Makefile

# -----------------------------------------------------------------
# Variables
# -----------------------------------------------------------------

# C++ compiler
CXX = g++

# Compiler flags
CXXFLAGS = -std=c++17 -Wall -O3

# Source file directory
SRCDIR = src

# Source files
SOURCES = $(wildcard $(SRCDIR)/*.cpp)

# Object file directory
OBJDIR = obj

# Object files (automatically generated)
OBJECTS = $(patsubst $(SRCDIR)/%.cpp, $(OBJDIR)/%.o, $(SOURCES))

# Final executable name
TARGET = main

# -----------------------------------------------------------------
# Main Rules
# -----------------------------------------------------------------

.PHONY: all
all: $(TARGET)

$(TARGET): $(OBJECTS)
	@echo "Linking..."
	@mkdir -p $(dir $@)
	$(CXX) $(OBJECTS) $(CXXFLAGS) -o $@

# -----------------------------------------------------------------
# Compilation Rule
# -----------------------------------------------------------------

# Compile .o files from .cpp files
$(OBJDIR)/%.o: $(SRCDIR)/%.cpp
	@echo "Compiling $<..."
	@mkdir -p $(dir $@)
	$(CXX) $(CXXFLAGS) -c $< -o $@

# -----------------------------------------------------------------
# Utility Rules
# -----------------------------------------------------------------

.PHONY: clean
clean:
	@echo "Cleaning up..."
	@rm -rf $(OBJDIR) $(TARGET)