Building and Installing SANE on HP-UX
-------------------------------------

Time-stamp: <2001-10-03T16:41:13 mxp>

This file contains some notes on building and installing SANE on
HP-UX.  It tells you which compiler switches to use, how to find out
to which controller card your scanner is connected, and how to create
a device file for it.

Building SANE
-------------

On HP-UX, SANE can be built using either the HP ANSI C compiler or
GCC.  For GCC, no special arguments to configure are necessary.  For
the HP compiler, invoke configure like this:

  CC=cc CFLAGS="-Ae -O" ./configure

If you're using the HP compiler on 64-bit HP-UX 11, you must build
64-bit executables:

  CC=cc CFLAGS="-Ae +DA2.0W -O" ./configure

Some of the make files use GNU extensions, so you have to use gmake
(GNU make).  Gmake binaries are available from the HP-UX Porting and
Archive Centre <http://hpux.connect.org.uk> and its mirror sites.

Installing SANE
---------------

The SCSI pass-through driver (sctl) must be enabled in your kernel,
but it is by default.

Naturally, the scanner must have a non-conflicting SCSI address and it
must be connected to the right SCSI bus to work.

You'll probably need to create a device file for your scanner.  To do
this, you'll need to know its SCSI address, and, if your machine has
multiple SCSI controllers, the number of the one it's connected to.
As root, you can use ioscan -f to find this information.

For example, here's the partial ioscan output for a C200:

Class       I  H/W Path      Driver      S/W State   H/W Type     Description
==============================================================================
[...]
ext_bus     0  8/0/19/0      c720        CLAIMED     INTERFACE    Ultra Wide SCSI
target      0  8/0/19/0.6    tgt         CLAIMED     DEVICE       
disk        0  8/0/19/0.6.0  sdisk       CLAIMED     DEVICE       IBM     DDYS-T09170N
target      1  8/0/19/0.7    tgt         CLAIMED     DEVICE       
ctl         0  8/0/19/0.7.0  sctl        CLAIMED     DEVICE       Initiator
[...]
ext_bus     1  8/16/5        c720        CLAIMED     INTERFACE    Built-in SCSI
target      4  8/16/5.1      tgt         CLAIMED     DEVICE       
unknown    -1  8/16/5.1.0                UNCLAIMED   UNKNOWN      EPSON   Perfection1640
target      2  8/16/5.2      tgt         CLAIMED     DEVICE       
disk        1  8/16/5.2.0    sdisk       CLAIMED     DEVICE       TOSHIBA CD-ROM XM-5401TA
target      3  8/16/5.7      tgt         CLAIMED     DEVICE       
ctl         1  8/16/5.7.0    sctl        CLAIMED     DEVICE       Initiator
[...]

You can see that there are two SCSI controllers, Ultra Wide SCSI and
Built-in SCSI (narrow single-ended).  The I column shows the number of
the controller card.  Our scanner, an Epson Perfection 1640, is
connected to controller 1, and has SCSI address 1 (that's the 1 in the
H/W Path number).

You can now create the device file using mknod(1M).  In this example,
the command would be:

  mknod /dev/rscsi/c1t1d0 c 203 0x011000

In the filename, c1 specifies controller 1, t1 is target 1 (i.e., the
SCSI address), d0 (device 0) because it's the only device at that
address.  203 is the major number of the sctl driver.  In the minor
number (0x011000), 01 again means controller 1, and the second one
means SCSI address 1.  See scsi_ctl(7) for details.

For ease of use with SANE, I'd recommend to create a link to
/dev/scanner, e.g.,

  ln -s /dev/rscsi/c1t1d0 /dev/scanner

To allow normal users to access the scanner, the best approach is
probably to create a new group, say, "scanner", and make the scanner
device file readable and writable for the group, e.g.,

  chown bin:scanner /dev/rscsi/c1t1d0
  chmod g+rw /dev/rscsi/c1t1d0

You would then add all users that are allowed to use the scanner to
that group.  If you haven't already done so, you should do

  ln -s /etc/group /etc/logingroup

so that users are automatically in all groups to which they belong
(and don't have to use newgrp(1)).
