How to solve the Compiling Matlab Mex File Error for LibQP?

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I need to use Libqp (LIBRARY FOR QUADRATIC PROGRAMMING) for my project in Matlab. I am running the code on Windows 7 64 bit, Matlab R2011b. I have downloaded the library and when I want to comiple it according to the simple inctructions:

Run Matlab and go to the folder libqp_root/matlab
cd libqp_root/matlab

Compile mex files by running
libqp_compile

I get the following errors:

VB

libqp_gsmo_mex.c
libqp_gsmo_mex.c(75) : warning C4267: '=' : conversion from 'size_t' to 'uint32_t', possible loss of data
libqp_gsmo_mex.c(107) : error C2275: 'libqp_state_T' : illegal use of this type as an expression
        C:/Users/Downloads/libqp/lib/libqp.h(54) : see declaration of 'libqp_state_T'
libqp_gsmo_mex.c(107) : error C2146: syntax error : missing ';' before identifier 'state'
libqp_gsmo_mex.c(107) : error C2065: 'state' : undeclared identifier
libqp_gsmo_mex.c(108) : error C2065: 'state' : undeclared identifier
libqp_gsmo_mex.c(109) : error C2440: '=' : cannot convert from 'libqp_state_T' to 'int'
libqp_gsmo_mex.c(115) : error C2065: 'state' : undeclared identifier
libqp_gsmo_mex.c(115) : error C2224: left of '.QP' must have struct/union type
libqp_gsmo_mex.c(115) : error C2198: 'mxCreateDoubleScalar' : too few arguments for call
libqp_gsmo_mex.c(116) : error C2065: 'state' : undeclared identifier
libqp_gsmo_mex.c(116) : error C2224: left of '.exitflag' must have struct/union type
libqp_gsmo_mex.c(116) : error C2198: 'mxCreateDoubleScalar' : too few arguments for call
libqp_gsmo_mex.c(117) : error C2065: 'state' : undeclared identifier
libqp_gsmo_mex.c(117) : error C2224: left of '.nIter' must have struct/union type
libqp_gsmo_mex.c(117) : error C2198: 'mxCreateDoubleScalar' : too few arguments for call

  C:\PROGRA~1\MATLAB\R2011B\BIN\MEX.PL: Error: Compile of 'libqp_gsmo_mex.c' failed.

Any pointers appreciated.

Posted 24-Sep-13 16:51pm

lilyNaz

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The_Inventor 28-Sep-13 7:26am

Are you able to show us the code from libqp_gsmo_mex.c, but It seems that you have used a string to initialize an unsigned 32 bit integer, and line 107 has some serious issues, that has affected the code below it.

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Member 10528336 · Answer 1 · 2014-01-16T03:58:00

Solution 1

hiii
i got the same problem here
i noticed that you post that five monthes ago

did you find any solution for that problem

i will be glad if you could help me
thanks #

Posted 16-Jan-14 3:58am

Member 10528336

SalahiHalilAltinci · Answer 2 · 2014-03-30T01:45:00

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Hey,

I have found a solution. I have tried to compile them in matlab too but no success. So i decided to compile them on Visual Studio 2010.

I came up a solution on StackOverFlow that explains how to compile MEX files on Visual Studio <a href="http://stackoverflow.com/a/16718578">LINK</a>. I followed the steps and compiled both MEX files.

libqp_splx_mex.c easily compiled but my compiler produced strange errors when i tried to compile libqp_gsmo_mex.c file but when i move "libqp_state_T state;" declaration to top it resolved.

I hope it helps.