包含Nvidia的nvapi.h会导致编译错误

问题描述 投票：2回答：2

我正在尝试使用NVIDIA的nvapi，我有编译错误，我不完全理解。也许我使用错误的编译器？

#include "nvapi.h"
#include <iostream>

int main()
{
    printf("Hello nvapi!");
    return 0;
}

编译：g++ nvapi_hello.cpp

输出（截断，因为它太长）：

In file included from nvapi_lite_d3dext.h:35:0,
                 from nvapi.h:6,
                 from nvapi_hello.cpp:1:
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:134:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Unload();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:134:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Unload();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:134:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Unload();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:153:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetErrorMessage(NvAPI_Status nr,NvAPI_ShortString szDesc);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:153:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetErrorMessage(NvAPI_Status nr,NvAPI_ShortString szDesc);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:153:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetErrorMessage(NvAPI_Status nr,NvAPI_ShortString szDesc);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:174:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetInterfaceVersionString(NvAPI_ShortString szDesc);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:174:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetInterfaceVersionString(NvAPI_ShortString szDesc);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:174:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetInterfaceVersionString(NvAPI_ShortString szDesc);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:319:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GPU_GetEDID(NvPhysicalGpuHandle hPhysicalGpu, NvU32 displayOutputId, NV_EDID *pEDID);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:319:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GPU_GetEDID(NvPhysicalGpuHandle hPhysicalGpu, NvU32 displayOutputId, NV_EDID *pEDID);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:319:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GPU_GetEDID(NvPhysicalGpuHandle hPhysicalGpu, NvU32 displayOutputId, NV_EDID *pEDID);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:669:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_SetView(NvDisplayHandle hNvDisplay, NV_VIEW_TARGET_INFO *pTargetInfo, NV_TARGET_VIEW_MODE targetView);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:669:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_SetView(NvDisplayHandle hNvDisplay, NV_VIEW_TARGET_INFO *pTargetInfo, NV_TARGET_VIEW_MODE targetView);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:669:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_SetView(NvDisplayHandle hNvDisplay, NV_VIEW_TARGET_INFO *pTargetInfo, NV_TARGET_VIEW_MODE targetView);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:808:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_SetViewEx(NvDisplayHandle hNvDisplay, NV_DISPLAY_PATH_INFO *pPathInfo, NV_TARGET_VIEW_MODE displayView);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:808:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_SetViewEx(NvDisplayHandle hNvDisplay, NV_DISPLAY_PATH_INFO *pPathInfo, NV_TARGET_VIEW_MODE displayView);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:808:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_SetViewEx(NvDisplayHandle hNvDisplay, NV_DISPLAY_PATH_INFO *pPathInfo, NV_TARGET_VIEW_MODE displayView);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1030:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetDisplayDriverVersion(NvDisplayHandle hNvDisplay, NV_DISPLAY_DRIVER_VERSION *pVersion);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1030:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetDisplayDriverVersion(NvDisplayHandle hNvDisplay, NV_DISPLAY_DRIVER_VERSION *pVersion);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:1030:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetDisplayDriverVersion(NvDisplayHandle hNvDisplay, NV_DISPLAY_DRIVER_VERSION *pVersion);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1159:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeSet(NvU32 expertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1159:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeSet(NvU32 expertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:1159:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeSet(NvU32 expertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1167:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeGet(NvU32 *pExpertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1167:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeGet(NvU32 *pExpertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:1167:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeGet(NvU32 *pExpertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1209:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeDefaultsSet(NvU32 expertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1209:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeDefaultsSet(NvU32 expertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:1209:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeDefaultsSet(NvU32 expertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1216:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeDefaultsGet(NvU32 *pExpertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1216:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeDefaultsGet(NvU32 *pExpertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:1216:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_OGL_ExpertModeDefaultsGet(NvU32 *pExpertDetailLevel,
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1251:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_EnumTCCPhysicalGPUs( NvPhysicalGpuHandle nvGPUHandle[NVAPI_MAX_PHYSICAL_GPUS], NvU32 *pGpuCount);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1251:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_EnumTCCPhysicalGPUs( NvPhysicalGpuHandle nvGPUHandle[NVAPI_MAX_PHYSICAL_GPUS], NvU32 *pGpuCount);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:1251:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_EnumTCCPhysicalGPUs( NvPhysicalGpuHandle nvGPUHandle[NVAPI_MAX_PHYSICAL_GPUS], NvU32 *pGpuCount);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1282:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_EnumLogicalGPUs(NvLogicalGpuHandle nvGPUHandle[NVAPI_MAX_LOGICAL_GPUS], NvU32 *pGpuCount);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1282:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_EnumLogicalGPUs(NvLogicalGpuHandle nvGPUHandle[NVAPI_MAX_LOGICAL_GPUS], NvU32 *pGpuCount);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
nvapi.h:99:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_Initialize();
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:42: error: expected primary-expression before 'return'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                          ^
nvapi.h:1282:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_EnumLogicalGPUs(NvLogicalGpuHandle nvGPUHandle[NVAPI_MAX_LOGICAL_GPUS], NvU32 *pGpuCount);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: warning: '__success' initialized and declared 'extern'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1308:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetPhysicalGPUsFromDisplay(NvDisplayHandle hNvDisp, NvPhysicalGpuHandle nvGPUHandle[NVAPI_MAX_PHYSICAL_GPUS], NvU32 *pGpuCount);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:41: error: redefinition of 'int __success'
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                         ^
nvapi.h:1308:1: note: in expansion of macro 'NVAPI_INTERFACE'
 NVAPI_INTERFACE NvAPI_GetPhysicalGPUsFromDisplay(NvDisplayHandle hNvDisp, NvPhysicalGpuHandle nvGPUHandle[NVAPI_MAX_PHYSICAL_GPUS], NvU32 *pGpuCount);
 ^~~~~~~~~~~~~~~
nvapi_lite_salstart.h:821:32: note: 'int __success' previously defined here
 #define NVAPI_INTERFACE extern __success(return == NVAPI_OK) NvAPI_Status __cdecl
                                ^
 ...

我安装了mingw-w64，我使用的是g++版本：

g++ (x86_64-posix-sjlj-rev2, Built by MinGW-W64 project) 6.3.0
Copyright (C) 2016 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

我从https://developer.nvidia.com/gameworksdownload#?search=nvapi下载了NVIDIA的NVAPI SDK

c++ nvidia nvapi
2个回答
1
投票

我找到了一个答案here解释这些变量是用文件#define中的nvapi_lite_salstart.h创建的，然后在文件#undef中使用nvapi_lite_salend.h未定义，它在每个头文件的开头和结尾分别调用，如nvapi.h开头所列：

#include"nvapi_lite_salstart.h" //Remove this line
#include"nvapi_lite_common.h"
#include"nvapi_lite_sli.h"
#include"nvapi_lite_surround.h"
#include"nvapi_lite_stereo.h"
#include"nvapi_lite_d3dext.h"
#include"nvapi_lite_salstart.h" //Add this line to fix the errors

正如您所看到的，看起来“salstart”文件只需要移动到列表的末尾，因为由于某种原因它在顶部不正确。不确定为什么它在Visual Studio中正常工作（没有进行上述修改），但这至少解决了MinGW中的错误;但是，nVidia提供的预编译库文件（nvapi.lib或nvapi64.lib）与MinGW不兼容，因此您不得不使用MS Visual Studio。

1
投票

看起来NVIDIA API中提供的头文件与g++ / GCC编译器不兼容。所以我选择使用微软的C / C ++ x64编译器。我使用CMake（v3.5.2）创建了一个Visual Studio 2010解决方案，并且在我的CMakeLists.txt文件摆弄之后一直运行良好。

这是我的CMakeLists.txt的内容：

cmake_minimum_required(VERSION 3.5)
include_directories(3rdparty)
link_directories(3rdparty/amd64)
add_executable(nvapi_test nvapi_hello.cpp)
target_link_libraries(nvapi_test nvapi64.lib)

3rdparty目录包含amd64所在的nvapi64.lib文件夹，以及NVAPI的*.h和*.c文件。

另外，正如我的问题（@RichardCritten）的评论中所提到的，我必须在#include <Windows.h>文件的顶部添加.cpp才能正确编译。

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