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Visual Studio150
Hello,



I wrote a DLL which doesn't use MFC and is plain C and C++ (not .net).

The debug version is working well, but when I am trying to compile for

release, it comes with the following linker error:







libcpmtd.lib(xdebug.obj) : error LNK2019: unresolved external symbol

__malloc_dbg referenced in function "void * __cdecl operator new(unsigned

int,struct std::_DebugHeapTag_t const &,char *,int)"

(??2@YAPAXIABU_DebugHeapTag_t@std@@PADH@Z)



libcpmtd.lib(xdebug.obj) : error LNK2019: unresolved external symbol

__free_dbg referenced in function "void __cdecl operator delete(void

*,struct std::_DebugHeapTag_t const &,char *,int)"

(??3@YAXPAXABU_DebugHeapTag_t@std@@PADH@Z)







What is the problem and how cam I solve it?







Best regards


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ma wrote:

I think you have a bad mix of runtime libraries. Firstly, I'd make sure that

all release variants use the multithreaded DLL runtime and all debug

variants use the multithreaded debug DLL runtime. This has to be done for

both the programs and the DLL builds!

Other than that, above message suggests that you are linking a debug runtime

(note the D in libcpmtd.lib above), which is clearly an inconsistency. This

setting might be embedded in an object file (via #pragma comment(lib, ..))

so you should also recompile all.



Uli



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