我得到了一些問題,「鏈接錯誤LNK2005 ...已經定義」的錯誤。該文件如下:鏈接錯誤LNK2005幾個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)
然後,我有這樣一條:
// 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)
然後,我有內核頭:
#ifndef __BITMAPS_KERNEL__
#define __BITMAPS_KERNEL__
...... // 9 kernels definitions
#endif
最後,我有這樣的一個:
// 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
問題是,如果我不' t包括#include「Bitmaps_cuda.h」在Bitmap * .cu中的一個,當然,編譯器會說我錯過了內核函數的定義。我讀了很多帖子,並且我已經包含了「附加依賴關係」和所需的PATH。當我將文件Bitmap8.cu與相關的內核相加時,問題就開始了,因爲在此之前,應用程序工作正常。
無論如何,這些都是我有錯誤:
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
我嘗試了不同的解決方案,但與任何結果。
預先感謝您!
EDIT
在網站上(http://msdn.microsoft.com/en-us/library/72zdcz6f.aspx)我發現,這些錯誤的原因之一是:
- 絕對被定義了兩次,在每個定義不同的值。
嗯,實際上,正如我在底部寫的那樣,我有這樣的定義,但我無法改變。任何想法如何解決它?
再次感謝您提前
我包含一個頭文件兩次!問題解決了! – davideberdin 2012-04-05 14:31:20