Makefile

# Fixed-Point Fundamentals
# Build all lessons and run tests

CC = gcc
CFLAGS = -std=c99 -Wall -Wextra -Wpedantic -Werror -Wshadow -Wconversion
CFLAGS += -O2 -g

# Lesson directories
LESSONS = 00-why-not-floating-point \
          01-fixed-point-fundamentals \
          02-arithmetic-operations \
          03-overflow-and-saturation \
          04-rounding-strategies \
          05-conversion \
          06-practical-patterns

.PHONY: all clean test help

all: build

build:
	@echo "Building all lessons..."
	@for lesson in $(LESSONS); do \
		if [ -d "lessons/$$lesson/src" ] && [ -n "$$(ls -A lessons/$$lesson/src/*.c 2>/dev/null)" ]; then \
			echo "  Building $$lesson..."; \
			$(CC) $(CFLAGS) -I lessons/$$lesson/src \
				lessons/$$lesson/src/*.c \
				-o lessons/$$lesson/$$lesson 2>/dev/null || true; \
		fi \
	done
	@echo "Done."

test:
	@echo "Running all tests..."
	@for lesson in $(LESSONS); do \
		if [ -d "lessons/$$lesson/src/tests" ] && [ -n "$$(ls -A lessons/$$lesson/src/tests/*.c 2>/dev/null)" ]; then \
			echo "  Testing $$lesson..."; \
			$(CC) $(CFLAGS) -I lessons/$$lesson/src \
				lessons/$$lesson/src/*.c \
				lessons/$$lesson/src/tests/*.c \
				-o lessons/$$lesson/test_$$lesson 2>/dev/null && \
				./lessons/$$lesson/test_$$lesson || true; \
		fi \
	done
	@echo "Done."

examples:
	@echo "Building examples..."
	@for lesson in $(LESSONS) 07-when-to-use-what; do \
		if [ -d "lessons/$$lesson/examples" ] && [ -n "$$(ls -A lessons/$$lesson/examples/*.c 2>/dev/null)" ]; then \
			echo "  Building $$lesson examples..."; \
			for ex in lessons/$$lesson/examples/*.c; do \
				name=$$(basename $$ex .c); \
				$(CC) $(CFLAGS) $$ex -o lessons/$$lesson/examples/$$name 2>/dev/null || true; \
			done \
		fi \
	done
	@echo "Done."

clean:
	@echo "Cleaning..."
	@find lessons -type f -perm +111 -delete 2>/dev/null || \
		find lessons -type f -executable -delete 2>/dev/null || true
	@echo "Done."

help:
	@echo "Fixed-Point Fundamentals"
	@echo ""
	@echo "Targets:"
	@echo "  all       Build all lesson source files"
	@echo "  test      Run all tests"
	@echo "  examples  Build all examples"
	@echo "  clean     Remove built files"
	@echo "  help      Show this message"