#!/bin/sh

 #

 # ldAix ldCmd ldArg ldArg ...

 #

 # This shell script provides a wrapper for ld under AIX in order to

 # create the .exp file required for linking.  Its arguments consist

 # of the name and arguments that would normally be provided to the

 # ld command.  This script extracts the names of the object files

 # from the argument list, creates a .exp file describing all of the

 # symbols exported by those files, and then invokes "ldCmd" to

 # perform the real link.

 #

 # RCS: @(#) $Id: ldAix,v 1.4 2002/09/27 01:28:26 hobbs Exp $

 # Extract from the arguments the names of all of the object files.

 args=$*

 ofiles=""

 for i do

     x=`echo $i | grep '[^.].o$'`

     if test "$x" != ""; then

 	ofiles="$ofiles $i"

     fi

 done

 # Extract the name of the object file that we're linking.

 outputFile=`echo $args | sed -e 's/.*-o \([^ ]*\).*/\1/'`

 # Create the export file from all of the object files, using nm followed

 # by sed editing.  Here are some tricky aspects of this:

 #

 # 1. Nm produces different output under AIX 4.1 than under AIX 3.2.5;

 #    the following statements handle both versions.

 # 2. Use the -g switch to nm instead of -e under 4.1 (this shows just

 #    externals, not statics;  -g isn't available under 3.2.5, though).

 # 3. Use the -X32_64 switch to nm on AIX-4+ to handle 32 or 64bit compiles.

 # 4. Eliminate lines that end in ":": these are the names of object

 #    files (relevant in 4.1 only).

 # 5. Eliminate entries with the "U" key letter;  these are undefined

 #    symbols (relevant in 4.1 only).

 # 6. Eliminate lines that contain the string "0|extern" preceded by space;

 #    in 3.2.5, these are undefined symbols (address 0).

 # 7. Eliminate lines containing the "unamex" symbol.  In 3.2.5, these

 #    are also undefined symbols.

 # 8. If a line starts with ".", delete the leading ".", since this will

 #    just cause confusion later.

 # 9. Eliminate everything after the first field in a line, so that we're

 #    left with just the symbol name.

 nmopts="-g -C"

 osver=`uname -v`

 if test $osver -eq 3; then

   nmopts="-e"

 fi

 if test $osver -gt 3; then

   nmopts="$nmopts -X32_64"

 fi

 rm -f lib.exp

 echo "#! $outputFile" >lib.exp

 /usr/ccs/bin/nm $nmopts -h $ofiles | sed -e '/:$/d' -e '/ U /d' -e '/[ 	]0|extern/d' -e '/unamex/d' -e 's/^\.//' -e 's/[ 	|].*//' | sort | uniq >>lib.exp

 # If we're linking a .a file, then link all the objects together into a 

 # single file "shr.o" and then put that into the archive.  Otherwise link 

 # the object files directly into the .a file.

 outputFile=`echo $args | sed -e 's/.*-o \([^ ]*\).*/\1/'`

 noDotA=`echo $outputFile | sed -e '/\.a$/d'`

 echo "noDotA=\"$noDotA\""

 if test "$noDotA" = "" ; then

     linkArgs=`echo $args | sed -e 's/-o .*\.a /-o shr.o /'`

     echo $linkArgs

     eval $linkArgs

     echo ar cr $outputFile shr.o

     ar cr $outputFile shr.o

     rm -f shr.o

 else

     eval $args

 fi