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+& This command macro configures perl to build with
+& either the alpha or generally-available version of
+& VOS POSIX.1 support.
+& Written 00-10-24 by Paul Green (Paul_Green@stratus.com)
+&
+&begin_parameters
+ version option(-version)name,allow(alpha,ga),=ga
+&end_parameters
+&echo command_lines
+&
+&if (file_info config.&version&.def date_modified) > (file_info config.&version&.h date_modified)
+&then &do
+!copy_file config.&version&.def config.def -delete
+&
+& NOTE: We must invoke Perl 5 not Perl 4. If necessary, edit the
+& next line to say "perl5 config.pl".
+&
+!perl config.pl
+!rename config.h.new config.&version&.h -delete
+!delete_file config.def
+&end
+&
+&if (file_info config.&version&.h date_modified) ^= (file_info config.h date_modified)
+&then !copy_file config.&version&.h config.h -delete -keep_dates