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 overridden 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 (at] tc.cornell.edu), Keith Kwok 53 # (kkwok (at] 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 (at] imag.fr) 62 # 63 # Manus Hand (mhand (at] csn.net) -- Initial code -- 6/24/96 64 # ======================================================================== 65 # 66 67 usage="Usage: ld_so_aix [CC command] [ld arguments]" 68 if test ! -n "$*"; then 69 echo $usage; exit 2 70 fi 71 72 makexp=`dirname $0`/makexp_aix 73 test -x "${makexp}" || makexp="@abs_srcdir@/makexp_aix" 74 75 # Check for existence of compiler. 76 CC=$1; shift 77 whichcc=`which $CC` 78 79 if test ! -x "$whichcc"; then 80 echo "ld_so_aix: Compiler '$CC' not found; exiting." 81 exit 2 82 fi 83 84 if test ! -n "$*"; then 85 echo $usage; exit 2 86 fi 87 88 # Default import file for Python 89 # Can be overridden by providing a -bI: argument. 90 impfile="./python.exp" 91 92 # Parse arguments 93 while test -n "$1" 94 do 95 case "$1" in 96 -e | -Wl,-e) 97 if test -z "$2"; then 98 echo "ld_so_aix: The -e flag needs a parameter; exiting."; exit 2 99 else 100 shift; entry=$1 101 fi 102 ;; 103 -e* | -Wl,-e*) 104 entry=`echo $1 | sed -e "s/-Wl,//" -e "s/-e//"` 105 ;; 106 -o) 107 if test -z "$2"; then 108 echo "ld_so_aix: The -o flag needs a parameter; exiting."; exit 2 109 else 110 shift; objfile=$1 111 fi 112 ;; 113 -o*) 114 objfile=`echo $1 | sed "s/-o//"` 115 ;; 116 -bI:* | -Wl,-bI:*) 117 impfile=`echo $1 | sed -e "s/-Wl,//" -e "s/-bI://"` 118 ;; 119 -bE:* | -Wl,-bE:*) 120 expfile=`echo $1 | sed -e "s/-Wl,//" -e "s/-bE://"` 121 ;; 122 *.o | *.a) 123 objs="$objs $1" 124 args="$args $1" 125 ;; 126 -bM:* | -Wl,-bM:* | -H* | -Wl,-H* | -T* | -Wl,-T* | -lm) 127 ;; 128 *) 129 args="$args $1" 130 ;; 131 esac 132 shift 133 done 134 135 if test "$objfile" = "libpython@VERSION@.so"; then 136 ldsocoremode="true" 137 fi 138 139 if test -z "$objs"; then 140 echo "ld_so_aix: No input files; exiting." 141 exit 2 142 elif test ! -r "$impfile" -a -z "$ldsocoremode"; then 143 echo "ld_so_aix: Import file '$impfile' not found or not readable; exiting." 144 exit 2 145 fi 146 147 # If -o wasn't specified, assume "-o shr.o" 148 if test -z "$objfile"; then 149 objfile=shr.o 150 fi 151 152 filename=`basename $objfile | sed "s/\.[^.]*$//"` 153 154 # If -bE: wasn't specified, assume "-bE:$filename.exp" 155 if test -z "$expfile"; then 156 expfile="$filename.exp" 157 fi 158 159 # Default entry symbol for Python modules = init[modulename] 160 # Can be overridden by providing a -e argument. 161 if test -z "$entry"; then 162 entry=init`echo $filename | sed "s/module.*//"` 163 fi 164 165 #echo "ld_so_aix: Debug info section" 166 #echo " -> output file : $objfile" 167 #echo " -> import file : $impfile" 168 #echo " -> export file : $expfile" 169 #echo " -> entry point : $entry" 170 #echo " -> object files: $objs" 171 #echo " -> CC arguments: $args" 172 173 if test -z "$ldsocoremode"; then 174 CCOPT="-Wl,-e$entry -Wl,-bE:$expfile -Wl,-bI:$impfile -Wl,-bhalt:4" 175 else 176 CCOPT="-Wl,-bnoentry -Wl,-bE:$expfile -Wl,-bhalt:4" 177 fi 178 CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -Wl,-brtl -Wl,-bnortllib -lm -o $objfile" 179 180 CCARGS="$args" 181 182 # Export list generation. 183 #echo $makexp $expfile "$objfile" $objs 184 $makexp $expfile "$objfile" $objs 185 186 # Perform the link. 187 #echo $CC $CCOPT $CCARGS 188 $CC $CCOPT $CCARGS 189 retval=$? 190 191 # Delete the module's export list file. 192 # Comment this line if you need it. 193 rm -f $expfile 194 195 exit $retval 196
