2.0', required by 'virtual:world', not found
Package 'libgnomeui-2.0', required by 'virtual:world', not found
 don't know which package they are in. I'm running gentoo here,
 and I have opted out of gnome a long time ago, so I guess that
 is a show stopper.

BTW, it is not a good idea to check in the final biniary, since
c++ is picky about which build tools you use and are using to
run the program. If you want to distribute the final program as is
it is best to make it static.

</pre>
      <blockquote type="cite">
        <pre class="moz-quote-pre" wrap="">Of course, like you, I was looking to understand the subject as
much as to create a software tool. It is an interesting subject,
isn't it?!
</pre>
      </blockquote>
      <pre class="moz-quote-pre" wrap="">...

It's in the genes I think:)

Regards,
/Karl Hammar

</pre>
    </blockquote>
  </body>
</html>

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