Merge GDB 7.5.1

gdb/gnulib/m4/mmap-anon.m4

Index: gdb/gnulib/m4/mmap-anon.m4
diff --git a/gdb/gnulib/m4/mmap-anon.m4 b/gdb/gnulib/m4/mmap-anon.m4
deleted file mode 100644
index 82f4a3ca8de447f4e95d03640949a19b9d29f2cb..0000000000000000000000000000000000000000
--- a/gdb/gnulib/m4/mmap-anon.m4
+++ /dev/null
@@ -1,59 +0,0 @@
-# mmap-anon.m4 serial 8
-dnl Copyright (C) 2005, 2007, 2009-2011 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-# Detect how mmap can be used to create anonymous (not file-backed) memory
-# mappings.
-# - On Linux, AIX, OSF/1, Solaris, Cygwin, Interix, Haiku, both MAP_ANONYMOUS
-#   and MAP_ANON exist and have the same value.
-# - On HP-UX, only MAP_ANONYMOUS exists.
-# - On MacOS X, FreeBSD, NetBSD, OpenBSD, only MAP_ANON exists.
-# - On IRIX, neither exists, and a file descriptor opened to /dev/zero must be
-#   used.
-
-AC_DEFUN([gl_FUNC_MMAP_ANON],
-[
-  dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
-  AC_REQUIRE([AC_PROG_CPP])
-  AC_REQUIRE([AC_PROG_EGREP])
-
-  dnl Persuade glibc <sys/mman.h> to define MAP_ANONYMOUS.
-  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
-
-  # Check for mmap(). Don't use AC_FUNC_MMAP, because it checks too much: it
-  # fails on HP-UX 11, because MAP_FIXED mappings do not work. But this is
-  # irrelevant for anonymous mappings.
-  AC_CHECK_FUNC([mmap], [gl_have_mmap=yes], [gl_have_mmap=no])
-
-  # Try to allow MAP_ANONYMOUS.
-  gl_have_mmap_anonymous=no
-  if test $gl_have_mmap = yes; then
-    AC_MSG_CHECKING([for MAP_ANONYMOUS])
-    AC_EGREP_CPP([I cant identify this map.], [
-#include <sys/mman.h>
-#ifdef MAP_ANONYMOUS
-    I cant identify this map.
-#endif
-],
-      [gl_have_mmap_anonymous=yes])
-    if test $gl_have_mmap_anonymous != yes; then
-      AC_EGREP_CPP([I cant identify this map.], [
-#include <sys/mman.h>
-#ifdef MAP_ANON
-    I cant identify this map.
-#endif
-],
-        [AC_DEFINE([MAP_ANONYMOUS], [MAP_ANON],
-          [Define to a substitute value for mmap()'s MAP_ANONYMOUS flag.])
-         gl_have_mmap_anonymous=yes])
-    fi
-    AC_MSG_RESULT([$gl_have_mmap_anonymous])
-    if test $gl_have_mmap_anonymous = yes; then
-      AC_DEFINE([HAVE_MAP_ANONYMOUS], [1],
-        [Define to 1 if mmap()'s MAP_ANONYMOUS flag is available after including
-         config.h and <sys/mman.h>.])
-    fi
-  fi
-])