Makefile Generation

GNU Make build configuration.

Quick Start

CC = gcc
CFLAGS = -Wall -O2
TARGET = myapp
SRCS = main.c utils.c
OBJS = $(SRCS:.c=.o)

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

%.o: %.c
	$(CC) $(CFLAGS) -c -o $@ $<

clean:
	rm -f $(TARGET) $(OBJS)

.PHONY: clean

Key Patterns

# Variables
BUILD_DIR ?= build
PREFIX ?= /usr/local

# Automatic variables
# $@ - target name
# $< - first prerequisite
# $^ - all prerequisites

# Conditional
ifdef DEBUG
    CFLAGS += -g -DDEBUG
endif

# Platform detection
UNAME := $(shell uname)
ifeq ($(UNAME), Linux)
    LDFLAGS += -lpthread
endif

# Install target
install: $(TARGET)
	install -d $(DESTDIR)$(PREFIX)/bin
	install -m 755 $(TARGET) $(DESTDIR)$(PREFIX)/bin