Create function to register compute kernels automatically on Init

Author: raulcd

r/src/arrowExports.cpp

@@ -23,18 +23,6 @@
 #include <arrow/record_batch.h>
 #include <arrow/table.h>
 
-#if ARROW_VERSION_MAJOR >= 21
-// Initialize Arrow Compute kernels at startup
-namespace {
-struct ArrowComputeInitializer {
-  ArrowComputeInitializer() {
-    auto status = arrow::compute::Initialize();
-    StopIfNotOk(status);
-  }
-} arrow_compute_initializer;
-}  // namespace
-#endif
-
 std::shared_ptr<arrow::compute::CastOptions> make_cast_options(cpp11::list options);
 
 arrow::compute::ExecContext* gc_context() {
@@ -633,6 +621,14 @@ std::vector<std::string> compute__GetFunctionNames() {
   return arrow::compute::GetFunctionRegistry()->GetFunctionNames();
 }
 
+// [[arrow::export]]
+void compute__Initialize() {
+#if ARROW_VERSION_MAJOR >= 21
+  auto status = arrow::compute::Initialize();
+  StopIfNotOk(status);
+#endif
+}
+
 class RScalarUDFKernelState : public arrow::compute::KernelState {
  public:
   RScalarUDFKernelState(cpp11::sexp exec_func, cpp11::sexp resolver)