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 (file)
--- 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
 
    /*