Question

我不想编译动态库，因此this question没用。

我下载了taglib并使用以下方法编译它：

cmake -DENABLE_STATIC=ON -DENABLE_STATIC_RUNTIME=ON -DWITH_MP4=ON -G "Visual Studio 10"

生成Visual Studio解决方案，我可以编译“tag”项目，该项目在taglib / Release中生成tag.lib。

当我尝试在测试应用程序中使用库时出现问题 - 没什么，只是一个简单的测试：

#include "stdafx.h"
#include "fileref.h"

int _tmain(int argc, _TCHAR* argv[])
{
    TagLib::FileRef d("");
    return 0;
}

我收到以下链接器错误：

Error   1   error LNK2001: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall TagLib::FileRef::~FileRef(void)" (__imp_??1FileRef@TagLib@@UAE@XZ)  C:\...\taglib_test\taglib_test\taglib_test.obj  taglib_test
Error   2   error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall TagLib::FileRef::FileRef(class TagLib::FileName,bool,enum TagLib::AudioProperties::ReadStyle)" (__imp_??0FileRef@TagLib@@QAE@VFileName@1@_NW4ReadStyle@AudioProperties@1@@Z)    C:\...\taglib_test\taglib_test\taglib_test.obj  taglib_test
Error   4   error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall TagLib::FileName::FileName(char const *)" (__imp_??0FileName@TagLib@@QAE@PBD@Z) C:\...\taglib_test\taglib_test\taglib_test.obj  taglib_test
Error   3   error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall TagLib::FileName::~FileName(void)" (__imp_??1FileName@TagLib@@QAE@XZ)   C:\...\taglib_test\taglib_test\taglib_test.obj  taglib_test
Error   5   error LNK1120: 4 unresolved externals   C:\...\taglib_test\Release\taglib_test.exe  taglib_test

有人可以告诉我这里发生了什么吗？

以下是标签项目中预处理器的定义：

WIN32
_WINDOWS
NDEBUG
HAVE_CONFIG_H
_CRT_SECURE_NO_DEPRECATE
_CRT_NONSTDC_NO_DEPRECATE
TAGLIB_STATIC
CMAKE_INTDIR="Release"

Answer 1

对于遇到此问题的人：我通过在测试项目中定义TAGLIB_STATIC来修复它：

#include "stdafx.h"

//This should have been generated by the build system in taglib_config.h
//but was not. 
#define TAGLIB_STATIC 
#include "fileref.h"

int _tmain(int argc, _TCHAR* argv[])
{
    TagLib::FileRef d("");
    return 0;
}

如何为Windows编译静态Taglib库？

1 个答案: