我得到了一些问题,“链接错误LNK2005 ...已经定义”的错误。该文件如下:链接错误LNK2005几个CUDA文件
// File Bitmap4.cu
#include "Bitmap4.h" // header
#include "Bitmaps_cuda.h" // header with just the definitions of the kernels
..... // I call 3+2 kernel functions (3 in one method, 1 in another and 1 in another one)
然后,我有这样一条:
// File Bitmap8.cu
#include "Bitmap8.h" // header
#include "Bitmaps_cuda.h" // the same as above
..... // I call 4 kernel functions (4 in the same method)
然后,我有内核头:
#ifndef __BITMAPS_KERNEL__
#define __BITMAPS_KERNEL__
...... // 9 kernels definitions
#endif
最后,我有这样的一个:
// File Bitmaps_cuda.h
#include <cuda.h>
#include <cuda_runtime.h>
#include <device_launch_parameters.h>
#include <device_functions.h>
#include <stdio.h>
// Inside here there all the kernel functions that the files
// Bitmap4.cu and Bitmap8.cu are using
问题是,如果我不' t包括#include“Bitmaps_cuda.h”在Bitmap * .cu中的一个,当然,编译器会说我错过了内核函数的定义。我读了很多帖子,并且我已经包含了“附加依赖关系”和所需的PATH。当我将文件Bitmap8.cu与相关的内核相加时,问题就开始了,因为在此之前,应用程序工作正常。
无论如何,这些都是我有错误:
1>Bitmap8.cu.obj : error LNK2005: "void * __cdecl big_random_block(int([email protected]@[email protected]) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "int * __cdecl big_random_block_int(int([email protected]@[email protected]) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "unsigned char __cdecl value(float,float,int([email protected]@[email protected]) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void * __cdecl start_thread(unsigned int(__stdcall*)(void *),void *)" ([email protected]@[email protected]@Z) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl end_thread(void *)"([email protected]@[email protected]) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl destroy_thread(void *)"([email protected]@[email protected]) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl wait_for_threads(void * const *,int)"([email protected]@[email protected]) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl__device_stub__Z14float_to_colorPhPKf(unsigned char *,float const *)"([email protected]@[email protected]) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl float_to_color(unsigned char *,float_const *)" ([email protected]@[email protected]) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl__device_stub__Z14float_to_colorP6uchar4PKf(struct uchar4 *,float const *)"([email protected]@[email protected]@[email protected]) already defined in Bitmap4.cu.obj
1>Bitmap8.cu.obj : error LNK2005: "void __cdecl float_to_color(struct uchar4 *,float_const *)" ([email protected]@[email protected]@[email protected]) already defined in Bitmap4.cu.obj
1>C:\Users\dberdin\documents\visual studio 2010\Projects\gpuSPAM\Debug\gpuSPAM.exe : fatal error LNK1169: one or more multiply defined symbols found
我尝试了不同的解决方案,但与任何结果。
预先感谢您!
EDIT
在网站上(http://msdn.microsoft.com/en-us/library/72zdcz6f.aspx)我发现,这些错误的原因之一是:
- 绝对被定义了两次,在每个定义不同的值。
嗯,实际上,正如我在底部写的那样,我有这样的定义,但我无法改变。任何想法如何解决它?
再次感谢您提前
我包含一个头文件两次!问题解决了! – davideberdin 2012-04-05 14:31:20