File: README.hpux

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		I M P O R T A N T

On HP-UX-11.x the maximal data size (allocated data) of a 32 bit program is
64 MB.

One solution is to build a 64 bit binary, for those the default process memory
limit is 1 GB.

64bit binaries can be created with

	cc +DA2.0w
	cc +DD64

if you have the HP C-ANSI-C compiler.

To compile in 64 bit mode, first call ./.clean then call

	make COPTX=+DD64 LDOPTX=+DD64 
	make COPTX=+DD64 LDOPTX=+DD64  install


If you have an older GNU gcc, you need a 64bit compiled gcc. Older GNU gcc versions
are not capable of switching, so you need a separate compiler installation for either:

l1:/u/usr/merijn 102 > file /usr/local/pa*/bin/gcc
/usr/local/pa20_32/bin/gcc:     PA-RISC2.0 shared executable dynamically linked -not stripped
/usr/local/pa20_64/bin/gcc:     ELF-64 executable object file - PA-RISC 2.0 (LP64)
l1:/u/usr/merijn 103 >

With a newer GCC, you may call ./.clean then call:

	make COPTX=-mlp64 LDOPTX=-mlp64
	make COPTX=-mlp64 LDOPTX=-mlp64  install


The other way is to alter some kernel parameters which require a reboot.
The default kernel parameter seem to look like:

Kernel param.               Value
maxdsiz                  67108864
maxdsiz_64bit          1073741824
maxfiles                      200
maxfiles_lim                 2048
maxssiz                   8388608
maxssiz_64bit             8388608
maxswapchunks                3250
maxtsiz                  67108864
maxtsiz_64bit          1073741824

The important one is maxdsiz, 64 MB is the default and it is rather low.
There is some information page at http://www.uwsg.iu.edu/hp/hpux-tune.html#maxdsiz 
and they recommend to increase it to 1.9 GB. Sounds extreme.

At http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x08afe7613948d5118fef0090279cd0f9,00.html 
they recommend 500 MB.

maxssiz shouldn't be a problem either since it has to do with swap and such as 
storing arrays and recursion etc.

If you like to know how to create 64 bit binaries on Solaris, please
read README.compile. I hope this helps. If you found the right way for HP-UX,
please send me a mail.



The Schily makefile system usually should be able to find the best C-compiler
on HP-UX automatically. If it does not work, here is a way force to use a different
compiler.


You may compile with the HP ANSI C-Compiler using:

	make CCOM=cc

To compile with the free K&R C-compiler call:

	gmake CCOM=cc 'COPTS= ' 
or
	smake CCOM=cc 'COPTS= ' 
/*--------------------------------------------------------------------------*/

HP-UX SCSI hints:

Note that there are no device nodes for userland SCSI on HP-UX,
you have to call the included shell script MKNOD.hpux first.

If you own a HP-9000-800 series machine, you need to install
the file MKNOD.hpux-800 in the /etc init shell script directory 
in order to call it after each boot.

This script will create the files in /dev/scsi/... and /dev/rscsi/...
The permissions will be set to read/write for root only.


HP does not handle CD-ROMs as well as it should. On the HP have a look at
the man pages for
    pfs
    pfsd
    pfs_mount
and anymore that they refer too.

/*--------------------------------------------------------------------------*/

From:
H.Merijn Brand        Amsterdam Perl Mongers (http://amsterdam.pm.org/)

As of Jun 2002, there are some patches available to HP-UX 11.00 and 11i that
prevent the need for pfs, and these are highly recommended, since Rock-Ridge
extensions are now supported from the kernel level.

For 11.00:

a5:/ 103 # swlist | grep -i rock
  PHCO_26449   1.0  Add Rock Ridge extension to mount_cdfs(1M)
  PHKL_26448   1.0  Y2k; Rock Ridge extension for ISO-9660
  PHKL_26450   1.0  Rock Ridge extension for ISO-9660
a5:/ 104 #

PHKL_26448 is not recommended, but I never had any trouble with it. I still
have to install PHKL_28060 over PHKL_26448

  PHKL_28060   1.0  Y2k; Rock Ridge extension for ISO-9660

For 11i:

  PHKL_28025   1.0  Rock Ridge extension for ISO-9660 
  PHKL_26269   1.0  Rock Ridge extension for ISO-9660 
  PHCO_25841   1.0  Add Rock Ridge extension to mount_cdfs(1M) 

I don't have 11i (yet), so I got this from HP-UX' patch database.

The problem is that they did /not/ enable RR by default, but made it a mount
option. D'uh! But you can add it in /etc/fstab, and never worry again :)

a5:/ 104 # grep cd /etc/fstab
/dev/cd0        /cdrom          cdfs    ro,rr,noauto    0 0
a5:/ 105 #