Allow use of noreturn attribute with Clang

- other compilers could also be enabled in the future.

diff --git a/simgear/compiler.h b/simgear/compiler.h
index 2686ea1ff0f3c0507ee107963c7a51a09f912341..795747d533e252c4837bae01bfc132147129afeb 100644 (file)
--- a/simgear/compiler.h
+++ b/simgear/compiler.h
@@ -190,6 +190,12 @@ inline int (isnan)(double r) { return !(r <= 0 || r >= 0); }
 #  define DEPRECATED
 #endif
 
+#if defined(__clang__)
+#  define SG_NO_RETURN [[noreturn]]
+#else
+#  define SG_NO_RETURN
+#endif
+
 //
 // No user modifiable definitions beyond here.
 //