Fixes the build with gcc in gnu++98 and gnu++11 mode.

https://github.com/llvm-mirror/llvm/commit/d1bf52275daa86e838ebbffc71efd43fc8c416f4

---
 lib/Support/Unix/Memory.inc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Support/Unix/Memory.inc b/lib/Support/Unix/Memory.inc
index 72a8af6..91dc7da 100644
--- a/lib/Support/Unix/Memory.inc
+++ b/lib/Support/Unix/Memory.inc
@@ -33,6 +33,7 @@
 #endif
 
 extern "C" void sys_icache_invalidate(const void *Addr, size_t len);
+extern "C" void __clear_cache(void *, void *);
 
 namespace {
 
-- 
1.8.3.1