Could you spend time to help me to resolve error in build .so file?

[badpaybad]

I try write my own C code
Then load using this ffi:

// load by manual copy to folder android/src/main/jniLibs
final dylib1 = ffi.DynamicLibrary.open("libsimpleso.so");

Then got these error. Did I got problem when use cmake to build .so file

E/flutter ( 4013): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Invalid argument(s): Failed to load dynamic library 'libsimpleso.so': dlopen failed: library "libc.so.6" not found
E/flutter ( 4013): #0 _open (dart:ffi-patch/ffi_dynamic_library_patch.dart:11:43)
E/flutter ( 4013): #1 new DynamicLibrary.open (dart:ffi-patch/ffi_dynamic_library_patch.dart:22:12)

Code C just simple bellow.

#include <stdio.h>
void hello_world_1()
{
    printf("Hello World\n");
}

int sum_1(int a, int b)
{
    printf("c called sum\n");
    return a + b;
}

[asimsharf]

#include <stdio.h>

void hello_world_1();
int sum_1(int a, int b);

int main(void){
  int a = 4, b = 5;

  // call hello wolrd 1
  hello_world_1();

  // call sum_1
  sum_1(a, b);

  return 0;
}

void hello_world_1()
{
    printf("Hello World\n");
}


int sum_1(int a, int b)
{
    printf("c called sum\n");
    return a + b;
}

[asimsharf]

gcc -c -fPIC *.c
gcc -shared -o liball.so *.o
nm -D liball.so

[badpaybad]

Thanks but here is my case.

https://github.com/badpaybad/flutter-audio-cutting/tree/main/lib/interop/simpleclang
I use cmake to build then copy to android/app/src/main/jniLibs/x86_64/libsimpleso.so
in void main

final dylib1 = ffi.DynamicLibrary.open("libsimpleso.so");

I got error above

---

Other case worked well but need modify android/app/build.gradle

android {
    externalNativeBuild {
        cmake {
            path "../../lib/interop/helloclang/CMakeLists.txt"
        }
    }

---

So I guess that I use cmake to build using CMakeLists.txt was wrong

Could you give me some help?

this is git with source PoC: https://github.com/badpaybad/flutter-audio-cutting