Files
onefinity-firmware/.pi/build-gplan.sh
Henrik Muehe 704bc8d35c gplan.so: build from source using Raspbian Stretch Docker
Use balenalib/raspberry-pi-debian:stretch with legacy.raspbian.org repos.
Exact match: GCC 6.3, Python 3.5, GLIBC 2.24 — identical to the Pi.
First build ~25min (QEMU), subsequent builds ~1sec (cached image).

Replaces the broken Bullseye approach that had GLIBC/GLIBCXX mismatches.
2026-04-30 16:33:20 +02:00

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#!/usr/bin/env bash
set -euo pipefail
# Build gplan.so for the Onefinity Pi (armv7l, Python 3.5, GCC 6.3)
#
# Uses a Raspbian Stretch Docker image that exactly matches the Pi's
# toolchain. No cross-compile, no relink hacks, no GLIBC mismatches.
#
# First run: ~30min (builds Docker image with cbang + camotics)
# After that: ~1sec (copies pre-built gplan.so from image)
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
IMAGE="onefin-gplan"
OUTPUT="$PROJECT_DIR/src/py/camotics/gplan.so"
# Build image if needed (one-time)
if ! docker image inspect "$IMAGE" >/dev/null 2>&1; then
echo "Building $IMAGE Docker image (one-time, ~30min under QEMU)..."
docker build -t "$IMAGE" -f "$SCRIPT_DIR/Dockerfile.gplan" "$SCRIPT_DIR"
fi
# Copy gplan.so out of the image
echo "Extracting gplan.so..."
docker run --rm -v "$PROJECT_DIR:/workspace" "$IMAGE" \
bash -c 'cp /opt/camotics/gplan.so /workspace/src/py/camotics/gplan.so && \
file /workspace/src/py/camotics/gplan.so && \
readelf -d /workspace/src/py/camotics/gplan.so | grep -E "NEEDED|python"'
echo "✓ Built: $OUTPUT"