将 HDF5 库链接到 Visual C++ DLL 项目：无法解析的外部符号 imp*

发布于 2024-12-04 06:54:41 字数 1724 浏览 1 评论 0原文

我正在使用 MS Visual C++ 2010 Express 构建一个插件，我想包含 HDF5 库的功能。我尝试过使用 CMake 从源代码构建 HDF5，并安装预编译库 (HDF5 -1.8.7_CMake_x86_shared.zip（适用于 VC 2008）。对于任一构建目录/方法，我修改了我的项目属性：

C/C++ >一般>其他包含目录：为 HDF5 Linker 添加 include
>一般>其他库目录：为 HDF5 添加 lib

这是我的 DLL 模块的片段：

#include "cpp/H5Cpp.h"

static IResult OnBeginDocument (IDocument pDoc)
{
  H5Fcreate("C:\\out.h5", H5F_ACC_EXCL, H5P_DEFAULT, H5P_DEFAULT);

  return True;
}

请注意，VC++ 正确解析 .h 文件，例如，直观地显示弹出窗口当我将鼠标悬停在该代码片段上时，H5Fcreate 的文档。我的问题是我无法构建尝试使用 H5Fcreate 的模块。以下是我的构建尝试的控制台输出：

1>MyProject.obj : error LNK2019: unresolved external symbol __imp__H5Fcreate referenced in function "int __cdecl OnBeginDocument(struct IModuleStruct *)" (?OnBeginDocument@@YAHPAUIModuleStruct@@@Z)
1>MyProject.obj : error LNK2019: unresolved external symbol __imp__H5check_version referenced in function "int __cdecl OnBeginDocument(struct IModuleStruct *)" (?OnBeginDocument@@YAHPAUIModuleStruct@@@Z)
1>C:\MyProject\Release\MyProject.dll : fatal error LNK1120: 2 unresolved externals

尝试链接 HDF5 的两种方法（预编译与自编译，如上所述）都会产生完全相同的错误，因此我不确定哪里出错了。

非常感谢@HasanKhan 和@StevieG，这些对于像我这样的n00bs 来说是很有帮助的提示。为了清楚地跟进，我确实需要在 Linker > 中添加 lib 文件路径输入>其他依赖项：

hdf5dll.lib
hdf5_cppdll.lib

如果我需要其他 HDF5 功能，我可能需要添加其他 lib 文件。另外，事实证明，我需要将 HDF5 DLL（从 bin）复制到我的系统目录（例如，C:\WINDOWS\System32\），以便插件能够运行时正确运行。现在一切都好，谢谢！

原文

I'm building a plug-in with MS Visual C++ 2010 Express, and I would like to include capabilities from the HDF5 library. I have tried both building HDF5 from source with CMake, and installing the precompiled library (HDF5-1.8.7_CMake_x86_shared.zip for VC 2008). For either build directory/method, I've modified my project property:

C/C++ > General > Additional Include Directories: add the include for HDF5
Linker > General > Additional Library Directories: add the lib for HDF5

Here is a snippet of my DLL module:

#include "cpp/H5Cpp.h"

static IResult OnBeginDocument (IDocument pDoc)
{
  H5Fcreate("C:\\out.h5", H5F_ACC_EXCL, H5P_DEFAULT, H5P_DEFAULT);

  return True;
}

Note that VC++ correctly parses the .h files to, e.g., visually show pop-up documentation for H5Fcreate when I hover my mouse over that snippet. My problem is that I cannot build the module that tries to use H5Fcreate. Here is the console output from my build attempts:

1>MyProject.obj : error LNK2019: unresolved external symbol __imp__H5Fcreate referenced in function "int __cdecl OnBeginDocument(struct IModuleStruct *)" (?OnBeginDocument@@YAHPAUIModuleStruct@@@Z)
1>MyProject.obj : error LNK2019: unresolved external symbol __imp__H5check_version referenced in function "int __cdecl OnBeginDocument(struct IModuleStruct *)" (?OnBeginDocument@@YAHPAUIModuleStruct@@@Z)
1>C:\MyProject\Release\MyProject.dll : fatal error LNK1120: 2 unresolved externals

Both methods of attempting to link in HDF5 (precompiled vs self-compiled, as described above) produce these exact same errors, so I'm not sure where I'm going wrong.

Many thanks to @HasanKhan and @StevieG, these were helpful tips for n00bs like me. Just to follow up clearly, I did indeed need to add lib filepaths in Linker > Input > Additional Dependencies:

hdf5dll.lib
hdf5_cppdll.lib

I may need to add other lib files if I require other HDF5 features. Also, it turned out that I needed to copy the HDF5 DLLs (from bin) into my system directory (e.g., C:\WINDOWS\System32\) for the plugin to operate correctly at runtime. All good now, thanks!

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