215 строки
8.6 KiB
Bash
215 строки
8.6 KiB
Bash
#!/usr/bin/env bash
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###############################################################################
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# build-mesa.sh
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#
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# Builda Mesa dal tag ufficiale mesa-26.2.0-rc3, che include il fix subgroup Freedreno (commit 185c89084ab7)
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# Produce pacchetti .deb pronti da installare, salvati in ./deb/
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#
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# Uso:
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# ./build-mesa.sh # clona il tag mesa-26.2.0-rc3 in /tmp e builda
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# ./build-mesa.sh /path/gia/clonato # usa un checkout gia' esistente
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# ./build-mesa.sh <url-alternativo> # clona un repo/fork diverso, se serve
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###############################################################################
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set -euo pipefail
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echo "=== Installazione dipendenze di build (primo step) ==="
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sudo apt-get update
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sudo apt-get build-dep -y mesa || {
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echo "build-dep su pacchetto 'mesa' fallito o non disponibile, installo un set minimo esplicito."
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sudo apt-get install -y \
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git meson ninja-build pkg-config pkgconf python3 python3-mako python3-pip \
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python3-ply python3-pycparser python3-yaml python3-setuptools \
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libdrm-dev libx11-dev libx11-xcb-dev libxext-dev libxfixes-dev libxcb1-dev \
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libxcb-glx0-dev libxxf86vm-dev libxrandr-dev libwayland-dev \
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libwayland-egl-backend-dev libxcb-randr0-dev libxcb-shm0-dev \
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libxcb-dri2-0-dev libxcb-dri3-dev libxcb-present-dev \
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libxcb-sync-dev libxcb-xfixes0-dev libxshmfence-dev \
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x11proto-dev linux-libc-dev libsensors-dev \
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libva-dev libvdpau-dev libvulkan-dev libglvnd-core-dev \
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wayland-protocols llvm-dev llvm-19-dev clang \
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libclang-19-dev libclang-cpp19-dev libclc-19-dev libclc-19 \
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spirv-tools glslang-tools llvm-spirv-19 libllvmspirvlib-19-dev \
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flatbuffers-compiler libflatbuffers-dev libxtensor-dev \
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byacc bison flex zlib1g-dev libelf-dev libzstd-dev libexpat1-dev \
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rustc cargo rustfmt bindgen cbindgen \
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librust-paste-dev librust-syn-dev \
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valgrind dpkg-dev debhelper devscripts
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}
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echo
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UPSTREAM_URL="https://gitlab.freedesktop.org/mesa/mesa.git"
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MESA_TAG="mesa-26.2.0-rc3"
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ARG="${1:-}"
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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DEB_OUT_DIR="${SCRIPT_DIR}/deb"
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# Determina se l'argomento e' un path esistente o un URL alternativo da clonare
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if [ -n "${ARG}" ] && [ -d "${ARG}/.git" ]; then
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MESA_SRC="${ARG}"
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echo "=== Uso checkout gia' esistente: ${MESA_SRC} ==="
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elif [ -n "${ARG}" ]; then
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# argomento passato ma non e' una dir .git valida: trattalo come URL alternativo
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CLONE_URL="${ARG}"
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else
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CLONE_URL="${UPSTREAM_URL}"
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fi
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if [ -z "${MESA_SRC:-}" ]; then
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CLONE_DIR="/tmp/mesa-src"
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if [ -d "${CLONE_DIR}/.git" ]; then
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EXISTING_URL="$(git -C "${CLONE_DIR}" remote get-url origin 2>/dev/null || echo "")"
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if [ "${EXISTING_URL}" = "${CLONE_URL}" ]; then
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echo "=== Checkout gia' presente in ${CLONE_DIR}, allineo al tag ${MESA_TAG} ==="
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git -C "${CLONE_DIR}" fetch origin "tag" "${MESA_TAG}"
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git -C "${CLONE_DIR}" checkout --detach "${MESA_TAG}"
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else
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echo "=== ${CLONE_DIR} esiste ma punta a un remote diverso, rifaccio il clone ==="
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rm -rf "${CLONE_DIR}"
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git clone --filter=blob:none --branch "${MESA_TAG}" "${CLONE_URL}" "${CLONE_DIR}"
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fi
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else
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echo "=== Clono ${CLONE_URL} in ${CLONE_DIR} (partial clone, filter=blob:none, tag ${MESA_TAG}) ==="
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git clone --filter=blob:none --branch "${MESA_TAG}" "${CLONE_URL}" "${CLONE_DIR}"
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fi
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MESA_SRC="${CLONE_DIR}"
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fi
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BUILD_DIR="${MESA_SRC}/build-deb"
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LOG_FILE="/tmp/build-mesa-$(date +%Y%m%d-%H%M%S).log"
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echo "=== build-mesa.sh ==="
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echo "Sorgente Mesa: ${MESA_SRC}"
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echo "Output .deb: ${DEB_OUT_DIR}"
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echo "Build dir: ${BUILD_DIR}"
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echo "Log: ${LOG_FILE}"
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echo
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echo "=== Verifica commit fix subgroup presente ==="
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mkdir -p "${DEB_OUT_DIR}"
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cd "${MESA_SRC}"
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SUBGROUP_COMMIT="185c89084ab7a84722b75af6a6026b56945ed44e"
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if git merge-base --is-ancestor "${SUBGROUP_COMMIT}" HEAD 2>/dev/null; then
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echo "OK: commit fix subgroup trovato nella history di ${MESA_TAG}."
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else
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echo "ATTENZIONE: non trovo il commit atteso nella history di questo checkout." >&2
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echo "Verifica di essere sul tag/commit giusto prima di continuare." >&2
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read -p "Continuare comunque? [y/N] " -n 1 -r
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echo
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[[ $REPLY =~ ^[Yy]$ ]] || exit 1
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fi
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echo
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echo "=== Build Mesa (meson/ninja) ==="
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rm -rf "${BUILD_DIR}"
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meson setup "${BUILD_DIR}" "${MESA_SRC}" \
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-Dprefix=/usr \
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-Dsysconfdir=/etc \
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-Dgallium-drivers=freedreno \
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-Dvulkan-drivers=freedreno \
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-Dgallium-rusticl=true \
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-Dgallium-rusticl-enable-drivers=freedreno \
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-Dbuildtype=release \
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2>&1 | tee -a "${LOG_FILE}"
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ninja -C "${BUILD_DIR}" 2>&1 | tee -a "${LOG_FILE}"
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echo
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echo "=== Packaging .deb ==="
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# Se il repo ha tooling Debian (cartella debian/), usalo.
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if [ -d "${MESA_SRC}/debian" ]; then
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echo "Trovata cartella debian/, uso dpkg-buildpackage."
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cd "${MESA_SRC}"
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dpkg-buildpackage -us -uc -b 2>&1 | tee -a "${LOG_FILE}"
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# dpkg-buildpackage mette i risultati nella dir padre di MESA_SRC
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find "$(dirname "${MESA_SRC}")" -maxdepth 1 -name "*.deb" -newer "${LOG_FILE}" \
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-exec cp -v {} "${DEB_OUT_DIR}/" \;
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else
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echo "Nessuna cartella debian/ trovata: creo un pacchetto .deb minimale"
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echo "con i soli file installati dalla build (DESTDIR + fpm/dpkg-deb)."
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DESTDIR="${BUILD_DIR}/install-root"
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rm -rf "${DESTDIR}"
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DESTDIR="${DESTDIR}" ninja -C "${BUILD_DIR}" install 2>&1 | tee -a "${LOG_FILE}"
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PKG_ROOT="${BUILD_DIR}/deb-pkg"
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PKG_NAME="mesa-freedreno-subgroups"
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PKG_VERSION="26.2.0~rc3+subgroups1"
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PKG_ARCH="arm64"
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PKG_DIR="${PKG_ROOT}/${PKG_NAME}_${PKG_VERSION}_${PKG_ARCH}"
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rm -rf "${PKG_ROOT}"
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mkdir -p "${PKG_DIR}/DEBIAN"
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cp -a "${DESTDIR}/usr" "${PKG_DIR}/"
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[ -d "${DESTDIR}/etc" ] && cp -a "${DESTDIR}/etc" "${PKG_DIR}/"
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cat > "${PKG_DIR}/DEBIAN/control" << EOF
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Package: ${PKG_NAME}
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Version: ${PKG_VERSION}
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Section: libs
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Priority: optional
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Architecture: ${PKG_ARCH}
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Maintainer: local-build
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Description: Mesa 26.2.0-rc3 build with Freedreno subgroup support
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Build locale del tag ufficiale upstream mesa-26.2.0-rc3 (commit 185c89084ab7
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"freedreno/a6xx: Expose subgroup ops", non ancora presente in alcuna
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release stabile 26.1.x ne' nei repo delle distro, disponibile a partire
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dalla serie 26.2).
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.
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Include anche il driver Vulkan Turnip per Freedreno (-Dvulkan-drivers=
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freedreno), buildato dallo stesso checkout upstream cosi' da restare
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alla stessa versione/patchset del resto dello stack (GL/EGL/GBM/rusticl).
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.
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Sostituisce i file installati da mesa-libgallium / mesa-opencl-icd /
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mesa-vulkan-drivers della distro con la build 26.2.0-rc3.
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EOF
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cat > "${PKG_DIR}/DEBIAN/README-patch.md" << 'EOF'
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# Nota sul fix incluso
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Commit: 185c89084ab7 "freedreno/a6xx: Expose subgroup ops"
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Autore: upstream Mesa (author date 2026-02-11, committer/merge date 2026-05-18)
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Motivo assenza nei repo delle distro: il branch stabile 26.1 e' stato
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diramato da main il 2026-04-14 (tag mesa-26.1.0 il 2026-05-06), quindi
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questo fix e' arrivato su main DOPO la diramazione. Essendo una feature (non
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un bugfix), non e' stato backportato al branch 26.1.x per policy standard di
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Mesa. Il fix e' incluso a partire dal tag ufficiale mesa-26.2.0-rc3, ancora
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troppo recente per essere presente nei repository delle distro (es. Ubuntu
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26.04 pacchetta Mesa 26.0.8).
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Verificato (vedi indagine precedente):
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- Nessuna dipendenza da ioctl/kernel driver msm: i campi
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shader_subgroup_supported_features / max_subgroups / subgroup_sizes sono
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popolati da tabelle statiche compilate (freedreno_devices.py).
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- Nessuna condizione che esclude a690 (FD690 e' CHIP.A6XX).
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- Nessun commit successivo modifica subgroup/ballot/shuffle in freedreno tra
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questo fix e HEAD: e' completo e autosufficiente, non un WIP parziale.
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Questo pacchetto installa i file prodotti da una build meson/ninja pulita
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del tag mesa-26.2.0-rc3, con gallium-drivers=freedreno, vulkan-drivers=
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freedreno (Turnip) e rusticl abilitato per freedreno.
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Nota: il pacchetto include il driver ICD Vulkan (libvulkan_freedreno.so +
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freedreno_icd.json) ma NON il Vulkan loader (libvulkan.so.1), che resta
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il pacchetto standard "libvulkan1" installato separatamente nel
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Containerfile.
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EOF
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dpkg-deb --build --root-owner-group "${PKG_DIR}" "${DEB_OUT_DIR}/${PKG_NAME}_${PKG_VERSION}_${PKG_ARCH}.deb"
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fi
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echo
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echo "=== Contenuto pacchetto/i .deb prodotti ==="
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for deb in "${DEB_OUT_DIR}"/*.deb; do
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[ -e "${deb}" ] || continue
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echo "--- ${deb} ---"
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dpkg -c "${deb}"
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echo
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done
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echo "=== Fatto ==="
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echo "Pacchetti .deb disponibili in: ${DEB_OUT_DIR}"
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echo "Log completo: ${LOG_FILE}"
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