build/check_symbols.sh

   1 #!/bin/sh
   2 #
   3 # Purpose of this script is to check library exported symbols
   4 #
   5
   6 FOUND=""
   7 WARN="WARNING : WARNING : WARNING : WARNING : WARNING : WARNING : WARNING : WARNING"
   8
   9 SYMTMPFILE=symbols.txt
  10
  11 grep_sym()
  12 {
  13         if objdump --syms "$1" |grep "$2" 2>&1 > /dev/null; then
  14                 echo -e "\t$1"
  15         fi
  16 }
  17
  18 find_symbol()
  19 {
  20         echo "SYM $1:"
  21
  22         find ../libs/ -name '*.o' | while read obj; do grep_sym "$obj" "$1"; done
  23 }
  24
  25 get_symbols()
  26 {
  27         objdump --dynamic-syms "$1" | awk 'NR > 4 { print }' | awk '$3 != "*UND*"' | awk '{print $NF}'  > "$2"
  28
  29         #
  30         # Remove compiler and glibc symbols
  31         #
  32         sed -i '/^.init$/d' "$2"
  33         sed -i '/^__.*$/d' "$2"
  34         sed -i '/^_.*$/d' "$2"
  35 }
  36
  37 check_symbols()
  38 {
  39         local symfile=$1
  40         shift
  41
  42         for i in `cat $symfile`; do
  43                 if ! grep "^$i$" $@ 2>&1 > /dev/null; then
  44                         if [ -z "$FOUND" ]; then
  45                                 echo "$WARN"
  46                                 echo
  47                                 echo "Following new API symbols found:"
  48                                 echo
  49                         fi
  50                         find_symbol "$i"
  51                         FOUND="yes"
  52                 fi
  53         done
  54 }
  55
  56 do_check()
  57 {
  58         get_symbols "$1" $SYMTMPFILE
  59         shift
  60         check_symbols $SYMTMPFILE "$@"
  61         rm $SYMTMPFILE
  62 }
  63
  64 do_check libgfxprim.so syms/Core_symbols.txt syms/Input_symbols.txt \
  65                        syms/Filters_symbols.txt syms/GFX_symbols.txt \
  66                        syms/Text_symbols.txt
  67
  68 do_check libgfxprim-backends.so syms/Backend_symbols.txt
  69
  70 do_check libgfxprim-grabbers.so syms/Grabbers_symbols.txt
  71
  72 do_check libgfxprim-loaders.so syms/Loaders_symbols.txt
  73
  74 if [ -n "$FOUND" ]; then
  75         echo
  76         echo "Set them static or update lists of exported functions in syms/Foo_symbols.txt"
  77         echo
  78         echo "$WARN"
  79 else
  80         echo "No unexpected symbols found :)"
  81 fi