Merge GDB 7.5.1

gdb/gnulib/m4/warn-on-use.m4

Index: gdb/gnulib/m4/warn-on-use.m4
diff --git a/gdb/gnulib/m4/warn-on-use.m4 b/gdb/gnulib/m4/warn-on-use.m4
deleted file mode 100644
index 6d599963b85d8faab4480c0486e9d3d179a7db89..0000000000000000000000000000000000000000
--- a/gdb/gnulib/m4/warn-on-use.m4
+++ /dev/null
@@ -1,45 +0,0 @@
-# warn-on-use.m4 serial 2
-dnl Copyright (C) 2010, 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.
-
-# gl_WARN_ON_USE_PREPARE(INCLUDES, NAMES)
-# ---------------------------------------
-# For each whitespace-separated element in the list of NAMES, define
-# HAVE_RAW_DECL_name if the function has a declaration among INCLUDES
-# even after being undefined as a macro.
-#
-# See warn-on-use.h for some hints on how to poison function names, as
-# well as ideas on poisoning global variables and macros.  NAMES may
-# include global variables, but remember that only functions work with
-# _GL_WARN_ON_USE.  Typically, INCLUDES only needs to list a single
-# header, but if the replacement header pulls in other headers because
-# some systems declare functions in the wrong header, then INCLUDES
-# should do likewise.
-#
-# If you assume C89, then it is generally safe to assume declarations
-# for functions declared in that standard (such as gets) without
-# needing gl_WARN_ON_USE_PREPARE.
-AC_DEFUN([gl_WARN_ON_USE_PREPARE],
-[
-  m4_foreach_w([gl_decl], [$2],
-    [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])),
-      [Define to 1 if ]m4_defn([gl_decl])[ is declared even after
-       undefining macros.])])dnl
-  for gl_func in m4_flatten([$2]); do
-    AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl
-    AC_CACHE_CHECK([whether $gl_func is declared without a macro],
-      gl_Symbol,
-      [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1],
-[@%:@undef $gl_func
-  (void) $gl_func;])],
-        [AS_VAR_SET(gl_Symbol, [yes])], [AS_VAR_SET(gl_Symbol, [no])])])
-     AS_VAR_IF(gl_Symbol, [yes],
-       [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1])
-       dnl shortcut - if the raw declaration exists, then set a cache
-       dnl variable to allow skipping any later AC_CHECK_DECL efforts
-       eval ac_cv_have_decl_$gl_func=yes])
-    AS_VAR_POPDEF([gl_Symbol])dnl
-  done
-])