Clang/Desktop profile

Some users may wish to use LLVM as a desktop system, because of bug #913225 it is currently not possible to officialy support these in Gentoo, however it is still possible to create them locally using the follow steps.

Create a local repository

A local repository is needed for the custom profile to be created.

First, install app-eselect/eselect-repository:

root #emerge --ask app-eselect/eselect-repository

Create a local repository:

root #eselect repository create local

Set up the repository layout

It's recommended to make use of a Portage extension for the repository as it simplifies configuration:

FILE /var/db/repos/local/metadata/layout.conf

masters = gentoo
thin-manifests = true

# Needed for profiles parent with repo syntax
profile-formats = portage-2

Create the profile

profiles.desc

profiles.desc provides a list of profiles for eselect profile list to consume:

FILE /var/db/repos/local/profiles/profiles.desc

# Adjust the list below as needed, no need to make them all
amd64 llvm-desktop exp
amd64 llvm-plasma-systemd exp
amd64 llvm-plasma-split-usr exp

The profile itself

Create the following directories (adjust as needed):

/var/db/repos/local/profiles/llvm-desktop
/var/db/repos/local/profiles/llvm-plasma-systemd
/var/db/repos/local/profiles/llvm-plasma-split-usr

Use the following command:

root #mkdir -p /var/db/repos/local/profiles/llvm-desktop

llvm-desktop

Create the following files:

FILE /var/db/repos/local/profiles/llvm-desktop/eapi

FILE /var/db/repos/local/profiles/llvm-desktop/parent

gentoo:default/linux/amd64/23.0/llvm
gentoo:targets/desktop

llvm-plasma-systemd

Create the following files:

FILE /var/db/repos/local/profiles/llvm-plasma-systemd/eapi

FILE /var/db/repos/local/profiles/llvm-plasma-systemd/parent

gentoo:default/linux/amd64/23.0/llvm
gentoo:targets/desktop/plasma
gentoo:targets/systemd

llvm-plasma-split-usr

Create the following files:

FILE /var/db/repos/local/profiles/llvm-plasma-split-usr/eapi

FILE /var/db/repos/local/profiles/llbm-plasma-split-usr/parent

gentoo:default/linux/amd64/23.0/llvm
gentoo:features/split-usr
gentoo:targets/desktop/plasma

Selecting the profile

The new profiles should now appear in eselect profile list. Enjoy!

TODO

Add more profiles