Thread Subject: Lcc and libmwlapack: underscore problem

Hi,

I use Lcc to compile C functions in Matlab V6.1.0

The standart lib libmwlapack.dll in Matlab includes functions spelled without underscores around their name, for exemple dsyev, while lcc generates a call to _dsyev. I have the following error:

sparsesvd.obj .text: undefined reference to '_dsyev'
for
dsyev(jobz,uplo,&n,Vmat,&n,Dvec,workvec,&lwork,&inflapack); in sparsesvd.c
and
void dsyev(char *jobz,char *uplo,int *n,double *a,int *lda,double *w,double *work,int *lwork,int *info); in sparsesvd.h

Am I wrong somewhere?
Any idea to help me?

Thanks a lot!

David

"David Hanau" <hanaud@gmail.com.REMTHIS> wrote in message <h5v1ns$jde$1@fred.mathworks.com>...
> Hi,
>
> I use Lcc to compile C functions in Matlab V6.1.0
>
> The standart lib libmwlapack.dll in Matlab includes functions spelled without underscores around their name, for exemple dsyev, while lcc generates a call to _dsyev. I have the following error:
>
> sparsesvd.obj .text: undefined reference to '_dsyev'
> for
> dsyev(jobz,uplo,&n,Vmat,&n,Dvec,workvec,&lwork,&inflapack); in sparsesvd.c
> and
> void dsyev(char *jobz,char *uplo,int *n,double *a,int *lda,double *w,double *work,int *lwork,int *info); in sparsesvd.h
>

In the MATLAB versions I have available, there are two separate directories for lcc and microsoft, each with their own versions of libmwlapack.lib. Are you, by chance, using the libmwlapack from the microsoft directory instead of the lcc directory?

James Tursa

"James Tursa" <aclassyguy_with_a_k_not_a_c@hotmail.com> wrote in message <h5v4hd$kfb$1@fred.mathworks.com>...
> "David Hanau" <hanaud@gmail.com.REMTHIS> wrote in message <h5v1ns$jde$1@fred.mathworks.com>...
> > Hi,
> >
> > I use Lcc to compile C functions in Matlab V6.1.0
> >
> > The standart lib libmwlapack.dll in Matlab includes functions spelled without underscores around their name, for exemple dsyev, while lcc generates a call to _dsyev. I have the following error:
> >
> > sparsesvd.obj .text: undefined reference to '_dsyev'
> > for
> > dsyev(jobz,uplo,&n,Vmat,&n,Dvec,workvec,&lwork,&inflapack); in sparsesvd.c
> > and
> > void dsyev(char *jobz,char *uplo,int *n,double *a,int *lda,double *w,double *work,int *lwork,int *info); in sparsesvd.h
> >
>
> In the MATLAB versions I have available, there are two separate directories for lcc and microsoft, each with their own versions of libmwlapack.lib. Are you, by chance, using the libmwlapack from the microsoft directory instead of the lcc directory?
>
> James Tursa

I did not have any corresponding lib in the lcc directory. I have used the "import external lib" tool in lcc-Win32 to generate new ones from the DLL.
I copied them in my path and I worked fine.

Thank you for your help!

David