Makefile

# PL/0 Compiler Makefile
# 
# Build system for PL/0 educational compiler.
# All safety flags enabled for robust code generation.

# Compiler and flags
CC      = gcc
CFLAGS  = -std=c99 -pedantic -Wall -Wextra -Werror \
          -Wno-unused-parameter \
          -ftrapv \
          -fstack-protector-all \
          -D_POSIX_C_SOURCE=200809L \
          -O2

# Target executable
TARGET  = pl0c

# Source files (all in root folder)
SRCS    = main.c lexer.c parser.c symbol.c vm.c
OBJS    = $(SRCS:.c=.o)

# Default target
all: $(TARGET)

# Link executable
$(TARGET): $(OBJS)
	$(CC) $(CFLAGS) -o $@ $^

# Compile source files
%.o: %.c pl0.h
	$(CC) $(CFLAGS) -c -o $@ $<

# Clean build artifacts
clean:
	rm -f $(OBJS) $(TARGET)

# Run tests with example programs
test: all
	@echo "Running PL/0 examples..."
	@echo "=== Factorial ==="
	@./$(TARGET) examples/factorial.pl0
	@echo "=== Primes ==="  
	@./$(TARGET) examples/primes.pl0
	@echo "=== Fibonacci ==="
	@./$(TARGET) examples/fibonacci.pl0

# Debug build with symbols
debug: CFLAGS += -g -DDEBUG
debug: clean $(TARGET)

# Format source code
format:
	clang-format -i -style=file $(SRCS) pl0.h

# Show help
help:
	@echo "PL/0 Compiler Makefile"
	@echo ""
	@echo "Targets:"
	@echo "  all     - Build the compiler (default)"
	@echo "  clean   - Remove build artifacts"
	@echo "  test    - Run example programs"
	@echo "  format  - Format source code with clang-format"
	@echo "  debug   - Build with debug symbols"
	@echo "  help    - Show this help"

.PHONY: all clean test format debug help