. "\n" . $pattern . ' __PAGE_OFFSET') . ' | '
       . shell_string($gHelper{'gcc'}) . ' ' . shell_string('-I' . $answer)
       . ' -E - | ' . shell_string($gHelper{'grep'}) . ' '
       . shell_string($pattern));
     chomp($header_page_offset);
     $header_page_offset =~ s/^$pattern \(0x([0-9a-fA-F]{8}).*$/$1/;
     if ($header_page_offset =~ /[0-9a-fA-F]{8}/) {
       # We found a valid page offset
       if (not (lc($header_page_offset) eq lc($gSystem{'page_offset'}))) {
         if ($source eq 'user') {
           print wrap('The kernel defined by this directory of header files
           does ' . 'not have the same address space size as your
           running ' . 'kernel.' . "\n\n", 0);
         }
#         return '';
       }
     }