generate-zbm: remove integrated syslinux support

bin/generate-zbm

@@ -498,85 +498,6 @@ if ( enabled $config{Components} ) {
   printf "Created kernel image %s\n",    $kernel_target;
 }
 
-# Generate syslinux.cfg, requires components to be built
-if ( enabled $config{Components}{syslinux} ) {
-  my $warning = <<"EOF";
-
-DEPRECATION WARNING: syslinux support in generate-zbm is deprecated.
-  Support will be removed in the next release.
-
-  As an alternative: consider one of the following two options:
-
-  1. Set `Components.Versions` to `false` in the ZFSBootMenu configuration and
-     maintain a static syslinux configuration.
-
-  2. Use the contrib/syslinux-update.sh script in the ZFSBootMenu repository
-     as a post-image hook for generate-zbm(5).
-
-EOF
-  print $warning;
-
-  my $glob    = sprintf( "%s/%s-*", $config{Components}{ImageDir}, $runConf{kernel_prefix} );
-  my @listing = sort versioncmp glob($glob);
-
-  # Filter EFI files, in case they're in the same directory
-  my @components;
-  foreach my $entry (@listing) {
-    if ( $entry =~ /EFI$/i ) {
-      next;
-    }
-    push( @components, $entry );
-  }
-
-  $runConf{syslinux_temp} = join( '/', $tempdir, 'syslinux.conf' );
-  open CFG, '>', $runConf{syslinux_temp};
-
-  my $header = <<'EOF';
-UI menu.c32
-PROMPT 0
-
-MENU TITLE Boot Menu
-TIMEOUT 50
-EOF
-
-  print CFG $header;
-
-  my $add_default = 1;
-  while (@components) {
-    my $entry = pop(@components);
-
-    my $directory = dirname($entry);
-
-    # Strip the mountpoint prefix out to generate a correct path based on /
-    $directory =~ s/\Q$config{Global}{BootMountPoint}//;
-
-    my $kernel = basename($entry);
-    my ( undef, $version ) = split( '-', $kernel );
-    my $label      = "ZFSBootMenu-$version";
-    my $menu_label = "ZFSBootMenu $version";
-
-    if ($add_default) {
-      print CFG "DEFAULT $label\n\n";
-      $add_default--;
-    }
-
-    my $entry_text = <<"EOF";
-LABEL $label
-MENU LABEL $menu_label
-KERNEL $directory/$kernel
-INITRD $directory/initramfs-$version.img
-APPEND $runConf{cmdline}
-
-EOF
-    print CFG $entry_text;
-
-  }
-  close CFG;
-
-  make_path dirname( $config{Components}{syslinux}{Config} );
-  safeCopy( $runConf{syslinux_temp}, $config{Components}{syslinux}{Config} ) or exit 1;
-}
-
 if ( nonempty $config{Global}{PostHooksDir} and -d $config{Global}{PostHooksDir} ) {
   while ( my $hook = <$config{Global}{PostHooksDir}/*> ) {
     next unless -x $hook;

docs/guides/void-linux/syslinux-mbr.rst

@@ -142,9 +142,7 @@ See :doc:`generate-zbm(5) </man/generate-zbm.5>` for more details.
 Configure syslinux
 ~~~~~~~~~~~~~~~~~~
 
-The ``generate-zbm`` image-creation utility includes now-deprecated support for managing a syslinux configuration.
+The ZFSBootMenu configuration described above disables explicit image versioning, which means
-Because this capability is slated for removal and was not reliable in the first place, it is better to create a static
-syslinux configuration. The ZFSBootMenu configuration described above disables explicit image versioning, which means
 that each invocation of ``generate-zbm`` will produce two output files at a predictable location:
 
 * ``/boot/syslinux/zfsbootmenu/vmlinuz-bootmenu``
@@ -184,6 +182,9 @@ Consult the `syslinux documentation <https://wiki.syslinux.org/wiki/index.php?ti
 contents of the ``syslinux.cfg`` configuration file. To alter the command-line arguments passed to the ZFSBootMenu
 image, adjust the contents of the ``APPEND`` lines in the configuration.
 
+Alternatively, the :zbm:`contrib/syslinux-update.sh` ``generate-zbm`` hook can be used to automatically recreate
+``syslinux.cfg``.
+
 .. include:: _include/gen-initramfs.rst
 
 .. include:: ../_include/cleanup.rst

docs/man/generate-zbm.5.rst

@@ -70,7 +70,7 @@ Kernel
 
 **CommandLine**
 
-  If you're making a unified EFI file or a syslinux configuration, this is the command line passed to the boot image.
+  If you're making a unified EFI file, this is the command line passed to the boot image.
 
 **Path**
 
@@ -103,17 +103,6 @@ Components
 
   When *true* (which behaves as *1*) or any positive integer, **generate-zbm** will append the value of *Global.Version* to every image it produces, followed by a revision as *_$revision*. **generate-zbm** will save *Components.Versions* revisions of all images with versions matching the current value of *Global.Version*. In addition, **generate-zbm** will save the highest revision of the most recent *Components.Versions* image versions distinct from *Global.Version*.
 
-Components.syslinux
--------------------
-
-**Enabled**
-
-  When *true*, syslinux configuration generation is enabled. The default value is *false*.
-
-**Config**
-
-  The path of the syslinux configuration file to produce.
-
 EFI
 ---
 
@@ -148,9 +137,6 @@ The following example will write separate, unversioned ZFSBootMenu kernel and in
     ImageDir: /boot/efi/EFI/zbm
     Versions: false
     Enabled: true
-    syslinux:
-      Config: /boot/syslinux/syslinux.cfg
-      Enabled: false
   EFI:
     ImageDir: /boot/efi/EFI/zbm
     Versions: 2

etc/zfsbootmenu/config.yaml

@@ -9,9 +9,6 @@ Components:
   ImageDir: /boot/efi/EFI/zbm
   Versions: 3
   Enabled: true
-  syslinux:
-    Config: /boot/syslinux/syslinux.cfg
-    Enabled: false
 EFI:
   ImageDir: /boot/efi/EFI/zbm
   Versions: false

etc/zfsbootmenu/release.yaml

@@ -5,8 +5,6 @@ Global:
 Components:
   Versions: false
   Enabled: true
-  syslinux:
-    Enabled: false
 EFI:
   Versions: false
   Enabled: true