fusl/src/ldso/dlopen.c

#include <dlfcn.h>
#include "libc.h"

__attribute__((__visibility__("hidden"))) void __dl_seterr(const char*, ...);

static void* stub_dlopen(const char* file, int mode) {
  __dl_seterr("Dynamic loading not supported");
  return 0;
}

weak_alias(stub_dlopen, dlopen);