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#!/bin/sh
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#
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# ===========================================================================
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# FILE: makexp_aix
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# TYPE: standalone executable
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# SYSTEM: AIX 3.2.5 and AIX 4
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#
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# DESCRIPTION: This script creates an export list of ALL global symbols
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# from a list of object or archive files.
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#
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# USAGE: makexp_aix <OutputFile> "<FirstLine>" <InputFile> ...
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#
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# where:
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# <OutputFile> is the target export list filename.
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# <FirstLine> is the path/file string to be appended
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# after the "#!" symbols in the first line of the
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# export file. Passing "" means deferred resolution.
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# <InputFile> is an object (.o) or an archive file (.a).
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#
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# HISTORY:
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# 3-Apr-1998 -- remove C++ entries of the form Class::method
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# Vladimir Marangozov
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#
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# 1-Jul-1996 -- added header information
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# Vladimir Marangozov
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#
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# 28-Jun-1996 -- initial code
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# Vladimir Marangozov (Vladimir.Marangozov@imag.fr)
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# ==========================================================================
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# Variables
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expFileName=$1
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toAppendStr=$2
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shift; shift;
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inputFiles=$*
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automsg="Generated automatically by makexp_aix"
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notemsg="NOTE: lists _all_ global symbols defined in the above file(s)."
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curwdir=`pwd`
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# Create the export file and setup the header info
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echo "#!"$toAppendStr > $expFileName
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echo "*" >> $expFileName
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echo "* $automsg (`date -u`)" >> $expFileName
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echo "*" >> $expFileName
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echo "* Base Directory: $curwdir" >> $expFileName
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echo "* Input File(s) : $inputFiles" >> $expFileName
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echo "*" >> $expFileName
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echo "* $notemsg" >> $expFileName
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echo "*" >> $expFileName
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# Extract the symbol list using 'nm' which produces quite
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# different output under AIX 4 than under AIX 3.2.5.
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# The following handles both versions by using a common flagset.
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# Here are some hidden tricks:
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# 1. Use /usr/ccs/bin/nm. Relevant to AIX 3.2.5 which has
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# another version under /usr/ucb/bin/nm.
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# 2. Use the -B flag to have a standard BSD representation
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# of the symbol list on both AIX 3.2.5 and AIX 4. The "-B"
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# flag is missing in the AIX 3.2.5 online usage help of 'nm'.
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# 3. Use the -x flag to have a hex representation of the symbol
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# values. This fills the leading whitespaces on AIX 4,
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# thus simplifying the sed statement.
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# 4. Eliminate all entries except those with either "B", "D"
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# or "T" key letters. We are interested only in the global
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# (extern) BSS, DATA and TEXT symbols. With the same statement
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# we eliminate object member lines relevant to AIX 4.
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# 5. Eliminate entries containing a dot. We can have a dot only
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# as a symbol prefix, but such symbols are undefined externs.
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# 6. Eliminate everything including the key letter, so that we're
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# left with just the symbol name.
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# 7. Eliminate all entries containing two colons, like Class::method
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#
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/usr/ccs/bin/nm -Bex $inputFiles \
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| sed -e '/ [^BDT] /d' -e '/\./d' -e 's/.* [BDT] //' -e '/::/d' \
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| sort | uniq >> $expFileName
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