About mex function problem

4 次查看（过去 30 天）
thu nguyen
thu nguyen 2019-12-1
评论： Rahul Pathak 2020-5-8
Hi everyone,
I recieved the code using mex function. When I run it on Matlab, it occured errors as below
Error using mex
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x0):
multiple definition of `vsnprintf'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x3b0): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x10):
multiple definition of `getc'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x3c0): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x40):
multiple definition of `putc'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x3f0): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x70):
multiple definition of `getchar'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x420): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0xa0):
multiple definition of `putchar'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x450): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0xe0):
multiple definition of `fopen64'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x490): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0xf0):
multiple definition of `ftello64'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x4a0): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x120):
multiple definition of `vsnwprintf'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x4d0): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x130):
multiple definition of `strtof'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x4e0): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x150):
multiple definition of `wcstof'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x500): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x170):
multiple definition of `_Exit'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x520): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x180):
multiple definition of `llabs'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x530): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x1a0):
multiple definition of `atoll'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x550): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x1b0):
multiple definition of `lltoa'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x560): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x1c0):
multiple definition of `ulltoa'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x570): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x1d0):
multiple definition of `wtoll'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x580): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x1e0):
multiple definition of `lltow'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x590): first defined here
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\c_mexapi_version.obj:c_mexapi_version.c:(.text+0x1f0):
multiple definition of `ulltow'
C:\Users\BAO_MA~1\AppData\Local\Temp\mex_85703934924329_1184\lbfgsC.obj:lbfgsC.c:(.text+0x5a0): first defined here
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libm.a when searching for -lm
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libmingw32.a when searching for -lmingw32
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libmoldname.a when searching for -lmoldname
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libmingwex.a when searching for -lmingwex
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libmsvcrt.a when searching for -lmsvcrt
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libuser32.a when searching for -luser32
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libkernel32.a when searching for -lkernel32
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libadvapi32.a when searching for -ladvapi32
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libshell32.a when searching for -lshell32
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libmingw32.a when searching for -lmingw32
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libmoldname.a when searching for -lmoldname
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libmingwex.a when searching for -lmingwex
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
skipping incompatible C:/HEN_HOUSE/gnu/lib\libmsvcrt.a when searching for -lmsvcrt
C:/ProgramData/MATLAB/SupportPackages/R2019b/3P.instrset/mingw_w64.instrset/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
i386 architecture of input file `C:/HEN_HOUSE/gnu/lib/dllcrt2.o' is incompatible with i386:x86-64 output
C:/HEN_HOUSE/gnu/lib/dllcrt2.o: In function `__dll_exit':
d:/src/mingw/build/runtime/../../runtime/dllcrt1.c:140: undefined reference to `_free'
d:/src/mingw/build/runtime/../../runtime/dllcrt1.c:148: undefined reference to `_fflush'
C:/HEN_HOUSE/gnu/lib/dllcrt2.o: In function `DllMainCRTStartup':
d:/src/mingw/build/runtime/../../runtime/dllcrt1.c:87: undefined reference to `_DllMain@12'
d:/src/mingw/build/runtime/../../runtime/dllcrt1.c:56: undefined reference to `_malloc'
d:/src/mingw/build/runtime/../../runtime/dllcrt1.c:67: undefined reference to `__pei386_runtime_relocator'
d:/src/mingw/build/runtime/../../runtime/dllcrt1.c:74: undefined reference to `___main'
d:/src/mingw/build/runtime/../../runtime/dllcrt1.c:59: undefined reference to `__errno'
C:/HEN_HOUSE/gnu/lib/dllcrt2.o: In function `atexit':
d:/src/mingw/build/runtime/../../runtime/dllcrt1.c:166: undefined reference to `___dllonexit'
C:/HEN_HOUSE/gnu/lib/dllcrt2.o: In function `_onexit':
d:/src/mingw/build/runtime/../../runtime/dllcrt1.c:182: undefined reference to `___dllonexit'
collect2.exe: error: ld returned 1 exit status
I tried to understand it and fixed but I did not resolve.
I also represented the code here.
#include <math.h>
#include "mex.h"
/* See lbfgs.m for details! */
/* This function may not exit gracefully on bad input! */
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
/* Variable Declarations */
double *s, *y, *g, *H, *d, *ro, *alpha, *beta, *q, *r;
int nVars,nSteps,lhs_dims[2];
double temp;
int i,j;
/* Get Input Pointers */
g = mxGetDoubles(prhs[0]);
s = mxGetDoubles(prhs[1]);
y = mxGetDoubles(prhs[2]);
H = mxGetDoubles(prhs[3]);
/* Compute number of variables (p), rank of update (d) */
nVars = mxGetDimensions(prhs[1])[0];
nSteps = mxGetDimensions(prhs[1])[1];
/* Allocated Memory for Function Variables */
ro = mxCalloc(nSteps,sizeof(double));
alpha = mxCalloc(nSteps,sizeof(double));
beta = mxCalloc(nSteps,sizeof(double));
q = mxCalloc(nVars*(nSteps+1),sizeof(double));
r = mxCalloc(nVars*(nSteps+1),sizeof(double));
/* Set-up Output Vector */
lhs_dims[0] = nVars;
lhs_dims[1] = 1;
plhs[0] = mxCreateNumericArray(2,lhs_dims,mxDOUBLE_CLASS,mxREAL);
d = mxGetDoubles(plhs[0]);
/* ro = 1/(y(:,i)'*s(:,i)) */
for(i=0;i<nSteps;i++)
{
temp = 0;
for(j=0;j<nVars;j++)
{
temp += y[j+nVars*i]*s[j+nVars*i];
}
ro[i] = 1/temp;
}
/* q(:,k+1) = g */
for(i=0;i<nVars;i++)
{
q[i+nVars*nSteps] = g[i];
}
for(i=nSteps-1;i>=0;i--)
{
/* alpha(i) = ro(i)*s(:,i)'*q(:,i+1) */
alpha[i] = 0;
for(j=0;j<nVars;j++)
{
alpha[i] += s[j+nVars*i]*q[j+nVars*(i+1)];
}
alpha[i] *= ro[i];
/* q(:,i) = q(:,i+1)-alpha(i)*y(:,i) */
for(j=0;j<nVars;j++)
{
q[j+nVars*i]=q[j+nVars*(i+1)]-alpha[i]*y[j+nVars*i];
}
}
/* r(:,1) = q(:,1) */
for(i=0;i<nVars;i++)
{
r[i] = H[0]*q[i];
}
for(i=0;i<nSteps;i++)
{
/* beta(i) = ro(i)*y(:,i)'*r(:,i) */
beta[i] = 0;
for(j=0;j<nVars;j++)
{
beta[i] += y[j+nVars*i]*r[j+nVars*i];
}
beta[i] *= ro[i];
/* r(:,i+1) = r(:,i) + s(:,i)*(alpha(i)-beta(i)) */
for(j=0;j<nVars;j++)
{
r[j+nVars*(i+1)]=r[j+nVars*i]+s[j+nVars*i]*(alpha[i]-beta[i]);
}
}
/* d = r(:,k+1) */
for(i=0;i<nVars;i++)
{
d[i]=r[i+nVars*nSteps];
}
/* Free Memory */
mxFree(ro);
mxFree(alpha);
mxFree(beta);
mxFree(q);
mxFree(r);
}
I have been using Matlab 2019b and mexw64.
Anybody can help me. Thank you so much.
Thu Nguyen
  9 个评论
显示 7更早的评论
thu nguyen
thu nguyen 2020-4-20
I have not fixed the problem yet.
Can you help me to solve this?
Thank you for your consideration.
Rahul Pathak
Rahul Pathak 2020-5-8
I am also facing the similar type of problem and I am working on 2019b ver.
Kindly help me.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

James Tursa
James Tursa 2020-4-25
This code is incorrect:
int nVars,nSteps,lhs_dims[2];
:
plhs[0] = mxCreateNumericArray(2,lhs_dims,mxDOUBLE_CLASS,mxREAL);
The int type is almost certainly a 32-bit integer on your system, but for 64-bit compiles that dimension array needs to be mwSize (which probably converts to a 64-bit size_t integer type). So a mismatch. The code needs to be this:
mwSize lhs_dims[2];

类别

在 Help Center 和 File Exchange 中查找有关 Introduction to Installation and Licensing 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by