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 #       resample_
  18
  19 FILTER="${GREP} -v -e ^ast_ -e ^_ast_ -e ^__ast_ -e ^astman_ -e ^pbx_ -e ^resample_"
  20
  21 case "${PROC}" in
  22         powerpc64)
  23                 TEXTSYM=" D "
  24                 ;;
  25         *)
  26                 TEXTSYM=" T "
  27                 ;;
  28 esac
  29
  30 case "${OSARCH}" in
  31     linux-gnu|FreeBSD)
  32         nm ${1} | ${GREP} -e "$TEXTSYM" | cut -d" " -f3 | ${FILTER} > striplist
  33         sed -e "s/^/-N /" striplist | xargs -n 40 ${STRIP} ${1}
  34         rm -f striplist
  35         ;;
  36     *)
  37         ;;
  38 esac