include: Require MSVC 2013 Update 4.
Earlier MSVC 2013 releases have troubles compiling some of our C99 code,
so make sure we have Update 4 to avoid confusion.
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Brian Paul <brianp@vmware.com>
diff --git a/include/c99_compat.h b/include/c99_compat.h
index bfe655b..24e96e0 100644
--- a/include/c99_compat.h
+++ b/include/c99_compat.h
@@ -36,8 +36,8 @@
*/
#if defined(_MSC_VER)
-# if _MSC_VER < 1800
-# error "Microsoft Visual Studio 2013 or higher required"
+# if _MSC_VER < 1800 || (_MSC_FULL_VER < 180031101 && !defined(__clang__))
+# error "Microsoft Visual Studio 2013 Update 4 or higher required"
# endif
/*