fix function attributes

test/jit.cpp

@@ -28,15 +28,15 @@
 #include <migraphx/make_op.hpp>
 #include <test.hpp>
 
-#ifndef _WIN32
-#define EXPORT_SYMBOL R"migraphx(extern "C")migraphx"
+#ifdef _WIN32
+#define EXPORT_SYMBOL R"migraphx(__declspec(dllexport) )migraphx"
 #else
-#define EXPORT_SYMBOL R"migraphx(__declspec(dllexport))migraphx"
+#define EXPORT_SYMBOL
 #endif
 
 // NOLINTNEXTLINE
 const std::string add_42_src = EXPORT_SYMBOL R"migraphx(
-int add(int x)
+extern "C" int add(int x)
 {
     return x+42;
 }
@@ -69,18 +69,14 @@ std::function<F> compile_module(const migraphx::module& m, const std::string& fl
 {
     migraphx::cpp_generator g;
     g.fmap([](auto&& name) { return "std::" + name; });
-    g.create_function(g.generate_module(m).set_attributes({"extern \"C\""}));
+    g.create_function(g.generate_module(m).set_attributes({EXPORT_SYMBOL "extern \"C\""}));
 
     return compile_function<F>(preamble + g.str(), flags, m.name());
 }
 
 TEST_CASE(simple_run)
 {
-#ifdef _WIN32
-    auto f = compile_function<int(int)>(add_42_src, "", "?add@@YAHH@Z");
-#else
     auto f = compile_function<int(int)>(add_42_src, "", "add");
-#endif
     EXPECT(f(8) == 50);
     EXPECT(f(10) == 52);
 }