When building Csound6 from the instructions here; 
https://github.com/csound/csound/blob/develop/BUILD.md 

I get the following at the first step 1 of 3; 

~$ sudo apt-get build-dep csound

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Note, selecting 'libpng12-dev' instead of 'libpng-dev'
The following packages have unmet dependencies:
 libjack-dev : Depends: libjack0 (= 1:0.121.3
+20120418git75e3e20b-2.1ubuntu1) but it is not going to be installed
E: Build-dependencies for csound could not be satisfied.
~$ 
 
OS is Ubuntu 14.04 Studio version. Newly installed. 
CPU is Intel Pentium 4 CPU 2.80GHz 

Synaptic tells me I have the libjack-jackd2-0 library package presently
installed. 

It builds here in KXStudio 14.04 (=Kubuntu), using jack2
Do you have libjack-jackd2-dev installed?



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No, libjack-jackd2-dev  is not presently installed, 
(libjack-jackd2-0  is installed).

Perhaps I will install libjack-jackd2-dev  and try again. 

However, browsing the packages in Synaptic, I see Studio has 
already installed a Csound6, although it is not visible in the 
popdown menus. And no CsoundQt. 

   Csound version 6.02.0 (double samples) Jan 25 2014

Perhaps a new build and install would overwrite the 
executables of this earlier version. 


I will take a swing at Blue next, and see if that wishes 
to run with openJDK. 



On Fri, 2014-08-29 at 05:15 -0700, menno wrote:
> It builds here in KXStudio 14.04 (=Kubuntu), using jack2
> Do you have libjack-jackd2-dev installed?
> 
> 
> 
> --
> View this message in context: http://csound.1045644.n5.nabble.com/build-dep-problem-with-libjack-on-Ubuntu-tp5737213p5737215.html
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> 
> Send bugs reports to
>         https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe csound"
> 
> 
> 

i do not have Csound from the repo installed, i always build from git.
I presume your installed version is located in /usr/bin, /usr/lib etc.?
When you install your newly build Csound, it will install in /usr/local,
/usr/local...
This means it will not overwrite the old Csound version



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Could the github build be configured to use either libjack or libjack2,
whichever is already present?  

That would allow us to remove the Ubuntu Csound6 package, and rebuild
ourselves. The Github build does seem a good way forward.  



On Sat, 2014-08-30 at 10:42 -0500, Andres Cabrera wrote:
> Hi,

> I've also found this to be an issue on my system if I want to have
> supercollider installed. supercollider on Ubuntu depends on libjack2,
> while csound depends on libjack (1). I suspect that Csound would have
> no problem building against libjack2 (as the API changes are minimal
> AFAIK), but my main issue is that if I try to install libjack2 it
> wants to remove libportaudio-dev. This is not an issue with Csound,
> naturally, but I wonder what could be done here?
> 
> Cheers,
> 
> Andrés
> 
> 
> 
> On Sat, Aug 30, 2014 at 3:13 AM, adam  wrote:
>         No, libjack-jackd2-dev  is not presently installed,
>         (libjack-jackd2-0  is installed).
>         
>         Perhaps I will install libjack-jackd2-dev  and try again.
>         
>         However, browsing the packages in Synaptic, I see Studio has
>         already installed a Csound6, although it is not visible in the
>         popdown menus. And no CsoundQt.
>         
>            Csound version 6.02.0 (double samples) Jan 25 2014
>         
>         Perhaps a new build and install would overwrite the
>         executables of this earlier version.
>         
>         
>         I will take a swing at Blue next, and see if that wishes
>         to run with openJDK.
>         
>         
>         
>         On Fri, 2014-08-29 at 05:15 -0700, menno wrote:
>         > It builds here in KXStudio 14.04 (=Kubuntu), using jack2
>         > Do you have libjack-jackd2-dev installed?
>         >
>         >
>         >
>         > --
>         > View this message in context:
>         http://csound.1045644.n5.nabble.com/build-dep-problem-with-libjack-on-Ubuntu-tp5737213p5737215.html
>         > Sent from the Csound - General mailing list archive at
>         Nabble.com.
>         >
>         >
>         > Send bugs reports to
>         >         https://github.com/csound/csound/issues
>         > Discussions of bugs and features can be posted here
>         > To unsubscribe, send email sympa@lists.bath.ac.uk with body
>         "unsubscribe csound"
>         >
>         >
>         >
>         
>         
>         
>         
>         Send bugs reports to
>                 https://github.com/csound/csound/issues
>         Discussions of bugs and features can be posted here
>         To unsubscribe, send email sympa@lists.bath.ac.uk with body
>         "unsubscribe csound"
>         
>         
>         
>         
> 
> 

This following is a reply from a bug report on a Ubuntu jack 
thread. 

I think it suggests Ubuntu Studio is not the place to be for any wider
jack coherence. 

Think I will exit that Studio environment. Am looking closely at a
Debian Stable at present. 



> ---- 
That is correct. Try installing libjack2-dev.

Jack1 and jack2 can't (in ubuntu) coexist on the same machine. If you
wish
to use jack1 then you must first remove jack2, but be prepared, anything
that relies on jackd2 will also be removed. This is not recommended. The
choice of jack1 or jack2 should be made before any jackd related sw is
installed on the machine. UbuntuStudio is designed to use jack2.
> ---- 



On Sat, 2014-08-30 at 10:42 -0500, Andres Cabrera wrote:
> Hi,
> 
> 
> I've also found this to be an issue on my system if I want to have
> supercollider installed. supercollider on Ubuntu depends on libjack2,
> while csound depends on libjack (1). I suspect that Csound would have
> no problem building against libjack2 (as the API changes are minimal
> AFAIK), but my main issue is that if I try to install libjack2 it
> wants to remove libportaudio-dev. This is not an issue with Csound,
> naturally, but I wonder what could be done here?
> 
> Cheers,
> 
> Andrés
> 
> 
> 
> On Sat, Aug 30, 2014 at 3:13 AM, adam  wrote:
>         No, libjack-jackd2-dev  is not presently installed,
>         (libjack-jackd2-0  is installed).
>         
>         Perhaps I will install libjack-jackd2-dev  and try again.
>         
>         However, browsing the packages in Synaptic, I see Studio has
>         already installed a Csound6, although it is not visible in the
>         popdown menus. And no CsoundQt.
>         
>            Csound version 6.02.0 (double samples) Jan 25 2014
>         
>         Perhaps a new build and install would overwrite the
>         executables of this earlier version.
>         
>         
>         I will take a swing at Blue next, and see if that wishes
>         to run with openJDK.
>         
>         
>         
>         On Fri, 2014-08-29 at 05:15 -0700, menno wrote:
>         > It builds here in KXStudio 14.04 (=Kubuntu), using jack2
>         > Do you have libjack-jackd2-dev installed?
>         >
>         >
>         >
>         > --
>         > View this message in context:
>         http://csound.1045644.n5.nabble.com/build-dep-problem-with-libjack-on-Ubuntu-tp5737213p5737215.html
>         > Sent from the Csound - General mailing list archive at
>         Nabble.com.
>         >
>         >
>         > Send bugs reports to
>         >         https://github.com/csound/csound/issues
>         > Discussions of bugs and features can be posted here
>         > To unsubscribe, send email sympa@lists.bath.ac.uk with body
>         "unsubscribe csound"
>         >
>         >
>         >
>         
>         
>         
>         
>         Send bugs reports to
>                 https://github.com/csound/csound/issues
>         Discussions of bugs and features can be posted here
>         To unsubscribe, send email sympa@lists.bath.ac.uk with body
>         "unsubscribe csound"
>         
>         
>         
>         
> 
>