How to use the OpenMP library in a Swift GUI application?

I'm trying to use the OpenMP library for some parallel computing in a Swift application. I installed native libomp using homebrew.

1. Create new Swift MacOS app project in Xcode.
2. Add new C file and H file

Header file:

#include <omp.h>

size_t getNThreads(void);

C file:

#include "c_omp_test.h"

size_t getNThreads(void){
    return omp_get_num_threads();
}

1. Xcode automatically add bridging header

//
//  Use this file to import your target's public headers that you would like to expose to Swift.
//
#include "c_omp_test.h"

1. Add "-Xpreprocessor -fopenmp" to "Other C flags"
2. Add "Header Search Paths" and "Library Search Paths"
3. Add "-lopm" to "Other Linker Flags"
4. Add call getNThreads from Swift

import SwiftUI
struct ContentView: View {
    @State private var nThreads : Int = 0
    var body: some View {
        VStack{
            Text ("Number of threads \(nThreads)")
            Button("Get number of threads"){
                nThreads = getNThreads()
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

First I got the following error message when launching the application

'/opt/homebrew/*/libomp.dylib' (code signature in <39E30DBF-F7E5-3113-954E-1798A7F5B050> '/opt/homebrew/Cellar/libomp/13.0.0/lib/libomp.dylib' not valid for use in process: mapped file has no Team ID and is not a platform binary (signed with custom identity or adhoc?))

After that I disable Library Validation checkbox in "Hardened Runtime" section. Now the application starts normally, but when calling the getNThreads() function I get

OMP: Error #178: Function Can't open SHM2 failed: OMP: System error #1: Operation not permitted

and crush report.

If I create a swift console application, everything works just fine.