1 files changed, 12 insertions, 3 deletions
diff --git a/test/rubygems/test_gem_ext_cargo_builder/rust_ruby_example/src/lib.rs b/test/rubygems/test_gem_ext_cargo_builder/rust_ruby_example/src/lib.rs
index 26bddaeaf1..0626f04e0f 100644
--- a/test/rubygems/test_gem_ext_cargo_builder/rust_ruby_example/src/lib.rs
+++ b/test/rubygems/test_gem_ext_cargo_builder/rust_ruby_example/src/lib.rs
@@ -1,4 +1,3 @@
-#[macro_use]
 extern crate rb_sys;
 
 use rb_sys::{
@@ -7,8 +6,6 @@ use rb_sys::{
 use std::ffi::{CStr, CString};
 use std::os::raw::{c_char, c_long};
 
-ruby_extension!();
-
 #[inline]
 unsafe fn cstr_to_string(str: *const c_char) -> String {
     CStr::from_ptr(str).to_string_lossy().into_owned()
@@ -24,6 +21,18 @@ unsafe extern "C" fn pub_reverse(_klass: VALUE, mut input: VALUE) -> VALUE {
     rb_utf8_str_new(reversed_cstring.as_ptr(), size)
 }
 
+#[cfg(rubygems)]
+#[no_mangle]
+pub extern "C" fn hello_from_rubygems() {}
+
+#[cfg(rubygems_0_0_0)]
+#[no_mangle]
+pub extern "C" fn should_never_exist() {}
+
+#[cfg(rubygems_x_x_x)]
+#[no_mangle]
+pub extern "C" fn hello_from_rubygems_version() {}
+
 #[allow(non_snake_case)]
 #[no_mangle]
 pub extern "C" fn Init_rust_ruby_example() {