tools/autoconf: bump to 2.71

Autoconf release 2.71 is a bugfix release of 2.70
Links provided are the changelog of 2.70 [1] [2]
and the announcement of 2.71 [3]

The first patch needed to be rewritten.
Some of the lines in the patch were moved
to be consistent with the same change added upstream
in other similar files.

Second and third patches are no longer needed,
Emacs can now be disabled at the configure stage,
and support for musl was added upstream.

The patch now causes help2man to be required
for installing man pages, but we don't need them.
There is no way to disable man pages build
with the configure script,
so use make to touch the files with the build target install-man1.

Link: https://lists.gnu.org/archive/html/autotools-announce/2020-12/msg00001.html
Link: https://lwn.net/Articles/839395
Link: https://lists.gnu.org/archive/html/info-gnu/2021-01/msg00017.html
Signed-off-by: Michael Pratt <mcpratt@pm.me>

1 files changed, 43 insertions, 80 deletions

diff --git a/tools/autoconf/patches/000-relocatable.patch b/tools/autoconf/patches/000-relocatable.patch
index a935671ce8..a105defd29 100644
--- a/tools/autoconf/patches/000-relocatable.patch
+++ b/tools/autoconf/patches/000-relocatable.patch
@@ -1,7 +1,11 @@
 --- a/bin/autoheader.in
 +++ b/bin/autoheader.in
-@@ -28,7 +28,8 @@ eval 'case $# in 0) exec @PERL@ -S "$0";
+@@ -30,9 +30,12 @@ use 5.006;
+ use strict;
+ use warnings FATAL => 'all';
  
++$^W = 1;
++
  BEGIN
  {
 -  my $pkgdatadir = $ENV{'autom4te_perllibdir'} || '@pkgdatadir@';
@@ -10,33 +14,23 @@
    unshift @INC, "$pkgdatadir";
  
    # Override SHELL.  On DJGPP SHELL may not be set to a shell
-@@ -50,7 +51,7 @@ use strict;
- use vars qw ($config_h %verbatim %symbol);
+@@ -54,7 +57,7 @@ use Autom4te::XFile;
+ our ($config_h, %symbol, %verbatim);
  
  # Lib files.
 -my $autom4te = $ENV{'AUTOM4TE'} || '@bindir@/@autom4te-name@';
 +my $autom4te = $ENV{'AUTOM4TE'} || ($ENV{'STAGING_DIR_HOST'} ? $ENV{'STAGING_DIR_HOST'} . '/bin/@autom4te-name@' : '@bindir@/@autom4te-name@');
- local $config_h;
  my $config_h_in;
  my @prepend_include;
+ my @include;
 --- a/bin/autom4te.in
 +++ b/bin/autom4te.in
-@@ -1,10 +1,12 @@
--#! @PERL@ -w
-+#! @PERL@
- # -*- perl -*-
- # @configure_input@
- 
- eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
-     if 0;
+@@ -26,9 +26,12 @@ use 5.006;
+ use strict;
+ use warnings FATAL => 'all';
  
 +$^W = 1;
 +
- # autom4te - Wrapper around M4 libraries.
- # Copyright (C) 2001-2003, 2005-2012 Free Software Foundation, Inc.
- 
-@@ -24,7 +26,8 @@ eval 'case $# in 0) exec @PERL@ -S "$0";
- 
  BEGIN
  {
 -  my $pkgdatadir = $ENV{'autom4te_perllibdir'} || '@pkgdatadir@';
@@ -45,8 +39,8 @@
    unshift @INC, $pkgdatadir;
  
    # Override SHELL.  On DJGPP SHELL may not be set to a shell
-@@ -44,7 +47,8 @@ use File::Basename;
- use strict;
+@@ -48,7 +51,8 @@ use Autom4te::General;
+ use Autom4te::XFile;
  
  # Data directory.
 -my $pkgdatadir = $ENV{'AC_MACRODIR'} || '@pkgdatadir@';
@@ -55,7 +49,7 @@
  
  # $LANGUAGE{LANGUAGE} -- Automatic options for LANGUAGE.
  my %language;
-@@ -87,7 +91,7 @@ my @include;
+@@ -91,7 +95,7 @@ my @include;
  my $freeze = 0;
  
  # $M4.
@@ -64,7 +58,7 @@
  # Some non-GNU m4's don't reject the --help option, so give them /dev/null.
  fatal "need GNU m4 1.4 or later: $m4"
    if system "$m4 --help </dev/null 2>&1 | grep reload-state >/dev/null";
-@@ -269,6 +273,12 @@ sub load_configuration ($)
+@@ -272,6 +276,12 @@ sub load_configuration ($)
  
        my @words = shellwords ($_);
        my $type = shift @words;
@@ -79,22 +73,13 @@
  	  fatal "$file:$.: end-language missing for: $lang"
 --- a/bin/autoreconf.in
 +++ b/bin/autoreconf.in
-@@ -1,10 +1,12 @@
--#! @PERL@ -w
-+#! @PERL@
- # -*- perl -*-
- # @configure_input@
- 
- eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
-     if 0;
+@@ -29,10 +29,13 @@ use 5.006;
+ use strict;
+ use warnings FATAL => 'all';
  
 +$^W = 1;
 +
- # autoreconf - install the GNU Build System in a directory tree
- # Copyright (C) 1994, 1999-2012 Free Software Foundation, Inc.
- 
-@@ -26,7 +28,8 @@ eval 'case $# in 0) exec @PERL@ -S "$0";
- 
+ my $buildauxdir;
  BEGIN
  {
 -  my $pkgdatadir = $ENV{'autom4te_perllibdir'} || '@pkgdatadir@';
@@ -102,31 +87,25 @@
 +	($ENV{'STAGING_DIR_HOST'} ? $ENV{'STAGING_DIR_HOST'} . '/share/autoconf' : '@pkgdatadir@');
    unshift @INC, $pkgdatadir;
  
-   # Override SHELL.  On DJGPP SHELL may not be set to a shell
-@@ -106,9 +109,9 @@ Written by David J. MacKenzie and Akim D
+   $buildauxdir = $ENV{'autom4te_buildauxdir'} || $pkgdatadir . '/build-aux';
+@@ -117,9 +120,9 @@ Written by David J. MacKenzie and Akim D
  ";
  
  # Lib files.
--my $autoconf   = $ENV{'AUTOCONF'}   || '@bindir@/@autoconf-name@';
--my $autoheader = $ENV{'AUTOHEADER'} || '@bindir@/@autoheader-name@';
--my $autom4te   = $ENV{'AUTOM4TE'}   || '@bindir@/@autom4te-name@';
-+my $autoconf   = $ENV{'AUTOCONF'}   || ($ENV{'STAGING_DIR_HOST'} ? $ENV{'STAGING_DIR_HOST'} . '/bin/@autoconf-name@' : '@bindir@/@autoconf-name@');
-+my $autoheader = $ENV{'AUTOHEADER'} || ($ENV{'STAGING_DIR_HOST'} ? $ENV{'STAGING_DIR_HOST'} . '/bin/@autoheader-name@' : '@bindir@/@autoheader-name@');
-+my $autom4te   = $ENV{'AUTOM4TE'}   || ($ENV{'STAGING_DIR_HOST'} ? $ENV{'STAGING_DIR_HOST'} . '/bin/@autom4te-name@' : '@bindir@/@autom4te-name@');
- my $automake   = $ENV{'AUTOMAKE'}   || 'automake';
- my $aclocal    = $ENV{'ACLOCAL'}    || 'aclocal';
- my $libtoolize = $ENV{'LIBTOOLIZE'} || 'libtoolize';
+-my $autoconf    = $ENV{'AUTOCONF'}    || '@bindir@/@autoconf-name@';
+-my $autoheader  = $ENV{'AUTOHEADER'}  || '@bindir@/@autoheader-name@';
+-my $autom4te    = $ENV{'AUTOM4TE'}    || '@bindir@/@autom4te-name@';
++my $autoconf    = $ENV{'AUTOCONF'}    || ($ENV{'STAGING_DIR_HOST'} ? $ENV{'STAGING_DIR_HOST'} . '/bin/@autoconf-name@' : '@bindir@/@autoconf-name@');
++my $autoheader  = $ENV{'AUTOHEADER'}  || ($ENV{'STAGING_DIR_HOST'} ? $ENV{'STAGING_DIR_HOST'} . '/bin/@autoheader-name@' : '@bindir@/@autoheader-name@');
++my $autom4te    = $ENV{'AUTOM4TE'}    || ($ENV{'STAGING_DIR_HOST'} ? $ENV{'STAGING_DIR_HOST'} . '/bin/@autom4te-name@' : '@bindir@/@autom4te-name@');
+ my $automake    = $ENV{'AUTOMAKE'}    || 'automake';
+ my $aclocal     = $ENV{'ACLOCAL'}     || 'aclocal';
+ my $libtoolize  = $ENV{'LIBTOOLIZE'}  || 'libtoolize';
 --- a/bin/autoscan.in
 +++ b/bin/autoscan.in
-@@ -1,4 +1,4 @@
--#! @PERL@ -w
-+#! @PERL@
- # -*- perl -*-
- # @configure_input@
- 
-@@ -23,9 +23,12 @@
- eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
-     if 0;
+@@ -28,9 +28,12 @@ use 5.006;
+ use strict;
+ use warnings FATAL => 'all';
  
 +$^W = 1;
 +
@@ -138,7 +117,7 @@
    unshift @INC, $pkgdatadir;
  
    # Override SHELL.  On DJGPP SHELL may not be set to a shell
-@@ -91,10 +94,10 @@ my $configure_scan = 'configure.scan';
+@@ -95,10 +98,10 @@ my %needed_macros =
  my $log;
  
  # Autoconf and lib files.
@@ -153,15 +132,9 @@
  # -----
 --- a/bin/autoupdate.in
 +++ b/bin/autoupdate.in
-@@ -1,4 +1,4 @@
--#! @PERL@ -w
-+#! @PERL@
- # -*- perl -*-
- # @configure_input@
- 
-@@ -24,9 +24,12 @@
- eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
-     if 0;
+@@ -29,9 +29,12 @@ use 5.006;
+ use strict;
+ use warnings FATAL => 'all';
  
 +$^W = 1;
 +
@@ -173,7 +146,7 @@
    unshift @INC, $pkgdatadir;
  
    # Override SHELL.  On DJGPP SHELL may not be set to a shell
-@@ -50,10 +53,10 @@ my $autom4te = $ENV{'AUTOM4TE'} || '@bin
+@@ -55,10 +58,10 @@ my $autom4te = $ENV{'AUTOM4TE'} || '@bin
  my $autoconf = "$autom4te --language=autoconf";
  # We need to find m4sugar.
  my @prepend_include;
@@ -188,22 +161,12 @@
  # $HELP
 --- a/bin/ifnames.in
 +++ b/bin/ifnames.in
-@@ -1,10 +1,12 @@
--#! @PERL@ -w
-+#! @PERL@
- # -*- perl -*-
- # @configure_input@
- 
- eval 'case $# in 0) exec @PERL@ -S "$0";; *) exec @PERL@ -S "$0" "$@";; esac'
-     if 0;
+@@ -33,9 +33,12 @@ use 5.006;
+ use strict;
+ use warnings FATAL => 'all';
  
 +$^W = 1;
 +
- # ifnames - print the identifiers used in C preprocessor conditionals
- 
- # Copyright (C) 1994-1995, 1999-2003, 2005-2012 Free Software
-@@ -31,7 +33,8 @@ eval 'case $# in 0) exec @PERL@ -S "$0";
- 
  BEGIN
  {
 -  my $pkgdatadir = $ENV{'autom4te_perllibdir'} || '@pkgdatadir@';
@@ -214,7 +177,7 @@
    # Override SHELL.  On DJGPP SHELL may not be set to a shell
 --- a/bin/autoconf.as
 +++ b/bin/autoconf.as
-@@ -84,7 +84,11 @@ exit_missing_arg='
+@@ -89,7 +89,11 @@ exit_missing_arg='
  # restore font-lock: '
  
  # Variables.
@@ -224,6 +187,6 @@
 +else
 +	: ${AUTOM4TE='@bindir@/@autom4te-name@'}
 +fi
+ : ${trailer_m4='@pkgdatadir@/autoconf/trailer.m4'}
  autom4te_options=
  outfile=
- verbose=false