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

[K. Frank]

Hello NoOp -

Yes, thanks, this seems to work.  I do have a
some follow-up questions.

On Thu, Nov 18, 2010 at 7:46 PM, NoOp <glgxg at sbcglobal.net> wrote:
> On 11/18/2010 04:12 PM, K. Frank wrote:
> ...
>> Well, here's one example:
>>
>> I right click on:
>>    gcc-4.5_4.5.1-10ubuntu1_i386.deb
>> and select "Open With Ubuntu Software Center."
>>    Dependency is not satisfiable: gcc-4.5-base (= 4.5.1-10ubuntu1)
>> ...
> My apologies for my previous post... Try this:
>
> $ sudo apt-get install g++-4.5
>
> that should yield something along the lines of:
>
> Reading package lists... Done
> ...
> I _think_ that is what you are looking for. If so, you may also want to
> go back later and install the suggested packages. Or:

That (mostly) did the trick.

My first question:

What is the difference between:

   sudo apt-get install g++-4.5  (which seems to work)

and

   sudo apt-get install g++  (which installed 4.4)

It never occurred to me to specify g++-4.5.  Is there some
sort of hierarchical naming convention going on?

Second question:

How can I get g++ to resolve to version 4.5?

The command g++ is not known (although g++-4.5 is), e.g.,

   $ g++ --version
   The program 'g++' can be found in the following packages:
    * g++
    * pentium-builder
   Try: sudo apt-get install <selected package>

while

   $ g++-4.5 --version
   g++-4.5 (Ubuntu/Linaro 4.5.1-7ubuntu2) 4.5.1 ...

Third question:

Not that I care, but suppose I had wanted to install
4.5.1-10ubuntu1 (as I tried to do with dpkg)?  Why
did "apt-get install g++-4.5" resolve to 4.5.1-7?  Is
4.5.1-10 not compatible with ubuntu 10.10?

Thanks for your help, and for any additional clarification
you can provide.


K. Frank