1 | |
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2 | # |
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3 | # ldAix ldCmd ldArg ldArg ... |
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4 | # |
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5 | # This shell script provides a wrapper for ld under AIX in order to |
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6 | # create the .exp file required for linking. Its arguments consist |
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7 | # of the name and arguments that would normally be provided to the |
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8 | # ld command. This script extracts the names of the object files |
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9 | # from the argument list, creates a .exp file describing all of the |
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10 | # symbols exported by those files, and then invokes "ldCmd" to |
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11 | # perform the real link. |
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12 | # |
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13 | # SCCS: @(#) ldAix 1.8 97/02/21 14:50:27 |
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14 | |
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15 | # Extract from the arguments the names of all of the object files. |
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16 | |
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17 | args=$* |
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18 | ofiles="" |
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19 | for i do |
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20 | x=`echo $i | grep '[^.].o$'` |
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21 | if test "$x" != ""; then |
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22 | ofiles="$ofiles $i" |
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23 | fi |
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24 | done |
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25 | |
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26 | # Create the export file from all of the object files, using nm followed |
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27 | # by sed editing. Here are some tricky aspects of this: |
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28 | # |
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29 | # 1. Nm produces different output under AIX 4.1 than under AIX 3.2.5; |
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30 | # the following statements handle both versions. |
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31 | # 2. Use the -g switch to nm instead of -e under 4.1 (this shows just |
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32 | # externals, not statics; -g isn't available under 3.2.5, though). |
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33 | # 3. Eliminate lines that end in ":": these are the names of object |
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34 | # files (relevant in 4.1 only). |
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35 | # 4. Eliminate entries with the "U" key letter; these are undefined |
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36 | # symbols (relevant in 4.1 only). |
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37 | # 5. Eliminate lines that contain the string "0|extern" preceded by space; |
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38 | # in 3.2.5, these are undefined symbols (address 0). |
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39 | # 6. Eliminate lines containing the "unamex" symbol. In 3.2.5, these |
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40 | # are also undefined symbols. |
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41 | # 7. If a line starts with ".", delete the leading ".", since this will |
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42 | # just cause confusion later. |
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43 | # 8. Eliminate everything after the first field in a line, so that we're |
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44 | # left with just the symbol name. |
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45 | |
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46 | nmopts="-g -C" |
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47 | osver=`uname -v` |
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48 | if test $osver -eq 3; then |
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49 | nmopts="-e" |
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50 | fi |
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51 | rm -f lib.exp |
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52 | echo "#! " >lib.exp |
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53 | /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 |
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54 | |
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55 | # Extract the name of the object file that we're linking. If it's a .a |
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56 | # file, then link all the objects together into a single file "shr.o" |
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57 | # and then put that into the archive. Otherwise link the object files |
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58 | # directly into the .a file. |
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59 | |
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60 | outputFile=`echo $args | sed -e 's/.*-o \([^ ]*\).*/\1/'` |
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61 | noDotA=`echo $outputFile | sed -e '/\.a$/d'` |
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62 | echo "noDotA=\"$noDotA\"" |
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63 | if test "$noDotA" = "" ; then |
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64 | linkArgs=`echo $args | sed -e 's/-o .*\.a /-o shr.o /'` |
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65 | echo $linkArgs |
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66 | eval $linkArgs |
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67 | echo ar cr $outputFile shr.o |
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68 | ar cr $outputFile shr.o |
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69 | rm -f shr.o |
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70 | else |
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71 | eval $args |
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72 | fi |
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