deploying Matlab C++ library to 64 bit

I am currently developing a C++ program to interact with a C++ shared library created with Matlab R2007a compiler. Somehow, I cannot pass the initialization stage. First I call mclInitializeApplication(NULL,0)) and this goes ok. But when I call let's say MyFunctionInitialize() it fails.

Previously this was working but now when I deployed the application on a 64 - bit machine, it does not work anymore. Could the 64 bit environment be a problem?

Alina Badau

Answer 1

[Friedrich]

Hi,

is the target OS of the same type like the OS where the DLL is compiled on? What error do you get?

Answer 2

[Alina Badau]

No, the DLL is compiled on a computer with OS: Windows XP and the taget machine has Windows server 2008 R2

[Friedrich]

You DLL is 32bit right? and the Win Server is 64bit? What error do you get? What do you mean with it fails?

[Alina Badau]

Yes, 32 bit and Win Server 64 bit. I don't get an error. It just returns with false from the initialization call.

if (!MyFunctionInitialize())

message= "could not initialize the library properly";

[Friedrich]

For R2007a server 2008 wasn't a supported OS. Can you run the matrixdriver example from the ML doc? Maybe consider making a dependency walker profile and have a look why the initialisation step fails.

[Alina Badau]

I already run dependency walker on the shared library. It seems that everything is ok.

I will run the example and I will come back with an answer. Thank you!

[Alina Badau]

Can you give me a url for matrixdriver example? I can't find it..

[Friedrich]

Dont run the dep walker on the shared lib. Compile everything into an EXE and then make a RUNTIME PROFILE of that exe. The right steps for this are:

i) choose File -> open and select your application

ii) choose Profile -> start profiling

iii) a window pops up

iv) press okay

v) your applications should start now

vi) after your application finished running investigate the log for hints what went wrong.

You can also:

vii) choose File -> save as

viii) upload the dwi file somewhere an post the link here

[Alina Badau]

I compiled everything into a console application, deployed it on the target machine and first, it said that MSVCR100D.dll is missing. After placing that into exe directory, the application worked. But.. in my C++ program it is a little bit different because it is all packed into a win32 dll, called by a ASP .NET web application. There still fails, even after placing into the path directory MSVCR100D.dll requested before.

Answer 3

[Friedrich]

Sounds like a missing redistributable package for Visual Studio 2010. Please install it on the target machine:

http://www.microsoft.com/download/en/details.aspx?id=5555

Copying DLLs from that package is not a good idea! Since you are running a 32bit application you need the 32bit redist. package.

[Alina Badau]

I installed it, but I still have the same problem.

[Friedrich]

Do you have the dep. walker profile for me so I can have a look?

[Alina Badau]

Can you provide an email address? i have the dwi from the exe.

[Friedrich]

I created a temporary adress: [e-mail]

[Alina Badau]

I sent am email a few seconds ago.

[Friedrich]

The attachment hasn't reached me. Please upload it to some filehoster and post the link to it. E.g.:

http://www.wupload.com/

[Alina Badau]

http://www.wupload.com/file/56861203/TestFunction.dwi

[Friedrich]

This is about your test application which works fine, right? I can see that you still have the DLL copied near the exe. Does your test exe works when deleting the copied DLL's?

[Alina Badau]

No, it doesn't. Here is the dwi from the function without the dlls near the exe:

http://www.wupload.com/file/56872575/TestFunction.dwi

[Friedrich]

Still the same. These DLLs are used

c:\inetpub\wwwroot\release\dropbox\dll output\MSVCR100D.DLL

c:\inetpub\wwwroot\release\dropbox\dll output\MSVCR80.DLL

Normally the entry should similar to:

c:\windows\winsxs\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.4940_none_d08cc06a442b34fc\MSVCR80.DLL

Please completly delete the copied DLLs from the system and do not move it into a different folder.

[Alina Badau]

Sorry, I completely deleted the dlls from the system. Now the app does not fire because "The program can't start because MSVCR100D.dll is missing from your computer.". The only dll the is used in dwi is LoanTapeCashFlow which is the shared library compiled with Matlab.

New upload link:

http://www.wupload.com/file/56878784/TestFunction.dwi

[Friedrich]

So we are back to the actual issue. Missing DLLs on the system. Maybe I was wrong that the 32bit redist is needed. Please install the 64bit in addition:

http://www.microsoft.com/download/en/details.aspx?id=14632

Since the redist. packages provide the DLLs the error should vanish.

[Alina Badau]

I installed it. It is the same.

[Friedrich]

It must be this issue. You can find some stuff in the internet talking about this missing DLL:

http://www.rhyous.com/2010/09/16/avoiding-the-msvcr100-dll-or-msvcr100d-dll/