From: Julian Ospald <hasufell@gentoo.org>
Date: Mon Aug 17 20:15:03 UTC 2015
Subject: fix build with clang

--- a/configure.ac
+++ b/configure.ac
@@ -22,26 +22,6 @@
 AC_SUBST([ADDED_CPPFLAGS])
 AC_SUBST([ADDED_CXXFLAGS])
 
-# Extended initializer lists were added in 4.4.
-AC_MSG_CHECKING([if using a version of GCC older than 4.4])
-AC_PREPROC_IFELSE(
-  [AC_LANG_SOURCE([[
-#ifdef __GNUC__
-#if (__GNUC__ * 100 + __GNUC_MINOR__) < 404
-#FAIL
-#endif
-#endif
-  ]])],
-  [
-    AC_MSG_RESULT(no)
-  ],
-  [
-    AC_MSG_RESULT(yes)
-    AC_MSG_NOTICE([if using GCC, version 4.4 or later is required])
-    AC_MSG_ERROR([GCC too old])
-  ]
-)
-
 # /tmp/ccB6kF2d.s: Assembler messages:
 # /tmp/ccB6kF2d.s:1325: Error: symbol `_ZZN10SafeVectorIdEixEPdS1_jE19__PRETTY_FUNCTION__' is already defined
 # /tmp/ccB6kF2d.s:1330: Error: symbol `_ZZN10SafeVectorI5AngleEixEPS0_S2_jE19__PRETTY_FUNCTION__' is already defined