#!/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 1.1.1.1 2007/07/10 15:04:24 duncan 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