How can I compile ISPC code in Linux and link it with normal cpp file?

I want to compile an ispc program. I am trying to generate the executable for one of their example programs.

I have simple.cpp with the below content

#include <stdio.h>
#include <stdlib.h>

// Include the header file that the ispc compiler generates
#include "simple_ispc.h"
using namespace ispc;

int main() {
    float vin[16], vout[16];

    // Initialize input buffer
    for (int i = 0; i < 16; ++i)
        vin[i] = (float)i;

    // Call simple() function from simple.ispc file
    simple(vin, vout, 16);

    // Print results
    for (int i = 0; i < 16; ++i)
        printf("%d: simple(%f) = %f\n", i, vin[i], vout[i]);

    return 0;
}

I have simple.ispc with the below content

export void simple(uniform float vin[], uniform float vout[],
                   uniform int count) {
    foreach (index = 0 ... count) {
        // Load the appropriate input value for this program instance.
        float v = vin[index];

        // Do an arbitrary little computation, but at least make the
        // computation dependent on the value being processed
        if (v < 3.)
            v = v * v;
        else
            v = sqrt(v);

        // And write the result to the output array.
        vout[index] = v;
    }
}

I can use cmake https://github.com/ispc/ispc/tree/main/examples/cpu/simple to get the executable but I want to know the raw commands that I need to execute to run simple.cpp file. Can someone please tell how to compile and run the simple.cpp file with ispc?

According to the ISPC User's guide you can just use ispc as a command in your terminal:

ispc simple.ispc -o simple.o

This generates an object file simple.o that you can link to your simple.cpp file with a regular C++ compiler like g++.

Edit:

To compile to simple_ispc.h:

The -h flag can also be used to direct ispc to generate a C/C++ header file that includes C/C++ declarations of the C-callable ispc functions and the types passed to it.

So you can probably do something like

ispc simple.ispc -h simple_ispc.h

and then

g++ simple.cpp -o executable

to get the executable.