[PATCH 1/1] include: Use visibility hidden attribute on w64-mingw32-clang.

[Alex Henrie]

From: Alex Henrie

w64-mingw32-gcc does not support it, but w64-mingw32-clang does.
---
 include/guiddef.h | 2 +-
 include/winnt.h   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/guiddef.h b/include/guiddef.h
index 6f7e26df0c6..db6c66da131 100644
--- a/include/guiddef.h
+++ b/include/guiddef.h
@@ -90,7 +90,7 @@ extern "C++" {
 #undef DEFINE_GUID

#ifndef DECLSPEC_HIDDEN
-# if defined(__GNUC__) && !defined(__MINGW32__) && !defined(__CYGWIN__)
+# if defined(__GNUC__) && (!defined(__MINGW32__) || defined(__clang__)) && !defined(__CYGWIN__)
 #  define DECLSPEC_HIDDEN __attribute__((visibility ("hidden")))
 # else
 #  define DECLSPEC_HIDDEN
diff --git a/include/winnt.h b/include/winnt.h
index c0967ac4459..f0f3354b8d8 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -181,7 +181,7 @@ extern "C" {
 #endif

#ifndef DECLSPEC_HIDDEN
-# if defined(_MSC_VER) || defined(__MINGW32__) || defined(__CYGWIN__) || defined(__sun)
+# if defined(_MSC_VER) || (defined(__MINGW32__) && !defined(__clang__)) || defined(__CYGWIN__) || defined(__sun)
 #  define DECLSPEC_HIDDEN
 # elif defined(__GNUC__) && ((__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)))
 #  define DECLSPEC_HIDDEN __attribute__((visibility ("hidden")))