Makefile

# cpp-ml-systems — convenience wrapper around CMake/CTest.
# `make help` lists every target.

BUILD_DIR       ?= build
BUILD_DEBUG_DIR ?= build_debug
JOBS            ?= $(shell nproc 2>/dev/null || echo 4)

.PHONY: build debug test bench clean install-deps format help

build: ## Configure + build the Release tree in ./build
	cmake -B $(BUILD_DIR) -DCMAKE_BUILD_TYPE=Release
	cmake --build $(BUILD_DIR) -j$(JOBS)

debug: ## Configure + build a Debug tree (asserts + symbols) in ./build_debug
	cmake -B $(BUILD_DEBUG_DIR) -DCMAKE_BUILD_TYPE=Debug
	cmake --build $(BUILD_DEBUG_DIR) -j$(JOBS)

test: build ## Run the full GoogleTest suite via CTest
	cd $(BUILD_DIR) && ctest --output-on-failure

bench: build ## Build then run all benchmarks
	./scripts/run_benchmarks.sh $(BUILD_DIR)

clean: ## Remove all build trees
	rm -rf $(BUILD_DIR) $(BUILD_DEBUG_DIR)

install-deps: ## Install toolchain + GoogleTest (Ubuntu/Debian; see comment for macOS)
	sudo apt-get update && sudo apt-get install -y cmake g++ libgtest-dev
	# macOS:   brew install cmake googletest

format: ## clang-format every source file in place
	find src include tests benchmarks \( -name '*.cpp' -o -name '*.hpp' \) -print0 \
		| xargs -0 clang-format -i

help: ## Show this help
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) \
		| awk 'BEGIN{FS=":.*?## "}{printf "  \033[36m%-14s\033[0m %s\n", $$1, $$2}'