| 1 | #!/bin/sh
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| 2 | #
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| 3 | # ========================================================================
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| 4 | # FILE: ld_so_aix
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| 5 | # TYPE: executable, uses makexp_aix
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| 6 | # SYSTEM: AIX
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| 7 | #
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| 8 | # DESCRIPTION: Creates a shareable .o from a set of pre-compiled
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| 9 | # (unshared) .o files
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| 10 | #
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| 11 | # USAGE: ld_so_aix [CC] [arguments]
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| 12 | #
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| 13 | # ARGUMENTS: Same as for "ld". The following arguments are processed
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| 14 | # or supplied by this script (those marked with an asterisk
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| 15 | # can be overriden from command line):
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| 16 | #
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| 17 | # Argument Default value
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| 18 | # (*) -o [OutputFileName] -o shr.o
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| 19 | # (*) -e [EntryPointLabel] -e init[OutputBaseName]
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| 20 | # (*) -bE:[ExportFile] -bE:[OutputBaseName].exp
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| 21 | # (*) -bI:[ImportFile] -bI:./python.exp
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| 22 | # -bM:[ModuleType] -bM:SRE
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| 23 | # -bhalt:[Number] -bhalt:4
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| 24 | # -T[Number] -T512
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| 25 | # -H[Number] -H512
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| 26 | # -lm
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| 27 | #
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| 28 | # The compiler specific ("-lc" or "-lc_r", "-lpthreads",...)
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| 29 | # arguments will be automatically passed to "ld" according
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| 30 | # to the CC command provided as a first argument to this
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| 31 | # script. Usually, the same CC command was used to produce
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| 32 | # the pre-compiled .o file(s).
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| 33 | #
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| 34 | # NOTES: 1. Since "ld_so_aix" was originally written for building
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| 35 | # shared modules for the Python interpreter, the -e and
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| 36 | # -bI default values match Python's conventions. In
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| 37 | # Python, the entry point for a shared module is based
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| 38 | # on the module's name (e.g., the "mathmodule" will
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| 39 | # expect an entry point of "initmath").
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| 40 | # 2. The script accepts multiple .o or .a input files and
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| 41 | # creates a single (shared) output file. The export list
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| 42 | # that is created is based on the output file's basename
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| 43 | # with the suffix ".exp".
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| 44 | # 3. The resulting shared object file is left in the
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| 45 | # current directory.
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| 46 | # 4. Uncommenting the "echo" lines gives detailed output
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| 47 | # about the commands executed in the script.
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| 48 | #
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| 49 | #
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| 50 | # HISTORY: Oct-1996 -- Support added for multiple .o files --
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| 51 | # -- and optional arguments processing. --
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| 52 | # Chris Myers (myers@tc.cornell.edu), Keith Kwok
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| 53 | # (kkwok@tc.cornell.edu) and Vladimir Marangozov
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| 54 | #
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| 55 | # Aug-6-1996 -- Take care of the compiler specific --
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| 56 | # -- args by leaving CC to invoke "ld". --
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| 57 | # Vladimir Marangozov
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| 58 | #
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| 59 | # Jul-1-1996 -- Make sure to use /usr/ccs/bin/ld --
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| 60 | # -- Use makexp_aix for the export list. --
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| 61 | # Vladimir Marangozov (Vladimir.Marangozov@imag.fr)
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| 62 | #
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| 63 | # Manus Hand (mhand@csn.net) -- Initial code -- 6/24/96
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| 64 | # ========================================================================
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| 65 | #
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| 66 |
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| 67 | usage="Usage: ld_so_aix [CC command] [ld arguments]"
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| 68 | if test ! -n "$*"; then
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| 69 | echo $usage; exit 2
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| 70 | fi
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| 71 |
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| 72 | makexp=`dirname $0`/makexp_aix
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| 73 |
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| 74 | # Check for existence of compiler.
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| 75 | CC=$1; shift
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| 76 | whichcc=`which $CC`
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| 77 |
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| 78 | if test ! -x "$whichcc"; then
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| 79 | echo "ld_so_aix: Compiler '$CC' not found; exiting."
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| 80 | exit 2
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| 81 | fi
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| 82 |
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| 83 | if test ! -n "$*"; then
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| 84 | echo $usage; exit 2
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| 85 | fi
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| 86 |
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| 87 | # Default import file for Python
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| 88 | # Can be overriden by providing a -bI: argument.
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| 89 | impfile="./python.exp"
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| 90 |
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| 91 | # Parse arguments
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| 92 | while test -n "$1"
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| 93 | do
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| 94 | case "$1" in
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| 95 | -e | -Wl,-e)
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| 96 | if test -z "$2"; then
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| 97 | echo "ld_so_aix: The -e flag needs a parameter; exiting."; exit 2
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| 98 | else
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| 99 | shift; entry=$1
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| 100 | fi
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| 101 | ;;
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| 102 | -e* | -Wl,-e*)
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| 103 | entry=`echo $1 | sed -e "s/-Wl,//" -e "s/-e//"`
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| 104 | ;;
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| 105 | -o)
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| 106 | if test -z "$2"; then
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| 107 | echo "ld_so_aix: The -o flag needs a parameter; exiting."; exit 2
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| 108 | else
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| 109 | shift; objfile=$1
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| 110 | fi
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| 111 | ;;
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| 112 | -o*)
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| 113 | objfile=`echo $1 | sed "s/-o//"`
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| 114 | ;;
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| 115 | -bI:* | -Wl,-bI:*)
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| 116 | impfile=`echo $1 | sed -e "s/-Wl,//" -e "s/-bI://"`
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| 117 | ;;
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| 118 | -bE:* | -Wl,-bE:*)
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| 119 | expfile=`echo $1 | sed -e "s/-Wl,//" -e "s/-bE://"`
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| 120 | ;;
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| 121 | *.o | *.a)
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| 122 | objs="$objs $1"
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| 123 | args="$args $1"
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| 124 | ;;
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| 125 | -bM:* | -Wl,-bM:* | -H* | -Wl,-H* | -T* | -Wl,-T* | -lm)
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| 126 | ;;
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| 127 | *)
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| 128 | args="$args $1"
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| 129 | ;;
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| 130 | esac
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| 131 | shift
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| 132 | done
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| 133 |
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| 134 | if test "$objfile" = "libpython@VERSION@.so"; then
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| 135 | ldsocoremode="true"
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| 136 | fi
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| 137 |
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| 138 | if test -z "$objs"; then
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| 139 | echo "ld_so_aix: No input files; exiting."
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| 140 | exit 2
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| 141 | elif test ! -r "$impfile" -a -z "$ldsocoremode"; then
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| 142 | echo "ld_so_aix: Import file '$impfile' not found or not readable; exiting."
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| 143 | exit 2
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| 144 | fi
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| 145 |
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| 146 | # If -o wasn't specified, assume "-o shr.o"
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| 147 | if test -z "$objfile"; then
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| 148 | objfile=shr.o
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| 149 | fi
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| 150 |
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| 151 | filename=`basename $objfile | sed "s/\.[^.]*$//"`
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| 152 |
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| 153 | # If -bE: wasn't specified, assume "-bE:$filename.exp"
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| 154 | if test -z "$expfile"; then
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| 155 | expfile="$filename.exp"
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| 156 | fi
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| 157 |
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| 158 | # Default entry symbol for Python modules = init[modulename]
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| 159 | # Can be overriden by providing a -e argument.
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| 160 | if test -z "$entry"; then
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| 161 | entry=init`echo $filename | sed "s/module.*//"`
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| 162 | fi
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| 163 |
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| 164 | #echo "ld_so_aix: Debug info section"
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| 165 | #echo " -> output file : $objfile"
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| 166 | #echo " -> import file : $impfile"
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| 167 | #echo " -> export file : $expfile"
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| 168 | #echo " -> entry point : $entry"
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| 169 | #echo " -> object files: $objs"
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| 170 | #echo " -> CC arguments: $args"
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| 171 |
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| 172 | if test -z "$ldsocoremode"; then
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| 173 | CCOPT="-Wl,-e$entry -Wl,-bE:$expfile -Wl,-bI:$impfile -Wl,-bhalt:4"
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| 174 | else
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| 175 | CCOPT="-Wl,-bnoentry -Wl,-bE:$expfile -Wl,-bhalt:4"
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| 176 | fi
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| 177 | CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -Wl,-brtl -Wl,-bnortllib -lm -o $objfile"
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| 178 |
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| 179 | CCARGS="$args"
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| 180 |
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| 181 | # Export list generation.
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| 182 | #echo $makexp $expfile "$objfile" $objs
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| 183 | $makexp $expfile "$objfile" $objs
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| 184 |
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| 185 | # Perform the link.
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| 186 | #echo $CC $CCOPT $CCARGS
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| 187 | $CC $CCOPT $CCARGS
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| 188 | retval=$?
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| 189 |
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| 190 | # Delete the module's export list file.
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| 191 | # Comment this line if you need it.
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| 192 | rm -f $expfile
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| 193 |
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| 194 | exit $retval
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