Merge downstream version 3.7.8 code

1 files changed, 21 insertions, 0 deletions

diff --git a/indra/llcommon/llpreprocessor.h b/indra/llcommon/llpreprocessor.h
index 7fdb537ab5..309165da7f 100755
--- a/indra/llcommon/llpreprocessor.h
+++ b/indra/llcommon/llpreprocessor.h
@@ -181,4 +181,25 @@
 # define LL_COMMON_API
 #endif // LL_COMMON_LINK_SHARED
 
+#if LL_WINDOWS
+#define LL_TYPEOF(exp) decltype(exp)
+#elif LL_LINUX
+#define LL_TYPEOF(exp) typeof(exp)
+#elif LL_DARWIN
+#define LL_TYPEOF(exp) typeof(exp)
+#endif
+
+#define LL_TO_STRING_HELPER(x) #x
+#define LL_TO_STRING(x) LL_TO_STRING_HELPER(x)
+#define LL_FILE_LINENO_MSG(msg) __FILE__ "(" LL_TO_STRING(__LINE__) ") : " msg
+#define LL_GLUE_IMPL(x, y) x##y
+#define LL_GLUE_TOKENS(x, y) LL_GLUE_IMPL(x, y)
+
+#if LL_WINDOWS
+#define LL_COMPILE_TIME_MESSAGE(msg) __pragma(message(LL_FILE_LINENO_MSG(msg)))
+#else
+// no way to get gcc 4.2 to print a user-defined diagnostic message only when a macro is used
+#define LL_COMPILE_TIME_MESSAGE(msg)
+#endif
+
 #endif	//	not LL_LINDEN_PREPROCESSOR_H