216 lines
7.7 KiB
Markdown
216 lines
7.7 KiB
Markdown
# ALHP
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[](https://somegit.dev/anonfunc/ALHP.GO/src/branch/master/LICENSE)
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[](https://status.alhp.dev)
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[](https://goreportcard.com/report/somegit.dev/ALHP/ALHP.GO)
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[](https://pkg.go.dev/somegit.dev/ALHP/ALHP.GO)
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[](https://liberapay.com/anonfunc/)
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Buildbot for Archlinux-based repos build with different
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[x86-64 feature levels](https://www.phoronix.com/scan.php?page=news_item&px=GCC-11-x86-64-Feature-Levels), `-O3` and
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[LTO](https://en.wikipedia.org/wiki/Interprocedural_optimization).
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> 📢 **x86-64-v4** repos just released. [If your CPU supports v4](#1-check-your-system-for-support), you
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> can [try them out](#switch-between-levels).
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> ⚠️ NVIDIA graphic users using the **proprietary driver** is highly recommended reading the
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> [FAQ about Linux kernel modules](#directly-linked-kernel-modules) ⚠️
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---
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<!-- TOC -->
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* [Quickstart](#quickstart)
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* [FAQ](#faq)
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* [Remove ALHP packages](#remove-alhp-packages)
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* [LTO](#lto)
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* [Linux Kernel packages](#linux-kernel-packages)
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* [Directly linked kernel modules](#directly-linked-kernel-modules)
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* [Mirrors](#mirrors)
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* [What packages are built](#what-packages-are-built)
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* [Why is package X not up-to-date](#why-is-package-x-not-up-to-date)
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* [Debug symbols](#debug-symbols)
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* [Switch between levels/repos](#switch-between-levels)
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* [Matrix](#matrix)
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* [Donations](#donations)
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* [License and Legal](#license-and-legal)
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<!-- TOC -->
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---
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## Quickstart
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### 1. Check your system for support
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> **Important**: Before you enable any of these repos, check if your system supports the feature level you want to
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> enable
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(e.g. `x86-64-v3`).
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> **If you don't check beforehand, you might be unable to boot your system anymore and need to downgrade any package
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that you may have upgraded.**
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Check which feature-levels your CPU supports with
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```bash
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/lib/ld-linux-x86-64.so.2 --help
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```
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Example output snippet for a system supporting up to `x86-64-v3`:
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```
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Subdirectories of glibc-hwcaps directories, in priority order:
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x86-64-v4
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x86-64-v3 (supported, searched)
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x86-64-v2 (supported, searched)
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```
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### 2. Install keyring & mirrorlist
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Install [alhp-keyring](https://aur.archlinux.org/packages/alhp-keyring/)
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and [alhp-mirrorlist](https://aur.archlinux.org/packages/alhp-mirrorlist/) from **AUR**.
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Example with `yay`:
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```bash
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yay -S alhp-keyring alhp-mirrorlist
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```
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`alhp-keyring` provides the current signing keys used by ALHP, `alhp-mirrorlist` a selection of mirrors.
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### 3. Choose a mirror (optional)
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Edit `/etc/pacman.d/alhp-mirrorlist` and comment out/in mirrors you want to have enabled/disabled. Per default selected
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is a cloudflare-based mirror which
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[*should* provide decent speed worldwide](https://somegit.dev/ALHP/ALHP.GO/issues/38#issuecomment-891).
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> Note: Only `alhp.dev` is hosted by ALHP directly. If you have problems with a mirror,
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> open an issue at [the mirrorlist repo](https://somegit.dev/ALHP/alhp-mirrorlist).
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### 4. Modify /etc/pacman.conf
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Add the appropriate repos **above** your regular Archlinux repos.
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Example for `x86-64-v3`:
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```editorconfig
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[core-x86-64-v3]
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Include = /etc/pacman.d/alhp-mirrorlist
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[extra-x86-64-v3]
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Include = /etc/pacman.d/alhp-mirrorlist
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[core]
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Include = /etc/pacman.d/mirrorlist
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[extra]
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Include = /etc/pacman.d/mirrorlist
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# if you need [multilib] support
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[multilib-x86-64-v3]
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Include = /etc/pacman.d/alhp-mirrorlist
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[multilib]
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Include = /etc/pacman.d/mirrorlist
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```
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Replace `x86-64-v3` with the x86-64 feature level you want to enable.
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> ALHP builds for `x86-64-v2`, `x86-64-v3` and `x86-64-v4` at the moment. You can see all available
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> repositories
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> [here](https://alhp.dev/).
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### 5. Update package database and upgrade:
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```
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pacman -Suy
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```
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## FAQ
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### Remove ALHP packages
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To disable ALHP remove all *x86-64-vX* entries in `/etc/pacman.conf` and remove `alhp-keyring` and `alhp-mirrorlist`.
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After that you can refresh pacmans databases and downgrade all packages like:
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```
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pacman -Suuy
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```
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### LTO
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Enabled for all packages build after 04 Nov 2021 12:07:00
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UTC. [More details.](https://somegit.dev/ALHP/ALHP.GO/issues/52)
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LTO status is visible per package on the package status page.
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### Linux Kernel packages
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`KCFLAGS`/`KCPPFLAGS` are used to build the kernel packages with our additional flags.
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### Directly linked kernel modules
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Due to our increase in pkgrel, building the kernel packages **breaks all directly linked modules** like `nvidia`
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(not `nvidia-dkms`) or `virtualbox-host-modules-arch` (not `virtualbox-host-dkms`). **Their respective `dkms`-variant is
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not affected**. This issue is being tracked in #68, a solution is being worked on.
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### Mirrors
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You want to mirror ALHP? You are welcome to do
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so, [see alhp-mirrorlist for how to become one](https://somegit.dev/ALHP/alhp-mirrorlist#how-to-become-a-mirror).
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### What packages are built
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Packages [excluded](https://www.reddit.com/r/archlinux/comments/oflged/alhp_archlinux_recompiled_for_x8664v3_experimental/h4fkinu?utm_source=share&utm_medium=web2x&context=3)
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from building (besides all 'any' architecture packages) are being listed in issue #16.
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Also [package status page](https://status.alhp.dev) (search for `blacklisted`).
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### Why is package X not up-to-date
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Also relevant for: **I can't find package X / Application X fails to start because it links to an old/newer lib**
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ALHP build packages **after** they are released in the official Archlinux Repos (not including `[*-testing]`).
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This leads to packages being delayed if the current batch contains many packages or packages which take a while to
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build (e.g. `chromium`).
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You can always check on the progress of the current build-cycle on
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the [package status page](https://status.alhp.dev).
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Please refrain from opening issues caused by packages currently in queue/not yet build/not yet moved to the repo.
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Please keep in mind that large rebuilds such as `openssl` or `python` can take days to complete on our current build
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hardware.
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### Debug symbols
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ALHP provides a debuginfod instance under `debuginfod.alhp.dev`.
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To use it, have `debuginfod` installed on your system and add it to your `DEBUGINFOD_URLS` with:
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```bash
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echo "https://debuginfod.alhp.dev" > /etc/debuginfod/alhp.urls
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```
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### Switch between levels
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If you want to switch between levels, e.g. from `x86-64-v3` to `x86-64-v4`, you need to revert to official packages
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first, then enable your desired repos again.
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1. Comment or remove ALHP repo entries in `/etc/pacman.conf`.
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2. Downgrade packages with `pacman -Suuy`.
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3. Clear pacman's package cache with `pacman -Scc`.
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4. Uncomment/add your desired repos to `/etc/pacman.conf` and update with `pacman -Suy`.
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## Matrix
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For any non-issue questions or if you just want to chat, ALHP has a matrix
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room [here](https://matrix.to/#/#alhp:ofsg.eu) (`#alhp@ofsg.eu`). You can also find me (@idlegandalf)
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in `#archlinux:archlinux.org`.
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## Donations
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I appreciate any money you want to throw my way, but donations are strictly optional. Donations are primarily used to
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pay for server costs. Also consider [donating to the **Archlinux Team**](https://archlinux.org/donate/), without their
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work ALHP would not be possible.
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[](https://liberapay.com/anonfunc/)
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## License and Legal
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This project including all of its source files is released under the terms of the GNU General Public License version 2
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(or any later version). See [LICENSE](https://somegit.dev/ALHP/ALHP.GO/src/branch/master/LICENSE) for details.
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