一般开发应用软件时，常考虑文件的增减而需要修改makefile，或采用autoconf，都比较麻烦，

这里提供一个相对通用的，使用时把所有的文件都放在一个目录，然后编译即可。

自动编译当前目录所有的文件。

文件内容如下：

TARGET = hello.out
CROSS_COMPILE = arm-linux-
#
# include the make variable (CC, etc...)
#
CC = $(CROSS_COMPILE)gcc
AS = $(CROSS_COMPILE)as
LD = $(CROSS_COMPILE)ld
CPP = $(CC) -E
AR = $(CROSS_COMPILE)ar
NM = $(CROSS_COMPILE)nm
LDR = $(CROSS_COMPILE)ldr
STRIP = $(CROSS_COMPILE)strip
OBJCOPY = $(CROSS_COMPILE)objcopy
OBJDUMP = $(CROSS_COMPILE)objdump
RANLIB = $(CROSS_COMPILE)RANLIB

CFLAGS =
LDFLAGS = -static
SRC_LST = $(shell find -name "*.c")
OBJECTS = $(subst .c,.o,$(SRC_LST))
LOBJECTS = $(OBJECTS)

all: BUILD_START $(TARGET) BUILD_END

BUILD_START:
@clear
@$(CC) --v
@echo "-------------------Build Start-------------------"

BUILD_END:
cp $(TARGET) /home/dev/application/appImage/usr/sbin/pro/
@echo "-------------------Build End-------------------"


$(TARGET): $(LOBJECTS)
$(CC) $(LDFLAGS) $(LOBJECTS) -o $@

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

clean:
rm -rf *.o
rm -rf $(TARGET)