具有多个 .h 和 .cu 文件的静态库无法解析函数

问：

当使用 multiple.h 和 .cu 文件编译静态库时，我得到一个未解析的 extern 函数。下面是一个复制错误的简短示例。

看来我无法先让 Nsight Eclipse Edition 编译 extrafunctions.cu。在我的完整项目中，首先编译了具有额外函数的文件，但它仍然抛出无法解决外部函数错误。

下面是此示例的输出：Here's the output for this sample：

**** Build of configuration Debug for project linkerror ****

make all 
Building file: ../cudatest.cu
Invoking: NVCC Compiler
nvcc -I/usr/local/cuda/include -G -g -O0 -gencode arch=compute_30,code=sm_30 -odir "" -M -o "cudatest.d" "../cudatest.cu"
nvcc --compile -G -I/usr/local/cuda/include -O0 -g -gencode arch=compute_30,code=compute_30 -gencode arch=compute_30,code=sm_30  -x cu -o  "cudatest.o" "../cudatest.cu"
../cudatest.cu(19): warning: variable "devInts" is used before its value is set

../cudatest.cu(19): warning: variable "devInts" is used before its value is set

ptxas fatal   : Unresolved extern function '_Z9incrementi'
make: *** [cudatest.o] Error 255

**** Build Finished ****

cudatest.h：

#ifndef CUDAPATH_H_
#define CUDAPATH_H_

#include <cuda.h>
#include <cuda_runtime.h>
#include "extrafunctions.h"

void test();


#endif /* CUDAPATH_H_ */

cudatest.cu：

#include <cuda.h>
#include <cuda_runtime.h>
#include "extrafunctions.h"

__global__ void kernel(int* devInts){
    int tid = threadIdx.x + (blockDim.x*blockIdx.x);

    if (tid == 0){
        for(int i = 0; i < NUMINTS; i++){
            devInts[i] = increment(devInts[i]);
        }
    }
}

void test(){

    int* myInts = (int*)malloc(NUMINTS * sizeof(int));
    int* devInts;
    cudaMemcpy((void**)devInts, myInts, NUMINTS*sizeof(int), cudaMemcpyHostToDevice);
    kernel<<<1,1>>>(devInts);
    int* outInts = (int*)malloc(NUMINTS * sizeof(int));
    cudaFree(devInts);
    free(myInts);
    free(outInts);
}

extrafunctions.h：

#ifndef EXTRAFUNCTIONS_H_
#define EXTRAFUNCTIONS_H_

#include <cuda.h>
#include <cuda_runtime.h>

#define NUMINTS 4

int __device__ increment(int i);

#endif /* EXTRAFUNCTIONS_H_ */

extrafunctions.cu：

#include <cuda.h>
#include <cuda_runtime.h>
#include "extrafunctions.h"


int __device__ increment(int i){
    return i+1;
}