Question

LNK1169：找到一个或多个多重定义的符号。

我的项目是一个并行化的随机数生成器，使用MPI和并行前缀算法。我查找了许多LNK1169错误的解决方案。为了防止这种情况，我将许多变量设为静态，我查找了多个定义的变量，并且找不到任何变量。我没有头文件，其中变量可以被多次定义。如果有人能帮我找到错误，我会非常感激。我很确定在某个地方的functions.cpp中发生了错误，因为在我尝试实现parallel_prefix函数之前，所有内容都正确构建。

这里也是LNK2005的输出：

LNK2005“class std :: vector＆gt;，class std :: allocator＆gt;＆gt;＆gt; __cdecl parallel_prefix（class std :: vector＆gt;，class std :: allocator＆gt;＆gt;＆gt;，class std：：allocator＆gt;，class std :: allocator＆gt;＆gt;＆gt;＆gt;＆gt;，int，int）“（？parallel_prefix @@ YA？AV？$ vector @ V？$ vector @ HV？$ allocator @ H @ STD @@@ STD @@ V'$分配器@ V'$矢量@ HV？$分配器3 H @ STD @@@ STD @@@ 2 @@ STD @@ V'$ @矢量V'$矢量@ V· $矢量@ HV？$分配器3 H @ STD @@@ STD @@ V'$分配器@ V'$矢量@ HV？$分配器3 H @ STD @@@ STD @@@ 2 @@ STD @@ V· $ @分配器V'$ @矢量V'$ @矢量HV？$ @分配器H + STD @@@性病@@ V'$ @分配器V'$ @矢量HV？$ @分配器H + STD @@@ STD @ @@ 2 @@ std @@@ 2 @@ 2 @HH @ Z）已经在functions.obj中定义了RandomNumberGenerator

这是我的代码。

RandomNumberGenerator.cpp

false

functions.cpp

#include "functions.cpp"

int main(int argc, char *argv[])
{
    // Establishes what rank it is, and how many processes are running.
    static int rank, p, n, per_Process;
    MPI_Init(&argc, &argv);
    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
    MPI_Comm_size(MPI_COMM_WORLD, &p);
    static vector<int> Broadcast_data;
    n = 100;
    per_Process = n / p;

// The first and second arguments are constants for number generation, the third is a large prime to mod by, and the fourth is a random seed. x1 is calculated based off x0.
// All provided by the user except x1.
// Rank 0 broadcasts the data to all processes.
if (rank == 0)
{
    for (static int i = 1; i < 5; i++)
    {
        Broadcast_data.push_back(std::atoi(argv[i]));
    }
    Broadcast_data.push_back(std::atoi(argv[1]) *std::atoi(argv[4]) % std::atoi(argv[3]));

    // NOTE: THIS PUSH BACK IS HOW MANY RANDOM NUMBERS WILL BE GENERATED
    Broadcast_data.push_back(n);
    cout << "Rank " << rank << " Broadcast Data: ";
    for (static int i = 0; i < 6; i++)
    {
        cout << Broadcast_data[i] << " ";
    }
    cout << endl;
}
else
{
    Broadcast_data.resize(6);
}
MPI_Bcast(Broadcast_data.data(), 6, MPI_INT, 0, MPI_COMM_WORLD);
MPI_Barrier(MPI_COMM_WORLD);

// Initialize an array of n/p values at every process.  Each of the n/p values is the matrix M.
// M is this 2 dimmensional array:
// [ a 1 ]
// [ b 0 ]
static vector<vector<int>> M;
M.resize(2);
M[0].resize(2);
M[1].resize(2);
M[0][0] = Broadcast_data[0];
M[0][1] = Broadcast_data[1];
M[1][0] = 1;
M[1][1] = 0;

// Now we must initialize the array of these M values.  Notation might get complex here
// as we are dealing with 3D arrays.
static vector<vector<vector<int>>> M_values;
M_values.resize(per_Process);
for (static int i = 0; i < per_Process; i++)
{
    M_values.push_back(M);
}

// Now we are ready for the parallel prefix operation.  Note that the operator here
// is matrix multiplication.
static vector<vector<int>> prefix;
prefix = parallel_prefix(M_values, rank, p);


MPI_Finalize();

return 0;
}

Answer 1

您在functions.cpp中包含main.cpp，并且可能还将其包含在您的项目中。这会将functions.cpp中的内容编译两次。

不要在主要内容中包含functions.cpp。使用functions.h来声明其中的函数。

LNK1169错误我找不到

1 个答案: