[gentoo-user] Re: testing system + gcc-5.2 anyone?

[James]

Helmut Jarausch <jarausch <at> skynet.be> writes:


> > Just for grins, I'm thinking about installing a gentoo system
> > that is (~) testing and newer codes and setting gcc-.5.2
> I don't use lxqt here, but ...

lxqt is trivial and not critical, so let's just ignore that part.

> I'm using gcc-5.2.0 very successfully here. I am not aware of a single
package which doesn't compile with
> this version.
> And the kernel itself compiles just fine (currentlich running 4.2.0-rc6
compiled with gcc-5.2.0)

WOW!  cool beans.....

OK so going this far out on the compiler is new ground for me
(but very exciting too....


Looking at the portage tree, I doubt you got gcc-5.2.8 there......?

using 'eix -eR' I do not see and ebuild anywhere for that new
and specific version (5.2.8)


Did you use  a (9999) version from somewhere?
eix -eR gcc | grep 9999
     (4.8-vcs) **4.8.4_pre9999^s[11]
     (4.9-vcs) **4.9.1_pre9999^s[11]
     (4.10-vcs) **4.10.0_pre9999^s[11]
     (9999) **9999^s[6]

Or can your reference some guide or briefly outline the steps to
you used  (including patches) to get gcc-5.2.8 ?

I'm guess you just had a regularly (default) gentoo install and upgraded
the gcc and then just recompiled (@everyhing?) Some guidance on that
process would be keen too.

> One caveat though when upgrading a system which has been built with gcc-x
for x < 5.
> The (pure) C++ libraries aren't compatible with older versions so that all
packages which link to
> libstdc++ or libsupc++ have to be rebuilt. Packages which just use C
aren't effected at all.

What about boost?

I'll start off with a minimal install and get it all upgraded to
gcc-5.2.8-rhelmut and then slow add/test codes from there...

> Helmut

This is fantastic!

THANKS IN ADVANCE for any guidance you are comfortable providing.


James