How do I install g++ 4.5 on ubuntu 10.10?

[NoOp]

On 11/18/2010 07:58 PM, Mark wrote:
> On Thu, Nov 18, 2010 at 6:55 PM, K. Frank <kfrank29.c at gmail.com> wrote:
>> Hi Mark -
>>
> 
> I'll be brief.  I misunderstood nothing.
> 
> Clearly, g++ (version 4.4) is *the* Ubuntu Maverick distribution
> package for the GNU C++ compiler, not g++-4.5.  g++-4.5 is a newer
> version that has not been blessed to be part of the distro yet.

That is incorrect. Just like any other package in the main repositories,
g++-4.5 is indeed a "blessed" package.

As you will see:
$ apt-cache policy g++-4.5
g++-4.5:
  Installed: 4.5.1-7ubuntu2
  Candidate: 4.5.1-7ubuntu2
  Version table:
 *** 4.5.1-7ubuntu2 0
        500 http://us.archive.ubuntu.com/ubuntu/ maverick/main amd64
Packages
        100 /var/lib/dpkg/status

is from the "Main" repository. It is not from universe, restricted,
multiverse, backports, or proposed.

Here are some links that may help you understand:

https://help.ubuntu.com/community/Repositories/Ubuntu
<quote>
Main - Officially supported software.
</quote>
https://help.ubuntu.com/community/UbuntuBackports

https://launchpad.net/ubuntu/+source/gcc-4.5

> 
> IOW, they *are* different packages.  You cannot get one from the other.  Period.

They are indeed different packages. However you can happily have both on
your system if you wish:

$ apt-cache policy g++
g++:
  Installed: 4:4.4.4-1ubuntu2
  Candidate: 4:4.4.4-1ubuntu2
  Version table:
 *** 4:4.4.4-1ubuntu2 0
        500 http://us.archive.ubuntu.com/ubuntu/ maverick/main amd64
Packages
        100 /var/lib/dpkg/status

$ apt-cache policy g++-4.5
g++-4.5:
  Installed: 4.5.1-7ubuntu2
  Candidate: 4.5.1-7ubuntu2
  Version table:
 *** 4.5.1-7ubuntu2 0
        500 http://us.archive.ubuntu.com/ubuntu/ maverick/main amd64
Packages
        100 /var/lib/dpkg/status

Nothing will blow up if you have both.

> 
> As for what is inside the packages, again, they are different packages
> - one has been blessed as *the* official package that is part of the
> distribution, one has not.  That's all.
> 
> You can want this not to be the case, or say you don't understand it,
> but it will be the way it is until the powers that be bless a new
> version as *the* official gcc/g++ for this distribution.  It's that
> simple - ne need to make it harder than it is.

Again, incorrect.

Please, before offering advise as to what is an official "blessed"
package or not, review the above links regarding repositories & packages.

Here are a few links that you might wish to bookmark for future reference:

https://help.ubuntu.com/
  https://help.ubuntu.com/10.10/index.html
https://help.ubuntu.com/community
  https://help.ubuntu.com/community/CommonQuestions
   https://help.ubuntu.com/community/SoftwareManagement
    https://help.ubuntu.com/community/InstallingSoftware
etc.