adjust installation docs to discourage installing GMP, MPFR and MPC separately

[Quentin Neill]

On Fri, Jan 20, 2012 at 6:10 PM, Jonathan Wakely <jwakely.gcc@gmail.com> wrote:
> On 20 January 2012 23:08, Quentin Neill  wrote:
>>
>> My 2c - I heartily recommend this patch.
>
> Thanks. I'm a bit surprised noone else has commented - I hoped this
> would be a no-brainer, or at least get some constructive feedback for
> further improvement.

Another +1 for this patch.  Who can approve?

Seems like this would be okay for stage4 too.

>> May I suggest updating
>> /cvs/gcc/wwwdocs/htdocs/install/prerequisites.html
> That's exactly the page I'm trying to change, it's generated from the
> texi file my patch changes.

Didn't know that, makes sense.

>> And perhaps add a page to the twiki
>> http://gcc.gnu.org/wiki/BuildingGCC to catch google searches for
>> "building gcc"?
>
> I recently added http://gcc.gnu.org/wiki/InstallingGCC
> I chose "installing" not "building" because I believe that of the
> people who fail to build GCC and look for support, most of them
> probably should have installed a pre-built package supplied by their
> OS or another third-party packager. Maybe it could be changed to
> attract more search hits.

Yes I saw your InstallingGCC and I like it.  I was thinking a
BuildingGCC would catch searches and could direct to InstallingGCC.
Does MoinMoin have a way to attach keyword data to a page?  Consider
where InstallingGCC appears in these different results from google:

? https://www.google.com/search?q=installing+gcc <-surprised me
? http://www.google.com/search?q=building+gcc
? http://www.google.com/search?q=building+gcc+wiki
#2 http://www.google.com/search?q=installing+gcc+wiki
#4 http://www.google.com/search?q=building+installing+gcc

Another suggestion would be to link from one or both of these:
http://gcc.gnu.org/install/index.html
http://gcc.gnu.org/install/build.html
-- 
Quentin