BeOS/linkcc

   1 #! /bin/sh
   2 #
   3 # linkcc for Python
   4 # Chris Herborth (chrish@qnx.com)
   5 #
   6 # This is covered by the same copyright/licensing terms as the rest of
   7 # Python.
   8 #
   9 # Shell script to build the Python shared library properly; if we haven't
  10 # already built the export list, we'll need to link twice (argh...) so we
  11 # can eliminate some unwatnted global symbols from the system glue/init
  12 # objects.
  13 #
  14 # This is called by the Modules/Makefile as part of $(LINKCC):
  15 #
  16 # $(LINKCC) $(LDFLAGS) $(LINKFORSHARED) $(MAINOBJ) \
  17 #       -L.. -lpython$(VERSION) $(MODLIBS) $(LIBS) $(SYSLIBS) -o python $(LDLAST)
  18 #
  19 # In 1.5.1 this changed to:
  20 #
  21 # $(LINKCC) $(LDFLAGS) $(LINKFORSHARED) $(MAINOBJ) \
  22 #       $(LIBRARY) $(MODLIBS) $(LIBS) $(SYSLIBS) -o python $(LDLAST)
  23 #
  24 # For BeOS we should set $(LINKCC) to this in configure (similar to the
  25 # AIX situation):
  26 #
  27 # $(srcdir)../BeOS/linkcc $(LIBRARY) $(PURIFY) $(CC) -nodup $(OPT)
  28 #
  29 # -L.. -lpython$(VERSION) will automagically pick up the shared library.
  30
  31 # Check to make sure we know what we're doing.
  32 system="`uname -m`"
  33 if [ "$system" != "BeMac" ] && [ "$system" != "BeBox" ] ; then
  34         echo "Sorry, BeOS Python doesn't support x86 yet."
  35         exit 1
  36 fi
  37
  38 LIBRARY="$1"; shift
  39
  40 # What we want to end up with.
  41 EXPORTS=${LIBRARY%.a}.exp
  42 DYNAMIC=${LIBRARY%.a}.so
  43 LINK_DYNAMIC="-l`echo ${DYNAMIC%.so} | sed -e s,\\\.\\\./,, -e s,lib,,`"
  44
  45 # Grab the rest of the args and build them into the command used to
  46 # link the python binary.  Make sure we link against the shared lib
  47 # and not the static lib.
  48 LINK_CMD=""
  49 while [ "$#" != "0" ] ; do
  50         case "$1" in
  51                 $LIBRARY)
  52                         LINK_CMD="$LINK_CMD -L.. $LINK_DYNAMIC"
  53                         shift
  54                         ;;
  55                 *)
  56                         LINK_CMD="$LINK_CMD $1"
  57                         shift
  58                         ;;
  59         esac
  60 done
  61
  62 # The shared libraries and glue objects we need to link against.
  63 LIBS="-lbe -lnet -lroot"
  64 GLUE="/boot/develop/lib/ppc/glue-noinit.a /boot/develop/lib/ppc/init_term_dyn.o"
  65
  66 # Unwanted symbols we need to eliminate; these are regular expressions
  67 # passed to egrep.
  68 SYMS="opterr optind optarg getopt __.* longjmp _.*_"
  69
  70 # Check to see if we've already got an exports file, and delete it if
  71 # it's older than the lib.
  72 if [ -e $EXPORTS ] && [ $LIBRARY -nt $EXPORTS ] ; then
  73         echo "Deleting old exports file for $DYNAMIC..."
  74         rm -f $EXPORTS
  75 fi
  76
  77 if [ ! -e $EXPORTS ] ; then
  78         # First link; create the exports file with the unwanted global symbols
  79         # in it.  It's a pity we don't have "nm" or something like that...
  80         rm -f temp-exports.exp
  81         mwcc -xms -f temp-exports.exp -o $DYNAMIC $LIBRARY $GLUE $LIBS -nodup
  82
  83         # Now clean out those bad symbols.
  84         for sym in $SYMS ; do
  85                 rm -f temp-exports.exp2
  86                 egrep -v "^$sym$" < temp-exports.exp > temp-exports.exp2
  87                 mv -f temp-exports.exp2 temp-exports.exp
  88         done
  89
  90         rm -f temp-exports.exp2
  91         mv -f temp-exports.exp $EXPORTS
  92 fi
  93
  94 # Now link against the clean exports file.
  95 mwcc -xms -f $EXPORTS -o $DYNAMIC $LIBRARY $GLUE $LIBS -nodup
  96
  97 # We'll need this or the python binary won't load libpython.so...
  98 ( cd .. ; ln -sf `pwd` lib )
  99
 100 # Now build the python binary.
 101 echo "Link command: $LINK_CMD"
 102 $LINK_CMD