Thread Subject: Problems linking MEX'ed object files.

Hello
First of all, should mention that I'm using MATLAB 6.5 release 13.
I'm trying to MEX some C-code. For this purpose, I've written the
proper interface. I found out early on, that the lcc C version 2.4
included with MATLAB 6.5, was outdated for my purpose. Therefore I
switched to MCSV6.0 (and also installed Watcom 10.6). If I use the -c
(compile only) option, I can compile my code fine to .obj's. IF I try
to link it however, I get this:

Warning: Ignoring invalid option
'LIBPATH:"C:\MATLAB6p5\extern\lib\win32\microsoft\msvc60"
Warning: Cannot locate 'libmx.lib'; skipping -- fuzzy name matching
may not work
Warning: Cannot extract external symbols from 'libmx.lib' -- fuzzy
linking may not work
----same warning repeats for the 3 other files needed (libmex.lib,
libmatlb.lib and libmat.lib)----
Warning! EW1008: cannot open libmx.lib : No such file or directory
----same warning repeats for the 3 other files needed----
Error! E2028: mxGetNumberofElements_ is an undefined reference
----same error repeats for the other mx-types I use----

It doesn't take a genius to see what happens, but why? The needed
files ARE located in the LIBPATH path, so why does it "ignore invalid
option"?

Also, if I try to use Watcom to link it, I get the same problem
(albeit in less details. It just tells me, that the references are
undefined).

And while we are at it. It also fails to include a .lib file, that I
added to my compilation. I've tried adding it after my .c-files
simply as libname.lib and also tried adding it, when simply linking
the objects. Doesn't use it.

Wonder if it's allowed to bump posts?

Anyway, I added the .lib files to the list in my mexopts .bat file
and put the .bat file in the library where I link my objects. It now
finds .lib files, but it still doesn´t recoignize the functions. I
get:

Error! E2028: mxGetNumberOfElements_ is an undefined reference
Error! E2028: mxCalloc_ is an undefined reference
Error! E2028: mxGetString_ is an undefined reference
Error! E2028: mexWarnMsgTxt_ is an undefined reference
Error! E2028: ffiopn_ is an undefined reference
Error! E2028: ffgipr_ is an undefined reference
Error! E2028: ffgics_ is an undefined reference
Error! E2028: ffgpv_ is an undefined reference
Error! E2028: ffclos_ is an undefined reference
Error! E2028: ffwldp_ is an undefined reference
Error! E2028: fftplt_ is an undefined reference
Error! E2028: ffmnhd_ is an undefined reference
Error! E2028: ffukyj_ is an undefined reference
Error! E2028: ffukye_ is an undefined reference
Error! E2028: LoadElt_ is an undefined reference
Error! E2028: ffopentest_ is an undefined reference
Error! E2028: ffgnrw_ is an undefined reference
Error! E2028: ffukys_ is an undefined reference
Error! E2028: ffrprt_ is an undefined reference
Error! E2028: ffrsim_ is an undefined reference
Error! E2028: ffppre_ is an undefined reference
Error! E2028: ffgtvf_ is an undefined reference
Error! E2028: ffghdn_ is an undefined reference
Error! E2028: ffthdu_ is an undefined reference
Error! E2028: ffgkys_ is an undefined reference
Error! E2028: ffcmsg_ is an undefined reference
Error! E2028: ffcopy_ is an undefined reference
Error! E2028: ffmahd_ is an undefined reference
Error! E2028: ffgkye_ is an undefined reference
Error! E2028: ffgtam_ is an undefined reference
Error! E2028: ffgtnm_ is an undefined reference
Error! E2028: GetValInTable_ is an undefined reference
Error! E2028: erf_ is an undefined reference
Error! E2028: ffgerr_ is an undefined reference
Error! E2028: ffgmsg_ is an undefined reference
Error! E2028: ffpmsg_ is an undefined reference
Error! E2028: setall_ is an undefined reference
Error! E2028: ignlgi_ is an undefined reference
Error! E2028: rint_ is an undefined reference
Error! E2028: ffgcv_ is an undefined reference
Error! E2028: ffpcn_ is an undefined reference
Error! E2028: ffpdat_ is an undefined reference
Error! E2028: ffgstm_ is an undefined reference
Error! E2028: ffphis_ is an undefined reference
Error! E2028: ffukls_ is an undefined reference
Error! E2028: ffuky_ is an undefined reference
Error! E2028: ffgcvd_ is an undefined reference
Error! E2028: ffukyd_ is an undefined reference
Error! E2028: ffpunt_ is an undefined reference
Error! E2028: ffghsp_ is an undefined reference
Error! E2028: ffgrec_ is an undefined reference
Error! E2028: ffgnxk_ is an undefined reference
Error! E2028: ffflus_ is an undefined reference
Error! E2028: ffflnm_ is an undefined reference
Error! E2028: ffgtcl_ is an undefined reference
Error! E2028: ffgcnn_ is an undefined reference
Error! E2028: ffgkyn_ is an undefined reference
Error! E2028: ffgkyj_ is an undefined reference
file grimex.obj(C:\MATLAB6p5\work\grimex\grimex.c): undefined symbol
mxGetNumberOfElements_
file grimex.obj(C:\MATLAB6p5\work\grimex\grimex.c): undefined symbol
mxCalloc_
file grimex.obj(C:\MATLAB6p5\work\grimex\grimex.c): undefined symbol
mxGetString_
file grimex.obj(C:\MATLAB6p5\work\grimex\grimex.c): undefined symbol
mexWarnMsgTxt_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffiopn_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffgipr_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffgics_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffgpv_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffclos_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffwldp_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol fftplt_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffmnhd_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffukyj_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffukye_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol LoadElt_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffopentest_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffgnrw_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffukys_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffrprt_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffrsim_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffppre_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffgtvf_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffghdn_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffthdu_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffgkys_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffcmsg_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffcopy_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffmahd_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffgkye_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffgtam_
file GRILib_DataIO.obj(C:\MATLAB6p5\work\grimex\GRILib_DataIO.c):
undefined symbol ffgtnm_
file GRILib_LensSimu.obj(C:\MATLAB6p5\work\grimex\GRILib_LensSimu.c):
undefined symbol GetValInTable_
file GRILib_LensSimu.obj(C:\MATLAB6p5\work\grimex\GRILib_LensSimu.c):
undefined symbol erf_
file GRILib_LensSimu.obj(C:\MATLAB6p5\work\grimex\GRILib_LensSimu.c):
undefined symbol ffwldp_
file GRI_BuildLens.obj(C:\MATLAB6p5\work\grimex\GRI_BuildLens.c):
undefined symbol LoadElt_
file GRI_BuildLens.obj(C:\MATLAB6p5\work\grimex\GRI_BuildLens.c):
undefined symbol ffukye_
file GRI_BuildLens.obj(C:\MATLAB6p5\work\grimex\GRI_BuildLens.c):
undefined symbol ffclos_
file GRILib_Errors.obj(C:\MATLAB6p5\work\grimex\GRILib_Errors.c):
undefined symbol ffgerr_
file GRILib_Errors.obj(C:\MATLAB6p5\work\grimex\GRILib_Errors.c):
undefined symbol ffgmsg_
file GRILib_Errors.obj(C:\MATLAB6p5\work\grimex\GRILib_Errors.c):
undefined symbol ffpmsg_
file GRILib_Errors.obj(C:\MATLAB6p5\work\grimex\GRILib_Errors.c):
undefined symbol ffcmsg_
file GRILib_Math.obj(C:\MATLAB6p5\work\grimex\GRILib_Math.c):
undefined symbol setall_
file GRILib_randlib.obj(C:\MATLAB6p5\work\grimex\GRILib_randlib.c):
undefined symbol ignlgi_
file GRILib_SpcTools.obj(C:\MATLAB6p5\work\grimex\GRILib_SpcTools.c):
undefined symbol rint_
file GRILib_SpcTools.obj(C:\MATLAB6p5\work\grimex\GRILib_SpcTools.c):
undefined symbol LoadElt_
file GRILib_SpcTools.obj(C:\MATLAB6p5\work\grimex\GRILib_SpcTools.c):
undefined symbol GetValInTable_
file GRILib_SpcTools.obj(C:\MATLAB6p5\work\grimex\GRILib_SpcTools.c):
undefined symbol erf_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgcv_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffpcn_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffukys_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffpdat_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgstm_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffphis_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffukls_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffukye_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgerr_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffcmsg_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffuky_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffghdn_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffthdu_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffmahd_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffcopy_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgcvd_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffukyd_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffpunt_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffpmsg_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffghsp_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgrec_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgnxk_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffflus_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffflnm_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgkys_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgnrw_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgtcl_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgcnn_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgkyn_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffgkyj_
file
GRILib_FitsTools.obj(C:\MATLAB6p5\work\grimex\GRILib_FitsTools.c):
undefined symbol ffmnhd_

Which is basicly ALL the functions defined in the .lib files as well
as a few defined in code and included (without giving warnings during
compilation)

Hi,

I have had a problem similar to yours; although using Intel Fortran
compiler. I couldn't get it to recognise linked objects.

I found it to be sensitive to the order in which files were specified
in the mex command:

i used (e.g)
mex -g pvl.f forces.f dmods.f

which wouldn't link the modules contained in dmods.f which are used
in pvl.f

In the end, I used
mex -g dmods.f pvl.f forces.f
to create intermediate objects with the mex compiler, then the
original command:
mex -g pvl.f forces.f dmods.f
and this worked fine.

I'm not a specialist; so am sorry if this is incorrect- but it might
be worthwhile trying!

good luck!

Tom Clark wrote:
> I found it to be sensitive to the order in which files were
> specified
> in the mex command:

Hi

I tried rearranging the files in a way that made sense (given from
what functions it seemed to be missing and where these were located),
but it made no difference. Then I just tried arranging them randomly
and again, it made no impact (except on the order in which they are
displayed in the error log:p ).
Could be that there is a magical way of arranging them, but if it is
truely so random, I guess I am out of look, seeing as I have more
than 10 files. (Which means I can arrange them in 10! different ways,
I guess.)

Well, turns out it is MATLAB 6.5 release 13, which is unable to use
newer compiler/linkers appearently. To explain:

[1] Borland C/C++ version 5.0 in C:\BC5
[2] Digital Visual Fortran version 6.0 in C:\Program Files\Microsoft
Visual Studio
[3] Lcc C version 2.4 in C:\MATLAB6P5\sys\lcc
[4] Microsoft Visual C/C++ version 6.0 in C:\Program Files\Microsoft
Visual Studio
[5] WATCOM C/C++ version 10.6 in C:\WATCOM

If I use the default (lcc) or the Borland (which is from, what,
1995ish?) I can mex yprime.c (example included with MATLAB). If I use
MSVC or WATCOM (both of which are only a few years old) I get the
exact same errors trying to mex yprime.c, as I do when trying to mex
my own large collection of code.

MSVC:
Warning: Ignoring invalid option
'LIBPATH:"C:\MATLAB6p5\extern\lib\win32\microsoft\msvc60"'
Warning: Cannot locate 'libmx.lib'; skipping -- fuzzy name matching
may not work
Warning: Cannot extract external symbols from 'libmx.lib' -- fuzzy
linking may not work
Warning: Cannot locate 'libmex.lib'; skipping -- fuzzy name matching
may not work
Warning: Cannot extract external symbols from 'libmex.lib' -- fuzzy
linking may not work
Warning: Cannot locate 'libmatlb.lib'; skipping -- fuzzy name
matching may not work
Warning: Cannot extract external symbols from 'libmatlb.lib' -- fuzzy
linking may not work
Warning: Cannot locate 'libmat.lib'; skipping -- fuzzy name matching
may not work
Warning: Cannot extract external symbols from 'libmat.lib' -- fuzzy
linking may not work
Warning: Cannot locate 'cfitsio.lib'; skipping -- fuzzy name matching
may not work
Warning: Cannot extract external symbols from 'cfitsio.lib' -- fuzzy
linking may not work
Warning! W1008: cannot open libmx.lib : No such file or directory
Warning! W1008: cannot open libmex.lib : No such file or directory
Warning! W1008: cannot open libmatlb.lib : No such file or directory
Warning! W1008: cannot open libmat.lib : No such file or directory
Warning! W1008: cannot open cfitsio.lib : No such file or directory
Error! E2028: mexWarnMsgTxt_ is an undefined reference
Error! E2028: mexErrMsgTxt_ is an undefined reference
Error! E2028: mxGetM_ is an undefined reference
Error! E2028: mxGetN_ is an undefined reference
Error! E2028: mxIsDouble_ is an undefined reference
Error! E2028: mxIsComplex_ is an undefined reference
Error! E2028: mxCreateDoubleMatrix_ is an undefined reference
Error! E2028: mxGetPr_ is an undefined reference
file yprime.obj(C:\MATLAB6p5\extern\examples\mex\yprime.c): undefined
symbol mexWarnMsgTxt_
file yprime.obj(C:\MATLAB6p5\extern\examples\mex\yprime.c): undefined
symbol mexErrMsgTxt_
file yprime.obj(C:\MATLAB6p5\extern\examples\mex\yprime.c): undefined
symbol mxGetM_
file yprime.obj(C:\MATLAB6p5\extern\examples\mex\yprime.c): undefined
symbol mxGetN_
file yprime.obj(C:\MATLAB6p5\extern\examples\mex\yprime.c): undefined
symbol mxIsDouble_
file yprime.obj(C:\MATLAB6p5\extern\examples\mex\yprime.c): undefined
symbol mxIsComplex_
file yprime.obj(C:\MATLAB6p5\extern\examples\mex\yprime.c): undefined
symbol mxCreateDoubleMatrix_
file yprime.obj(C:\MATLAB6p5\extern\examples\mex\yprime.c): undefined
symbol mxGetPr_

WATCOM:

Error! E1073: Invalid option '-7'
Error: Compiler returned a bad status compiling "yprime.c"
 
  C:\MATLAB6P5\BIN\WIN32\MEX.PL: Error: Compile of 'yprime.c' failed.

(Ah, btw, worth to mention, that I need the newer compilers/linkers
to use the code at all. Several newer types etc. used in it. So any
help would still be highly sought after.)

Are you sure that something like Borland c++ can't get it done? I
had this same problem as you. I have Visual Studio.net 2005 and it
is not compatabile with current versions of Matlab as far as I know.
I ended up finding a free version of the Borland c++ compiler. (I
googled free borland c++ builder). Now obviously we may be compiling
different codes, but if nothing else is working it may be worth a
shot. All of my files are now compiling, since previously, I only
had the internal lcc compiler which will not even compile a *.cpp
file. Well you said *any* help would be sought after, so I'm not
sure this was much, but it's an attempt.

Good luck,

Marty

Nicolai Brejnholt wrote:
>
>
> (Ah, btw, worth to mention, that I need the newer compilers/linkers
> to use the code at all. Several newer types etc. used in it. So any
> help would still be highly sought after.)

Martin Ozimek wrote:
>
>
> Are you sure that something like Borland c++ can't get it done? I
> had this same problem as you. I have Visual Studio.net 2005 and it
> is not compatabile with current versions of Matlab as far as I
> know.
> I ended up finding a free version of the Borland c++ compiler. (I
> googled free borland c++ builder). Now obviously we may be
> compiling
> different codes, but if nothing else is working it may be worth a
> shot. All of my files are now compiling, since previously, I only
> had the internal lcc compiler which will not even compile a *.cpp
> file. Well you said *any* help would be sought after, so I'm not
> sure this was much, but it's an attempt.
>
> Good luck,
>
> Marty
>

Martin, Microsoft Visual C++ 2005 has been supported since MATLAB 7.2
(R2006a), which was released in March of 2006.

Sincerely,
Eric Sampson
The MathWorks, Inc.

Eric Sampson wrote:
>
>
> Martin Ozimek wrote:
>>
>>
>> Are you sure that something like Borland c++ can't get it done?
> I
>> had this same problem as you. I have Visual Studio.net 2005
and
> it
>> is not compatabile with current versions of Matlab as far as I
>> know.
>> I ended up finding a free version of the Borland c++ compiler.
> (I
>> googled free borland c++ builder). Now obviously we may be
>> compiling
>> different codes, but if nothing else is working it may be worth
a
>> shot. All of my files are now compiling, since previously, I
> only
>> had the internal lcc compiler which will not even compile a
*.cpp
>> file. Well you said *any* help would be sought after, so I'm
not
>> sure this was much, but it's an attempt.
>>
>> Good luck,
>>
>> Marty
>>
>
> Martin, Microsoft Visual C++ 2005 has been supported since MATLAB
> 7.2
> (R2006a), which was released in March of 2006.
>
> Sincerely,
> Eric Sampson
> The MathWorks, Inc.
  
Well let me be more clear, my Matlab version is 7.0, and I'm unable
to run Visual Studio.net 2005 through the mex interface, so I was
just going with my own personal experience and not making a company
claim here.