How do you compile static Taglib libraries for Windows?
I don't want to compile dynamic libs, so this question was not useful.
I downloaded taglib and compiled it using:
cmake -DENABLE_STATIC=ON -DENABLE_STATIC_RUNTIME=ON -DWITH_MP4=ON -G "Visual Studio 10"
That generates the Visual Studio solutions and I can compile the "tag" project which produces tag.lib in taglib/Release.
The problem comes when I try to use the library in a test application - nothing much, just a simple test:
#include "stdafx.h"
#include "fileref.h"
int _tmain(int argc, _TCHAR* argv[])
{
TagLib::FileRef d("");
return 0;
}
I get the following Linker errors:
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::File开发者_开发百科Name,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
Can somebody please give me an idea as to what's going on here?
The following are the preprocessor defines in the tag project:
WIN32
_WINDOWS
NDEBUG
HAVE_CONFIG_H
_CRT_SECURE_NO_DEPRECATE
_CRT_NONSTDC_NO_DEPRECATE
TAGLIB_STATIC
CMAKE_INTDIR="Release"
For those who have had this problem: I fixed it by defining TAGLIB_STATIC in the test project:
#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;
}
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