How to build a shared library file for the C++ Interface

How can I build a shared library for use with C++ Interface?

Answer 1

[MathWorks Support Team]

1) Find the path to the MinGW-w64 g++ compiler.

If you have installed the MinGW-w64 compiler as a MATLAB Add-on, you can locate the root folder at the MATLAB Command Window. For example:

>> getenv('MW_MINGW64_LOC')

ans =

    'C:\ProgramData\MATLAB\SupportPackages\R2021b\3P.instrset\mingw_w64.instrset'

In this example, the g++.exe compiler is located in

C:\ProgramData\MATLAB\SupportPackages\R2021b\3P.instrset\mingw_w64.instrset\bin

2) Add the path to the MinGW-w64 compiler to the system path.

At the Windows command prompt, add the path to the MinGW-w64 compiler to the system path. Using the example above,

set mingwpath=C:\ProgramData\MATLAB\SupportPackages\R2021b\3P.instrset\mingw_w64.instrset\bin
set PATH=%mingwpath%;%PATH%

3) Build the shared libraries.

Navigate to the location of C++ source files, and run these commands to generate shared library from the source file source.cpp.

g++ -c source.cpp -o source.obj -std=c++11
g++ -shared -o source.dll source.obj -Wl,--out-implib,source.lib

These commands create the library files source.dll and source.lib.