linker errors recompiling the engine

Yustme · Post by **Yustme** » Sat Jan 05, 2008 5:23 pm

Hi,

I'm recompiling the library of the irrlicht engine with the option "Multi-threaded DLL (/MD)".

But i get these 4 linker errors:

Code: Select all

Error 1       error LNK2019: unresolved external symbol __imp___getcwd_dbg referenced in function "public: __thiscall irr::io::CFileList::CFileList(void)" (??0CFileList@io@irr@@QAE@XZ)  CFileList.obj
Error 2 error LNK2001: unresolved external symbol __imp___getcwd_dbg  CFileSystem.obj
Error 3 error LNK2019: unresolved external symbol __imp___fullpath_dbg referenced in function "public: virtual class irr::core::string<char,class irr::core::irrAllocator<char> > __thiscall irr::io::CFileSystem::getAbsolutePath(class irr::core::string<char,class irr::core::irrAllocator<char> > const &)const " (?getAbsolutePath@CFileSystem@io@irr@@UBE?AV?$string@DV?$irrAllocator@D@core@irr@@@core@3@ABV453@@Z)  CFileSystem.obj
Error 4 error LNK2019: unresolved external symbol __imp___CrtSetDbgFlag referenced in function _DllMain@12  Irrlicht.obj
Error 5 fatal error LNK1120: 3 unresolved externals d:\irrlicht-1.4\bin\Win32-visualstudio\Irrlicht.dll 1

If i use "Multi-threaded DEBUG DLL (/MD)" as option, i dont get these errors.

I rather stick with the "Multi-threaded DLL (/MD)" option.

Any idea how to fix these linker errors?

Thanks in advance!

Ico · Post by **Ico** » Sat Jan 05, 2008 6:29 pm

Looks like that specific release build tries to call some debug-only functions somewhere.

You're sure _DEBUG isn't defined somewhere (testing or by accident)?

As it lists DllMain i guess the following #ifdef is true

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#if defined(_DEBUG) && !defined(__GNUWIN32__) && !defined(__BORLANDC__) && !defined (_WIN32_WCE)

as that one is the only #if block there containing any debug code I see atm.

Yustme · Post by **Yustme** » Sat Jan 05, 2008 7:08 pm

Ico wrote:Looks like that specific release build tries to call some debug-only functions somewhere.

You're sure _DEBUG isn't defined somewhere (testing or by accident)?

As it lists DllMain i guess the following #ifdef is true
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#if defined(_DEBUG) && !defined(__GNUWIN32__) && !defined(__BORLANDC__) && !defined (_WIN32_WCE)
as that one is the only #if block there containing any debug code I see atm.

Hi Ice,

I've found a few times "_DEBUG" in "CFileList.cpp" and "CFileSystem.cpp" and i commented those lines.

But the linker errors still remain.

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/*#ifdef _DEBUG
setDebugName("CFileList");
#endif*/

/*#ifdef _DEBUG
	if ( false == ret )
	{
		os::Printer::log("Could not open file. UnZipfile not added", filename, ELL_ERROR);
	}
#endif*/

/*#ifdef _DEBUG
	os::Printer::log("Could not open file. Zipfile not added", filename, ELL_ERROR);
#endif*/

/*#ifdef _DEBUG
	os::Printer::log("Could not open file. Pakfile not added", filename, ELL_ERROR);
#endif*/

Anything else i can do?

luigi2004 · Post by **luigi2004** » Sun Jan 06, 2008 1:36 am

if u think its a define problem then undefine it

there a command for this too
i think #undef

Yustme · Post by **Yustme** » Sun Jan 06, 2008 6:54 pm

luigi2004 wrote:if u think its a define problem then undefine it

there a command for this too
i think #undef

Hi,

I got it fixed thanks to your hint

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case DLL_PROCESS_ATTACH:
			#if defined(_DEBUG) && !defined(__GNUWIN32__) && !defined(__BORLANDC__)
				//_CrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF | _CRTDBG_ALLOC_MEM_DF);
			#endif
			#undef (_DEBUG)
			break;

Ico · Post by **Ico** » Sun Jan 06, 2008 7:54 pm

That #undef won't be global (juts for everything that line of code within that one file). So if you've got some time, try to find the real source of the problem.

Yustme · Post by **Yustme** » Sun Jan 06, 2008 10:46 pm

Ico wrote:That #undef won't be global (juts for everything that line of code within that one file). So if you've got some time, try to find the real source of the problem.

Hi,

I wouldn't know how the source of the problem would look like, even if i am looking at it.

I can't go to the definition of _DEBUG with the vs2005 menu, because it isn't defined (thats why i got the linker errors).

Looking for _DEBUG made me go through the entire project (if i didn't stop the search).

But if you know (or got a hunch) where the source of the problem is (for example file), let me know

Ico · Post by **Ico** » Sun Jan 06, 2008 11:05 pm

Project settings (of release configuration)? There should be an entry for preprocessor settings under "configuration properties" -> "C/C++".

Yustme · Post by **Yustme** » Sun Jan 06, 2008 11:14 pm

Ico wrote:Project settings (of release configuration)? There should be an entry for preprocessor settings under "configuration properties" -> "C/C++".

Hi,

No wonder i couldn't find it! So i was suppose to look in the options ha

Thanks!