# 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
#
# ========================================================================
#
-# 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
# 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
projects / thirdparty / Python / cpython.git / commitdiff
