From 39fa5d8d652ec9aa5f2dfaeeb072ce9d489efcfa Mon Sep 17 00:00:00 2001
From: cedric <cedric@7cbeb6ba-43b4-40fd-8cce-4c39aea84d33>
Date: Wed, 17 Dec 2008 13:03:00 +0000
Subject: [PATCH] Update ac_attribute macro and remove __UNUSED__ declaration
 from eina.

git-svn-id: svn+ssh://svn.enlightenment.org/var/svn/e/trunk/evas@38179 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33
---
 configure.ac       |  1 +
 m4/ac_attribute.m4 | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 m4/ac_attribute.m4

diff --git a/configure.ac b/configure.ac
index 06641f5..935c350 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,6 +17,7 @@ AM_PROG_CC_STDC
 AC_HEADER_STDC
 AC_C_BIGENDIAN
 AC_C_CONST
+AC_C___ATTRIBUTE__
 
 AC_LIBTOOL_WIN32_DLL
 define([AC_LIBTOOL_LANG_F77_CONFIG], [:])dnl
diff --git a/m4/ac_attribute.m4 b/m4/ac_attribute.m4
new file mode 100644
index 0000000..34bb4db
--- /dev/null
+++ b/m4/ac_attribute.m4
@@ -0,0 +1,46 @@
+dnl Copyright (C) 2004-2008 Kim Woelders
+dnl Copyright (C) 2008 Vincent Torri <vtorri at univ-evry dot fr>
+dnl That code is public domain and can be freely used or copied.
+dnl Originally snatched from somewhere...
+
+dnl Macro for checking if the compiler supports __atribute__
+
+dnl Usage: AC_C___ATTRIBUTE__
+dnl call AC_DEFINE for HAVE___ATTRIBUTE__ and __UNUSED__
+dnl if the compiler supports __attribute__, HAVE___ATTRIBUTE__ is
+dnl defined to 1 and __UNUSED__ is defined to __attribute__((unused))
+dnl otherwise, HAVE___ATTRIBUTE__ is not defined and __UNUSED__ is
+dnl defined to nothing.
+
+AC_DEFUN([AC_C___ATTRIBUTE__],
+[
+
+AC_MSG_CHECKING([for __attribute__])
+
+AC_CACHE_VAL([ac_cv___attribute__],
+   [AC_TRY_COMPILE(
+       [
+#include <stdlib.h>
+       ],
+       [
+int func(int x);
+int foo(int x __attribute__ ((unused)))
+{
+   exit(1);
+}
+       ],
+       [ac_cv___attribute__="yes"],
+       [ac_cv___attribute__="no"]
+    )]
+)
+
+AC_MSG_RESULT($ac_cv___attribute__)
+
+if test "x${ac_cv___attribute__}" = "xyes" ; then
+   AC_DEFINE([HAVE___ATTRIBUTE__], [1], [Define to 1 if your compiler has __attribute__])
+   AC_DEFINE([__UNUSED__], [__attribute__((unused))], [Macro declaring a function argument to be unused])
+  else
+    AC_DEFINE([__UNUSED__], [], [Macro declaring a function argument to be unused])
+fi
+
+])
-- 
2.7.4