=head1 NAME
-README.tru64 - Perl version 5 on Tru64 (formerly known as Digital UNIX formerly known as DEC OSF/1) systems
+perltru64 - Perl version 5 on Tru64 (formerly known as Digital UNIX formerly known as DEC OSF/1) systems
=head1 DESCRIPTION
process limits, and lowers the optimization for the toke.c if
necessary, and also gives advice on how to raise the process limits.
+Also, Configure might abort with
+
+ Build a threading Perl? [n]
+ Configure[2437]: Syntax error at line 1 : 'config.sh' is not expected.
+
+This indicates that Configure is being run with a broken Korn shell
+(even though you think you are using a Bourne shell by using
+"sh Configure" or "./Configure"). The Korn shell bug has been reported
+to Compaq as of February 1999 but in the meanwhile, the reason ksh is
+being used is that you have the environment variable BIN_SH set to
+'xpg4'. This causes /bin/sh to delegate its duties to /bin/posix/sh
+(a ksh). Unset the environment variable and rerun Configure.
+
=head2 Using Large Files with Perl on Tru64
In Tru64 Perl is automatically able to use large files, that is,
older operating releases like 3.2 aren't probably going to work
properly with threads.
+In Tru64 V5 (at least V5.1A, V5.1B) you cannot build threaded Perl with gcc
+because the system header <pthread.h> explicitly checks for supported
+C compilers, gcc (at least 3.2.2) not being one of them. But the
+system C compiler should work just fine.
+
=head2 Long Doubles on Tru64
You cannot Configure Perl to use long doubles unless you have at least
has not yet been patched, you'll get a warning from Configure when
selecting long doubles.
-=head2 db-hash.t failing on Tru64
+=head2 DB_File tests failing on Tru64
+
+The DB_File tests (db-btree.t, db-hash.t, db-recno.t) may fail you
+have installed a newer version of Berkeley DB into the system and the
+-I and -L compiler and linker flags introduce version conflicts with
+the DB 1.85 headers and libraries that came with the Tru64. For example,
+mixing a DB v2 library with the DB v1 headers is a bad idea. Watch
+out for Configure options -Dlocincpth and -Dloclibpth, and check your
+/usr/local/include and /usr/local/lib since they are included by default.
-The Berkeley DB 1.85 coming with the Tru64 is unfortunately buggy.
-In general in Tru64 V4.* it seemed to be more stable, but in V5.*
-something broke (even though the DB stayed at release 1.85) and
-the DB_File extension test db-hash.t may fail by dumping core after
-the subtest 21. There really is no good cure as of Tru64 V5.1A expect
-installing a newer Berkeley DB and supplying the right directories for
--Dlocincpth=/some/include and -Dloclibpth=/some/lib when running Configure
-B<and> before running "make test" setting your LD_LIBRARY_PATH to /some/lib.
+The second option is to explicitly instruct Configure to detect the
+newer Berkeley DB installation, by supplying the right directories with
+C<-Dlocincpth=/some/include> and C<-Dloclibpth=/some/lib> B<and> before
+running "make test" setting your LD_LIBRARY_PATH to F</some/lib>.
-You can also work around the problem by disabling the DB_File by
-specifying -Ui_db to Configure, and then using the BerkeleyFile module
-from CPAN instead of DB_File. The BerkeleyFile works with Berkeley DB
-versions 2.* or greater.
+The third option is to work around the problem by disabling the
+DB_File completely when build Perl by specifying -Ui_db to Configure,
+and then using the BerkeleyDB module from CPAN instead of DB_File.
+The BerkeleyDB works with Berkeley DB versions 2.* or greater.
-The Berkeley DB 4.0.14 has been tested with Tru64 V5.1A and found
-to work. The latest Berkeley DB can be found from F<http://www.sleepycat.com>.
+The Berkeley DB 4.1.25 has been tested with Tru64 V5.1A and found
+to work. The latest Berkeley DB can be found from L<http://www.sleepycat.com>.
=head2 64-bit Perl on Tru64
When compiling Perl in Tru64 you may (depending on the compiler
release) see two warnings like this
- cc: Warning: numeric.c, line 104: In this statement, floating-point overflow occurs in evaluating the expression "1.8e308". (floatoverfl)
+ cc: Warning: numeric.c, line 104: In this statement, floating-point
+ overflow occurs in evaluating the expression "1.8e308". (floatoverfl)
return HUGE_VAL;
-----------^
and when compiling the POSIX extension
- cc: Warning: const-c.inc, line 2007: In this statement, floating-point overflow occurs in evaluating the expression "1.8e308". (floatoverfl)
+ cc: Warning: const-c.inc, line 2007: In this statement, floating-point
+ overflow occurs in evaluating the expression "1.8e308". (floatoverfl)
return HUGE_VAL;
-------------------^
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