require autoconf-2.69 exactly

The newlib & libgloss dirs are already generated using autoconf-2.69.
To avoid merging new code and/or accidental regeneration using diff
versions, leverage config/override.m4 to pin to 2.69 exactly.  This
matches what gcc/binutils/gdb are already doing.

The README file already says to use autoconf-2.69.

To accomplish this, it's just as simple as adding -I flags to the
top-level config/ dir when running aclocal.  This is because the
override.m4 file overrides AC_INIT to first require the specific
autoconf version before calling the real AC_INIT.

3 files changed, 6 insertions, 20 deletions

diff --git a/libgloss/nios2/aclocal.m4 b/libgloss/nios2/aclocal.m4
index f3492ee..24271f3 100644
--- a/libgloss/nios2/aclocal.m4
+++ b/libgloss/nios2/aclocal.m4
@@ -310,25 +310,6 @@ AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
      [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
 ])
 
-# Copyright (C) 2003-2017 Free Software Foundation, Inc.
-#
-# This file is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# Check whether the underlying file-system supports filenames
-# with a leading dot.  For instance MS-DOS doesn't.
-AC_DEFUN([AM_SET_LEADING_DOT],
-[rm -rf .tst 2>/dev/null
-mkdir .tst 2>/dev/null
-if test -d .tst; then
-  am__leading_dot=.
-else
-  am__leading_dot=_
-fi
-rmdir .tst 2>/dev/null
-AC_SUBST([am__leading_dot])])
-
 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
 
 # Copyright (C) 2001-2017 Free Software Foundation, Inc.
@@ -396,4 +377,7 @@ AC_DEFUN([_AM_SUBST_NOTMAKE])
 # Public sister of _AM_SUBST_NOTMAKE.
 AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 
+m4_include([../../config/depstand.m4])
+m4_include([../../config/lead-dot.m4])
+m4_include([../../config/override.m4])
 m4_include([../acinclude.m4])
diff --git a/libgloss/nios2/configure b/libgloss/nios2/configure
index 335a743..1a8b4ed 100755
--- a/libgloss/nios2/configure
+++ b/libgloss/nios2/configure
@@ -1764,6 +1764,9 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
+
+
+
 if test "${enable_shared}" = "yes" ; then
     echo "Shared libraries not supported for cross compiling, ignored"
 fi
diff --git a/libgloss/nios2/configure.ac b/libgloss/nios2/configure.ac
index d43fff6..5eb0b8e 100644
--- a/libgloss/nios2/configure.ac
+++ b/libgloss/nios2/configure.ac
@@ -1,5 +1,4 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_PREREQ(2.69)dnl
 AC_INIT(crt0.S)
 
 if test "${enable_shared}" = "yes" ; then