newlib: require autoconf-2.69

[Mike Frysinger]

On 05 Jan 2022 20:46, Mike Frysinger wrote:
> do you want me to update newlib/ & libgloss/ to leverage this macro ?

looks like it's just as easy as passing -I to the top-level config dir when
running aclocal.  since override.m4 overrides AC_INIT, it forces the version
lock logic.  example diff for newlib/ is below.

lmk what you prefer here.

$ autoconf-2.71
aclocal.m4:17: warning: this file was generated for autoconf 2.69.
You have another version of autoconf.  It may work, but is not guaranteed to.
If you have problems, you may need to regenerate the build system entirely.
To do so, use the procedure documented by the package, typically 'autoreconf'.
configure.ac:5: error: Please use exactly Autoconf 2.69 instead of 2.71.
../config/override.m4:12: _GCC_AUTOCONF_VERSION_CHECK is expanded from...
configure.ac:5: the top level
autom4te-2.71: error: /usr/bin/m4 failed with exit status: 1
-mike

--- a/newlib/Makefile.am
+++ b/newlib/Makefile.am
@@ -1,7 +1,7 @@
 ## Process this file with automake to generate Makefile.in
 
 AUTOMAKE_OPTIONS = dejagnu subdir-objects
-ACLOCAL_AMFLAGS = -I . -I ..
+ACLOCAL_AMFLAGS = -I . -I .. -I ../config
 
 # Variables that will accumulate in subdirs.
 PHONY =
--- a/newlib/Makefile.in
+++ b/newlib/Makefile.in
@@ -99,10 +99,13 @@ host_triplet = @host@
 @HAVE_ICONVDATA_TRUE@am__append_5 = iconvdata/EUC-JP.la
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/../libtool.m4 \
-	$(top_srcdir)/../ltoptions.m4 $(top_srcdir)/../ltsugar.m4 \
-	$(top_srcdir)/../ltversion.m4 $(top_srcdir)/../lt~obsolete.m4 \
-	$(top_srcdir)/acinclude.m4 $(top_srcdir)/configure.ac
+am__aclocal_m4_deps = $(top_srcdir)/../config/depstand.m4 \
+	$(top_srcdir)/../config/lead-dot.m4 \
+	$(top_srcdir)/../config/override.m4 \
+	$(top_srcdir)/../libtool.m4 $(top_srcdir)/../ltoptions.m4 \
+	$(top_srcdir)/../ltsugar.m4 $(top_srcdir)/../ltversion.m4 \
+	$(top_srcdir)/../lt~obsolete.m4 $(top_srcdir)/acinclude.m4 \
+	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 DIST_COMMON = $(srcdir)/Makefile.am $(top_srcdir)/configure \
@@ -416,7 +419,7 @@ top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 AUTOMAKE_OPTIONS = dejagnu subdir-objects
-ACLOCAL_AMFLAGS = -I . -I ..
+ACLOCAL_AMFLAGS = -I . -I .. -I ../config
 
 # Variables that will accumulate in subdirs.
 
--- a/newlib/aclocal.m4
+++ b/newlib/aclocal.m4
@@ -626,25 +626,6 @@ if test x"${install_sh+set}" != xset; then
 fi
 AC_SUBST([install_sh])])
 
-# 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])])
-
 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
 # From Jim Meyering
 
@@ -1186,6 +1167,9 @@ AC_SUBST([am__tar])
 AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
+m4_include([../config/depstand.m4])
+m4_include([../config/lead-dot.m4])
+m4_include([../config/override.m4])
 m4_include([../libtool.m4])
 m4_include([../ltoptions.m4])
 m4_include([../ltsugar.m4])
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