Major upgrade by Vladimir Marangozov.

Modules/ld_so_aix

@@ -5,32 +5,53 @@
 #   TYPE:           executable, uses makexp_aix
 #   SYSTEM:         AIX
 #
-#   DESCRIPTION:    Creates a shareable .o from a pre-compiled (unshared)
-#                   .o file
+#   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 -bM, -bE, -bI, -H, -T, and -lm
-#                   arguments will be supplied by this script.  The compiler
-#                   specific ("-lc" or "-lc_r", "-lpthreads", etc) 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.
+#   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):
 #
-#   NOTES:          1.  Currently specific to the building of Python
-#                       interpreter shared objects, in that the entry
-#                       point name is hardcoded based on the object file
-#                       name (the "mathmodule.o" file will expect an
-#                       entry point of "initmath").  This could be remedied
-#                       by the support (or simple expectation) of a "-e"
-#                       argument.
-#                   2.  The resulting shared object file is left in the
-#                       current directory with the extension .so
-#                   3.  Uncommenting the "echo" lines gives detailed output
+#                       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
+#                       -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:        Aug-6-1996  -- Take care of the compiler specific  --
+#   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
 #
@@ -42,21 +63,113 @@
 #   ========================================================================
 #
 
-# Variables
+usage="Usage: ld_so_aix [CC command] [ld arguments]"
+if test ! -n "$*"; then
+  echo $usage; exit 2
+fi
+
+# 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
 
-objfile=$1; shift
-filename=`echo $objfile | sed -e "s:.*/\([^/]*\)$:\1:" -e "s/\..*$//"`
-entry=init`echo $filename | sed "s/module.*//"`
-expfile="$filename.exp"
-impfile="python.exp"
+
+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:$impfile"
-CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -lm"
-CCARGS="$objfile $*"
+CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -lm -o $objfile"
+CCARGS="$args"
 
-# Export list generation
-makexp_aix $filename.exp "$objfile" $objfile
+# Export list generation.
+#echo makexp_aix $expfile "$objfile" $objs
+makexp_aix $expfile "$objfile" $objs
 
 # Perform the link.
 #echo $CC $CCOPT $CCARGS
@@ -64,9 +177,4 @@ $CC $CCOPT $CCARGS
 
 # Delete the module's export list file.
 # Comment this line if you need it.
-rm -f $filename.exp
-
-# Remove the exec rights on the shared module.
-#echo chmod -x `echo $objfile | sed "s/\.o$/.so/"`
-chmod -x `echo $objfile | sed "s/\.o$/.so/"`
-
+rm -f $expfile