[gentoo-user] Brother scanner wants libusb-0.1.so.4

[gentoo-user] Brother scanner wants libusb-0.1.so.4

[Bertram Scharpf]

Hi,

my olde Brother printer/scanner device MFC-7420 needs
libraries that are provided as binaries on the Brother site.
Until I switched to amd64 they worked well on a x64 system.

Now I loaded down the amd64 version but it doesn't work. The
problem seems to be a library load.

  # SANE_DEBUG_DLL=1 scanimage -L
  [sanei_debug] Setting debug level of dll to 1.
  [dll] sane_init: SANE dll backend version 1.0.13 from sane-backends 1.0.24
  [dll] load: dlopen() failed (libusb-0.1.so.4: cannot open shared object file: No such file or directory)
  ...

  No scanners were identified. ...

Indeed, "libusb-0.1.so.4" is hardcoded in
"libsane-brother2.so". The libraries present are

  # equery b /lib64/libusb-*
   * Searching for /lib64/libusb-1.0.so.0,/lib64/libusb-1.0.so.0.1.0 ... 
  dev-libs/libusb-1.0.19-r1 (/lib64/libusb-1.0.so.0.1.0)
  dev-libs/libusb-1.0.19-r1 (/lib64/libusb-1.0.so.0 -> libusb-1.0.so.0.1.0)

When I use brute force and symlink 0.1 to 1.0 I get another
error that doesn't actually surprise me.

  # ln -s libusb-1.0.so.0.1.0 libusb-0.1.so.4
  # SANE_DEBUG_DLL=1 scanimage -L            
  [sanei_debug] Setting debug level of dll to 1.
  [dll] sane_init: SANE dll backend version 1.0.13 from sane-backends 1.0.24
  [dll] load: dlopen() failed (/usr/lib64/sane/libsane-brother2.so.1: undefined symbol: usb_busses)
  ...

Brother provides a source package but I cannot compile that
because it isn't even complete, and when I mail them, they
don't answer.

Is there _any_ way to solve this?

Thanks in advance.

Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de

Re: [gentoo-user] Brother scanner wants libusb-0.1.so.4

[Alecks Gates]

On Wed, 2016-10-05 at 23:45 +0200, Bertram Scharpf wrote:
> Hi,
> 
> my olde Brother printer/scanner device MFC-7420 needs
> libraries that are provided as binaries on the Brother site.
> Until I switched to amd64 they worked well on a x64 system.
> 
> Now I loaded down the amd64 version but it doesn't work. The
> problem seems to be a library load.
> 
>   # SANE_DEBUG_DLL=1 scanimage -L
>   [sanei_debug] Setting debug level of dll to 1.
>   [dll] sane_init: SANE dll backend version 1.0.13 from sane-backends 
> 1.0.24
>   [dll] load: dlopen() failed (libusb-0.1.so.4: cannot open shared
> object file: No such file or directory)
>   ...
> 
>   No scanners were identified. ...
> 
> Indeed, "libusb-0.1.so.4" is hardcoded in
> "libsane-brother2.so". The libraries present are
> 
>   # equery b /lib64/libusb-*
>    * Searching for /lib64/libusb-1.0.so.0,/lib64/libusb-1.0.so.0.1.0
> ... 
>   dev-libs/libusb-1.0.19-r1 (/lib64/libusb-1.0.so.0.1.0)
>   dev-libs/libusb-1.0.19-r1 (/lib64/libusb-1.0.so.0 -> libusb-
> 1.0.so.0.1.0)
> 
> When I use brute force and symlink 0.1 to 1.0 I get another
> error that doesn't actually surprise me.
> 
>   # ln -s libusb-1.0.so.0.1.0 libusb-0.1.so.4
>   # SANE_DEBUG_DLL=1 scanimage -L            
>   [sanei_debug] Setting debug level of dll to 1.
>   [dll] sane_init: SANE dll backend version 1.0.13 from sane-backends 
> 1.0.24
>   [dll] load: dlopen() failed (/usr/lib64/sane/libsane-brother2.so.1: 
> undefined symbol: usb_busses)
>   ...
> 
> Brother provides a source package but I cannot compile that
> because it isn't even complete, and when I mail them, they
> don't answer.
> 
> Is there _any_ way to solve this?
> 
> Thanks in advance.
> 
> Bertram
> 
> 

I recently started using the brother-overlay[0], and so far the drivers
have "just worked" for me.  I can't tell offhand if your driver is
included there.

[0] https://github.com/stefan-langenmaier/brother-overlay

Alecks Gates

[gentoo-user] Re: Brother scanner wants libusb-0.1.so.4

[Jonathan Callen]

[-- Attachment #1.1: Type: text/plain, Size: 1890 bytes --]

On 10/05/2016 05:45 PM, Bertram Scharpf wrote:
> Hi,
> 
> my olde Brother printer/scanner device MFC-7420 needs
> libraries that are provided as binaries on the Brother site.
> Until I switched to amd64 they worked well on a x64 system.
> 
> Now I loaded down the amd64 version but it doesn't work. The
> problem seems to be a library load.
> 
>   # SANE_DEBUG_DLL=1 scanimage -L
>   [sanei_debug] Setting debug level of dll to 1.
>   [dll] sane_init: SANE dll backend version 1.0.13 from sane-backends 1.0.24
>   [dll] load: dlopen() failed (libusb-0.1.so.4: cannot open shared object file: No such file or directory)
>   ...
> 
>   No scanners were identified. ...
> 
> Indeed, "libusb-0.1.so.4" is hardcoded in
> "libsane-brother2.so". The libraries present are
> 
>   # equery b /lib64/libusb-*
>    * Searching for /lib64/libusb-1.0.so.0,/lib64/libusb-1.0.so.0.1.0 ... 
>   dev-libs/libusb-1.0.19-r1 (/lib64/libusb-1.0.so.0.1.0)
>   dev-libs/libusb-1.0.19-r1 (/lib64/libusb-1.0.so.0 -> libusb-1.0.so.0.1.0)
> 
> When I use brute force and symlink 0.1 to 1.0 I get another
> error that doesn't actually surprise me.
> 
>   # ln -s libusb-1.0.so.0.1.0 libusb-0.1.so.4
>   # SANE_DEBUG_DLL=1 scanimage -L            
>   [sanei_debug] Setting debug level of dll to 1.
>   [dll] sane_init: SANE dll backend version 1.0.13 from sane-backends 1.0.24
>   [dll] load: dlopen() failed (/usr/lib64/sane/libsane-brother2.so.1: undefined symbol: usb_busses)
>   ...
> 
> Brother provides a source package but I cannot compile that
> because it isn't even complete, and when I mail them, they
> don't answer.
> 
> Is there _any_ way to solve this?
> 
> Thanks in advance.
> 
> Bertram
> 

To get libusb-0.1.so.4, you need to install dev-libs/libusb-compat
(which uses the new libusb 1.0 to provide the old libusb 0.1 API).

-- 
Jonathan Callen


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 829 bytes --]

Re: [gentoo-user] Re: Brother scanner wants libusb-0.1.so.4

[Bertram Scharpf]

On Friday, 07. Oct 2016, 00:23:54 -0400, Jonathan Callen wrote:
> On 10/05/2016 05:45 PM, Bertram Scharpf wrote:
> > 
> >   # SANE_DEBUG_DLL=1 scanimage -L
> >   [sanei_debug] Setting debug level of dll to 1.
> >   [dll] sane_init: SANE dll backend version 1.0.13 from sane-backends 1.0.24
> >   [dll] load: dlopen() failed (libusb-0.1.so.4: cannot open shared object file: No such file or directory)
> >   ...
> 
> To get libusb-0.1.so.4, you need to install dev-libs/libusb-compat
> (which uses the new libusb 1.0 to provide the old libusb 0.1 API).

Works. Great! Thank you!

Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de