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NAME

perlhpux - 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.

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.
Pre-installed HP-UX systems now 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/portal/swdepot/displayProductInfo.do?productNumber=PERL> for
both PA-RISC and IPF (Itanium Processor Family). They are built with the HP ANSI-C
compiler. Up till 5.8.8 that was done 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

To see what is installed on your system:

# swlist -R perl
# perl E.5.8.8.J Perl Programming Language
# perl.Perl5-32 E.5.8.8.J 32-bit Perl Programming Language with Extensions
perl.Perl5-32.PERL-MAN E.5.8.8.J 32-bit Perl Man Pages for IA
perl.Perl5-32.PERL-RUN E.5.8.8.J 32-bit Perl Binaries for IA
# perl.Perl5-64 E.5.8.8.J 64-bit Perl Programming Language with Extensions
perl.Perl5-64.PERL-MAN E.5.8.8.J 64-bit Perl Man Pages for IA
perl.Perl5-64.PERL-RUN E.5.8.8.J 64-bit Perl Binaries for IA

Using perl from HP's porting centre
HP porting centre tries to keep up with customer demand and release updates from the Open
Source community. Having precompiled Perl binaries available is obvious, though "up-to-
date" is something relative. At the moment of writing only perl-5.10.1 was available (with
5.16.3 being the latest stable release from the porters point of view).

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.

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.

Other prebuilt perl binaries
To get even more recent perl depots for the whole range of HP-UX, visit H.Merijn Brand's
site at <http://mirrors.develooper.com/hpux/#Perl>. Carefully read the notes to see if
the available versions suit your needs.

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 referred 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/faqs.html>

The last order date for HP 9000 systems was December 31, 2008.

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 referred 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, BL890c, cx2600, cx2620, rx1600, rx1620, rx2600,
rx2600hptc, rx2620, rx2660, rx2800, 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 End-of-factory support
------------- ------ ------------ ----------------------------------
10.20 32 bit PA 30-Jun-2003
11.00 32/64 PA 31-Dec-2006
11.11 11i v1 32/64 PA 31-Dec-2015
11.22 11i v2 64 IPF 30-Apr-2004
11.23 11i v2 64 PA & IPF 31-Dec-2015
11.31 11i v3 64 PA & IPF 31-Dec-2020 (PA) 31-Dec-2022 (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://gcc.gnu.org/mirrors.html>) or fetch a prebuilt binary from the HP porting center
at <http://hpux.connect.org.uk/hppd/cgi-bin/search?term=gcc&Search=Search> or from the
DSPP (you need to be a member) at
<http://h21007.www2.hp.com/portal/site/dspp/menuitem.863c3e4cbcdc3f3515b49c108973a801?ciid=2a08725cc2f02110725cc2f02110275d6e10RCRD&jumpid=reg_r1002_usen_c-001_title_r0001>
(Browse through the list, because there are often multiple versions of the same package
available).

Most 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 (only 32bit), HP-UX 11.00, HP-UX 11.11 (HP-UX 11i v1), and HP-UX 11.23
(HP-UX 11i v2 PA-RISC) in both 32- and 64-bit versions. For HP-UX 11.23 IPF and HP-UX
11.31 IPF depots are available too. The IPF versions do not need two versions of GNU gcc.

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/>). The use of
PTH will be unsupported in perl-5.12 and up and is rather buggy in 5.11.x.

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.

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.

error: pasting ")" and "l" does not give a valid preprocessing token

There seems to be a broken system header file in HP-UX 11.00 that breaks perl building in
32bit mode with GNU gcc-4.x causing this error. The same file for HP-UX 11.11 (even though
the file is older) does not show this failure, and has the correct definition, so the best
fix is to patch the header to match:

--- /usr/include/inttypes.h 2001-04-20 18:42:14 +0200
+++ /usr/include/inttypes.h 2000-11-14 09:00:00 +0200
@@ -72,7 +72,7 @@
#define UINT32_C(__c) __CONCAT_U__(__c)
#else /* __LP64 */
#define INT32_C(__c) __CONCAT__(__c,l)
-#define UINT32_C(__c) __CONCAT__(__CONCAT_U__(__c),l)
+#define UINT32_C(__c) __CONCAT__(__c,ul)
#endif /* __LP64 */

#define INT64_C(__c) __CONCAT_L__(__c,l)

Redeclaration of "sendpath" with a different storage class specifier

The following compilation warnings may happen in HP-UX releases earlier than 11.31 but are
harmless:

cc: "/usr/include/sys/socket.h", line 535: warning 562: Redeclaration of "sendfile" with a different storage class specifier: "sendfile" will have internal linkage.
cc: "/usr/include/sys/socket.h", line 536: warning 562: Redeclaration of "sendpath" with a different storage class specifier: "sendpath" will have internal linkage.

They seem to be caused by broken system header files, and also other open source projects
are seeing them. The following HP-UX patches should make the warnings go away:

CR JAGae12001: PHNE_27063
Warning 562 on sys/socket.h due to redeclaration of prototypes

CR JAGae16787:
Warning 562 from socket.h sendpath/sendfile -D_FILEFFSET_BITS=64

CR JAGae73470 (11.23)
ER: Compiling socket.h with cc -D_FILEFFSET_BITS=64 warning 267/562

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.

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