Re: [gentoo-user] Upgrading gcc from 6.4 to 7.3

[gevisz <gevisz@gmail.com>]

2018-06-20 14:16 GMT+03:00 Mick <michaelkintzios@gmail.com>:
> On Wednesday, 20 June 2018 11:43:32 BST gevisz wrote:
>> After updating portage tree today, portage
>> suggested to upgrade gcc from 6.4 to 7.3
>> version what I have done just now.
>>
>> Nevertheless,
>> # gcc-config --list-profiles
>>  [1] x86_64-pc-linux-gnu-6.4.0 *
>>  [2] x86_64-pc-linux-gnu-7.3.0
>> shows that I still have version 6.4 as a default.
>
> I'm on gcc-7.3.0-r3 and have not noticed any problems on 3 boxen so far.
>
>
>> As https://wiki.gentoo.org/wiki/Upgrading_GCC
>> still do not have any specific instructions on
>> switching to gcc version 7.3, I am still afread
>> of switching to gcc version 7.3 and would like
>> to ask if anybody encountered some problem
>> after switching to gcc version 7.3 and which
>> packages should be rebuild after such switching.
>>
>> Thank you in advance for your help.
>
> I didn't have to rebuild anything, but if you have reasons to fear breakage
> you can rebuild your toolchain:
>
> 1. Use gcc-config to select x86_64-pc-linux-gnu-7.3.0
> 2. Re-source /etc/profile by running in your current console/terminal:
>     . /etc/profile
> 3. Re-emerge libtool:
>     emerge -1 sys-devel/libtool
> 4. Re-emerge the following packages in this order:
>     emerge -1 sys-devel/gcc-7.3.0-r3
>     emerge -1 sys-devel/binutils
>     emerge -1 sys-libs/glibc
> 5. You could if you want re-emerge your entire system, 'emerge -e @world' or
> if you would rather conserve electricity wait as different packages come up
> for an update over time.
>
> If my experience to date holds true and for a general purpose desktop none of
> the above rebuilds are necessary, other than switching your gcc to 7.3.0.

Thank you for your reply. I do not want to rebuild gcc-7.3 for the second time
today (as far as the temperature in my room is already +30°C). So, I will stick
to your last advice: I will just switch the default gcc version to 7.3
and wait for
problems to appear. :)