From 84733b68d87670f22208e41a8072ee9d6276fd33 Mon Sep 17 00:00:00 2001
From: Justin Kerk <dopefishjustin@gmail.com>
Date: Wed, 6 Jan 2021 01:55:14 +0000
Subject: [PATCH] Fix DRC build breakage under Emscripten. [Justin Kerk]

---
 src/osd/modules/lib/osdlib_unix.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/osd/modules/lib/osdlib_unix.cpp b/src/osd/modules/lib/osdlib_unix.cpp
index 1c51a2666c7..5b182eb6a9c 100644
--- a/src/osd/modules/lib/osdlib_unix.cpp
+++ b/src/osd/modules/lib/osdlib_unix.cpp
@@ -163,9 +163,11 @@ private:
 
 bool invalidate_instruction_cache(void const *start, std::size_t size)
 {
+#if !defined(SDLMAME_EMSCRIPTEN)
 	char const *const begin(reinterpret_cast<char const *>(start));
 	char const *const end(begin + size);
 	__builtin___clear_cache(const_cast<char *>(begin), const_cast<char *>(end));
+#endif
 	return true;
 }