CODEWITHSUNDEEP
c++windowsvisual-studiovisual-c++
AlexandruC
AlexandruC

Reputation: 3637

Linker errors while migrating from x32 to x64

I have recently migrated a project from x32 to x64 in VS professional 2008 and I'm getting this weird linker errors:

error LNK2001: unresolved external symbol __imp_PostMessageW
error LNK2001: unresolved external symbol __imp_FlushFileBuffers
error LNK2001: unresolved external symbol __imp_WriteFile
error LNK2001: unresolved external symbol __imp_WaitForSingleObject
error LNK2001: unresolved external symbol __imp_SetFilePointer
error LNK2001: unresolved external symbol __imp_EnterCriticalSection
...

And more of this nature. I am including shlwapi.lib in the linker. Running on Windows 7 x64.

Additional Dependencies:

enter image description here

Upvotes: 2

Views: 2001

Answers (2)

AlexandruC
AlexandruC

Reputation: 3637

The solution for my problem was setting Linker > General > Additional Library Directories with "C:\Program Files\Microsoft SDKs\Windows\v6.0A\Lib\x64" instead of "C:\Program Files\Microsoft SDKs\Windows\v6.0A\Lib".

Upvotes: 4

Hans Passant
Hans Passant

Reputation: 941208

Ensure that the x64 configuration is selected. Right-click your project in the Solution Explorer window, Properties, Linker, Input. Click on the Additional Dependencies box and click the button that appears.

enter image description here

This is what it should look like if the project is configured correctly. Note how the "Inherit" checkbox is ticked and how the inherited values list the standard SDK libraries. Like kernel32.lib, the link library that has the definition for __imp_FlushFileBuffers, etc. If it doesn't look like this in your project then you'll get these linker errors.

Upvotes: 1

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