protobuf 测试 & Makefile example

很久没有写C++程序了，很多东西都忘了，几天试了一下protobuf的tutorial，顺便写了Makefile：

根据./proto/目录下的addressbook.proto（ 内容请参考tutorial）生成.cc和.h文件，放到./cpp/proto/目录下

$ protoc -I=./proto/ --cpp_out=./cpp/proto/ ./proto/addressbook.proto

在 ./cpp/ 目录下

$ cd ./cpp

编写reader.cc 和 writer.cc（ 内容请参考tutorial ）

编写Makefile文件，关于gcc编译过程和makefile中的特殊符号，请参考这里和这里

$ cat Makefile
LIBS=-lprotobuf
CC=gcc
ARGS=-Wall -c

all:reader writer

reader:reader.o addressbook.pb.o
        $(CC) $^ $(LIBS) -o $@
writer:writer.o addressbook.pb.o
        $(CC) $^ $(LIBS) -o $@
reader.o:reader.cc proto/addressbook.pb.h
        $(CC) $(ARGS) $*.cc -o $@
writer.o:writer.cc proto/addressbook.pb.h
        $(CC) $(ARGS) $*.cc -o $@
addressbook.pb.o:proto/addressbook.pb.cc proto/addressbook.pb.h
        $(CC) $(ARGS) proto/$*.cc -o $@
clean:
        rm *.o -f
        rm reader writer -f

生成reader和writer程序

$make

测试 writer和reader

$ ./writer address.txt
Enter person ID number: 01
Enter name: donal
Enter email address (blank for none): donal0412@gmail.com
Enter a phone number (or leave blank to finish): 88236017
Is this a mobile, home, or work phone? work
Enter a phone number (or leave blank to finish): 

$ ./reader address.txt 
Person ID: 1
  Name: donal
  E-mail address: donal0412@gmail.com
  Work phone #: 88236017