Error Lnk2019 Unresolved External Symbol Mexfunction
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Error Lnk2019 Unresolved External Symbol Public
Search Help Trial software unresolved external symbol mexFunction Subject: unresolved external symbol mexFunction From: Stefan Andreevski Stefan Andreevski (view profile) 14 posts Date: 22 Jun, 2009 09:27:01 Message: 1
Error Lnk2019 Unresolved External Symbol Winmain@16 Referenced In Function ___tmaincrtstartup
of 8 Reply to this message Add author to My Watch List View original format Flag as spam Hi guys, I have the following problem: I am working on a grey box identification, for which I had to create a mex function, here is the code: /* Include libraries. */ #include "mex.h" #include "math.h" /* Specify the number of outputs error lnk2019 unresolved external symbol visual studio 2010 here. */ #define NY 1 /* State equations. */ void compute_dx( double *dx, /* Vector of state derivatives (length nx). */ double t, /* Time t (scalar). */ double *x, /* State vector (length nx). */ double *u, /* Input vector (length nu). */ double **p, /* p[j] points to the jth estimated model parameters(a double array).*/ const mxArray *auxvar /* Cell array of additional data. */ ) { double C1, Alfa1; C1 = p[0][0]; Alfa1 = p[1][0]; dx[0] = ( C1*(pow( x[0],Alfa1) )/(0.035*0.25)); } /* Output equations. */ void compute_y( double *y, /* Vector of outputs (length NY). */ double t, /* Time t (scalar). */ double *x, /* State vector (length nx). */ double *u, /* Input vector (length nu). */ double **p, /* p[j] points to the jth estimated model parameters(a double array).*/ const mxArray *auxvar /* Cell array of additional data. */ ) { y[0] = x[0]; } When I try to build the function I have a build error saying that: C:\USERS\USER\APPDATA\LOCAL\TEMP\MEX_KB~1\alpha1C1.obj LINK : error LNK2001: unresolved external symbol mexFunction C:\USERS\USER\APPDATA\L
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Error Lnk2019 Unresolved External Symbol Public __thiscall Referenced In Function _main
Activity Flagged Content Flagged as Spam Help MATLAB Central Community Home MATLAB Answers error lnk2019 unresolved external symbol void __cdecl File Exchange Cody Blogs Newsreader Link Exchange ThingSpeak Anniversary Home Ask Answer Browse More Contributors Recent Activity Flagged Content Flagged error lnk2019 unresolved external symbol main referenced in function __tmaincrtstartup as Spam Help Trial software maarten vaandrager (view profile) 2 questions 2 answers 2 accepted answers Reputation: 5 Vote1 MEX error LNK2019: unresolved external symbol Asked by maarten vaandrager maarten vaandrager (view profile) https://www.mathworks.com/matlabcentral/newsreader/view_thread/254308 2 questions 2 answers 2 accepted answers Reputation: 5 on 8 Jan 2014 Latest activity Commented on by Matthew Gaddes Matthew Gaddes (view profile) 0 questions 0 answers 0 accepted answers Reputation: 0 on 6 May 2015 Accepted Answer by Jorik Jorik (view profile) 0 questions 11 answers 6 accepted answers Reputation: 36 291 views (last 30 days) 291 views (last 30 days) Hi everybody,I need to https://www.mathworks.com/matlabcentral/answers/111767-mex-error-lnk2019-unresolved-external-symbol fix a matlab program that incorporates C code compiled to a mex function. It is likely that the mex functions stopped working when updating Matlab from 32bit to 64bit.when trying to recompile the c code into a mex file I get the following error:mex qpip.c qpip.obj : error LNK2019: unresolved external symbol qpip_sub referenced in function mexFunction qpip.obj : error LNK2019: unresolved external symbol dcopy referenced in function mexFunction qpip.mexw64 : fatal error LNK1120: 2 unresolved externals I did not write the program myself but I should have all the necessary files. The qpip_sub.c and qpip_sub.h and some other files are in the same folder. The dcopy function seems to be part of the the BLAS linear algebra package but I only seem to have blasmap.h.Any ideas what is going wrong? Thanks for the help!(using MSVS2010, MATLAB R2011b, 64bit Windows 7) 0 Comments Show all comments Tags mexlnk201964bit Products MATLAB Related Content 1 Answer Jorik (view profile) 0 questions 11 answers 6 accepted answers Reputation: 36 Vote1 Link Direct link to this answer: https://www.mathworks.com/matlabcentral/answers/111767#answer_120397 Answer by Jorik Jorik (view profile) 0 questions 11 answers 6 accepted answers Reputation: 36 on 9 Jan 2014 Edited by Jorik Jorik (view pr
here for a quick overview of the site Help Center Detailed http://stackoverflow.com/questions/26220193/building-a-matlab-mex-file-in-visual-studio-gives-lnk2019-unresolved-external-s answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the error lnk2019 Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Building a MATLAB mex file in Visual Studio gives “LNK2019 unresolved external symbol _mexPrintf referenced in function mexFunction”? up vote 1 down error lnk2019 unresolved vote favorite I'm using Visual Studio 2012 x64 to build and debug a MATLAB 2014a x64 mex file directly (without using the mex command in MATLAB). I followed the instructions in this question to set up a Visual Studio project named test1. I followed this tutorial to write a simple mex file, test1.cpp: #include