未定义的类构造函数引用

时间:2014-02-21 03:34:32

标签: c++ makefile

我收到以下错误:

> /tmp/ccYbdvB8.o: In function `main':
> /home/caleb/Documents/dev/cs438/tote2/mp2/manager.cpp:5: undefined
> reference to `TCPConnection::TCPConnection(char const*, char const*)'
> collect2: error: ld returned 1 exit status make: *** [manager] Error 1

我已经将标题包含在我正在尝试初始化的类中..所以我想也许这是我的makefile?我是编写自定义makefile的新手......

CPP:

#include "tcpcon.h"

const string TCPConnection::Client = "client";
const string TCPConnection::Server = "server";

TCPConnection::TCPConnection(const char* t, const char* p) : target(t), port(p)
{ }

H:

class TCPConnection{    
    public:    
        TCPConnection(const char *target, const char *port);

主要

#include "tcpcon.h"

int main()
{
    TCPConnection *TCPCon = new TCPConnection("localhost", "7777");
    cout << "Hi\n";
    return 0;
}

生成文件:

CC=g++
CCOPTS=-Wall -Wextra -g

OBJS = tcpcon.o
TARGETS = manager

.PHONY: all clean

$(TARGET) : $(OBJS)
    $(CC) -o $@ $^ $(CFLAGS) $(LIBS)

all: $(OBJS) $(TARGETS)

clean:
    rm -f $(TARGETS) $(OBJS)

%: %.cpp
    $(CC) $(CCOPTS) -o $@ $<

1 个答案:

答案 0 :(得分:1)

事实证明,这个问题可能与以下几点有关:

  • 在一个地方使用$(TARGET)代替$(TARGETS)
  • 未将主文件(manager.cpp)包含在OBJS列表中

我的更新makefile如下:

CC=g++
CCOPTS=-Wall -Wextra -g

OBJS = manager.o tcpcon.o
TARGETS = manager

.PHONY: all clean

$(TARGETS) : $(OBJS)
    $(CC) -o $@ $^ $(CFLAGS) $(LIBS)

all: $(TARGETS) $(OBJS)

clean:
    rm -f $(TARGETS) $(OBJS)

%: %.cpp
    $(CC) $(CCOPTS) -o $@ $<