Why does mclrunmain segfault when i call libmatixTerminate outside of mclrunmain?

I'm a digitial designer that needs to break up the matlab compiler output into seperate functions so i can call them via DPI from my SystemVerilog code.

I took your matrixdriver example from teh compilersdk directory and got that working.

Then I split out all the init and terminate functions from the run_main and place them around the call to mclrunmain, see code at the end for modified main file.

This is how i want to call it in my SystemVerilog.

When I do this the application crashes.

If i move all the init and termintates back into the run_main, ti works fine.

Everything i see about mclrunmain says it doesn't matter when running on Linux.

So I removed the mclrunmain call it works fine.

What features if any am I missing out on if i don't use the mclrunmain function and why do the init and terminates need to be inside it?

int main()
{

    /* Call the mclInitializeApplication routine. Make sure that the application
     * was initialized properly by checking the return status. This initialization
     * has to be done before calling any MATLAB API's or MATLAB Compiler generated
     * shared library functions.  */
    if( !mclInitializeApplication(NULL,0) )
    {
        fprintf(stderr, "Could not initialize the application.\n");
    	return -1;
    }


    /* Call the library intialization routine and make sure that the
     * library was initialized properly. */
    if (!libmatrixInitialize()){
        fprintf(stderr,"Could not initialize the library.\n");
        return -2;
    }


    mclRunMain((mclMainFcnType)run_main,0,NULL);

    /* Call the library termination routine */
    libmatrixTerminate();

    /* Note that you should call mclTerminate application at the end of
     * your application.
     */
    mclTerminateApplication();


}