/Modules/ld_so_aix
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- #!/bin/sh
- #
- # ========================================================================
- # FILE: ld_so_aix
- # TYPE: executable, uses makexp_aix
- # SYSTEM: AIX
- #
- # DESCRIPTION: Creates a shareable .o from a set of pre-compiled
- # (unshared) .o files
- #
- # USAGE: ld_so_aix [CC] [arguments]
- #
- # ARGUMENTS: Same as for "ld". The following arguments are processed
- # or supplied by this script (those marked with an asterisk
- # can be overriden from command line):
- #
- # Argument Default value
- # (*) -o [OutputFileName] -o shr.o
- # (*) -e [EntryPointLabel] -e init[OutputBaseName]
- # (*) -bE:[ExportFile] -bE:[OutputBaseName].exp
- # (*) -bI:[ImportFile] -bI:./python.exp
- # -bM:[ModuleType] -bM:SRE
- # -bhalt:[Number] -bhalt:4
- # -T[Number] -T512
- # -H[Number] -H512
- # -lm
- #
- # The compiler specific ("-lc" or "-lc_r", "-lpthreads",...)
- # arguments will be automatically passed to "ld" according
- # to the CC command provided as a first argument to this
- # script. Usually, the same CC command was used to produce
- # the pre-compiled .o file(s).
- #
- # NOTES: 1. Since "ld_so_aix" was originally written for building
- # shared modules for the Python interpreter, the -e and
- # -bI default values match Python's conventions. In
- # Python, the entry point for a shared module is based
- # on the module's name (e.g., the "mathmodule" will
- # expect an entry point of "initmath").
- # 2. The script accepts multiple .o or .a input files and
- # creates a single (shared) output file. The export list
- # that is created is based on the output file's basename
- # with the suffix ".exp".
- # 3. The resulting shared object file is left in the
- # current directory.
- # 4. Uncommenting the "echo" lines gives detailed output
- # about the commands executed in the script.
- #
- #
- # HISTORY: Oct-1996 -- Support added for multiple .o files --
- # -- and optional arguments processing. --
- # Chris Myers (myers@tc.cornell.edu), Keith Kwok
- # (kkwok@tc.cornell.edu) and Vladimir Marangozov
- #
- # Aug-6-1996 -- Take care of the compiler specific --
- # -- args by leaving CC to invoke "ld". --
- # Vladimir Marangozov
- #
- # Jul-1-1996 -- Make sure to use /usr/ccs/bin/ld --
- # -- Use makexp_aix for the export list. --
- # Vladimir Marangozov (Vladimir.Marangozov@imag.fr)
- #
- # Manus Hand (mhand@csn.net) -- Initial code -- 6/24/96
- # ========================================================================
- #
- usage="Usage: ld_so_aix [CC command] [ld arguments]"
- if test ! -n "$*"; then
- echo $usage; exit 2
- fi
- makexp=`dirname $0`/makexp_aix
- # Check for existence of compiler.
- CC=$1; shift
- whichcc=`which $CC`
- if test ! -x "$whichcc"; then
- echo "ld_so_aix: Compiler '$CC' not found; exiting."
- exit 2
- fi
- if test ! -n "$*"; then
- echo $usage; exit 2
- fi
- # Default import file for Python
- # Can be overriden by providing a -bI: argument.
- impfile="./python.exp"
- # Parse arguments
- while test -n "$1"
- do
- case "$1" in
- -e | -Wl,-e)
- if test -z "$2"; then
- echo "ld_so_aix: The -e flag needs a parameter; exiting."; exit 2
- else
- shift; entry=$1
- fi
- ;;
- -e* | -Wl,-e*)
- entry=`echo $1 | sed -e "s/-Wl,//" -e "s/-e//"`
- ;;
- -o)
- if test -z "$2"; then
- echo "ld_so_aix: The -o flag needs a parameter; exiting."; exit 2
- else
- shift; objfile=$1
- fi
- ;;
- -o*)
- objfile=`echo $1 | sed "s/-o//"`
- ;;
- -bI:* | -Wl,-bI:*)
- impfile=`echo $1 | sed -e "s/-Wl,//" -e "s/-bI://"`
- ;;
- -bE:* | -Wl,-bE:*)
- expfile=`echo $1 | sed -e "s/-Wl,//" -e "s/-bE://"`
- ;;
- *.o | *.a)
- objs="$objs $1"
- args="$args $1"
- ;;
- -bM:* | -Wl,-bM:* | -H* | -Wl,-H* | -T* | -Wl,-T* | -lm)
- ;;
- *)
- args="$args $1"
- ;;
- esac
- shift
- done
- if test -z "$objs"; then
- echo "ld_so_aix: No input files; exiting."
- exit 2
- elif test ! -r "$impfile"; then
- echo "ld_so_aix: Import file '$impfile' not found or not readable; exiting."
- exit 2
- fi
- # If -o wasn't specified, assume "-o shr.o"
- if test -z "$objfile"; then
- objfile=shr.o
- fi
- filename=`basename $objfile | sed "s/\.[^.]*$//"`
- # If -bE: wasn't specified, assume "-bE:$filename.exp"
- if test -z "$expfile"; then
- expfile="$filename.exp"
- fi
- # Default entry symbol for Python modules = init[modulename]
- # Can be overriden by providing a -e argument.
- if test -z "$entry"; then
- entry=init`echo $filename | sed "s/module.*//"`
- fi
- #echo "ld_so_aix: Debug info section"
- #echo " -> output file : $objfile"
- #echo " -> import file : $impfile"
- #echo " -> export file : $expfile"
- #echo " -> entry point : $entry"
- #echo " -> object files: $objs"
- #echo " -> CC arguments: $args"
- CCOPT="-Wl,-e$entry -Wl,-bE:$expfile -Wl,-bI:$impfile -Wl,-bhalt:4"
- CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -lm -o $objfile"
- # Note: to use dynamic libraries like libtcl8.4.so and libtk8.4.so
- # you may need to replace the second CCOPT line above with the following:
- # CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -brtl -bnortllib -lm -o $objfile"
- CCARGS="$args"
- # Export list generation.
- #echo $makexp $expfile "$objfile" $objs
- $makexp $expfile "$objfile" $objs
- # Perform the link.
- #echo $CC $CCOPT $CCARGS
- $CC $CCOPT $CCARGS
- retval=$?
- # Delete the module's export list file.
- # Comment this line if you need it.
- rm -f $expfile
- exit $retval