ARM64 support

git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/gas-preprocessor@1334 632fc199-4ca6-4c93-a231-07263d6284db

gas-preprocessor.pl

@@ -52,7 +52,9 @@
 my $comm;
 
 # detect architecture from gcc binary name
-if      ($gcc_cmd[0] =~ /arm/) {
+if ($gcc_cmd[0] =~ /arm64|aarch64/) {
+    $comm = ';';
+} elsif ($gcc_cmd[0] =~ /arm/) {
     $comm = '@';
 } elsif ($gcc_cmd[0] =~ /powerpc|ppc/) {
     $comm = '#';
@@ -61,7 +63,9 @@
 # look for -arch flag
 foreach my $i (1 .. $#gcc_cmd-1) {
     if ($gcc_cmd[$i] eq "-arch") {
-        if ($gcc_cmd[$i+1] =~ /arm/) {
+        if ($gcc_cmd[$i+1] =~ /arm64|aarch64/) {
+            $comm = ';';
+        } elsif ($gcc_cmd[$i+1] =~ /arm/) {
             $comm = '@';
         } elsif ($gcc_cmd[$i+1] =~ /powerpc|ppc/) {
             $comm = '#';
@@ -72,7 +76,9 @@
 # assume we're not cross-compiling if no -arch or the binary doesn't have the arch name
 if (!$comm) {
     my $native_arch = qx/arch/;
-    if ($native_arch =~ /arm/) {
+    if ($native_arch =~ /arm64|aarch64/) {
+        $comm = ';';
+    } elsif ($native_arch =~ /arm/) {
         $comm = '@';
     } elsif ($native_arch =~ /powerpc|ppc/) {
         $comm = '#';