unresolved external symbol with shared library build

[jarrettchisholm]

I'm not sure if this is the right place to put this ( I wasn't able to find a mailing list), so please forgive me if this is the wrong place.

I'm getting various unresolved external symbol errors when I try to compile on Windows 10 against the shared library build of BGFX.

I generated the Visual Studio project files using Genie, with the shared library option specified. I have the bgfx-shared-libRelease Binaries built successfully using Visual Studio 2015.

if I remove the bgfx-shared-libRelease Library from my build tool (SConstruct), I get the same unresolved external symbol errors. It's like the symbols aren't being recognized.

does anyone have any suggestions I might try?

Here's the open I'm seeing (GraphicsEngine is my CPP file that is making calls into BGFX):

GraphicsEngine.obj : error LNK2019: unresolved external symbol "bool __cdecl bgfx::init(enum bgfx::RendererType::Enum,unsigned short,unsigned short,struct bgfx::CallbackI *,struct bx::AllocatorI *)" (?init@bgfx@@YA_NW4Enum@RendererType@1@GGPAUCallbackI@1@PAUAllocatorI@bx@@@Z) referenced in function "public: __thiscall graphics::bgfx::GraphicsEngine::GraphicsEngine(unsigned __int64)" (??0GraphicsEngine@bgfx@graphics@@QAE@_K@Z)
GraphicsEngine.obj : error LNK2019: unresolved external symbol "void __cdecl bgfx::shutdown(void)" (?shutdown@bgfx@@YAXXZ) referenced in function "public: virtual __thiscall graphics::bgfx::GraphicsEngine::~GraphicsEngine(void)" (??1GraphicsEngine@bgfx@graphics@@UAE@XZ)
GraphicsEngine.obj : error LNK2019: unresolved external symbol "void __cdecl bgfx::reset(unsigned int,unsigned int,unsigned int)" (?reset@bgfx@@YAXIII@Z) referenced in function "public: __thiscall graphics::bgfx::GraphicsEngine::GraphicsEngine(unsigned __int64)" (??0GraphicsEngine@bgfx@graphics@@QAE@_K@Z)
GraphicsEngine.obj : error LNK2019: unresolved external symbol "unsigned int __cdecl bgfx::frame(void)" (?frame@bgfx@@YAIXZ) referenced in function "public: virtual void __thiscall graphics::bgfx::GraphicsEngine::render(float)" (?render@GraphicsEngine@bgfx@graphics@@UAEXM@Z)
GraphicsEngine.obj : error LNK2019: unresolved external symbol "void __cdecl bgfx::setDebug(unsigned int)" (?setDebug@bgfx@@YAXI@Z) referenced in function "public: __thiscall graphics::bgfx::GraphicsEngine::GraphicsEngine(unsigned __int64)" (??0GraphicsEngine@bgfx@graphics@@QAE@_K@Z)
GraphicsEngine.obj : error LNK2019: unresolved external symbol "void __cdecl bgfx::dbgTextClear(unsigned char,bool)" (?dbgTextClear@bgfx@@YAXE_N@Z) referenced in function "public: virtual void __thiscall graphics::bgfx::GraphicsEngine::render(float)" (?render@GraphicsEngine@bgfx@graphics@@UAEXM@Z)
GraphicsEngine.obj : error LNK2019: unresolved external symbol "void __cdecl bgfx::dbgTextPrintf(unsigned short,unsigned short,unsigned char,char const *,...)" (?dbgTextPrintf@bgfx@@YAXGGEPBDZZ) referenced in function "public: virtual void __thiscall graphics::bgfx::GraphicsEngine::render(float)" (?render@GraphicsEngine@bgfx@graphics@@UAEXM@Z)
GraphicsEngine.obj : error LNK2019: unresolved external symbol "void __cdecl bgfx::setViewRect(unsigned char,unsigned short,unsigned short,unsigned short,unsigned short)" (?setViewRect@bgfx@@YAXEGGGG@Z) referenced in function "public: virtual void __thiscall graphics::bgfx::GraphicsEngine::render(float)" (?render@GraphicsEngine@bgfx@graphics@@UAEXM@Z)
GraphicsEngine.obj : error LNK2019: unresolved external symbol "void __cdecl bgfx::setViewClear(unsigned char,unsigned short,unsigned int,float,unsigned char)" (?setViewClear@bgfx@@YAXEGIME@Z) referenced in function "public: __thiscall graphics::bgfx::GraphicsEngine::GraphicsEngine(unsigned __int64)" (??0GraphicsEngine@bgfx@graphics@@QAE@_K@Z)
GraphicsEngine.obj : error LNK2019: unresolved external symbol "unsigned int __cdecl bgfx::touch(unsigned char)" (?touch@bgfx@@YAIE@Z) referenced in function "public: virtual void __thiscall graphics::bgfx::GraphicsEngine::render(float)" (?render@GraphicsEngine@bgfx@graphics@@UAEXM@Z)
build\darkhorizon.exe : fatal error LNK1120: 10 unresolved externals
scons: *** [build\darkhorizon.exe] Error 1120
scons: building terminated because of errors.

[bkaradzic]

When you're dynamically linking, you have to use C99 API, C++ API doesn't have DLL import/export.

Dynamic linking will be fixed eventually. Right now it exist mostly to support other language bindings.

[jarrettchisholm]

oh I see, thanks @bkaradzic.

[sammamacha]

Has this been fixed yet or is it still in the works? Had this same issue.

[SuadoCowboy]

as 2024 and I'm wondering too