Implement hiprtc for codegen tests

codegen/test/rtc/include/rtc/compile_kernel.hpp

@@ -4,24 +4,29 @@
 #include <rtc/kernel.hpp>
 #include <ck/filesystem.hpp>
 #include <string>
+#include <functional>
 
 namespace rtc {
 
 struct src_file
 {
     CK::fs::path path;
-    std::string_view content;
+    std::string content;
 };
 
 struct compile_options
 {
     std::string flags       = "";
     std::string kernel_name = "main";
+    std::vector<src_file> additional_src_files = {};
+    std::string params = "";
 };
 
 kernel compile_kernel(const std::vector<src_file>& src,
                       compile_options options = compile_options{});
 
+kernel compile_kernel(const std::string& content, compile_options options = compile_options{});
+                    
 } // namespace rtc
 
 #endif

codegen/test/rtc/include/rtc/hip.hpp

@@ -4,6 +4,7 @@
 #include <hip/hip_runtime_api.h>
 #include <memory>
 #include <string>
+#include <stdexcept>
 
 namespace rtc {
 

codegen/test/rtc/include/rtc/hiprtc_enable_env.hpp

@@ -0,0 +1,3 @@
+#include <ck/utility/env.hpp>
+
+CK_DECLARE_ENV_VAR_BOOL(CK_CODEGEN_TESTS_ENABLE_HIPRTC)