libvpx: Pull from upstream

source/libvpx/build/make/rtcd.pl

 #!/usr/bin/env perl
 
 no strict 'refs';
 use warnings;
 use Getopt::Long;
 Getopt::Long::Configure("auto_help") if $Getopt::Long::VERSION > 2.32;
 
 my %ALL_FUNCS = ();
 my @ALL_ARCHS;
 my @ALL_FORWARD_DECLS;
@@ skipping 31 matching lines @@
     warn "$defs_file: $!\n";
     Getopt::Long::HelpMessage('-exit' => 1);
   }
 }
 
 open CONFIG_FILE, $opts{config} or
   die "Error opening config file '$opts{config}': $!\n";
 
 my %config = ();
 while (<CONFIG_FILE>) {
-  next if !/^CONFIG_/;
+  next if !/^(?:CONFIG_|HAVE_)/;
   chomp;
   my @pair = split /=/;
   $config{$pair[0]} = $pair[1];
 }
 close CONFIG_FILE;
 
 #
 # Routines for the RTCD DSL to call
 #
 sub vpx_config($) {
@@ skipping 139 matching lines @@
   print <<EOF;
 #ifndef ${include_guard}
 #define ${include_guard}
 
 #ifdef RTCD_C
 #define RTCD_EXTERN
 #else
 #define RTCD_EXTERN extern
 #endif
 
+EOF
+
+process_forward_decls();
+print <<EOF;
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 EOF
-
-process_forward_decls();
-print "\n";
 declare_function_pointers("c", @ALL_ARCHS);
 
 print <<EOF;
 void $opts{sym}(void);
 
 EOF
 }
 
 sub common_bottom() {
   print <<EOF;
@@ skipping 151 matching lines @@
   @ALL_ARCHS = filter(qw/edsp/);
   arm;
 } elsif ($opts{arch} eq 'armv6') {
   @ALL_ARCHS = filter(qw/edsp media/);
   arm;
 } elsif ($opts{arch} eq 'armv7') {
   @ALL_ARCHS = filter(qw/edsp media neon_asm neon/);
   @REQUIRES = filter(keys %required ? keys %required : qw/media/);
   &require(@REQUIRES);
   arm;
-} elsif ($opts{arch} eq 'armv8') {
+} elsif ($opts{arch} eq 'armv8' || $opts{arch} eq 'arm64' ) {
   @ALL_ARCHS = filter(qw/neon/);
   arm;
 } else {
   unoptimized;
 }
 
 __END__
 
 =head1 NAME
 
@@ skipping 11 matching lines @@
 C header file on stdout.
 
 =head1 OPTIONS
 
 Options:
   --arch=ARCH       Architecture to generate defs for (required)
   --disable-EXT     Disable support for EXT extensions
   --require-EXT     Require support for EXT extensions
   --sym=SYMBOL      Unique symbol to use for RTCD initialization function
   --config=FILE     File with CONFIG_FOO=yes lines to parse