build_tools/strip_nonapi

   1 #!/bin/sh -e
   2
   3 # This script is designed to remove all non-API global symbols from an object
   4 # file. The only global symbols that should be retained are those that belong
   5 # to the official namespace. Unfortunately doing this is platform-specific, as
   6 # the object file manipulation tools are not consistent across platforms.
   7 #
   8 # On platforms where this script does not know what to do, the object file
   9 # will retain non-API global symbols, and this may have unpleasant side effects.
  10 #
  11 # Prefixes that belong to the official namespace are:
  12 #       ast_
  13 #       _ast_
  14 #       __ast_
  15 #       astman_
  16 #       pbx_
  17
  18 FILTER="${GREP} -v -e ^ast_ -e ^_ast_ -e ^__ast_ -e ^astman_ -e ^pbx_"
  19
  20 case "${OSARCH}" in
  21     linux-gnu)
  22         nm ${1} | ${GREP} -e " T " | cut -d" " -f3 | ${FILTER} > striplist
  23         sed -e "s/^/-N /" striplist | xargs ${STRIP} ${1}
  24         rm -f striplist
  25         ;;
  26     *)
  27         ;;
  28 esac