From 90bb53f8c9b7ca3db6841a5005af791b93782d96 Mon Sep 17 00:00:00 2001
From: Darren Salt <linux@youmustbejoking.demon.co.uk>
Date: Sat, 3 May 2008 14:34:45 +0100
Subject: Add support for "deprecated" attribute.

---
 configure.ac                |  1 +
 m4/attributes.m4            | 23 +++++++++++++++++++++++
 src/xine-utils/attributes.h |  6 ++++++
 3 files changed, 30 insertions(+)

diff --git a/configure.ac b/configure.ac
index 0beac5ca7..bee221542 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2215,6 +2215,7 @@ AC_SUBST([VISIBILITY_FLAG])
 CC_ATTRIBUTE_SENTINEL
 CC_ATTRIBUTE_FORMAT
 CC_ATTRIBUTE_FORMAT_ARG
+CC_ATTRIBUTE_DEPRECATED
 
 AC_OPTIMIZATIONS
 
diff --git a/m4/attributes.m4 b/m4/attributes.m4
index 55f34c9f7..a74280696 100644
--- a/m4/attributes.m4
+++ b/m4/attributes.m4
@@ -322,3 +322,26 @@ AC_DEFUN([CC_ATTRIBUTE_ALIGNED], [
        [Define the highest alignment supported])
   fi
 ])
+
+AC_DEFUN([CC_ATTRIBUTE_DEPRECATED], [
+	AC_REQUIRE([CC_CHECK_WERROR])
+	ac_save_CFLAGS="$CFLAGS"
+	CFLAGS="$CFLAGS $cc_cv_werror"
+	AC_CACHE_CHECK([if compiler supports __attribute__((deprecated))],
+		[cc_cv_attribute_alias],
+		[AC_COMPILE_IFELSE([
+			void some_function(void) __attribute__((deprecated));
+			],
+			[cc_cv_attribute_deprecated=yes],
+			[cc_cv_attribute_deprecated=no])
+		])
+	CFLAGS="$ac_save_CFLAGS"
+	
+	if test "x$cc_cv_attribute_deprecated" = "xyes"; then
+		AC_DEFINE([SUPPORT_ATTRIBUTE_DEPRECATED], 1, [Define this if the compiler supports the deprecated attribute])
+		$1
+	else
+		true
+		$2
+	fi
+])
diff --git a/src/xine-utils/attributes.h b/src/xine-utils/attributes.h
index 563832e5c..2085be571 100644
--- a/src/xine-utils/attributes.h
+++ b/src/xine-utils/attributes.h
@@ -63,6 +63,12 @@
 # define XINE_SENTINEL
 #endif
 
+#ifdef SUPPORT_ATTRIBUTE_DEPRECATED
+# define XINE_DEPRECATED __attribute__((__deprecated__))
+#else
+# define XINE_DEPRECATED
+#endif
+
 #ifndef __attr_unused
 # ifdef SUPPORT_ATTRIBUTE_UNUSED
 #  define __attr_unused __attribute__((__unused__))
-- 
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