Yocto开发笔记之《Makefile编写》（QQ交流群：519230208）

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automake和autoconf 生成大型项目的makefile编写
http://blog.****.net/fuli1215/article/details/6399175

使用GNU Autoconf/Automake创建Makefile 
http://blog.****.net/exbob/article/details/6998430

Makefile.am

bin_PROGRAMS = bterminal sample_nmea

bterminal_SOURCES = bterminal.c ble_serial.c
bterminal_LDADD=../libs/libnmea.a

sample_nmea_SOURCES = sample_nmea.c
sample_nmea_LDADD=../libs/libnmea.a

INCLUDES= -I../include

AM_CFLAGS = @bterminal_CFLAGS@
AM_LDFLAGS = @bterminal_LIBS@

CLEANFILES = *~ 

linux编程一定要会写makefile，否则工程不能织成网，每个文件只能单兵作战

红色标记部分需要认真理解

CC = gcc 

#CC=arm-poky-linux-gnueabi-gcc --sysroot=/home/summer/test-yocto/qemuarm
#LD=arm-poky-linux-gnueabi-ld --sysroot=/home/summer/test-yocto/qemuarm
#CFLAGS=-O2 -pipe -g -feliminate-unused-debug-types
#CXXFLAGS=-O2 -pipe -g -feliminate-unused-debug-types

BIN = lib/libgpsserial.a
MODULES = gpsserial
SAMPLES = gpsreader

OBJ = $(MODULES:%=build/gpsserial_gcc/%.o)
LINKOBJ = $(OBJ) $(RES)

SMPLS = $(SAMPLES:%=samples_%)
SMPLOBJ = $(SAMPLES:%=samples/%/main.o)

INCS = -I include
LIBS = -lm -Llib -lgpsserial -Llibs  -lnmea

.PHONY: all all-before all-after clean clean-custom doc

all: all-before $(BIN) samples all-after 

all-before:
    mkdir -p build/gpsserial_gcc

clean: clean-custom
    rm -f $(LINKOBJ) $(BIN) $(SMPLOBJ) $(SMPLS)

doc:
    $(MAKE) -C doc

remake: clean all

$(BIN): $(LINKOBJ)
    ar rsc $@ $^
    ranlib $@

build/gpsserial_gcc/%.o: src/%.c
    $(CC) $(INCS) -c $< -o $@

samples: $(SMPLS)

samples_%: samples/%/main.o
    $(CC) $< $(LIBS) -o build/$@ -lm

samples/%/main.o: samples/%/main.c
    $(CC) $(INCS)  -c $< -o $@