Question

我收到了这个错误，我无法在任何地方找到解决方案..它本应该正常工作但是由于这些错误，我没有继续前进，我找不到问题所在......

g++ -std=c++0x -pedantic -Wall -Wextra simims.cpp -o simims
/tmp/ccZa3W7s.o: In function `Calendar::Init(double, double)':
simims.cpp:(.text+0x5d): undefined reference to `Calendar::start_time'
simims.cpp:(.text+0x6a): undefined reference to `Calendar::Time'
simims.cpp:(.text+0x77): undefined reference to `Calendar::end_time'
/tmp/ccZa3W7s.o: In function `Calendar::Push(Process*, double)':
simims.cpp:(.text+0x9f): undefined reference to 
`Calendar::listOfEvents[abi:cxx11]'
/tmp/ccZa3W7s.o: In function `Calendar::Pop(std::__cxx11::list<Process, 
std::allocator<Process> >)':
simims.cpp:(.text+0x1b9): undefined reference to 
`Calendar::listOfEvents[abi:cxx11]'
/tmp/ccZa3W7s.o: In function `Calendar::PopLists[abi:cxx11](double)':
simims.cpp:(.text+0x1da): undefined reference to 
`Calendar::listOfEvents[abi:cxx11]'
/tmp/ccZa3W7s.o: In function `Calendar::Run()':
simims.cpp:(.text+0x230): undefined reference to `Calendar::Time'
simims.cpp:(.text+0x24a): undefined reference to 
`Calendar::listOfEvents[abi:cxx11]'
simims.cpp:(.text+0x29a): undefined reference to `Calendar::end_time'
simims.cpp:(.text+0x2b1): undefined reference to `Calendar::Time'
simims.cpp:(.text+0x2b9): undefined reference to `Calendar::Time'
simims.cpp:(.text+0x2c1): undefined reference to `Calendar::start_time'
simims.cpp:(.text+0x2d9): undefined reference to `Process::Behavior()'
simims.cpp:(.text+0x2f8): undefined reference to `Calendar::Time'
simims.cpp:(.text+0x30c): undefined reference to `Calendar::Time'
/tmp/ccZa3W7s.o: In function `Process::Wait(double)':
simims.cpp:(.text+0x3ef): undefined reference to `Calendar::Time'
collect2: error: ld returned 1 exit status

这是我在C ++中的课程：

class Calendar
{
public:
    static double start_time;
    static double Time;
    static double end_time; 
    static list<list<Process>> listOfEvents;
    Calendar();
    ~Calendar();
    static void Run();
    static void Push(Process*, double t);
    static Process * Pop(list<Process> listOfLists);
    static list<Process> PopLists(double t);
    static void Init(double, double);
    static Calendar * GetInstance()     // Singleton
    {
        if(instance == NULL)
            instance = new Calendar();
        return instance;
    }
private:
    static Calendar * instance;     // Singleton variable
};

任何人都知道哪里可能有问题？谢谢

Answer 1

变量名称Time和类Time之间存在冲突。

static double Time;

将时间重命名为其他变量。

static double MyTime;

Answer 2

您应首先使用Calendar类编译该文件：

g++ -std=c++0x -pedantic -Wall -Wextra Calendar.cpp -o calendar.o

然后尝试将其与simims.cpp：

C ++未定义类函数的引用

2 个答案: