Simple c++ makefile

Makefile

# Makefile

# '@' added to suppress printing commands on shell

# Variables
CXX = g++
CXXFLAGS = -O3
TARGET = main
SRC = main.cpp

# Default target
all: build run

# Build step
build: $(SRC)
	@$(CXX) $(CXXFLAGS) -o $(TARGET) $(SRC)

# Run step
run: $(TARGET)
	@./$(TARGET)

# Clean step
clean:
	@rm -f $(TARGET)