1 files changed, 92 insertions, 0 deletions
diff --git a/private/refresh-hwcap b/private/refresh-hwcap
new file mode 100755
index 0000000..62668bc
--- /dev/null
+++ b/private/refresh-hwcap
@@ -0,0 +1,92 @@
+#!/usr/bin/perl
+
+use v5.20;
+use warnings;
+use utf8;
+
+use IPC::Run3;
+use POSIX qw(strftime);
+use Unicode::UTF8 qw(encode_utf8);
+
+my $datadir = shift;
+my $man = shift // '/usr/share/man/man8/ld.so.8.gz';
+my (%caps, @keeps);
+
+die encode_utf8("Usage: $0 path/to/lintian/data.\n")
+  unless $datadir;
+
+my @command = ('zcat', $man);
+my $output;
+
+run3(\@command, \undef, \$output);
+my @lines = split(/\n/, $output);
+
+while (defined(my $line = shift @lines)) {
+    next
+      unless $line =~ /^\.S[SH] HARDWARE CAPABILITIES/i;
+    last;
+}
+
+while (defined(my $line = shift @lines)) {
+    next
+      unless $line =~ /^\.B/;
+    last;
+}
+
+while (defined(my $line = shift @lines)) {
+
+    last
+      if $line =~ /^\.S[SH] /;
+    next
+      if $line =~ /^\./;
+
+    $caps{$_} = 1 for split(/,\s*/, $line);
+}
+
+my $path = "$datadir/shared-libs/hwcap-dirs";
+my $date = strftime '%Y-%m-%d', gmtime;
+open(my $orig, '<', $path)
+  or die encode_utf8("Cannot open $path");
+
+while (my $line = <$orig>) {
+    chomp $line;
+
+    next
+      unless $line =~ m/^#\s*Keep:\s*(.*\S)\s*$/;
+
+    my $keep = $1;
+    push @keeps, $keep;
+
+    foreach my $val (split /\s*,\s*/, $keep) {
+        $caps{$val} = 1;
+    }
+}
+close($orig);
+
+open(my $fp, '>', $path)
+  or die encode_utf8("Cannot open $path");
+
+print {$fp} encode_utf8(<<"EOF");
+# List of all known hwcap.
+#
+# Last updated: $date
+# Generated by $0
+#
+# Lines to always be included:
+EOF
+foreach my $keep (@keeps) {
+    print {$fp} encode_utf8("#    Keep: $keep\n");
+}
+
+print {$fp} encode_utf8("\n");
+
+foreach (sort keys %caps) {
+    print {$fp} encode_utf8("$_\n");
+}
+close($fp);
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et