4 Commits

Author	SHA1	Message	Date
test0r	7bb2fbeca9	chromium-fourier: pivot to x86_64 cross-compile from CT220 on data ... Earlier framing was wrong — the wall isn't 'Arch ARM clang 22 vs Arch x86_64 clang 23'. Arch x86_64 is also on 22.1.3; LLVM 23 isn't anywhere in extra/staging. The flags chromium 147 emits come from chromium's clang fork (Google maintains an LLVM fork with chromium-specific passes), not upstream LLVM 23. PKGBUILD'ing clang 23 is the wrong tree. Right tree: cross-compile from x86_64 so chromium's bundled clang prebuilt is reachable. CIPD has full linux-amd64 prebuilts, gclient sync works cleanly, no qemu-x86_64-static dance needed. his provisioned CT 220 chromium-builder-x86 on data (Ryzen 7 1700, 14 cores, 32 GiB RAM, 200 GiB ZFS). data is normally asleep — woke via /opt/herding/bin/wake-data. Reach pattern: hertz -> ssh data -> pct exec 220. Source fetch running as chromium-fetch.service transient unit on CT 220. Once src is in, plan: tools/clang/scripts/update.py for chromium's bundled clang + arm64 sysroot, gn gen with target_cpu=arm64, build, transfer aarch64 binary to ohm/fresnel/ampere. boltzmann chromium-builder LXD container preserved as fallback; can be torn down if cross-compile pans out. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-26 05:57:14 +00:00
test0r	f3a7b8f1c1	chromium-fourier NEXT.md: hit the clang 22 vs 147 wall ... First-build summary on chromium-builder@boltzmann. gn gen succeeds with our V4L2VDA-unlock args. ninja fails immediately on: 1. chromium 147 emits clang flags (-fno-lifetime-dse, -fsanitize-ignore-for-ubsan-feature=array-bounds) that clang 22 doesn't know. Arch Linux ARM is on clang 22; clang 23 hasn't landed in extra yet. 2. Bundled x86_64 esbuild is invoked via qemu-x86_64-static but /lib64/ld-linux-x86-64.so.2 isn't installed — same shape as the bundled node-linux-x64 issue we already fixed by symlinking to system node. Smaller wall. Documents 5 paths forward (grind patches / pin chromium 132 (7Ji's known-good) / pin 138-141 middle ground / use chromium's bundled clang / wait for Arch ARM clang 23) with estimated effort and trade- offs. Recommends pinning to a chromium version that compiles clean against clang 22 as the fastest path to a working browser, then bumping as Arch ARM bumps clang. Build host state preserved — container running, source extracted, gn-gen'd, no compile artifacts. Easy to resume from any of the five paths. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-26 01:02:24 +00:00
test0r	055fc0ba06	arch/chromium-fourier: scaffold PKGBUILD + placeholder patch ... Initial chromium-fourier shape on the chromium-builder@boltzmann LXD container we provisioned today. Approach is the 7Ji-style "tarball + system tools" pattern (no gclient/CIPD, the linux-arm64 dependency binaries don't exist anyway) but stripped of the MPP/X11/panfork specifics — chromium-fourier targets mainline kernel + Wayland + panfrost/panthor + V4L2 stateless on /dev/video0, not the vendor stack 7Ji's chromium-mpp targets. PKGBUILD highlights: - pkgver=147.0.7727.116 (current Chrome stable as of 2026-04-25) - gn args: use_v4l2_codec=true, use_v4lplugin=true, use_linux_v4l2_only=true, use_vaapi=true. The first three are the magic that unlocks V4L2VDA on Linux non-ChromeOS without source patches; if they're sufficient on their own, the chromeos-pipeline-bypass patch stays a no-op. - ffmpeg_branding="Chrome" + proprietary_codecs=true for H.264. - enable_widevine=false, enable_nacl=false to keep the tree small. - Currently development-shaped: prepare()/build() operate on a pre-extracted /build/chromium/src rather than makepkg-fetched source. Will switch to canonical source=(...tarball.xz) shape once the patches stabilise. patches/chromeos-pipeline-bypass.patch is a placeholder; the actual patch (if any) gets developed once we see what 7Ji's gn args do or don't unlock for us. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-25 23:28:12 +00:00
test0r	f4bdd54543	arch/chromium-fourier: workspace + STUDY.md (no PKGBUILD yet) ... Stage the next side-project: patch upstream Chromium to do HW video decode through VaapiVideoDecoder + our marfrit/libva-v4l2-request-fourier backend on a mainline Linux Wayland system, instead of going through the chromeos pipeline that fails on Brave today. STUDY.md captures: - The exact failure stack we're fixing (PickDecoderOutputFormat -> ImageProcessor init failure in media/gpu/chromeos/video_decoder_pipeline.cc) - Three candidate patches (chromeos pipeline bypass, V4L2VideoDecoder factory un-gate, libva backend default) - Reference forks (JeffyCN, igel-oss, 7Ji-PKGBUILDs/chromium-mpp, amazingfate/chromium-debian-build) — all use the older V4L2VDA path with vendor MPP, not VAAPI; useful for PKGBUILD shape and factory-un-gating patterns but not directly applicable - Build plan on fermi (depot_tools, ~30 GB fetch, 6-10 h initial build, distcc-avahi acceleration through CT108 + tesla) - Phase order — workspace done now, build env next session, patches after that, package after that, brave-fourier rebase last No PKGBUILD added yet; one will land when there's something to actually package. Build artifacts intentionally not in repo (chromium tree is ~100 GB). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-25 22:51:01 +00:00