--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/config/elf.m4	Mon May 24 12:47:05 2010 +0900
@@ -0,0 +1,27 @@
+dnl Copyright (C) 2010 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Paolo Bonzini.
+
+dnl usage: ACX_ELF_TARGET_IFELSE([if-elf], [if-not-elf])
+AC_DEFUN([ACX_ELF_TARGET_IFELSE], [
+AC_REQUIRE([AC_CANONICAL_TARGET])
+
+target_elf=no
+case $target in
+  *-darwin* | *-aix* | *-cygwin* | *-mingw* | *-aout* | *-*coff* | \
+  *-msdosdjgpp* | *-netware* | *-vms* | *-wince* | *-*-pe* | \
+  alpha*-dec-osf* | *-interix* | hppa[[12]]*-*-hpux*)
+    target_elf=no
+    ;;
+  *)
+    target_elf=yes
+    ;;
+esac
+
+AS_IF([test $target_elf = yes], [$1], [$2])
+])