arm: Check for the FLAG_ARM_LIBHF flag in the ldconfig cache

Signed-off-by: Steve McIntyre <steve.mcintyre@linaro.org>

ports/ChangeLog.arm

@@ -1,3 +1,7 @@
+2012-12-04  Steve McIntyre  <steve.mcintyre@linaro.org>
+
+	* sysdeps/unix/sysv/linux/arm/dl-cache.h: New file.
+
 2012-12-04  Steve McIntyre  <steve.mcintyre@linaro.org>
 
 	* sysdeps/unix/sysv/linux/arm/ldconfig.h: New file.

ports/sysdeps/unix/sysv/linux/arm/dl-cache.h

@@ -0,0 +1,29 @@
+/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
+   Copyright (C) 2003-2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <ldconfig.h>
+
+#ifdef __ARM_PCS_VFP
+# define _dl_cache_check_flags(flags) \
+  ((flags) == (FLAG_ARM_LIBHF | FLAG_ELF_LIBC6))
+#else
+# define _dl_cache_check_flags(flags) \
+  ((flags) == FLAG_ELF_LIBC6)
+#endif
+
+#include_next <dl-cache.h>