From 9887eeccca78880aab56ac1c0bfe28d8716646bc Mon Sep 17 00:00:00 2001
From: =?utf8?q?R=C3=A9mi=20Denis-Courmont?= <remi@remlab.net>
Date: Sat, 7 May 2011 19:38:42 +0300
Subject: [PATCH] Mark other symbols as hidden

Unfortunately, libtool is yet incapable of doing marking symbols as
hidden (not exported) at compilation time.  So lets do it manually.
According to the GCC documentation, this allow some compile-time
optimizations depending on the platform.
This was already done by Damien earlier (and removed during the
plugin headers cleanup).

The check is disabled on Windows, as the compiler accepts the flag,
but generates lots of warnings during compilation.
---
 configure.ac | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/configure.ac b/configure.ac
index c851043bb7..2f436afb23 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1036,6 +1036,23 @@ AS_IF([test "${enable_coverage}" != "no"], [
   LDFLAGS_save="${LDFLAGS}"
 ])
 
+AS_IF([test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"], [
+  AC_CACHE_CHECK([if $CC accepts -fvisibility=hidden],
+                 [ac_cv_c_visibility_hidden], [
+    CFLAGS="${CFLAGS_save} -ffast-math"
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
+      ac_cv_c_visibility_hidden=yes
+    ], [
+      ac_cv_c_visibility_hidden=no
+    ])
+  ])
+  AS_IF([test "${ac_cv_c_visibility_hidden}" != "no"], [
+    CFLAGS="${CFLAGS} -fvisibility=hidden"
+    CXXFLAGS="${CXXFLAGS} -fvisibility=hidden"
+    OBJCFLAGS="${OBJCFLAGS} -fvisibility=hidden"
+  ])
+])
+
 VLC_SAVE_FLAGS
 
 dnl
-- 
2.39.5