From 23a066f71f2c508c043e2fd2457c5e82326e3a38 Mon Sep 17 00:00:00 2001
From: Krystine Sherwin <93062060+KrystalDelusion@users.noreply.github.com>
Date: Mon, 21 Jul 2025 10:34:54 +1200
Subject: [PATCH] source_location: Try use __has_include

---
 kernel/register.h | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/kernel/register.h b/kernel/register.h
index 07d6f09c1..5cdb62ebe 100644
--- a/kernel/register.h
+++ b/kernel/register.h
@@ -27,11 +27,18 @@
 #if __cpp_lib_source_location == 201907L
   #include <source_location>
   using std::source_location;
-#else
-  #include <experimental/source_location>
-#  ifdef __cpp_lib_experimental_source_location
+#elif defined(__has_include)
+#  if __has_include(<experimental/source_location>)
+    #include <experimental/source_location>
     using std::experimental::source_location;
 #  else
+    #define SOURCE_FALLBACK
+#  endif
+#else
+  #define SOURCE_FALLBACK
+#endif
+
+#ifdef SOURCE_FALLBACK
 struct source_location { // dummy placeholder
 	int line() const { return 0; }
 	int column() const { return 0; }
@@ -39,7 +46,6 @@ struct source_location { // dummy placeholder
 	const char* function_name() const { return "unknown"; }
 	static const source_location current(...) { return source_location(); }
 };
-#  endif
 #endif
 
 YOSYS_NAMESPACE_BEGIN