FreeBSD/Linux Kernel Cross Reference
sys/conf/kmod_syms.awk

   # $FreeBSD: src/sys/conf/kmod_syms.awk,v 1.4 2002/08/06 19:31:04 iedowse Exp $
   
   # Read global symbols from object file.
   BEGIN {
           while ("${NM:='nm'} -g " ARGV[1] | getline) {
                   if (match($0, /^[^[:space:]]+ [^AU] (.*)$/)) {
                           syms[$3] = $2
                   }
           }
          delete ARGV[1]
  }
  
  # De-list symbols from the export list.
  {
          delete syms[$0]
  }
  
  # Strip commons, make everything else local.
  END {
          for (member in syms) {
                  if (syms[member] == "C")
                          print "-N" member
                  else
                          print "-L" member
          }
  }