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From: Andrew Turner <andrew@FreeBSD.org>
Date: Sat, 19 Jan 2013 02:24:15 +0000 (UTC)
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Subject: svn commit: r245642 - head/contrib/compiler-rt/lib
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Author: andrew
Date: Sat Jan 19 02:24:14 2013
New Revision: 245642
URL: http://svnweb.freebsd.org/changeset/base/245642

Log:
  Don't use the pcs attribute on compilers that don't support it. We can
  revert this when we stop supporting old versions of gcc.

Modified:
  head/contrib/compiler-rt/lib/int_lib.h

Modified: head/contrib/compiler-rt/lib/int_lib.h
==============================================================================
--- head/contrib/compiler-rt/lib/int_lib.h	Sat Jan 19 02:22:01 2013	(r245641)
+++ head/contrib/compiler-rt/lib/int_lib.h	Sat Jan 19 02:24:14 2013	(r245642)
@@ -25,7 +25,15 @@
 #if __ARM_EABI__
 # define ARM_EABI_FNALIAS(aeabi_name, name)         \
   void __aeabi_##aeabi_name() __attribute__((alias("__" #name)));
-# define COMPILER_RT_ABI __attribute__((pcs("aapcs")))
+
+# if !defined(__clang__) && defined(__GNUC__) && \
+     (__GNUC__ < 4 || __GNUC__ == 4 && __GNUC_MINOR__ < 5)
+/* The pcs attribute was introduced in GCC 4.5.0 */
+#  define COMPILER_RT_ABI
+# else
+#  define COMPILER_RT_ABI __attribute__((pcs("aapcs")))
+# endif
+
 #else
 # define ARM_EABI_FNALIAS(aeabi_name, name)
 # define COMPILER_RT_ABI