MATLAB: How to Load Multiple dll files that have one header

dll

I have 3 dll files that I want to load and there is a header file that corresponds to all 3. Do I just use the loadlibrary('libName1','libName2', 'libName3', 'headerfile.h')? It's not working so I'm assuming not this.

Best Answer

You need to call loadlibrary three times. It will be faster if you create a prototype file the first time or even do it once and keep track of the file for all future sessions:

loadlibrary('libname1','header','mfilename','LibPrototype') % do once
loadlibrary('libname#', @LibPrototype) % All future loads look like this

Related Solutions

MATLAB: How to create a C shared library from MEX-files using the MATLAB Compiler

Creating a C shared library with MEX-files is analogous to creating one with MATLAB files as in the example located in the MATLAB Compiler Documentation:

http://www.mathworks.com/access/helpdesk/help/toolbox/compiler/

In step 2 of Building the Shared Library, instead of MATLAB files, you can specify MEX-files. For example, if you have MEX-files named mex1.dll and mex2.dll on Windows, you would execute the following command:

 mcc -B csharedlib:sharedlibname mex1.dll mex2.dll

where "sharedlibname" is the name of the library you wish to create. This command would generate a file sharedlibname.dll that contains functions of mex1 and mex2.

MATLAB: How to use a protofile with ‘loadlibrary’

Protofiles provide two benefits when using 'loadlibrary':

Protofiles allow you to provide prototypes for a library for which you do not have a header file
Providing a protofile to 'loadlibrary' instead of a header file can dramatically speed up execution.

The following code gives an example of how to use a protofile:

if ~libisloaded(libname)
    % If the protofile already exists
    if exist('myProtofile', 'file') == 2
        % Load the library using the protofile, this is much faster
        loadlibrary(libname, @myProtofile);
    else
        % Load the library using the header file, generating the protofile
        % Will create a file name 'myProtofile.m' in the current
        % directory.
        loadlibrary(libname, headerFile, 'mfilename', 'myProtofile.m');
    end
end

Best Answer

Related Solutions

MATLAB: How to create a C shared library from MEX-files using the MATLAB Compiler

MATLAB: How to use a protofile with ‘loadlibrary’

Related Question