1 CC=gcc
2 TARGET=test
3 SRC=$(wildcard *.c)
4
5 OBJECT= ${SRC:.c=.o}
6 INCLUDES=-I/usr/include/alsa
7 LDFLAGS=-lasound
8
9 all:$(TARGET)
10
11 $(OBJECT):$(SRC)
12 $(CC) -c $(INCLUDES) $<
13
14 $(TARGET):$(OBJECT)
15 $(CC) -o $@ $< $(LDFLAGS)
16
17 .PHONY:clean
18
19 clean:
20 @rm -rf $(OBJECT) $(TARGET) *~
Makefile每个命令的第一个字符必须是制表符[tab]
参考的文章，发表在了csdn上。
源文件保存为test1.c
这是make输出的结果：
root@ubuntu:/home/zhangbin/code/alsatest# make
gcc -c -I/usr/include/alsa test1.c
gcc -o test test1.o -lasound
运行结果：
root@ubuntu:/home/zhangbin/code/alsatest# ./test
ALSA library version: 1.0.22
PCM stream types:
PLAYBACK
CAPTURE
PCM access types:
MMAP_INTERLEAVED
MMAP_NONINTERLEAVED
MMAP_COMPLEX
RW_INTERLEAVED
RW_NONINTERLEAVED
PCM formats:
S8 (Signed 8 bit)
U8 (Unsigned 8 bit)
S16_LE (Signed 16 bit Little Endian)
S16_BE (Signed 16 bit Big Endian)
U16_LE (Unsigned 16 bit Little Endian)
U16_BE (Unsigned 16 bit Big Endian)
S24_LE (Signed 24 bit Little Endian)
S24_BE (Signed 24 bit Big Endian)
U24_LE (Unsigned 24 bit Little Endian)
U24_BE (Unsigned 24 bit Big Endian)
S32_LE (Signed 32 bit Little Endian)
S32_BE (Signed 32 bit Big Endian)
U32_LE (Unsigned 32 bit Little Endian)
U32_BE (Unsigned 32 bit Big Endian)
FLOAT_LE (Float 32 bit Little Endian)
FLOAT_BE (Float 32 bit Big Endian)
FLOAT64_LE (Float 64 bit Little Endian)
FLOAT64_BE (Float 64 bit Big Endian)
IEC958_SUBFRAME_LE (IEC-958 Little Endian)
IEC958_SUBFRAME_BE (IEC-958 Big Endian)
MU_LAW (Mu-Law)
A_LAW (A-Law)
IMA_ADPCM (Ima-ADPCM)
MPEG (MPEG)
GSM (GSM)
SPECIAL (Special)
S24_3LE (Signed 24 bit Little Endian in 3bytes)
S24_3BE (Signed 24 bit Big Endian in 3bytes)
U24_3LE (Unsigned 24 bit Little Endian in 3bytes)
U24_3BE (Unsigned 24 bit Big Endian in 3bytes)
S20_3LE (Signed 20 bit Little Endian in 3bytes)
S20_3BE (Signed 20 bit Big Endian in 3bytes)
U20_3LE (Unsigned 20 bit Little Endian in 3bytes)
U20_3BE (Unsigned 20 bit Big Endian in 3bytes)
S18_3LE (Signed 18 bit Little Endian in 3bytes)
S18_3BE (Signed 18 bit Big Endian in 3bytes)
U18_3LE (Unsigned 18 bit Little Endian in 3bytes)
U18_3BE (Unsigned 18 bit Big Endian in 3bytes)
PCM subformats:
STD (Standard)
PCM states:
OPEN
SETUP
PREPARED
RUNNING
XRUN
DRAINING
PAUSED
SUSPENDED
DISCONNECTED
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