[sane-devel] libusb not available
Pim van Tend
pimvantend at yahoo.com
Tue Mar 26 13:44:56 GMT 2019
It works. I had no clue about the package pkg-config. One step closer now to a backend for the canoscan lide 70.
pimvantend
https://gitlab.com/pimvantend/canoscan-lide-70
--------------------------------------------
On Sat, 3/23/19, Olaf Meeuwissen <paddy-hack at member.fsf.org> wrote:
Subject: Re: [sane-devel] libusb not available
To: "Pim van Tend" <pimvantend at yahoo.com>
Cc: sane-devel at alioth-lists.debian.net
Date: Saturday, March 23, 2019, 12:08 PM
Hi Pim,
I'm doing a "educated guess" that
you are on Ubuntu 18.04. If that's
wrong, all bets are off.
Pim van Tend writes:
> When I run sudo sane-findscanner -vv from
the ubuntu-sane-package, I get:
> ...
> checking /dev/usbscanner15... failed to
open (Invalid argument)
#
Curious device location.
> found USB scanner (vendor=0x04a9 [Canon],
product=0x2225 [CanoScan]) at libusb:001:003
> # Your USB scanner was (probably)
detected. It may or may not be supported by
> # SANE. Try scanimage -L and read the
backend's manpage.
>
> # Not checking for parallel port
scanners.
So that seems to
have gone as expected.
>
When I run the same with a self-maked sane, I get:
> ...
> checking
/dev/usbscanner15... failed to open (Invalid argument)
> libusb not available
No clue as to why that happens. That library
should be somewhere in
your ld.so load
path(s), based on the list of installed usb related
packages you list a bit below.
> # No USB scanners
found. If you expected something different, make sure
that
Yet this didn't
quite go as expected.
>
In fact there are many libusb-packages installed:
> libusb-0.1-4/bionic,now 2:0.1.12-31 amd64
[installed]
> libusb-1.0-0/bionic,now
2:1.0.21-2 amd64 [installed]
>
libusb-1.0-0-dev/bionic,now 2:1.0.21-2 amd64 [installed]
> libusb-1.0-doc/bionic,bionic,now
2:1.0.21-2 all [installed]
>
libusb-dev/bionic,now 2:0.1.12-31 amd64 [installed]
> libusbmuxd4/bionic,now
1.1.0~git20171206.c724e70f-0.1 amd64 [installed]
> python-libusb1/bionic,bionic,now 1.6.3-1
all [installed]
Development
packages for libusb-1 and libusb (libusb-0) are present.
Good.
> With libusb-dev
removed, you do not get this far. Keeping or removing
> libusb-1.0-0-dev makes no difference.
Weird! But ...
> Part of the output op
./configure:
> checking for SYSTEMD...
no
> checking for USB... no
> checking for USB... no
No? Do you have pkg-config installed?
Doesn't look like it.
> checking usb.h usability... yes
> checking usb.h presence... yes
> checking for usb.h... yes
> checking for usb_interrupt_read in
-lusb... yes
So
`./configure` thinks it detected a 10+ years old libusb (or
Windows
version of usb ;-/)
> checking lusb0_usb.h
usability... no
> checking lusb0_usb.h
presence... no
> checking for
lusb0_usb.h... no
> checking
IOKit/scsi/SCSITaskLib.h usability... no
>
> output from the
makeing of sane-find-scanner:
> for
subdir in hal hotplug hotplug-ng udev; do \
> /bin/mkdir -p $subdir || exit 1; \
> done
> make
all-am
> make[1]: Entering directory
'/home/zeeman/backends/tools'
>
/bin/bash ../libtool --tag=CC --mode=link gcc -Wall
-Wextra -pedantic -g -O2 -o sane-find-scanner
sane-find-scanner.o check-usb-chip.o ../sanei/libsanei.la
../lib/liblib.la -lusb -lieee1284
../backend/sane_strstatus.lo
> libtool:
link: gcc -Wall -Wextra -pedantic -g -O2 -o
sane-find-scanner sane-find-scanner.o check-usb-chip.o
../backend/.libs/sane_strstatus.o
../sanei/.libs/libsanei.a ../lib/.libs/liblib.a -lusb
-lieee1284
> make[1]: Leaving directory
'/home/zeeman/backends/tools'
The sane-find-scanner utility links against
libusb no problem.
> Is
the binary libusb somehow not detected in the
configure-process?
> Or something
else?
Most likely,
you're missing pkg-config. Try
sudo apt install pkg-config
./configure
make
Hope this helps,
--
Olaf Meeuwissen, LPIC-2
FSF Associate Member since 2004-01-27
GnuPG key: F84A2DD9/B3C0 2F47 EA19 64F4 9F13
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