error LNK2019: unresolved external symbol __imp_EncodePointer

2015 6 23
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更新时间：2020 9 7
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I am trying to mex a c file, which uses winsock. I use the following command in MATLAB:
mex -v -L"D:\Software\MATLAB\R2014b\sys\lcc64\lcc64\lib64" -lws2_32 -lkernel32 MyFile.cpp
I keep getting the errors:
MSVCRT.lib(crtdll.obj) : error LNK2019: unresolved external symbol __imp_EncodePointer referenced in function pre_c_init MSVCRT.lib(atonexit.obj) : error LNK2001: unresolved external symbol __imp_EncodePointer MSVCRT.lib(crtdll.obj) : error LNK2019: unresolved external symbol __imp_DecodePointer referenced in function _CRT_INIT MSVCRT.lib(atonexit.obj) : error LNK2001: unresolved external symbol __imp_DecodePointer
As I understand it EncodePointer and DecodePointer are contained in the kernel32.lib file, but even when I link this file with -lkernel32, I still have no luck!

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回答（1 个）

Anthony Poulin
Anthony Poulin 2015-6-24

0 个投票

Hello,
Do you want to compile a mex file in 64 bits with a library in 32bits?
I think, this is not possible (I never succeed to do it).
You have to include the same library but in 64bits.

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kazinkie
kazinkie 2015-6-24
Windows naming convention sucks here. I am linking to the 64bit versions of these libraries. Although they still have "32" in the library file names, they are 64bit versions of these libraries
Anthony Poulin
Anthony Poulin 2015-6-24
Yes, it sucks!!
Which compiler are you using?
I'm facing smiliar issue. I am using SDK 7.1 compiler

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