support optional crypt() with PERL_OBJECT

[p5sagit/p5-mst-13.2.git] / perl_exp.SH

diff --git a/perl_exp.SH b/perl_exp.SH
index 06b587f..b8b2907 100644 (file)
--- a/perl_exp.SH
+++ b/perl_exp.SH
@@ -1,18 +1,28 @@
 #!/bin/sh
 #
-# Written: Nov 1994 Wayne Scott (wscott@ichips.intel.com)
+# Written: Nov 1994 Wayne Scott <wscott@ichips.intel.com>
+#
+# Updated: 1997-8 Jarkko Hietaniemi <jhi@iki.fi>
 #
 # Create the export list for perl.
 # Needed by AIX to do dynamic linking.
 #
-# This simple program relys on 'global.sym' and other *.sym files
-# being up to date with all of the global symbols that a dynamic
-# link library might want to access.
+# This simple program relies on 'global.sym' and few other *.sym files
+# and the *var*.h files being up to date with all of the global
+# symbols that a dynamic link library might want to access.
 #
-# Most symbols have a Perl_ prefix because that's what embed.h sticks
-# in front of them.  Variations depend on binary compatibility with
-# Perl 5.003.
+# Most symbols have a Perl_ or PL_prefix because that's what embed.h
+# sticks in front of them.
 #
+# AIX requires the list of external symbols (variables or functions)
+# that are made available for another executable object file the import.
+# The list is called the export file and it is a simple text file.
+# The first line must be
+#!
+# That is, hash-bang, pound-shout, however you want to call it.
+# The remainder of the file are the names of the symbols, one per line.
+# The file is then given to the system loader (cc/xlc command line)
+# as -bE:export.file.
 
 case $CONFIG in
 '')
@@ -38,24 +48,15 @@ echo "Extracting perl.exp"
 rm -f perl.exp
 echo "#!" > perl.exp
 
-case "$bincompat3" in
-y*)
-       global=/tmp/exp$$g
-       interp=/tmp/exp$$i
-       compat3=/tmp/exp$$c
-       grep '^[A-Za-z]' global.sym | sort >$global
-       grep '^[A-Za-z]' interp.sym | sort >$interp
-       grep '^[A-Za-z]' compat3.sym | sort >$compat3
-       comm -23 $global $compat3 | sed 's/^/Perl_/' >> perl.exp
-       comm -12 $interp $compat3 | sed 's/^/Perl_/' >> perl.exp
-       comm -12 $global $compat3 >> perl.exp
-       comm -23 $interp $compat3 >> perl.exp
-       rm -f $global $interp $compat3
-       ;;
-*)
-       sed -n '/^[A-Za-z]/ s/^/Perl_/p' global.sym interp.sym >> perl.exp
-       ;;
-esac
+# No compat3 since 5.004_50.
+# perlio.sym will added below if needed.
+syms="global.sym interp.sym thread.sym"
+
+sed -n '/^[A-Za-z]/ s/^/Perl_/p' $syms                 >> perl.exp
+
+sed -n 's/^PERLVAR.*(G\([^[,]*\).*/PL_\1/p' perlvars.h >> perl.exp
+sed -n 's/^PERLVAR.*(I\([^[,]*\).*/PL_\1/p' intrpvar.h >> perl.exp
+sed -n 's/^PERLVAR.*(T\([^[,]*\).*/PL_\1/p' thrdvar.h  >> perl.exp
 
 # 
 # If we use the PerlIO abstraction layer, add its symbols
@@ -105,3 +106,8 @@ Perl_calloc
 Perl_realloc
 Perl_free
 END
+
+# The shebang line nicely sorts as the first one.
+sort -o perl.exp -u perl.exp
+
+# eof