Question

我试图使用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;
}

汇编： g++ nvapi_hello.cpp

输出（因为它太长而被截断）：

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
                                ^
 ...

我使用g++版安装了mingw-w64和我：

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.

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

Answer 1

似乎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，并且在摆弄了我的CMakeLists.txt文件之后一直运行良好。

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。< / p>

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。

Answer 2

我找到了一个答案here，解释了这些变量是在文件#define中用nvapi_lite_salstart.h创建的，然后在文件#undef中使用nvapi_lite_salend.h进行了不确定的在每个头文件中分别在开头和结尾处调用，如nvapi.h开头所示：

#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

如您所见，似乎“ salstart”文件只需要移到列表的末尾，因为某种原因，它不正确地位于顶部。不确定为什么在Visual Studio中可以正常工作（无需进行上述修改即可），但这至少可以解决MinGW中的这些错误；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。

包含Nvidia的nvapi.h会导致编译错误

2 个答案: