gcc-12 Emerge Fails

[jagdpanther]

I unmerged GCC-12 (because I am using gcc-13) I forgot that gcc-12 is
needed by nvidia-cuda-toolkit. (Probably just for the install because I can still run stable diffusion.)

When I try to emerge gcc-12 I receive an error. See below. Any ideas on
re-emerging gcc-12? Should I try the binary version?

[CooSee]

you should rather use the ebuild from pentoo https://gpo.zugaina.org/dev-util/nvidia-cuda-toolkit which will compile with gcc-13.

i assume you're already using a personal overlay - just copy the ebuild and enjoy.


_________________
" Die Realität ist eine Illusion, die durch Mangel an ehrlicher Kommunikation entsteht "
---
" Der Mensch ist von Natur aus neugierig, was am Ende übrig bleibt ist die Gier "

[jagdpanther]

CooSee: I am using nvidia-cuda-toolkit from the standard Gentoo repository.

I may try adding the pentoo repository. I see the nvidia-cuda-toolkit version is also newer.

Thank you for the suggestion.

[CooSee]

you're welcome!

look at https://wiki.gentoo.org/wiki/Creating_an_ebuild_repository

and howto handle multiple repositories https://forums.gentoo.org/viewtopic-p-8659032.html?sid=53a4e813df95fded4fba3c3fb4580945 - look at my post - use it as an example.

or clone pentoo repo to a Folder and copy the ebuild you need to your local repo.


_________________
" Die Realität ist eine Illusion, die durch Mangel an ehrlicher Kommunikation entsteht "
---
" Der Mensch ist von Natur aus neugierig, was am Ende übrig bleibt ist die Gier "

[jagdpanther]

In this case for only one package, I like the idea of my own e-build repository instead of a large repo with lots of packages. (I am making an assumption about the pentoo repo). The only down-side is that keeping it up-to-date relies on ME. Thank you for the links. I'll try it this coming weekend.

There is a "new" incentive for me to work on this ... I can not use "emerge --depclean" until fix this issue. (Also, --exclude does not seem to work with emerge --depclean ...) Here is what "emerge --depclean -p" gives which will be "fixed" after I move to a newer nvidia-cuda-toolkit ebuild that uses gcc-13 ..

[Hu]

[jagdpanther]

I'll try the local repository path forward to use a newer cuda first and if I have issues then I'll try to reinstall gcc-12 to use the slightly older Gentoo repository provided cuda.

Hu: Yes, I did a bad thing and used emerge --unmerge sys-devel/gcc:12. I did this after having to run "emerge --resume --skipfirst" to skip over gcc-12 in the middle of step 16 of the profile upgrade to version 23. At the end of that very long emerge I did the quick emerge --unmerge gcc:12. At the beginning of the profile upgrade I switched to -march=raptorlake from -march=native as native did not work. (I think an i9-13900k should be raptorlake.) I ASSUME there was no issue with the emerge of cuda because I had not yet deleted gcc-12.


CooSee: Following the instructions in the Gentoo Wiki https://wiki.gentoo.org/wiki/Creating_an_ebuild_repository seem to work. One issue is that when I first tried to use it emerge didn't see the new package. eix gave me a clue:

[Hu]

You may wish to read my post in open-vm-tools not available for ARM, where someone else trying to use a local repository encountered the same problem. In short, the ebuild expects to use the files directory from the directory containing the ebuild. If you fork the ebuild, you need to copy or link back to the original files directory.

[jagdpanther]

Hu: Thanks.

My solution. (Although I would like to get my new local repo up and running with the newer cuda but I don't need it.)

eselect repository disable -f local # because it is currently not working and the only package is cuda

edit /etc/portage/make.conf to

[Hu]

It looks like you just need to override CFLAGS / CXXFLAGS for gcc-12. Many people use package.env to apply per-package overrides of specific environment variables. I expect that would work here.

[sam_]

We may be able to update downgrade_arch_flags in toolchain.eclass to handle this if someone knows what it would be appropriate to replace raptorlake with for older GCCs.