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NAME

       README.hpux - Perl version 5 on Hewlett-Packard Unix (HP-UX) systems

DESCRIPTION

       This document describes various features of HP’s Unix operating system
       (HP-UX) that will affect how Perl version 5 (hereafter just Perl) is
       compiled and/or runs.

   Using perl as shipped with HP-UX
       Application release September 2001, HP-UX 11.00 is the first to ship
       with Perl. By the time it was perl-5.6.1 in /opt/perl. The first
       occurrence is on CD 5012-7954 and can be installed using

         swinstall -s /cdrom perl

       assuming you have mounted that CD on /cdrom. In this version the
       following modules were installed:

         ActivePerl::DocTools-0.04   HTML::Parser-3.19   XML::DOM-1.25
         Archive::Tar-0.072          HTML::Tagset-3.03   XML::Parser-2.27
         Compress::Zlib-1.08         MIME::Base64-2.11   XML::Simple-1.05
         Convert::ASN1-0.10          Net-1.07            XML::XPath-1.09
         Digest::MD5-2.11            PPM-2.1.5           XML::XSLT-0.32
         File::CounterFile-0.12      SOAP::Lite-0.46     libwww-perl-5.51
         Font::AFM-1.18              Storable-1.011      libxml-perl-0.07
         HTML-Tree-3.11              URI-1.11            perl-ldap-0.23

       That build was a portable hppa-1.1 multithread build that supports
       large files compiled with gcc-2.9-hppa-991112.

       If you perform a new installation, then (a newer) Perl will be
       installed automatically.  Preinstalled HP-UX systems now slao have more
       recent versions of Perl and the updated modules.

       The official (threaded) builds from HP, as they are shipped on the
       Application DVD/CD’s are available on
       http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/displayProductInfo.pl?productNumber=PERL
       for both PA-RISC and IPF (Itanium Processor Family). They are built
       with the HP ANSI-C compiler by ActiveState.

       To see what version is included on the DVD (assumed here to be mounted
       on /cdrom), issue this command:

         # swlist -s /cdrom perl
         # perl           D.5.8.8.B  5.8.8 Perl Programming Language
           perl.Perl5-32  D.5.8.8.B  32-bit 5.8.8 Perl Programming Language with Extensions
           perl.Perl5-64  D.5.8.8.B  64-bit 5.8.8 Perl Programming Language with Extensions

   Using perl from HPs porting centre
       HP porting centre tries very hard to keep up with customer demand and
       release updates from the Open Source community. Having precompiled Perl
       binaries available is obvious.

       The HP porting centres are limited in what systems they are allowed to
       port to and they usually choose the two most recent OS versions
       available. This means that at the moment of writing, there are only HP-
       UX 11.11 (pa-risc 2.0) and HP-UX 11.23 (Itanium 2) ports available on
       the porting centres.

       HP has asked the porting centre to move Open Source binaries from /opt
       to /usr/local, so binaries produced since the start of July 2002 are
       located in /usr/local.

       One of HP porting centres URL’s is http://hpux.connect.org.uk/ The port
       currently available is built with GNU gcc.

   Compiling Perl 5 on HP-UX
       When compiling Perl, you must use an ANSI C compiler.  The C compiler
       that ships with all HP-UX systems is a K&R compiler that should only be
       used to build new kernels.

       Perl can be compiled with either HP’s ANSI C compiler or with gcc.  The
       former is recommended, as not only can it compile Perl with no
       difficulty, but also can take advantage of features listed later that
       require the use of HP compiler-specific command-line flags.

       If you decide to use gcc, make sure your installation is recent and
       complete, and be sure to read the Perl INSTALL file for more gcc-
       specific details.

   PA-RISC
       HP’s HP9000 Unix systems run on HP’s own Precision Architecture (PA-
       RISC) chip.  HP-UX used to run on the Motorola MC68000 family of chips,
       but any machine with this chip in it is quite obsolete and this
       document will not attempt to address issues for compiling Perl on the
       Motorola chipset.

       The version of PA-RISC at the time of this document’s last update is
       2.0, which is also the last there will be. HP PA-RISC systems are
       usually refered to with model description "HP 9000". The last CPU in
       this series is the PA-8900.  Support for PA-RISC architectured machines
       officially ends as shown in the following table:

          PA-RISC End-of-Life Roadmap
        +--------+----------------+----------------+-----------------+
        | HP9000 | Superdome      | PA-8700        | Spring 2011     |
        | 4-128  |                | PA-8800/sx1000 | Summer 2012     |
        | cores  |                | PA-8900/sx1000 | 2014            |
        |        |                | PA-8900/sx2000 | 2015            |
        +--------+----------------+----------------+-----------------+
        | HP9000 | rp7410, rp8400 | PA-8700        | Spring 2011     |
        | 2-32   | rp7420, rp8420 | PA-8800/sx1000 | 2012            |
        | cores  | rp7440, rp8440 | PA-8900/sx1000 | Autumn 2013     |
        |        |                | PA-8900/sx2000 | 2015            |
        +--------+----------------+----------------+-----------------+
        | HP9000 | rp44x0         | PA-8700        | Spring 2011     |
        | 1-8    |                | PA-8800/rp44x0 | 2012            |
        | cores  |                | PA-8900/rp44x0 | 2014            |
        +--------+----------------+----------------+-----------------+
        | HP9000 | rp34x0         | PA-8700        | Spring 2011     |
        | 1-4    |                | PA-8800/rp34x0 | 2012            |
        | cores  |                | PA-8900/rp34x0 | 2014            |
        +--------+----------------+----------------+-----------------+

       From http://www.hp.com/products1/evolution/9000/eol_announcement.html:

        The last order date for HP9000 PA-RISC systems is planned for
        December 31, 2008 and ship date of April 1, 2009. Operating system
        releases for HP-UX will continue shipping past the HP9000 systems
        last order date.

       A complete list of models at the time the OS was built is in the file
       /usr/sam/lib/mo/sched.models. The first column corresponds to the last
       part of the output of the "model" command.  The second column is the
       PA-RISC version and the third column is the exact chip type used.
       (Start browsing at the bottom to prevent confusion ;-)

         # model
         9000/800/L1000-44
         # grep L1000-44 /usr/sam/lib/mo/sched.models
         L1000-44        2.0     PA8500

   Portability Between PA-RISC Versions
       An executable compiled on a PA-RISC 2.0 platform will not execute on a
       PA-RISC 1.1 platform, even if they are running the same version of HP-
       UX.  If you are building Perl on a PA-RISC 2.0 platform and want that
       Perl to also run on a PA-RISC 1.1, the compiler flags +DAportable and
       +DS32 should be used.

       It is no longer possible to compile PA-RISC 1.0 executables on either
       the PA-RISC 1.1 or 2.0 platforms.  The command-line flags are accepted,
       but the resulting executable will not run when transferred to a PA-RISC
       1.0 system.

   PA-RISC 1.0
       The original version of PA-RISC, HP no longer sells any system with
       this chip.

       The following systems contained PA-RISC 1.0 chips:

         600, 635, 645, 808, 815, 822, 825, 832, 834, 835, 840, 842, 845, 850,
         852, 855, 860, 865, 870, 890

   PA-RISC 1.1
       An upgrade to the PA-RISC design, it shipped for many years in many
       different system.

       The following systems contain with PA-RISC 1.1 chips:

         705, 710, 712, 715, 720, 722, 725, 728, 730, 735, 742, 743, 744, 745,
         747, 750, 755, 770, 777, 778, 779, 800, 801, 803, 806, 807, 809, 811,
         813, 816, 817, 819, 821, 826, 827, 829, 831, 837, 839, 841, 847, 849,
         851, 856, 857, 859, 867, 869, 877, 887, 891, 892, 897, A180, A180C,
         B115, B120, B132L, B132L+, B160L, B180L, C100, C110, C115, C120,
         C160L, D200, D210, D220, D230, D250, D260, D310, D320, D330, D350,
         D360, D410, DX0, DX5, DXO, E25, E35, E45, E55, F10, F20, F30, G30,
         G40, G50, G60, G70, H20, H30, H40, H50, H60, H70, I30, I40, I50, I60,
         I70, J200, J210, J210XC, K100, K200, K210, K220, K230, K400, K410,
         K420, S700i, S715, S744, S760, T500, T520

   PA-RISC 2.0
       The most recent upgrade to the PA-RISC design, it added support for
       64-bit integer data.

       As of the date of this document’s last update, the following systems
       contain PA-RISC 2.0 chips:

         700, 780, 781, 782, 783, 785, 802, 804, 810, 820, 861, 871, 879, 889,
         893, 895, 896, 898, 899, A400, A500, B1000, B2000, C130, C140, C160,
         C180, C180+, C180-XP, C200+, C400+, C3000, C360, C3600, CB260, D270,
         D280, D370, D380, D390, D650, J220, J2240, J280, J282, J400, J410,
         J5000, J5500XM, J5600, J7000, J7600, K250, K260, K260-EG, K270, K360,
         K370, K380, K450, K460, K460-EG, K460-XP, K470, K570, K580, L1000,
         L2000, L3000, N4000, R380, R390, SD16000, SD32000, SD64000, T540,
         T600, V2000, V2200, V2250, V2500, V2600

       Just before HP took over Compaq, some systems were renamed. the link
       that contained the explanation is dead, so here’s a short summary:

         HP 9000 A-Class servers, now renamed HP Server rp2400 series.
         HP 9000 L-Class servers, now renamed HP Server rp5400 series.
         HP 9000 N-Class servers, now renamed HP Server rp7400.

         rp2400, rp2405, rp2430, rp2450, rp2470, rp3410, rp3440, rp4410,
         rp4440, rp5400, rp5405, rp5430, rp5450, rp5470, rp7400, rp7405,
         rp7410, rp7420, rp7440, rp8400, rp8420, rp8440, Superdome

       The current naming convention is:

         aadddd
         ||||`+- 00 - 99 relative capacity & newness (upgrades, etc.)
         |||`--- unique number for each architecture to ensure different
         |||     systems do not have the same numbering across
         |||     architectures
         ||`---- 1 - 9 identifies family and/or relative positioning
         ||
         |`----- c = ia32 (cisc)
         |       p = pa-risc
         |       x = ia-64 (Itanium & Itanium 2)
         |       h = housing
         `------ t = tower
                 r = rack optimized
                 s = super scalable
                 b = blade
                 sa = appliance

   Itanium Processor Family (IPF) and HP-UX
       HP-UX also runs on the new Itanium processor.  This requires the use of
       a different version of HP-UX (currently 11.23 or 11i v2), and with the
       exception of a few differences detailed below and in later sections,
       Perl should compile with no problems.

       Although PA-RISC binaries can run on Itanium systems, you should not
       attempt to use a PA-RISC version of Perl on an Itanium system.  This is
       because shared libraries created on an Itanium system cannot be loaded
       while running a PA-RISC executable.

       HP Itanium 2 systems are usually refered to with model description "HP
       Integrity".

   Itanium, Itanium 2 & Madison 6
       HP also ships servers with the 128-bit Itanium processor(s). The cx26x0
       is told to have Madison 6. As of the date of this document’s last
       update, the following systems contain Itanium or Itanium 2 chips (this
       is likely to be out of date):

         BL60p, BL860c, BL870c, cx2600, cx2620, rx1600, rx1620, rx2600,
         rx2600hptc, rx2620, rx2660, rx3600, rx4610, rx4640, rx5670,
         rx6600, rx7420, rx7620, rx7640, rx8420, rx8620, rx8640, rx9610,
         sx1000, sx2000

       To see all about your machine, type

         # model
         ia64 hp server rx2600
         # /usr/contrib/bin/machinfo

   HP-UX versions
       Not all architectures (PA = PA-RISC, IPF = Itanium Processor Family)
       support all versions of HP-UX, here is a short list

         HP-UX version  Kernel  Architecture
         -------------  ------  ------------
         10.20          32 bit  PA
         11.00          32/64   PA
         11.11  11i v1  32/64   PA
         11.22  11i v2     64        IPF
         11.23  11i v2     64   PA & IPF
         11.31  11i v3     64   PA & IPF

       See for the full list of hardware/OS support and expected end-of-life
       http://www.hp.com/go/hpuxservermatrix

   Building Dynamic Extensions on HP-UX
       HP-UX supports dynamically loadable libraries (shared libraries).
       Shared libraries end with the suffix .sl.  On Itanium systems, they end
       with the suffix .so.

       Shared libraries created on a platform using a particular PA-RISC
       version are not usable on platforms using an earlier PA-RISC version by
       default.  However, this backwards compatibility may be enabled using
       the same +DAportable compiler flag (with the same PA-RISC 1.0 caveat
       mentioned above).

       Shared libraries created on an Itanium platform cannot be loaded on a
       PA-RISC platform.  Shared libraries created on a PA-RISC platform can
       only be loaded on an Itanium platform if it is a PA-RISC executable
       that is attempting to load the PA-RISC library.  A PA-RISC shared
       library cannot be loaded into an Itanium executable nor vice-versa.

       To create a shared library, the following steps must be performed:

         1. Compile source modules with +z or +Z flag to create a .o module
            which contains Position-Independent Code (PIC).  The linker will
            tell you in the next step if +Z was needed.
            (For gcc, the appropriate flag is -fpic or -fPIC.)

         2. Link the shared library using the -b flag.  If the code calls
            any functions in other system libraries (e.g., libm), it must
            be included on this line.

       (Note that these steps are usually handled automatically by the
       extension’s Makefile).

       If these dependent libraries are not listed at shared library creation
       time, you will get fatal "Unresolved symbol" errors at run time when
       the library is loaded.

       You may create a shared library that refers to another library, which
       may be either an archive library or a shared library.  If this second
       library is a shared library, this is called a "dependent library".  The
       dependent library’s name is recorded in the main shared library, but it
       is not linked into the shared library.  Instead, it is loaded when the
       main shared library is loaded.  This can cause problems if you build an
       extension on one system and move it to another system where the
       libraries may not be located in the same place as on the first system.

       If the referred library is an archive library, then it is treated as a
       simple collection of .o modules (all of which must contain PIC).  These
       modules are then linked into the shared library.

       Note that it is okay to create a library which contains a dependent
       library that is already linked into perl.

       Some extensions, like DB_File and Compress::Zlib use/require prebuilt
       libraries for the perl extensions/modules to work. If these libraries
       are built using the default configuration, it might happen that you run
       into an error like "invalid loader fixup" during load phase.  HP is
       aware of this problem.  Search the HP-UX cxx-dev forums for discussions
       about the subject.  The short answer is that everything (all libraries,
       everything) must be compiled with "+z" or "+Z" to be PIC (position
       independent code).  (For gcc, that would be "-fpic" or "-fPIC").  In
       HP-UX 11.00 or newer the linker error message should tell the name of
       the offending object file.

       A more general approach is to intervene manually, as with an example
       for the DB_File module, which requires SleepyCat’s libdb.sl:

         # cd .../db-3.2.9/build_unix
         # vi Makefile
         ... add +Z to all cflags to create shared objects
         CFLAGS=         -c $(CPPFLAGS) +Z -Ae +O2 +Onolimit \
                         -I/usr/local/include -I/usr/include/X11R6
         CXXFLAGS=       -c $(CPPFLAGS) +Z -Ae +O2 +Onolimit \
                         -I/usr/local/include -I/usr/include/X11R6

         # make clean
         # make
         # mkdir tmp
         # cd tmp
         # ar x ../libdb.a
         # ld -b -o libdb-3.2.sl *.o
         # mv libdb-3.2.sl /usr/local/lib
         # rm *.o
         # cd /usr/local/lib
         # rm -f libdb.sl
         # ln -s libdb-3.2.sl libdb.sl

         # cd .../DB_File-1.76
         # make distclean
         # perl Makefile.PL
         # make
         # make test
         # make install

       As of db-4.2.x it is no longer needed to do this by hand. Sleepycat has
       changed the configuration process to add +z on HP-UX automatically.

         # cd .../db-4.2.25/build_unix
         # env CFLAGS=+DD64 LDFLAGS=+DD64 ../dist/configure

       should work to generate 64bit shared libraries for HP-UX 11.00 and 11i.

       It is no longer possible to link PA-RISC 1.0 shared libraries (even
       though the command-line flags are still present).

       PA-RISC and Itanium object files are not interchangeable.  Although you
       may be able to use ar to create an archive library of PA-RISC object
       files on an Itanium system, you cannot link against it using an Itanium
       link editor.

   The HP ANSI C Compiler
       When using this compiler to build Perl, you should make sure that the
       flag -Aa is added to the cpprun and cppstdin variables in the config.sh
       file (though see the section on 64-bit perl below). If you are using a
       recent version of the Perl distribution, these flags are set
       automatically.

       Even though HP-UX 10.20 and 11.00 are not actively maintained by HP
       anymore, updates for the HP ANSI C compiler are still available from
       time to time, and it might be advisable to see if updates are
       applicable.  At the moment of writing, the latests available patches
       for 11.00 that should be applied are PHSS_35098, PHSS_35175,
       PHSS_35100, PHSS_33036, and PHSS_33902). If you have a SUM account, you
       can use it to search for updates/patches. Enter "ANSI" as keyword.

   The GNU C Compiler
       When you are going to use the GNU C compiler (gcc), and you don’t have
       gcc yet, you can either build it yourself from the sources (available
       from e.g. http://www.gnu.ai.mit.edu/software/gcc/releases.html) or
       fetch a prebuilt binary from the HP porting center. There are two
       places where gcc prebuilds can be fetched; the first and best (for HP-
       UX 11 only) is
       http://h21007.www2.hp.com/dspp/tech/tech_TechSoftwareDetailPage_IDX/1,1703,547,00.html
       the second is http://hpux.cs.utah.edu/hppd/hpux/Gnu/ where you can also
       find the GNU binutils package. (Browse through the list, because there
       are often multiple versions of the same package available).

       Above mentioned distributions are depots. H.Merijn Brand has made
       prebuilt gcc binaries available on http://mirrors.develooper.com/hpux/
       and/or http://www.cmve.net/~merijn/ for HP-UX 10.20, HP-UX 11.00, HP-UX
       11.11 (HP-UX 11i v1), and HP-UX 11.23 (HP-UX 11i v2) in both 32- and
       64-bit versions. These are bzipped tar archives that also include
       recent GNU binutils and GNU gdb.  Read the instructions on that page to
       rebuild gcc using itself.

       On PA-RISC you need a different compiler for 32-bit applications and
       for 64-bit applications. On PA-RISC, 32-bit objects and 64-bit objects
       do not mix. Period. There is no different behaviour for HP C-ANSI-C or
       GNU gcc. So if you require your perl binary to use 64-bit libraries,
       like Oracle-64bit, you MUST build a 64-bit perl.

       Building a 64-bit capable gcc on PA-RISC from source is possible only
       when you have the HP C-ANSI C compiler or an already working 64-bit
       binary of gcc available. Best performance for perl is achieved with
       HP’s native compiler.

   Using Large Files with Perl on HP-UX
       Beginning with HP-UX version 10.20, files larger than 2GB (2^31 bytes)
       may be created and manipulated.  Three separate methods of doing this
       are available.  Of these methods, the best method for Perl is to
       compile using the -Duselargefiles flag to Configure.  This causes Perl
       to be compiled using structures and functions in which these are 64
       bits wide, rather than 32 bits wide.  (Note that this will only work
       with HP’s ANSI C compiler.  If you want to compile Perl using gcc, you
       will have to get a version of the compiler that supports 64-bit
       operations. See above for where to find it.)

       There are some drawbacks to this approach.  One is that any extension
       which calls any file-manipulating C function will need to be recompiled
       (just follow the usual "perl Makefile.PL; make; make test; make
       install" procedure).

       The list of functions that will need to recompiled is:
         creat,          fgetpos,        fopen,
         freopen,        fsetpos,        fstat,
         fstatvfs,       fstatvfsdev,    ftruncate,
         ftw,            lockf,          lseek,
         lstat,          mmap,           nftw,
         open,           prealloc,       stat,
         statvfs,        statvfsdev,     tmpfile,
         truncate,       getrlimit,      setrlimit

       Another drawback is only valid for Perl versions before 5.6.0.  This
       drawback is that the seek and tell functions (both the builtin version
       and POSIX module version) will not perform correctly.

       It is strongly recommended that you use this flag when you run
       Configure.  If you do not do this, but later answer the question about
       large files when Configure asks you, you may get a configuration that
       cannot be compiled, or that does not function as expected.

   Threaded Perl on HP-UX
       It is possible to compile a version of threaded Perl on any version of
       HP-UX before 10.30, but it is strongly suggested that you be running on
       HP-UX 11.00 at least.

       To compile Perl with threads, add -Dusethreads to the arguments of
       Configure.  Verify that the -D_POSIX_C_SOURCE=199506L compiler flag is
       automatically added to the list of flags.  Also make sure that
       -lpthread is listed before -lc in the list of libraries to link Perl
       with. The hints provided for HP-UX during Configure will try very hard
       to get this right for you.

       HP-UX versions before 10.30 require a separate installation of a POSIX
       threads library package. Two examples are the HP DCE package, available
       on "HP-UX Hardware Extensions 3.0, Install and Core OS, Release 10.20,
       April 1999 (B3920-13941)" or the Freely available PTH package,
       available on H.Merijn’s site (http://mirrors.develooper.com/hpux/).

       If you are going to use the HP DCE package, the library used for
       threading is /usr/lib/libcma.sl, but there have been multiple updates
       of that library over time. Perl will build with the first version, but
       it will not pass the test suite. Older Oracle versions might be a
       compelling reason not to update that library, otherwise please find a
       newer version in one of the following patches: PHSS_19739, PHSS_20608,
       or PHSS_23672

       reformatted output:

         d3:/usr/lib 106 > what libcma-*.1
         libcma-00000.1:
            HP DCE/9000 1.5               Module: libcma.sl (Export)
                                          Date: Apr 29 1996 22:11:24
         libcma-19739.1:
            HP DCE/9000 1.5 PHSS_19739-40 Module: libcma.sl (Export)
                                          Date: Sep  4 1999 01:59:07
         libcma-20608.1:
            HP DCE/9000 1.5 PHSS_20608    Module: libcma.1 (Export)
                                          Date: Dec  8 1999 18:41:23
         libcma-23672.1:
            HP DCE/9000 1.5 PHSS_23672    Module: libcma.1 (Export)
                                          Date: Apr  9 2001 10:01:06
         d3:/usr/lib 107 >

       If you choose for the PTH package, use swinstall to install pth in the
       default location (/opt/pth), and then make symbolic links to the
       libraries from /usr/lib

         # cd /usr/lib
         # ln -s /opt/pth/lib/libpth* .

       For building perl to support Oracle, it needs to be linked with libcl
       and libpthread. So even if your perl is an unthreaded build, these
       libraries might be required. See "Oracle on HP-UX" below.

   64-bit Perl on HP-UX
       Beginning with HP-UX 11.00, programs compiled under HP-UX can take
       advantage of the LP64 programming environment (LP64 means Longs and
       Pointers are 64 bits wide), in which scalar variables will be able to
       hold numbers larger than 2^32 with complete precision.  Perl has proven
       to be consistent and reliable in 64bit mode since 5.8.1 on all HP-UX
       11.xx.

       As of the date of this document, Perl is fully 64-bit compliant on HP-
       UX 11.00 and up for both cc- and gcc builds. If you are about to build
       a 64-bit perl with GNU gcc, please read the gcc section carefully.

       Should a user have the need for compiling Perl in the LP64 environment,
       use the -Duse64bitall flag to Configure.  This will force Perl to be
       compiled in a pure LP64 environment (with the +DD64 flag for HP C-ANSI-
       C, with no additional options for GNU gcc 64-bit on PA-RISC, and with
       -mlp64 for GNU gcc on Itanium).  If you want to compile Perl using gcc,
       you will have to get a version of the compiler that supports 64-bit
       operations.)

       You can also use the -Duse64bitint flag to Configure.  Although there
       are some minor differences between compiling Perl with this flag versus
       the -Duse64bitall flag, they should not be noticeable from a Perl
       user’s perspective. When configuring -Duse64bitint using a 64bit gcc on
       a pa-risc architecture, -Duse64bitint is silently promoted to
       -Duse64bitall.

       In both cases, it is strongly recommended that you use these flags when
       you run Configure.  If you do not use do this, but later answer the
       questions about 64-bit numbers when Configure asks you, you may get a
       configuration that cannot be compiled, or that does not function as
       expected.

   Oracle on HP-UX
       Using perl to connect to Oracle databases through DBI and DBD::Oracle
       has caused a lot of people many headaches. Read README.hpux in the
       DBD::Oracle for much more information. The reason to mention it here is
       that Oracle requires a perl built with libcl and libpthread, the latter
       even when perl is build without threads. Building perl using all
       defaults, but still enabling to build DBD::Oracle later on can be
       achieved using

         Configure -A prepend:libswanted='cl pthread ' ...

       Do not forget the space before the trailing quote.

       Also note that this does not (yet) work with all configurations, it is
       known to fail with 64-bit versions of GCC.

   GDBM and Threads on HP-UX
       If you attempt to compile Perl with (POSIX) threads on an 11.X system
       and also link in the GDBM library, then Perl will immediately core dump
       when it starts up.  The only workaround at this point is to relink the
       GDBM library under 11.X, then relink it into Perl.

       the error might show something like:

       Pthread internal error: message: __libc_reinit() failed, file:
       ../pthreads/pthread.c, line: 1096 Return Pointer is 0xc082bf33 sh: 5345
       Quit(coredump)

       and Configure will give up.

   NFS filesystems and utime(2) on HP-UX
       If you are compiling Perl on a remotely-mounted NFS filesystem, the
       test io/fs.t may fail on test #18.  This appears to be a bug in HP-UX
       and no fix is currently available.

   perl -P and // and HP-UX
       If HP-UX Perl is compiled with flags that will cause problems if the -P
       flag of Perl (preprocess Perl code with the C preprocessor before perl
       sees it) is used.  The problem is that "//", being a C++-style until-
       end-of-line comment, will disappear along with the remainder of the
       line.  This means that common Perl constructs like

         s/foo//;

       will turn into illegal code

         s/foo

       The workaround is to use some other quoting separator than "/", like
       for example "!":

         s!foo!!;

   HP-UX Kernel Parameters (maxdsiz) for Compiling Perl
       By default, HP-UX comes configured with a maximum data segment size of
       64MB.  This is too small to correctly compile Perl with the maximum
       optimization levels.  You can increase the size of the maxdsiz kernel
       parameter through the use of SAM.

       When using the GUI version of SAM, click on the Kernel Configuration
       icon, then the Configurable Parameters icon.  Scroll down and select
       the maxdsiz line.  From the Actions menu, select the Modify
       Configurable Parameter item.  Insert the new formula into the
       Formula/Value box.  Then follow the instructions to rebuild your kernel
       and reboot your system.

       In general, a value of 256MB (or "256*1024*1024") is sufficient for
       Perl to compile at maximum optimization.

nss_delete core dump from op/pwent or op/grent

       You may get a bus error core dump from the op/pwent or op/grent tests.
       If compiled with -g you will see a stack trace much like the following:

         #0  0xc004216c in  () from /usr/lib/libc.2
         #1  0xc00d7550 in __nss_src_state_destr () from /usr/lib/libc.2
         #2  0xc00d7768 in __nss_src_state_destr () from /usr/lib/libc.2
         #3  0xc00d78a8 in nss_delete () from /usr/lib/libc.2
         #4  0xc01126d8 in endpwent () from /usr/lib/libc.2
         #5  0xd1950 in Perl_pp_epwent () from ./perl
         #6  0x94d3c in Perl_runops_standard () from ./perl
         #7  0x23728 in S_run_body () from ./perl
         #8  0x23428 in perl_run () from ./perl
         #9  0x2005c in main () from ./perl

       The key here is the "nss_delete" call.  One workaround for this bug
       seems to be to create add to the file /etc/nsswitch.conf (at least) the
       following lines

         group: files
         passwd: files

       Whether you are using NIS does not matter.  Amazingly enough, the same
       bug also affects Solaris.

Miscellaneous

       HP-UX 11 Y2K patch "Y2K-1100 B.11.00.B0125 HP-UX Core OS Year 2000
       Patch Bundle" has been reported to break the io/fs test #18 which tests
       whether utime() can change timestamps.  The Y2K patch seems to break
       utime() so that over NFS the timestamps do not get changed (on local
       filesystems utime() still works). This has probably been fixed on your
       system by now.

AUTHOR

       H.Merijn Brand <h.m.brand@xs4all.nl> Jeff Okamoto <okamoto@corp.hp.com>

       With much assistance regarding shared libraries from Marc Sabatella.

DATE

       Version 0.8.3: 2008-06-24