mirror of https://github.com/python/cpython.git
removed old file
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Guido van Rossum
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1a62311cfb
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3bedce0185
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#!/bin/ksh
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#################################
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# AIX shared library helper #
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#################################
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# ========================================================================
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# FILENAME: make_aix_so
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# MODULE FOR: standalone executable
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# PLATFORM: AIX (specific)
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# DESCRIPTION: Creates a shareable .o from a pre-compiled (unshared)
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# .o file
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# ARGUMENTS: Same as for "ld". The -bM, -bE, -bI, -H, -T, and -lc
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# arguments of "ld" will be supplied by this script.
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# NOTES: 1. Currently specific to the building of Python
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# interpreter shared objects, in that the entry
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# point name is hardcoded based on the object file
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# name (the "mathmodule.o" file will expect an
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# entry point of "initmath"). This could be remedied
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# by the support (or simple expectation) of a "-e"
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# argument.
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# 2. The resulting shared object file is left in the
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# current directory with the extension .so. It may
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# need to be changed to have a .o extension before
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# it is usable. (At least, Python expects it to
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# have the .o extension, but this is simply because
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# python wants it that way -- it COULD probably be
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# called anything at all).
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# HISTORY: Manus Hand (mhand@csn.net) -- Initial code -- 6/24/96
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# ========================================================================
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# ========================================================================
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# SET UP VARIABLES FOR USE IN THIS SCRIPT
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# ------------------------------------------------------------------------
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# Note that the setting of "entry" is Python-build specific. This script
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# is not general-purpose for that reason (although support for a "-e"
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# argument to it could be added, making it usable for any AIX application)
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# ========================================================================
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objfile=$1
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shift
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filename=`echo $objfile | sed -e "s:.*/\([^/]*\)$:\1:" -e "s/\..*$//"`
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entry=init`echo $filename | sed "s/module.*//"`
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ldargs="-e$entry -bE:$filename.exp -bM:SRE -T512 -H512 -lc $objfile $*"
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tmpfile=.py_$$
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# ======================================================================
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# EXPORT LIST GENERATION
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# ----------------------------------------------------------------------
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# For the Python modules, this COULD be much simpler, since we know the
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# only exported variable is ".$entry" ("entry" was assigned just above).
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# However, the approach used here for export file generation is more
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# generic and will support all .o's, not just properly formatted Python-
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# importable modules. Here is the rule: any "extern" symbol name which
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# appears in the # output of "nm" which IS resolved (i.e., which does
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# NOT have an address of zero) should go into the export list. Read
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# each line from a temp file containing these symbols. If it begins
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# with a dot, then add it to the list being built. If it does not, then
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# see if the same symbol, with the dot prepended, also appears in the
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# list. If so, DON'T include the current symbol (the one without the
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# prepended dot).
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# ======================================================================
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exec 3>&1 1>$filename.exp
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echo "#!$objfile"
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nm $objfile | grep "|extern|" | grep -v " 0|extern|" | cut -f1 -d"|" > $tmpfile
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while read line ; do
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echo "$line" | cut -c1 | read prefix
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if [ "$prefix" = "." ]; then
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echo "$line"
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else
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grep "^\.$line" $tmpfile > /dev/null
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if [ $? != 0 ]; then
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echo "$line" ; fi ; fi ; done < $tmpfile
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rm $tmpfile
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# ===============================================================
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# IMPORT LIST AND SHARED OBJECT FILE GENERATION
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# ---------------------------------------------------------------
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# Send all output to the to-be-built import file, starting it off
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# with the required "#!" line (which tells it in which loaded
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# binary these symbols are to be found at runtime). Then attempt
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# to ld the object using only the export list built above, and
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# hide the stderr output from "ld". If the ld fails with status
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# code 8 (and in the case of the Python modules, it always does,
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# since each need some symbols from the statically linked portion
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# of the interpreter), this is because an import list should be
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# given containing the symbols which are unresolved. The symbols
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# will have been sent to stdout as a side-effect of the failed ld
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# command, so by redirecting the stdout output, they will have
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# magically been put into the import file being built. Then we
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# simply call ld again with both the import and export lists.
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# ===============================================================
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exec 1>$filename.imp
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echo "#!python"
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ld $ldargs 2>/dev/null
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status=$?
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exec 1>&3
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# ================================================================
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# GUIDO: If you want to separate the generation of the import and
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# export lists from the creation of the .so file, here's where the
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# break should be made -- in my mail I mentioned that some of this
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# script belongs in the pre-static link stage of the make and some
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# belongs after it. As I said, here is the dividing line. Now,
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# of course, if there is a module which needs NO statically linked
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# symbols -- but then again, there can't be, because they all need
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# initmodule4() -- the "ld" which is ABOVE this line may actually
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# have succeeded, so the "if" below will fail, but of course,
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# if you separate the script at this point, you won't care about
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# such things.
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# ================================================================
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if [ $status = 8 ] ; then
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ld $ldargs $filename.imp ; fi
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# ======================================================================
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# GUIDO: Remember that at this point, the files (assuming you leave the
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# arguments to LDSHARED totally unchanged) are still named with a .so
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# extension. However, Python looks for them with a .o extension. You
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# can either change this in the core code (#ifdef _AIX) so that it looks
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# for an .so or you can do what I did, which is rename them to .o's when
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# they get mv'ed by the sharedinstall make rule. (Actually, I did it by
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# hand, but you'd do it in sharedinstall.
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# =======================================================================
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