gcc install/upgrade question

[John Summerfield]

bruce wrote:
> hi...
> 
> a basic question.
> 
> fc6 comes with gc4.1 . i'm looking to test gc4.2, and would like to have a
> parallel dev environment so i have both 4.1 and 4.2.
> 
> i'm trying to find pointers on what needs to be done, to make sure i don't
> screw up the current 4.1 environment.
> 
> it appears that all i need to do is to set a prefix dir when i do the
> initial configure.
> 
>  --./configure --prefix=/gcc42
>  --make
>  --make install
> 
> this appears to place everything under the gcc42 top level dir. however,
> what will i need to do to actually be able to hook into the libs/objs
> created by the gcc4.2 build. what will i have to insert into my paths, or
> rather where should the information be placed.. in the bashrc/profile
> files/etc...


The standard way in this case is to follow the supplier's advice:FSF in 
this case. It should install to /usr/local, well out of your way and 
defined by standards to be used this way.


> 
> pointers/sites on this would be helpful. haven't been able to find a good
> site that walks through this...
> 
> once i test 4.2, i'll just rebuild, and rewrite gcc4.1. are there any issues
> that i'm going to run into when i do that!

If the versions are in different locations, there is no problem at all. 
You'd choose the one you want by setting PATH appropriately.

You could even contemplate a virtual machine just for the occasion: over 
there, across the room, I have a 64-bit system running F8T3 for just 
this sort of thing.




-- 

Cheers
John

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