Question

我是Mosquitto的新手，我想写一个连接到Mosquitto测试服务器的简单C客户端：http://test.mosquitto.org/

以下是简单C客户端的代码，它是Mosquitto网站上99.9％的示例：http://pastie.org/private/orwicqjfjz8g8biurznca

编辑1：

我按照评论写了一个makefile而不是做

gcc -o test test.c

makefile如下所示：

CC = gcc
CFLAGS = -I
DEPS = mosquitto.h

LIBS = -llibmosquitto

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

make: test.c
    $(CC) -m32 -Wall -o $@ $^ $(CFLAGS) $(LIBS)

.PHONY: clean

这是我得到的输出，这似乎是将mosquitto libs与gcc连接起来的一些问题：

Undefined symbols for architecture i386:
  "_mosquitto_connect", referenced from:
  _main in cc6Blyda.o
  "_mosquitto_connect_callback_set", referenced from:
  _main in cc6Blyda.o
  "_mosquitto_destroy", referenced from:
  _main in cc6Blyda.o
  "_mosquitto_lib_cleanup", referenced from:
  _main in cc6Blyda.o
  "_mosquitto_lib_init", referenced from:
  _main in cc6Blyda.o
  "_mosquitto_log_callback_set", referenced from:
  _main in cc6Blyda.o
  "_mosquitto_loop", referenced from:
  _main in cc6Blyda.o
  "_mosquitto_message_callback_set", referenced from:
  _main in cc6Blyda.o
  "_mosquitto_new", referenced from:
  _main in cc6Blyda.o
  "_mosquitto_subscribe", referenced from:
  _my_connect_callback in cc6Blyda.o
  "_mosquitto_subscribe_callback_set", referenced from:
  _main in cc6Blyda.o
ld: symbol(s) not found for architecture i386
collect2: ld returned 1 exit status
make: *** [make] Error 1

注意：我使用自制软件来安装mosquitto，因此lib的路径是

/usr/local/Cellar/mosquitto/1.1/

感谢任何帮助!!

此致

Answer 1

我通过makefile中的一些试错来解决了链接问题。

这是最终的makefile看起来如何，它没有给出任何链接问题：

CC = gcc

LIBS = -lmosquitto

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

make: test.c
    $(CC) -Wall -o test $^ $(LIBS)

.PHONY: clean

由于

在OSX上将Mosquitto与gcc联系起来

1 个答案: