tools: add build-auxkc-desktop.sh
Build the A16 desktop AuxKC from this checkout: AdrenoX2 with SnapAdreno's PROFILE=desktop (KEXT_PROFILE=desktop-nocoherent for a monitor without --gpu-coherent) and SnapI2CHID with its desktop profile, then link them the way the deployed collections were linked: tools/build-auxkc-user.py, tools/auxkc-autoload.py (both bundles, packaging.json) and build/build-auxkc.py pin for the installed desktop guest profile. It writes build/current-assets/NAME/ (refusing an existing one), records the source revisions and per-unit define sets beside the collection, prints every output's sha256 and the two installed_fresh.py lines that pin it, and with REFERENCE compares both kexts section for section with a deployed collection's. ZERO_AR_DATE=1 is exported unless set, so two builds in one checkout give the same kext bytes. A collection built elsewhere still differs from a deployed one in the kexts' UUIDs and what derives from them (the collection UUID, the receipt's per-kext hashes and the prelink info's UUID strings). Checked in a copy of this branch with the J700 downloads: with SnapAdreno at its profiles commit, desktop and desktop-nocoherent give AdrenoX2 12 of 12 sections equal to c66edb6b and 981e0b88 and SnapI2CHID 12 of 12 equal to d90e0199; the collections are the size of bd057773 and 43bed810 and differ only in those UUID-derived bytes.
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#!/bin/bash
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# SPDX-License-Identifier: MIT
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# Build the A16 desktop AuxKC from this checkout: AdrenoX2 (SnapAdreno, PROFILE=desktop unless KEXT_PROFILE says
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# otherwise) and SnapI2CHID (PROFILE=desktop), linked the way the deployed desktop collections were:
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# 1. tools/build-auxkc-user.py kmutil links both kexts against the J700 kernelcache and the KDK
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# 2. tools/auxkc-autoload.py marks both bundles to autoload and writes packaging.json
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# 3. build/build-auxkc.py pin admits the collection for the installed desktop guest profile (<kc>.json)
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# then prints every output's sha256 and the two tools/cycle_lib/installed_fresh.py lines that pin the collection.
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#
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# tools/build-auxkc-desktop.sh NAME
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# NAME the collection's folder, build/current-assets/NAME/ (must not exist)
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# Environment:
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# KEXT_PROFILE SnapAdreno profile (gpu/adreno-kext/kext/profiles/), default desktop; desktop-nocoherent for a
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# monitor without --gpu-coherent
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# REFERENCE optional folder holding AdrenoX2.kext and SnapI2CHID.kext to compare with, section by section
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# (tools/macho-sections.py): for example a deployed collection's folder
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# ZERO_AR_DATE exported as 1 unless set: object times in the kexts' debug maps are zeroed, so two builds in the
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# same checkout produce the same kext bytes
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#
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# Local inputs, never committed: gpu/adreno-kext/kext/include/*26A428.h (AGENTS.md, "Rebuilding What Is Not
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# Distributed"), downloads/extracted/j700ap (the J700 restore-image kernelcache), the KDK at
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# /Library/Developer/KDKs/KDK_27.0_26A428.kdk, and GNU tar at /opt/homebrew/bin/gtar (build-auxkc-user.py runs it
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# under sudo for temporary root-owned kext copies only; sudo asks for a password unless one is cached or allowed).
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# The kexts are built under build/auxkc-desktop-NAME/ and copied into the collection's folder.
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set -euo pipefail
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R=$(cd "$(dirname "$0")/.." && pwd)
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NAME=${1:?usage: tools/build-auxkc-desktop.sh NAME}
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case "$NAME" in */*|.*|'') echo "error: NAME is a folder name under build/current-assets" >&2; exit 2;; esac
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KEXT_PROFILE=${KEXT_PROFILE:-desktop}
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export ZERO_AR_DATE=${ZERO_AR_DATE:-1}
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export PYTHONDONTWRITEBYTECODE=1
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DEST=$R/build/current-assets/$NAME
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WORK=$R/build/auxkc-desktop-$NAME
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GUEST_PROFILE=j700ap-26A428-xars-uniform-auxkc-installed-adreno-metal-display-sks
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BUNDLES=(--bundle org.snapintosh.driver.AdrenoX2 --bundle org.snapintosh.driver.SnapI2CHID)
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[ ! -e "$DEST" ] || { echo "error: $DEST exists; a collection is built once" >&2; exit 2; }
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rm -rf "$WORK"; mkdir -p "$WORK"
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OUT=$WORK/adrenox2 PROFILE=$KEXT_PROFILE sh "$R/gpu/adreno-kext/kext/build.sh" > "$WORK/adrenox2.log" 2>&1 ||
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{ tail -20 "$WORK/adrenox2.log" >&2; exit 1; }
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OUT=$WORK/snapi2chid PROFILE=desktop sh "$R/drivers/snap-i2c-hid/build.sh" > "$WORK/snapi2chid.log" 2>&1 ||
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{ tail -20 "$WORK/snapi2chid.log" >&2; exit 1; }
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mkdir -p "$DEST"
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cp -Rp "$WORK/adrenox2/AdrenoX2.kext" "$DEST/AdrenoX2.kext"
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cp -Rp "$WORK/snapi2chid/SnapI2CHID.kext" "$DEST/SnapI2CHID.kext"
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cp "$WORK/adrenox2/DEFINES.txt" "$DEST/AdrenoX2-DEFINES.txt"
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cp "$WORK/snapi2chid/DEFINES.txt" "$DEST/SnapI2CHID-DEFINES.txt"
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{ # which sources: the umbrella and both submodules, with uncommitted changes flagged
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for d in . gpu/adreno-kext/kext drivers/snap-i2c-hid; do
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printf '%s %s%s\n' "$d" "$(git -C "$R/$d" rev-parse HEAD)" \
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"$(git -C "$R/$d" diff --quiet HEAD -- && echo '' || echo ' (uncommitted changes)')"
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done
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echo "AdrenoX2 profile $KEXT_PROFILE, SnapI2CHID profile desktop, ZERO_AR_DATE=$ZERO_AR_DATE"
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} > "$DEST/sources.txt"
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cd "$R"
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python3 tools/build-auxkc-user.py "$DEST/adreno-input.raw.kc" "$DEST/AdrenoX2.kext" "$DEST/SnapI2CHID.kext"
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RAW=$(shasum -a 256 "$DEST/adreno-input.raw.kc" | cut -d' ' -f1)
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python3 tools/auxkc-autoload.py "$DEST/adreno-input.raw.kc" "$DEST/adreno-input.kc" --expected-sha256 "$RAW" \
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"${BUNDLES[@]}" --record "$DEST/packaging.json"
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python3 build/build-auxkc.py pin --kc "$DEST/adreno-input.kc" --guest-profile "$GUEST_PROFILE" "${BUNDLES[@]}"
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shasum -a 256 "$DEST/adreno-input.kc" "$DEST/adreno-input.raw.kc" "$DEST/adreno-input.kc.json" \
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"$DEST/AdrenoX2.kext/Contents/MacOS/AdrenoX2" "$DEST/SnapI2CHID.kext/Contents/MacOS/SnapI2CHID"
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status=0
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if [ -n "${REFERENCE:-}" ]; then
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for b in AdrenoX2.kext/Contents/MacOS/AdrenoX2 SnapI2CHID.kext/Contents/MacOS/SnapI2CHID; do
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echo "== $b against $REFERENCE"
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python3 "$R/tools/macho-sections.py" "$REFERENCE/$b" "$DEST/$b" | tee "$WORK/compare.txt"
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tail -1 "$WORK/compare.txt" | grep -q '^\([0-9]*\) of \1 sections identical' || status=1
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done
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fi
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KC_SHA=$(shasum -a 256 "$DEST/adreno-input.kc" | cut -d' ' -f1)
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echo "tools/cycle_lib/installed_fresh.py pin lines:"
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echo "INPUT_AUXKC_PTP_DARTPOOL_RESIDENT_BEAM_VA_WIDE_LATCH = 'build/current-assets/$NAME/adreno-input.kc'"
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echo "INPUT_AUXKC_PTP_DARTPOOL_RESIDENT_BEAM_VA_WIDE_LATCH_SHA = '$KC_SHA'"
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exit $status
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