libva-v4l2-request-fourier-debian: pin trixie libva-dev for ABI #44
@@ -971,7 +971,12 @@ jobs:
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# -------------------------------------------------------------------------
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libva-v4l2-request-fourier-debian:
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needs: libva-v4l2-request-fourier-aarch64
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runs-on: arch-aarch64
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# Native Debian trixie runner — the driver bakes __vaDriverInit_1_<MINOR>
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# at compile time from <va/va.h>. Building on Arch (libva 2.23) produced
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# __vaDriverInit_1_23, which trixie's libva 2.22 runtime cannot bind: the
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# .deb installed but vaInitialize() returned -1 on every host. A native
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# trixie runner avoids the cross-distro ABI skew entirely.
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runs-on: debian-aarch64-bohr
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continue-on-error: true
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steps:
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- uses: actions/checkout@v4
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@@ -989,9 +994,12 @@ jobs:
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run: |
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set -e
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retry() { for i in 1 2 3; do "$@" && return 0; rc=$?; echo "retry $i (exit=$rc)" >&2; sleep $((i*5)); done; return 1; }
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retry pacman -Syu --noconfirm --needed \
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dpkg openssh rsync curl base-devel git meson ninja pkgconf \
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libva libdrm systemd-libs
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export DEBIAN_FRONTEND=noninteractive
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retry apt-get update -qq
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retry apt-get install -y --no-install-recommends \
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build-essential meson ninja-build pkg-config \
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libva-dev libdrm-dev \
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curl openssh-client rsync ca-certificates git dpkg-dev
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- name: install hertz deploy ssh key
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if: steps.skip-check.outputs.skip != '1'
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+16
-46
@@ -27,47 +27,6 @@ work=$(mktemp -d)
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trap "rm -rf $work" EXIT
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cd "$work"
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# ---------------------------------------------------------------------------
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# Pin libva ABI to Debian trixie's version (libva 2.22.0 -> VA-API 1.22).
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#
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# Without this, when the CI runner is Arch (libva 2.23.0 currently) the
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# driver compiles in __vaDriverInit_1_23 from Arch's <va/va.h> — but the
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# Debian trixie libva runtime on the install target looks up
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# __vaDriverInit_1_22 and the dlsym() returns NULL. libva then reports
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# "has no function __vaDriverInit_1_0" (its fallback search name) and
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# vaInitialize() fails with -1.
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#
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# The driver itself doesn't link against libva.so — only the symbol NAME
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# matters, and the name is computed at compile time from VA_MAJOR /
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# VA_MINOR macros in <va/va.h>. So all we have to do is point pkg-config
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# at trixie's libva-dev headers; the link step still resolves -lva
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# against the runner's libva (any version is fine — it's just for the
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# linker to be happy, the result has no NEEDED entry for libva).
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# ---------------------------------------------------------------------------
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LIBVA_TRIXIE_VER="2.22.0-3"
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TRIXIE_SYSROOT="$work/trixie-sysroot"
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mkdir -p "$TRIXIE_SYSROOT"
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for pkg in libva-dev libva2 libva-drm2; do
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curl -sSLfo "$work/${pkg}.deb" \
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"https://deb.debian.org/debian/pool/main/libv/libva/${pkg}_${LIBVA_TRIXIE_VER}_arm64.deb"
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dpkg-deb -x "$work/${pkg}.deb" "$TRIXIE_SYSROOT"
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done
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# Rewrite the prefix in the .pc files so pkg-config returns -I/-L pointing
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# inside the sysroot (Debian's pkg-config files default to /usr).
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for pc in "$TRIXIE_SYSROOT"/usr/lib/aarch64-linux-gnu/pkgconfig/libva*.pc; do
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sed -i "s|^prefix=/usr|prefix=$TRIXIE_SYSROOT/usr|" "$pc"
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done
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# Symlink libva.so -> libva.so.2 inside the sysroot so the linker can
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# resolve `-lva` against trixie's shipped runtime (no -dev symlink in
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# the libva2 .deb). Same for libva-drm.
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ln -sf libva.so.2 "$TRIXIE_SYSROOT/usr/lib/aarch64-linux-gnu/libva.so"
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ln -sf libva-drm.so.2 "$TRIXIE_SYSROOT/usr/lib/aarch64-linux-gnu/libva-drm.so"
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export PKG_CONFIG_PATH="$TRIXIE_SYSROOT/usr/lib/aarch64-linux-gnu/pkgconfig:${PKG_CONFIG_PATH:-}"
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curl -sSLfo libva-fourier.tar.gz \
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"https://git.reauktion.de/marfrit/libva-v4l2-request-fourier/archive/${UPSTREAM_COMMIT}.tar.gz"
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tar xzf libva-fourier.tar.gz
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@@ -81,13 +40,24 @@ meson setup build \
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-Db_lto=false
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meson compile -C build
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# Sanity check: the produced .so MUST export __vaDriverInit_1_22 (not 1_23).
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# Fail loud if it doesn't — otherwise the .deb installs but refuses to load
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# on trixie and the bug is invisible until someone runs vainfo.
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# ---------------------------------------------------------------------------
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# ABI sanity check: the produced .so MUST export __vaDriverInit_1_<MINOR>
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# matching the install target's libva runtime. Build is expected to run on
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# a Debian trixie runner where <va/va.h>'s VA_MINOR is 22 — see
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# .gitea/workflows/build.yml (runs-on: debian-aarch64-bohr). If a future
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# runner change lands the build on a host with a different libva-dev
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# version, the produced symbol won't bind on the install target and ffmpeg/
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# vainfo/firefox-vaapi will all fail with "has no function
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# __vaDriverInit_1_0". Fail loud at build time instead of shipping a
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# silently-broken .deb (which is what happened in -1).
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# ---------------------------------------------------------------------------
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SO=$(find build -name 'v4l2_request_drv_video.so' | head -1)
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if ! nm -D --defined-only "$SO" | grep -q '__vaDriverInit_1_22'; then
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echo "FATAL: built driver does not export __vaDriverInit_1_22"
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nm -D --defined-only "$SO" | grep -i vadriverinit || true
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echo "FATAL: built driver does not export __vaDriverInit_1_22."
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echo " Build host's <va/va.h> VA_MINOR_VERSION is likely != 22."
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echo " Expected runner: debian-aarch64-bohr (trixie, libva 2.22)."
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echo " Symbol exports found:"
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nm -D --defined-only "$SO" | grep -i vadriverinit || echo " (none)"
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exit 1
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fi
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echo "ABI check: $SO exports __vaDriverInit_1_22 (matches trixie libva 2.22)"
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+14
-13
@@ -1,18 +1,19 @@
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libva-v4l2-request-fourier (1.0.0+r378+gc332d34-2) bookworm trixie; urgency=medium
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* Rebuild against pinned Debian trixie libva-dev (2.22.0-3) so the
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driver exports __vaDriverInit_1_22 — the symbol trixie's libva
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runtime looks up. Previous -1 build used the CI runner's Arch
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libva (2.23.0) and exported __vaDriverInit_1_23, which trixie's
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loader cannot bind: vaInitialize() returns -1 ("has no function
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__vaDriverInit_1_0") and ffmpeg -hwaccel vaapi fails on startup.
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* No source change; pure build-env fix. build-deb.sh now downloads
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libva-dev / libva2 / libva-drm2 from Debian's archive, extracts
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to a sysroot, and uses PKG_CONFIG_PATH to make pkg-config return
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trixie headers regardless of what's installed on the runner.
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* Hard sanity check: build fails if the resulting .so doesn't
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export __vaDriverInit_1_22 (preempts the silent install-then-
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refuse-to-load failure mode).
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* Rebuild on a native Debian trixie runner (debian-aarch64-bohr) so
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the driver picks up trixie's libva-dev (2.22) and exports
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__vaDriverInit_1_22 — the symbol trixie's libva runtime looks up.
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Previous -1 build used the Arch CI runner (libva 2.23.0) and
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exported __vaDriverInit_1_23, which trixie's loader cannot bind:
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vaInitialize() returns -1 ("has no function __vaDriverInit_1_0")
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and ffmpeg -hwaccel vaapi fails on startup.
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* No source change; pure build-env fix. CI workflow's
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libva-v4l2-request-fourier-debian job moved from runs-on:
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arch-aarch64 to runs-on: debian-aarch64-bohr; build-deps installed
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via apt-get instead of pacman.
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* Hard sanity check kept in build-deb.sh: build fails if the
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resulting .so doesn't export __vaDriverInit_1_22 (preempts the
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silent install-then-refuse-to-load failure mode).
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-- Markus Fritsche <mfritsche@reauktion.de> Wed, 20 May 2026 18:00:00 +0000
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