SHELL := /bin/bash
.DEFAULT_GOAL := help

# Shared commands and repository paths
ROOT := $(CURDIR)
DEV_VENV ?= $(ROOT)/.venv
PYTHON ?= python3
CLANG_FORMAT ?= $(DEV_VENV)/bin/clang-format
LOCK_COMPILER ?= pip-compile
TEST_PYTHONPATH := $(ROOT)/src:$(ROOT)/src/runtime/api/python:$(ROOT)
VERSION := $(strip $(file <$(ROOT)/VERSION))

# Checkpoint conversion
DEFAULT_CHECKPOINT := $(ROOT)/downloads/checkpoints/yolo26n.pt
CHECKPOINT ?= $(DEFAULT_CHECKPOINT)
CHECKPOINT_URL := https://github.com/ultralytics/assets/releases/download/v8.4.0/yolo26n.pt
CHECKPOINT_SHA256 := 9b09cc8bf347f0fc8a5f7657480587f25db09b34bf33b0652110fb03a8ad4fef
RESOLUTION ?= 640
DEFAULT_MODEL_ROOT := $(ROOT)/dist/models
MODEL ?= $(DEFAULT_MODEL_ROOT)/yolo26n-$(RESOLUTION)
MODEL_VALIDATION ?= $(ROOT)/dist/models/validation/yolo26n-$(RESOLUTION).json

# Native runtime
RUNTIME_BUILD ?= $(ROOT)/build/runtime
RUNTIME_DIST ?= $(ROOT)/dist/runtime
DEFAULT_RUNTIME := $(RUNTIME_DIST)/lib/libarm-yolo26n.so.0
RUNTIME ?= $(DEFAULT_RUNTIME)
PACKAGE_DIST ?= $(ROOT)/dist/packages
PYTHON_API_PACKAGE := $(PACKAGE_DIST)/arm_yolo26n-$(VERSION)-py3-none-any.whl
CONVERTER_PACKAGE := $(PACKAGE_DIST)/arm_yolo26n_converter-$(VERSION)-py3-none-any.whl
RELEASE_PACKAGE := $(PACKAGE_DIST)/arm-yolo26n-$(VERSION)-rpi5-trixie-arm64.tar.gz
RELEASE_DEVELOPMENT_PACKAGE := \
	$(PACKAGE_DIST)/arm-yolo26n-$(VERSION)-rpi5-trixie-arm64-dev.tar.gz
RUNTIME_RELEASE ?= yolo26-raspberry-pi-5-v$(VERSION)
RUNTIME_ARCHIVE := $(notdir $(RELEASE_PACKAGE))
RUNTIME_REPOSITORY := arm/Optimized-Runtimes
RUNTIME_URL ?= https://github.com/$(RUNTIME_REPOSITORY)/releases/download/$(RUNTIME_RELEASE)/$(RUNTIME_ARCHIVE)
RUNTIME_DOWNLOAD := $(ROOT)/downloads/runtime/$(RUNTIME_RELEASE)/$(RUNTIME_ARCHIVE)
RUNTIME_CHECKSUM := $(RUNTIME_DOWNLOAD).sha256

# Examples
EXAMPLES_VENV ?= $(ROOT)/examples/.venv
EXAMPLES_PYTHON := $(EXAMPLES_VENV)/bin/python
DEFAULT_VIDEO := $(ROOT)/downloads/media/test-video.mp4
VIDEO ?= $(DEFAULT_VIDEO)
VIDEO_URL := https://raw.githubusercontent.com/google-ai-edge/mediapipe/0ad5a71bcdff3d756dc5b07f93765aaeb4152538/mediapipe/examples/desktop/object_detection/test_video.mp4
VIDEO_SHA256 := 710831289c00251c86eafb0b0d11cf6190fda02f95bcfaa5037511eabb5c9de8
VIDEO_OUTPUT ?= $(ROOT)/examples/video/output/detections.json
VIDEO_RENDERED ?= $(ROOT)/examples/video/output/rendered.mp4
CAMERA ?= 0
CAMERA_PREVIEW ?=
CAMERA_ARGS ?=
# The camera target stays display-independent unless the caller selects one of
# the preview backends supported by examples.picamera2.live.
ifeq ($(strip $(CAMERA_PREVIEW)),)
CAMERA_EXAMPLE := examples.picamera2.detect
else
CAMERA_EXAMPLE := examples.picamera2.live
endif

# Ultralytics benchmark
ULTRALYTICS_VENV ?= $(ROOT)/benchmarks/ultralytics/.venv
DATASET_REVISION := 97d6ea181e9dd0784db880b705e426ad23d424e1
DATASET_DIR := $(ROOT)/downloads/datasets/coco-128-by-sa-$(DATASET_REVISION)
DATASET_CONFIG := $(DATASET_DIR)/benchmark.yaml
DATA ?= $(DATASET_CONFIG)
ifeq ($(origin DATA), file)
DATA_REQUIREMENT := $(DATASET_CONFIG)
endif
SOURCE_REVISION ?= $(shell git rev-parse HEAD)
# Evidence is immutable, so each default invocation needs a fresh directory.
BENCHMARK_RUN_ID := $(shell date -u +%Y%m%dT%H%M%S%NZ)-$(shell printf '%.12s' "$(SOURCE_REVISION)")
BENCHMARK_OUTPUT ?= $(ROOT)/benchmarks/reporting/output/$(BENCHMARK_RUN_ID)

# Development checks
MODELS ?= $(ROOT)/dist/models/yolo26n-320:$(ROOT)/dist/models/yolo26n-480:$(ROOT)/dist/models/yolo26n-640:$(ROOT)/dist/models/yolo26n-800:$(ROOT)/dist/models/yolo26n-960:$(ROOT)/dist/models/yolo26n-1280
MODEL_DIRECTORIES := $(subst :, ,$(MODELS))
MODEL_ARTIFACTS := $(foreach model,$(MODEL_DIRECTORIES),\
	$(model)/manifest.json $(model)/model.bin)
# The C API test needs one valid model to create a session. The Python
# end-to-end tests exercise every model in MODELS.
NATIVE_API_TEST_MODEL = $(firstword $(MODEL_DIRECTORIES))/model.bin
COVERAGE_ROOT ?= $(ROOT)/build/coverage
COVERAGE_RUNTIME_BUILD ?= $(COVERAGE_ROOT)/runtime
COVERAGE_RUNTIME ?= $(COVERAGE_RUNTIME_BUILD)/libarm-yolo26n.so
PYTHON_COVERAGE_REPORT := $(COVERAGE_ROOT)/python/coverage.xml
NATIVE_COVERAGE_REPORT := $(COVERAGE_ROOT)/native/coverage.xml

.PHONY: help
help:
	@printf '%s\n' \
	  'YOLO26n Raspberry Pi 5 workflows:' \
	  '' \
	  'Build and conversion:' \
	  '  make model [CHECKPOINT=/path/to/yolo26n.pt] RESOLUTION=640' \
	  '      Convert a checkpoint under dist/models/. Without CHECKPOINT, download' \
	  '      and verify the pinned official YOLO26n checkpoint.' \
	  '' \
	  '  make model-check [CHECKPOINT=/path/to/yolo26n.pt] RESOLUTION=640' \
	  '      Validate conversion and write a receipt. Without CHECKPOINT, download' \
	  '      and verify the pinned official YOLO26n checkpoint.' \
	  '' \
	  '  make runtime' \
	  '      Configure, compile, test, and write the runtime to dist/runtime/.' \
	  '  make runtime-configure' \
	  '      Configure the runtime build and fetch its pinned dependencies.' \
	  '' \
	  '  make release' \
	  '      Build the runtime, converter, and Python API release packages.' \
	  '' \
	  '  make clean' \
	  '      Remove reproducible artifacts under build/ and dist/.' \
	  '' \
	  '  make requirements-lock' \
	  '      Regenerate the hash-locked Python dependency closures.' \
	  '' \
	  'Examples and benchmarks:' \
	  '  make examples' \
	  '      Install dependencies in examples/.venv and prepare a runtime and model.' \
	  '' \
	  '  make example-video' \
	  '      Write detections and a rendered MP4 under examples/video/output/.' \
	  '' \
	  '  make example-camera [CAMERA=0] [CAMERA_PREVIEW=qtgl|drm|auto]' \
	  '      Run Picamera2 detection; select CAMERA_PREVIEW for the live UI.' \
	  '' \
	  '  make ultralytics-benchmark RUNTIME=... MODEL=... DATA=...' \
	  '      Prepare a runtime, model, and Ultralytics, then run validation.' \
	  '' \
	  'Development checks:' \
	  '      The hash-locked development environment is prepared automatically.' \
	  '  make lint' \
	  '      Prepare the development environment and run repository checks.' \
	  '' \
	  '  make test-unit' \
	  '      Run unit and command-interface tests without the runtime.' \
	  '' \
	  '  make test-converter CHECKPOINT=/path/to/yolo26n.pt' \
	  '      Run checkpoint-backed converter behavior tests.' \
	  '' \
	  '  make test-end-to-end CHECKPOINT=... RUNTIME=... MODELS=/model/320:/model/480:...' \
	  '      Run converter, runtime, and example behavior tests.' \
	  '' \
	  '  make coverage CHECKPOINT=... MODELS=/model/320:/model/480:...' \
	  '      Generate diagnostic Python and native coverage reports.'

# Python dependencies
.PHONY: requirements-lock
requirements-lock:
	PIP_CONFIG_FILE=/dev/null CUSTOM_COMPILE_COMMAND='make requirements-lock' "$(LOCK_COMPILER)" \
	  --generate-hashes --allow-unsafe --strip-extras \
	  --output-file requirements.txt requirements.in
	PIP_CONFIG_FILE=/dev/null CUSTOM_COMPILE_COMMAND='make requirements-lock' "$(LOCK_COMPILER)" \
	  --generate-hashes --allow-unsafe --strip-extras \
	  --output-file requirements-build.txt requirements-build.in
	PIP_CONFIG_FILE=/dev/null CUSTOM_COMPILE_COMMAND='make requirements-lock' "$(LOCK_COMPILER)" \
	  --generate-hashes --allow-unsafe --strip-extras \
	  --output-file requirements-dev.txt requirements-dev.in
	PIP_CONFIG_FILE=/dev/null CUSTOM_COMPILE_COMMAND='make requirements-lock' "$(LOCK_COMPILER)" \
	  --generate-hashes --allow-unsafe --strip-extras \
	  --output-file requirements-lock.txt requirements-lock.in
	PIP_CONFIG_FILE=/dev/null CUSTOM_COMPILE_COMMAND='make requirements-lock' "$(LOCK_COMPILER)" \
	  --generate-hashes --allow-unsafe --strip-extras \
	  --output-file benchmarks/ultralytics/requirements.txt \
	  benchmarks/ultralytics/requirements.in

# Cleanup
.PHONY: clean
clean:
	@printf 'Removing reproducible artifacts:\n  %s\n  %s\n' "$(ROOT)/build" "$(ROOT)/dist"
	@cmake -E remove_directory "$(ROOT)/build"
	@cmake -E remove_directory "$(ROOT)/dist"

# Checkpoint conversion
.PHONY: model model-check
model: $(MODEL)/manifest.json $(MODEL)/model.bin
	@printf 'Model ready: %s\n' "$(MODEL)"

model-check: $(CHECKPOINT)
	PYTHONPATH="$(ROOT)/src" "$(PYTHON)" -m converter.validate \
	  --checkpoint "$(CHECKPOINT)" \
	  --resolution "$(RESOLUTION)" \
	  --output "$(MODEL_VALIDATION)"

# Runtime
.PHONY: runtime-configure runtime
runtime-configure:
	cmake -S src/runtime -B "$(RUNTIME_BUILD)" \
	  -DCMAKE_BUILD_TYPE=Release

runtime: runtime-configure
	cmake --build "$(RUNTIME_BUILD)" \
	  --target arm_yolo26n yolo26n_runtime_api_test --parallel
	@if test -f "$(MODEL)/model.bin"; then \
	  YOLO26N_RUNTIME_API_TEST_MODEL="$(MODEL)/model.bin" \
	    ctest --test-dir "$(RUNTIME_BUILD)" --output-on-failure; \
	else \
	  ctest --test-dir "$(RUNTIME_BUILD)" --output-on-failure; \
	fi
	cmake --install "$(RUNTIME_BUILD)" --prefix "$(RUNTIME_DIST)" --component runtime

# Release packaging
.PHONY: release
release: runtime _release-converter _release-api
	@# The runtime archive combines CMake's installed runtime with both wheels.
	@# The development archive contains CMake's header and linker name. A staging
	@# directory keeps those layouts separate and makes publication into
	@# dist/packages atomic.
	@staging="$$(mktemp -d --tmpdir="$(PACKAGE_DIST)" .release.XXXXXX)"; \
	  trap 'rm -rf -- "$$staging"' EXIT; \
	  mkdir "$$staging/runtime" "$$staging/development"; \
	  cmake --install "$(RUNTIME_BUILD)" --prefix "$$staging/runtime" \
	    --component runtime; \
	  cmake --install "$(RUNTIME_BUILD)" --prefix "$$staging/development" \
	    --component development; \
	  install --directory "$$staging/runtime/python"; \
	  install --mode 0644 "$(PYTHON_API_PACKAGE)" "$(CONVERTER_PACKAGE)" \
	    "$$staging/runtime/python/"; \
	  tar --create --gzip --file "$$staging/$(notdir $(RELEASE_PACKAGE))" \
	    --sort=name --mtime=@0 --owner=0 --group=0 --numeric-owner \
	    --directory "$$staging/runtime" lib python share; \
	  tar --create --gzip \
	    --file "$$staging/$(notdir $(RELEASE_DEVELOPMENT_PACKAGE))" \
	    --sort=name --mtime=@0 --owner=0 --group=0 --numeric-owner \
	    --directory "$$staging/development" include lib; \
	  cd "$$staging"; \
	  sha256sum "$(notdir $(RELEASE_PACKAGE))" \
	    > "$(notdir $(RELEASE_PACKAGE)).sha256"; \
	  sha256sum "$(notdir $(RELEASE_DEVELOPMENT_PACKAGE))" \
	    > "$(notdir $(RELEASE_DEVELOPMENT_PACKAGE)).sha256"; \
	  mv "$(notdir $(RELEASE_PACKAGE))" "$(notdir $(RELEASE_PACKAGE)).sha256" \
	    "$(notdir $(RELEASE_DEVELOPMENT_PACKAGE))" \
	    "$(notdir $(RELEASE_DEVELOPMENT_PACKAGE)).sha256" "$(PACKAGE_DIST)/"

# These targets build only repository source. They neither install nor resolve
# dependencies; callers provide the hash-locked build environment defined by
# requirements-build.txt. CI installs that environment with --require-hashes.
.PHONY: _release-converter
_release-converter: _dev
	mkdir -p "$(PACKAGE_DIST)"
	@# Give setuptools a self-contained project without writing build state into
	@# the converter source directory or duplicating the repository version.
	@staging="$$(mktemp -d)"; \
	  trap 'rm -rf -- "$$staging"' EXIT; \
	  cp src/converter/*.py src/converter/pyproject.toml \
	    src/converter/VERSION "$$staging/"; \
	  install --mode 0644 "$(ROOT)/../LICENSE" "$$staging/LICENSE"; \
	  PIP_CONFIG_FILE=/dev/null "$(DEV_VENV)/bin/python" -m pip wheel \
	    --no-deps --no-build-isolation --wheel-dir "$(PACKAGE_DIST)" "$$staging"

.PHONY: _release-api
_release-api: _dev
	mkdir -p "$(PACKAGE_DIST)"
	PIP_CONFIG_FILE=/dev/null "$(DEV_VENV)/bin/python" -m pip wheel \
	  --no-deps --no-build-isolation --wheel-dir "$(PACKAGE_DIST)" .

# Examples
.PHONY: examples example-video example-camera
examples: $(RUNTIME) $(MODEL)/manifest.json $(MODEL)/model.bin \
    $(EXAMPLES_VENV)/pyvenv.cfg
	@printf 'Examples ready:\n  runtime: %s\n  model: %s\n  environment: %s\n' \
	  "$(RUNTIME)" "$(MODEL)" "$(EXAMPLES_VENV)"

$(EXAMPLES_VENV)/pyvenv.cfg: requirements-build.txt requirements.txt pyproject.toml \
    $(wildcard src/runtime/api/python/arm_yolo26n/*.py)
	@# Picamera2 is installed by Raspberry Pi OS, so camera examples must see system packages.
	"$(PYTHON)" -m venv --system-site-packages "$(EXAMPLES_VENV)"
	PIP_CONFIG_FILE=/dev/null "$(EXAMPLES_PYTHON)" -m pip install --require-hashes \
	  --requirement requirements-build.txt --requirement requirements.txt
	PIP_CONFIG_FILE=/dev/null "$(EXAMPLES_PYTHON)" -m pip install \
	  --no-deps --no-build-isolation "$(ROOT)"

$(DEFAULT_CHECKPOINT):
	@printf 'No checkpoint was supplied; downloading the pinned checkpoint to:\n  %s\n' "$@"
	mkdir -p "$(@D)"
	curl --fail --location --show-error "$(CHECKPOINT_URL)" --output "$@.tmp"
	echo "$(CHECKPOINT_SHA256)  $@.tmp" | sha256sum --check
	mv "$@.tmp" "$@"

# A source build and a release download establish the same runtime path. Attach
# the download rules only when no usable source-built distribution is present.
ifneq ($(shell test -f "$(DEFAULT_RUNTIME)" && printf present),present)
# Public releases use curl without requiring GitHub tooling. The authenticated
# gh fallback keeps maintainer testing usable while the repository is internal.
$(RUNTIME_DOWNLOAD):
	mkdir -p "$(@D)"
	@printf 'Downloading runtime release asset: %s\n' "$(notdir $@)"
	@curl --fail --location --silent --show-error "$(RUNTIME_URL)" --output "$@.tmp" || { \
	  printf 'Anonymous release download unavailable; trying authenticated gh.\n'; \
	  gh release download "$(RUNTIME_RELEASE)" --repo "$(RUNTIME_REPOSITORY)" \
	    --pattern "$(notdir $@)" --output "$@.tmp" --clobber; \
	}
	mv "$@.tmp" "$@"

$(RUNTIME_CHECKSUM):
	mkdir -p "$(@D)"
	@printf 'Downloading runtime release asset: %s\n' "$(notdir $@)"
	@curl --fail --location --silent --show-error "$(RUNTIME_URL).sha256" --output "$@.tmp" || { \
	  printf 'Anonymous release download unavailable; trying authenticated gh.\n'; \
	  gh release download "$(RUNTIME_RELEASE)" --repo "$(RUNTIME_REPOSITORY)" \
	    --pattern "$(notdir $@)" --output "$@.tmp" --clobber; \
	}
	mv "$@.tmp" "$@"

$(DEFAULT_RUNTIME): $(RUNTIME_DOWNLOAD) $(RUNTIME_CHECKSUM)
	@test ! -e "$(RUNTIME_DIST)" || { \
	  printf 'runtime distribution is incomplete: %s\n' "$(RUNTIME_DIST)" >&2; exit 2; \
	}
	@cd "$(dir $(RUNTIME_DOWNLOAD))" && sha256sum --check "$(notdir $(RUNTIME_CHECKSUM))"
	@mkdir -p "$(dir $(RUNTIME_DIST))"
	@staging="$$(mktemp -d --tmpdir="$(dir $(RUNTIME_DIST))" .runtime.XXXXXX)"; \
	  trap 'rm -rf -- "$$staging"' EXIT; \
	  tar --extract --gzip --file "$(RUNTIME_DOWNLOAD)" --directory "$$staging"; \
	  test -f "$$staging/lib/libarm-yolo26n.so.0"; \
	  mv "$$staging" "$(RUNTIME_DIST)"
endif

# One converter invocation publishes these two model artifacts together.
$(MODEL)/manifest.json $(MODEL)/model.bin &: $(CHECKPOINT)
	PYTHONPATH="$(ROOT)/src" "$(PYTHON)" -m converter.export_yolo26n \
	  --checkpoint "$(CHECKPOINT)" --resolution "$(RESOLUTION)" --output-dir "$(MODEL)"

# Build missing models whose default directory names identify their resolution.
$(DEFAULT_MODEL_ROOT)/yolo26n-%/manifest.json $(DEFAULT_MODEL_ROOT)/yolo26n-%/model.bin &: $(CHECKPOINT)
	PYTHONPATH="$(ROOT)/src" "$(PYTHON)" -m converter.export_yolo26n \
	  --checkpoint "$(CHECKPOINT)" --resolution "$*" --output-dir "$(@D)"

$(DEFAULT_VIDEO):
	mkdir -p "$(@D)"
	curl --fail --location --show-error "$(VIDEO_URL)" --output "$@.tmp"
	echo "$(VIDEO_SHA256)  $@.tmp" | sha256sum --check
	mv "$@.tmp" "$@"

example-video: examples $(VIDEO)
	"$(EXAMPLES_PYTHON)" -m examples.video.detect \
	  --runtime "$(RUNTIME)" --model "$(MODEL)" --video "$(VIDEO)" \
	  --output "$(VIDEO_OUTPUT)" --frames 200
	"$(EXAMPLES_PYTHON)" -m examples.video.render \
	  --video "$(VIDEO)" --detections "$(VIDEO_OUTPUT)" --output "$(VIDEO_RENDERED)"
	@printf 'Video example complete:\n  detections: %s\n  rendered video: %s\n' \
	  "$(VIDEO_OUTPUT)" "$(VIDEO_RENDERED)"

example-camera: examples
	"$(EXAMPLES_PYTHON)" -m $(CAMERA_EXAMPLE) --runtime "$(RUNTIME)" \
	  --model "$(MODEL)" --camera "$(CAMERA)"$(if $(CAMERA_PREVIEW), --preview "$(CAMERA_PREVIEW)") $(CAMERA_ARGS)

# Ultralytics benchmark
# Recreate the benchmark environment only when one of its installed inputs
# changes. pyvenv.cfg is the completion artifact created by Python itself.
$(ULTRALYTICS_VENV)/pyvenv.cfg: benchmarks/ultralytics/patch.sh \
    benchmarks/ultralytics/requirements.txt requirements-build.txt \
    pyproject.toml VERSION \
    benchmarks/ultralytics/arm_yolo26n_pi5_backend.py \
    benchmarks/ultralytics/patches/ultralytics-8.4.108-arm-yolo26-pi5.patch \
    $(wildcard src/runtime/api/python/arm_yolo26n/*.py)
	./benchmarks/ultralytics/patch.sh "$(ULTRALYTICS_VENV)"

$(DATASET_CONFIG): benchmarks/ultralytics/download_dataset.sh
	@printf 'Downloading coco-128-by-sa dataset revision %s\n' "$(DATASET_REVISION)"
	./benchmarks/ultralytics/download_dataset.sh \
	  "$(DATASET_REVISION)" "$(DATASET_DIR)"

.PHONY: ultralytics-benchmark
ultralytics-benchmark: $(RUNTIME) $(MODEL)/manifest.json $(MODEL)/model.bin \
    $(ULTRALYTICS_VENV)/pyvenv.cfg $(DATA_REQUIREMENT)
	"$(PYTHON)" -m benchmarks.ultralytics.benchmark \
	  --runtime "$(RUNTIME)" \
	  --model "$(MODEL)" \
	  --data "$(DATA)" \
	  --venv "$(ULTRALYTICS_VENV)" \
	  --output-dir "$(BENCHMARK_OUTPUT)" \
	  --revision "$(SOURCE_REVISION)" \
	  -- $(YOLO_ARGS)

# Development checks
.PHONY: _dev lint test-unit test-converter test-end-to-end coverage
_dev: $(DEV_VENV)/pyvenv.cfg

# pyvenv.cfg is created by venv itself, so it can mark a completed environment
# without adding a repository-specific stamp file. A newer lock rebuilds it.
$(DEV_VENV)/pyvenv.cfg: requirements-dev.txt
	@cmake -E remove_directory "$(DEV_VENV)"
	python3 -m venv "$(DEV_VENV)"
	PIP_CONFIG_FILE=/dev/null "$(DEV_VENV)/bin/python" -m pip install --require-hashes \
	  --requirement requirements-dev.txt

# Development targets use the locked repository environment by default. A
# command-line PYTHON still takes precedence for CI or another managed setup.
lint test-unit test-converter test-end-to-end coverage: PYTHON := $(DEV_VENV)/bin/python

lint: _dev
	@# clang-format verifies the C and C++ source formatting.
	@find src/runtime -type f \
	  \( -name '*.c' -o -name '*.cpp' -o -name '*.h' -o -name '*.inc' \) \
	  -exec "$(CLANG_FORMAT)" --dry-run --Werror {} +
	@# Ruff's formatter verifies the Python source formatting.
	"$(PYTHON)" -m ruff format --check src/converter src/runtime/api/python/arm_yolo26n \
	  benchmarks examples tests
	@# Ruff's linter detects Python correctness, style, and import problems.
	"$(PYTHON)" -m ruff check src/converter src/runtime/api/python/arm_yolo26n \
	  benchmarks examples tests
	@# Import Linter enforces the converter's declared dependency direction.
	PYTHONPATH="$(ROOT)/src" "$(PYTHON)" -c \
	  'from importlinter.cli import lint_imports; raise SystemExit(lint_imports(no_cache=True))'
	@# Mypy checks consistency between the declared Python types and their uses.
	"$(PYTHON)" -m mypy
	@# Vulture reports Python functions, classes, and variables that are never used.
	"$(PYTHON)" -m vulture
	@# Bash parses every benchmark shell script without executing it.
	@find benchmarks/ultralytics -maxdepth 1 -type f -name '*.sh' -exec bash -n {} +
	@# Python's JSON parser verifies the checked-in JSON documents.
	@shopt -s nullglob; for document in src/converter/*.json benchmarks/reporting/*.json; do \
	  "$(PYTHON)" -m json.tool "$$document" >/dev/null; \
	done
	@# Git detects whitespace errors introduced by the current change.
	git diff --check

test-unit: _dev
	PYTHONPATH="$(TEST_PYTHONPATH)" "$(PYTHON)" -m pytest tests/unit

test-converter: _dev $(CHECKPOINT)
	PYTHONPATH="$(TEST_PYTHONPATH)" YOLO26N_CHECKPOINT="$(CHECKPOINT)" \
	  "$(PYTHON)" -m pytest tests/converter

test-end-to-end: _dev $(MODEL_ARTIFACTS) test-converter runtime
	YOLO26N_RUNTIME_API_TEST_MODEL="$(NATIVE_API_TEST_MODEL)" \
	  ctest --test-dir "$(RUNTIME_BUILD)" --output-on-failure \
	  --tests-regex '^yolo26n_runtime_api_behavior$$'
	PYTHONPATH="$(TEST_PYTHONPATH)" \
	  YOLO26N_E2E_RUNTIME="$(RUNTIME)" YOLO26N_E2E_MODELS="$(MODELS)" \
	  "$(PYTHON)" -m pytest tests/end_to_end

coverage: _dev $(CHECKPOINT) $(MODEL_ARTIFACTS)
	@# Build the runtime with coverage instrumentation and discard stale counters.
	cmake -S src/runtime -B "$(COVERAGE_RUNTIME_BUILD)" \
	  -DCMAKE_BUILD_TYPE=Debug -DYOLO26N_ENABLE_COVERAGE=ON
	cmake --build "$(COVERAGE_RUNTIME_BUILD)" \
	  --target arm_yolo26n yolo26n_runtime_api_test --parallel
	find "$(COVERAGE_RUNTIME_BUILD)/CMakeFiles/arm_yolo26n.dir" -name '*.gcda' -delete
	YOLO26N_RUNTIME_API_TEST_MODEL="$(NATIVE_API_TEST_MODEL)" \
	  ctest --test-dir "$(COVERAGE_RUNTIME_BUILD)" --output-on-failure
	@# Run the public Python behavior suites against the instrumented runtime.
	mkdir -p "$(dir $(PYTHON_COVERAGE_REPORT))" "$(dir $(NATIVE_COVERAGE_REPORT))"
	"$(PYTHON)" -m coverage erase
	PYTHONPATH="$(TEST_PYTHONPATH)" \
	  YOLO26N_CHECKPOINT="$(CHECKPOINT)" \
	  YOLO26N_E2E_RUNTIME="$(COVERAGE_RUNTIME)" \
	  YOLO26N_E2E_MODELS="$(MODELS)" \
	  "$(PYTHON)" -m coverage run -m pytest tests/unit tests/converter tests/end_to_end
	@# Write one machine-readable report for each implementation language.
	"$(PYTHON)" -m coverage combine
	"$(PYTHON)" -m coverage report
	"$(PYTHON)" -m coverage xml -o "$(PYTHON_COVERAGE_REPORT)"
	"$(PYTHON)" -m gcovr --root "$(ROOT)" --filter "$(ROOT)/src/runtime/" \
	  --exclude-unreachable-branches --exclude-throw-branches \
	  "$(COVERAGE_RUNTIME_BUILD)/CMakeFiles/arm_yolo26n.dir" \
	  --txt - --cobertura "$(NATIVE_COVERAGE_REPORT)"