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NAMEperltru64 - Perl version 5 on Tru64 (formerly known as Digital UNIX formerly known as DEC OSF/1) systems
DESCRIPTIONThis document describes various features of
Compiling Perl 5 on Tru64The recommended compiler to use in Tru64 is the native C compiler. The native compiler produces much faster code (the speed difference is noticeable: several dozen percentages) and also more correct code: if you are considering using the
Both the native cc and gcc seem to consume lots of memory when building Perl. toke.c is a known trouble spot when optimizing: 256 megabytes of data section seems to be enough. Another known trouble spot is the mktables script which builds the Unicode support tables. The default setting of the process data section in Tru64 should be one gigabyte, but some sites/setups might have lowered that. The configuration process of Perl checks for too low process limits, and lowers the optimization for the toke.c if necessary, and also gives advice on how to raise the process limits (for example: "ulimit -d 262144")
Also, Configure might abort with
Build a threading Perl? [n] Configure: 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
Using Large Files with Perl on Tru64In Tru64 Perl is automatically able to use large files, that is, files larger than 2 gigabytes, there is no need to use the Configure -Duselargefiles option as described in
Threaded Perl on Tru64If you want to use threads, you should primarily use the Perl 5.8.0 threads model by running Configure with -Duseithreads.
Perl threading is going to work only in Tru64 4.0 and newer releases, 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.
Long Doubles on Tru64You cannot Configure Perl to use long doubles unless you have at least Tru64 V5.0, the long double support simply wasn't functional enough before that. Perl's Configure will override attempts to use the long doubles (you can notice this by Configure finding out that the modfl() function does not work as it should).
At the time of this writing (June 2002), there is a known bug in the Tru64 libc printing of long doubles when not using ``e'' notation. The values are correct and usable, but you only get a limited number of digits displayed unless you force the issue by using "printf "%.33e",$num" or the like. For Tru64 versions V5.0A through V5.1A, a patch is expected sometime after perl 5.8.0 is released. If your libc has not yet been patched, you'll get a warning from Configure when selecting long doubles.
DB_File tests failing on Tru64The DB_File tests (db-btree.t, db-hash.t, db-recno.t) may fail you have installed a newer version of Berkeley
The second option is to explicitly instruct Configure to detect the newer Berkeley
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
64-bit Perl on Tru64In Tru64 Perl's integers are automatically 64-bit wide, there is no need to use the Configure -Duse64bitint option as described in
Warnings about floating-point overflow when compiling Perl on Tru64When 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) return HUGE_VAL; -----------^
and when compiling the
cc: Warning: const-c.inc, line 2007: In this statement, floating-point overflow occurs in evaluating the expression "1.8e308". (floatoverfl) return HUGE_VAL; -------------------^
The exact line numbers may vary between Perl releases. The warnings are benign and can be ignored: in later C compiler releases the warnings should be gone.
When the file pp_sys.c is being compiled you may (depending on the operating system release) see an additional compiler flag being used: "-DNO_EFF_ONLY_OK". This is normal and refers to a feature that is relevant only if you use the "filetest" pragma. In older releases of the operating system the feature was broken and the
Testing Perl on Tru64During ``make test'' the "comp"/"cpp" will be skipped because on Tru64 it cannot be tested before Perl has been installed. The test refers to the use of the "-P" option of Perl.
ext/ODBM_File/odbm Test Failing With Static BuildsThe ext/ODBM_File/odbm is known to fail with static builds (Configure -Uusedl) due to a known bug in Tru64's static libdbm library. The good news is that you very probably don't need to ever use the ODBM_File extension since more advanced NDBM_File works fine, not to mention the even more advanced DB_File.
Perl Fails Because Of Unresolved Symbol sockatmarkIf you get an error like
Can't load '.../OSF1/lib/perl5/5.8.0/alpha-dec_osf/auto/IO/IO.so' for module IO: Unresolved symbol in .../lib/perl5/5.8.0/alpha-dec_osf/auto/IO/IO.so: sockatmark at .../lib/perl5/5.8.0/alpha-dec_osf/XSLoader.pm line 75.
you need to either recompile your Perl in Tru64 4.0D or upgrade your Tru64 4.0D to at least 4.0F: the sockatmark() system call was added in Tru64 4.0F, and the
read_cur_obj_info: bad file magic numberYou may be mixing the Tru64 cc/ar/ld with the
Try 'which ld' and 'which ld' (or try 'ar --version' and 'ld --version', which work only for the