From 0bcbe88cf313117f739b98a11dbe698b75784e9d Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Tue, 24 Jul 2012 19:38:24 -0400
Subject: [PATCH] [hb-old] Add visibility attributes

---
 src/hb-old/harfbuzz-global.h | 10 ++++++----
 src/hb-old/harfbuzz-impl.h   |  2 +-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/hb-old/harfbuzz-global.h b/src/hb-old/harfbuzz-global.h
index d4e6b466b..c0f54d6e1 100644
--- a/src/hb-old/harfbuzz-global.h
+++ b/src/hb-old/harfbuzz-global.h
@@ -31,12 +31,14 @@
 #include <stdlib.h>
 #include <string.h>
 
+#define HB_BEGIN_VISIBILITY _Pragma ("GCC visibility push(hidden)")
+#define HB_END_VISIBILITY _Pragma ("GCC visibility pop")
 #ifdef __cplusplus
-#define HB_BEGIN_HEADER  extern "C" {
-#define HB_END_HEADER  }
+#define HB_BEGIN_HEADER  extern "C" { HB_BEGIN_VISIBILITY
+#define HB_END_HEADER  HB_END_VISIBILITY }
 #else
-#define HB_BEGIN_HEADER  /* nothing */
-#define HB_END_HEADER  /* nothing */
+#define HB_BEGIN_HEADER  HB_BEGIN_VISIBILITY
+#define HB_END_HEADER  HB_END_VISIBILITY
 #endif
 
 HB_BEGIN_HEADER
diff --git a/src/hb-old/harfbuzz-impl.h b/src/hb-old/harfbuzz-impl.h
index 5f430498c..01865cae8 100644
--- a/src/hb-old/harfbuzz-impl.h
+++ b/src/hb-old/harfbuzz-impl.h
@@ -33,7 +33,7 @@
 HB_BEGIN_HEADER
 
 #ifndef HB_INTERNAL
-# define HB_INTERNAL
+# define HB_INTERNAL __attribute__((visibility("hidden")))
 #endif
 
 #ifndef NULL