1 problem

An old model uses matlab2011b Version modeling , At that time 32 Bit system ,mex The generated executable program is *.mexw32 Of , With the upgrading of computers , Turned into 64 Bit system , Therefore, the report cannot be found s-fun Error of ;

2 solve

2.1 Compile the generated *.mexw64 The target file of

（1） install VS2008（ Corresponding Matlab2011b edition ）, Be careful VS The version of must be more than matlab Version of is low , Otherwise, I can't recognize .

The version can be as follows MATLAB See which version is supported under the installation directory VS：

D:\App\MatlabR2011b\bin\win64\mexopts

（2） Set up mex Parameters ：

（3） compile  

>> mex Sfun_usLookup_xy_us.c
    Creating library  C:\Users\js\AppData\Local\Temp\mex_40Cy3a\templib.x  And the object  C:\Users\js\AppData\Local\Temp\mex_40Cy3a\templib.exp 
xx1.obj : error LNK2019:  Unresolved external symbols  xx_xy_us, The sign is in the function  mdlOutputs  Cited in  
xx1.mexw64 : fatal error LNK1120: 1  Unresolved external commands  

In this case, it is impossible to find xx_xy_us File corresponding to function

Way ： Copy the corresponding files to the same directory , Add compilation at the same time ,xx_xy_u Functions are included in xx_ft_simu.c in .

>> xxx1.c xx_ft_simu.c

Successfully compiled *.mexw64 The target file of

If it cannot be found during compilation .h The file of , Will .h Files in VC2008 Under the directory of ：

D:\Apps\38_Microsoft Visual Studio_2008\VC\include

2.2 Install virtual machine

Install in virtual machine 32 position win System , In this way, it can be used when running the model *.mexw32 The target file of .

  The virtual machine needs to pass the pure version before installing the system xp System file boot XTC_GHOST_WIN10_32_2021_6.iso; Then install the virtual machine system GHOST_WIN10_X86_VDL_2022_203072.iso