/Modules/ld_so_aix
Shell | 190 lines | 81 code | 20 blank | 89 comment | 10 complexity | 83475aef231af282a7e339ff5b52ca1a MD5 | raw file
1#!/bin/sh 2# 3# ======================================================================== 4# FILE: ld_so_aix 5# TYPE: executable, uses makexp_aix 6# SYSTEM: AIX 7# 8# DESCRIPTION: Creates a shareable .o from a set of pre-compiled 9# (unshared) .o files 10# 11# USAGE: ld_so_aix [CC] [arguments] 12# 13# ARGUMENTS: Same as for "ld". The following arguments are processed 14# or supplied by this script (those marked with an asterisk 15# can be overriden from command line): 16# 17# Argument Default value 18# (*) -o [OutputFileName] -o shr.o 19# (*) -e [EntryPointLabel] -e init[OutputBaseName] 20# (*) -bE:[ExportFile] -bE:[OutputBaseName].exp 21# (*) -bI:[ImportFile] -bI:./python.exp 22# -bM:[ModuleType] -bM:SRE 23# -bhalt:[Number] -bhalt:4 24# -T[Number] -T512 25# -H[Number] -H512 26# -lm 27# 28# The compiler specific ("-lc" or "-lc_r", "-lpthreads",...) 29# arguments will be automatically passed to "ld" according 30# to the CC command provided as a first argument to this 31# script. Usually, the same CC command was used to produce 32# the pre-compiled .o file(s). 33# 34# NOTES: 1. Since "ld_so_aix" was originally written for building 35# shared modules for the Python interpreter, the -e and 36# -bI default values match Python's conventions. In 37# Python, the entry point for a shared module is based 38# on the module's name (e.g., the "mathmodule" will 39# expect an entry point of "initmath"). 40# 2. The script accepts multiple .o or .a input files and 41# creates a single (shared) output file. The export list 42# that is created is based on the output file's basename 43# with the suffix ".exp". 44# 3. The resulting shared object file is left in the 45# current directory. 46# 4. Uncommenting the "echo" lines gives detailed output 47# about the commands executed in the script. 48# 49# 50# HISTORY: Oct-1996 -- Support added for multiple .o files -- 51# -- and optional arguments processing. -- 52# Chris Myers (myers@tc.cornell.edu), Keith Kwok 53# (kkwok@tc.cornell.edu) and Vladimir Marangozov 54# 55# Aug-6-1996 -- Take care of the compiler specific -- 56# -- args by leaving CC to invoke "ld". -- 57# Vladimir Marangozov 58# 59# Jul-1-1996 -- Make sure to use /usr/ccs/bin/ld -- 60# -- Use makexp_aix for the export list. -- 61# Vladimir Marangozov (Vladimir.Marangozov@imag.fr) 62# 63# Manus Hand (mhand@csn.net) -- Initial code -- 6/24/96 64# ======================================================================== 65# 66 67usage="Usage: ld_so_aix [CC command] [ld arguments]" 68if test ! -n "$*"; then 69 echo $usage; exit 2 70fi 71 72makexp=`dirname $0`/makexp_aix 73 74# Check for existence of compiler. 75CC=$1; shift 76whichcc=`which $CC` 77 78if test ! -x "$whichcc"; then 79 echo "ld_so_aix: Compiler '$CC' not found; exiting." 80 exit 2 81fi 82 83if test ! -n "$*"; then 84 echo $usage; exit 2 85fi 86 87# Default import file for Python 88# Can be overriden by providing a -bI: argument. 89impfile="./python.exp" 90 91# Parse arguments 92while test -n "$1" 93do 94 case "$1" in 95 -e | -Wl,-e) 96 if test -z "$2"; then 97 echo "ld_so_aix: The -e flag needs a parameter; exiting."; exit 2 98 else 99 shift; entry=$1 100 fi 101 ;; 102 -e* | -Wl,-e*) 103 entry=`echo $1 | sed -e "s/-Wl,//" -e "s/-e//"` 104 ;; 105 -o) 106 if test -z "$2"; then 107 echo "ld_so_aix: The -o flag needs a parameter; exiting."; exit 2 108 else 109 shift; objfile=$1 110 fi 111 ;; 112 -o*) 113 objfile=`echo $1 | sed "s/-o//"` 114 ;; 115 -bI:* | -Wl,-bI:*) 116 impfile=`echo $1 | sed -e "s/-Wl,//" -e "s/-bI://"` 117 ;; 118 -bE:* | -Wl,-bE:*) 119 expfile=`echo $1 | sed -e "s/-Wl,//" -e "s/-bE://"` 120 ;; 121 *.o | *.a) 122 objs="$objs $1" 123 args="$args $1" 124 ;; 125 -bM:* | -Wl,-bM:* | -H* | -Wl,-H* | -T* | -Wl,-T* | -lm) 126 ;; 127 *) 128 args="$args $1" 129 ;; 130 esac 131 shift 132done 133 134 135if test -z "$objs"; then 136 echo "ld_so_aix: No input files; exiting." 137 exit 2 138elif test ! -r "$impfile"; then 139 echo "ld_so_aix: Import file '$impfile' not found or not readable; exiting." 140 exit 2 141fi 142 143# If -o wasn't specified, assume "-o shr.o" 144if test -z "$objfile"; then 145 objfile=shr.o 146fi 147 148filename=`basename $objfile | sed "s/\.[^.]*$//"` 149 150# If -bE: wasn't specified, assume "-bE:$filename.exp" 151if test -z "$expfile"; then 152 expfile="$filename.exp" 153fi 154 155# Default entry symbol for Python modules = init[modulename] 156# Can be overriden by providing a -e argument. 157if test -z "$entry"; then 158 entry=init`echo $filename | sed "s/module.*//"` 159fi 160 161#echo "ld_so_aix: Debug info section" 162#echo " -> output file : $objfile" 163#echo " -> import file : $impfile" 164#echo " -> export file : $expfile" 165#echo " -> entry point : $entry" 166#echo " -> object files: $objs" 167#echo " -> CC arguments: $args" 168 169CCOPT="-Wl,-e$entry -Wl,-bE:$expfile -Wl,-bI:$impfile -Wl,-bhalt:4" 170CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -lm -o $objfile" 171# Note: to use dynamic libraries like libtcl8.4.so and libtk8.4.so 172# you may need to replace the second CCOPT line above with the following: 173# CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -brtl -bnortllib -lm -o $objfile" 174 175CCARGS="$args" 176 177# Export list generation. 178#echo $makexp $expfile "$objfile" $objs 179$makexp $expfile "$objfile" $objs 180 181# Perform the link. 182#echo $CC $CCOPT $CCARGS 183$CC $CCOPT $CCARGS 184retval=$? 185 186# Delete the module's export list file. 187# Comment this line if you need it. 188rm -f $expfile 189 190exit $retval