[sane-devel] Could you help me

[YiHao at rst.ricoh.com]

Dear allan:

Thanks for your help,
I still can't get the debug log by using the following,
LD_LIBRARY_PATH=/usr/local/lib            SANE_DEBUG_RICOH=255  xsane
==>×
LD_LIBRARY_PATH=/usr/local/lib/sane   SANE_DEBUG_RICOH=255  xsane       ==>
×

 I would like to ask whether there are other  "LD_LIBRARY_PATH" needs to be
set.

Best Regard
Yours Sincerely, Yihao


> "m. allan noah" <kitno455 at gmail.com> wrote on 11/05/2013 09:45:32 PM:
>
> You are running a recompiled version of scanimage, which searches
> /usr/local for libraries. Your system provided xsane does not do this.
> Try telling the linker where to look like so:
>
> LD_LIBRARY_PATH=/usr/local/lib SANE_DEBUG_RICOH=255  xsane
>
> If this works, you can make it permanent by adding /usr/local/lib to
> /etc/ld.so.conf, and running ldconfig
>
> allan
>
> On Tue, Nov 5, 2013 at 5:21 AM,  <YiHao at rst.ricoh.com> wrote:
> Hello allan,
>
> I can get debug log with scanimage, Thanks a lot !
> But, I can not get the debug log of the backends correctly with the
> graphical frontend(xscanimage or xsane).
> -----------------------------------------
> 1>CFLAGS="-g  -o" ./configure BACKENDS="ricoh"
> 2>make
> 3>make install
> 4>SANE_DEBUG_RICOH=255  xsane    --->XSANE has been started, but I can
get
> the debug logging of the backends
> -----------------------------------------
> I'm not sure,
> Whether the problem is because the installation path can not be the
default
> </usr/local/lib/sane/>.
>
> What should I do  if I want to get the debug log of the backends using
the
> graphical frontend,
> Look forward to your help, Thank you~
>
> Best Regard
> Yours Sincerely, Yihao
>
>--------------------------------------------------------------------------------------------------------------------------------

>
> 1. I don't think you want to use --disable-shared.  You should build and
> install shared libraries someplace that your system's linker will find
> them.
>
> 2. You get debug logging by using environment variables with any sane
> frontend, like so:
>
> SANE_DEBUG_RICOH=255 scanimage -L
>
> 3. You do not see any scanners listed by scanimage -L because the
> sane-backend only supports a few older ricoh scanners. I doubt your
scanner
> is supported. Three different backends provide this support.
>
> See a list here: http://www.sane-project.org/sane-mfgs.html#Z-RICOH
>
> allan
>
>
>
> On Fri, Aug 23, 2013 at 6:24 AM,  <YiHao at rst.ricoh.com>wrote:
> Dear Sir or Madam:
> I was so pleased to received your reply,
>
> I have some questions about using the debugging library，Can you give me
> some advice?
> ①
> If I want to debug the sane-backends(e.g. ricoh.c),
> Please give me some advice for the following steps(Is there anything
> wrong?).
> -----------------------------------------
> 1>CFLAGS="-g" ./configure --disable-shared BACKENDS="ricoh"
> 2>make
> 3>make install
> 4>... ...（How Can I make this step?）
> -----------------------------------------
> ②
> I'm not sure, If I can get the debug information through the following
> steps.
> -----------------------------------------
> 1>CFLAGS="-g" ./configure --disable-shared
> 2>make
> 3>make install
>
>  "scanimage -L"  --Faild to get the debug information.
> -----------------------------------------
> ③
> I can't get any sane-backends information by "scanimage -L",
> Whether I must have a scanner device connected to My computer through USB
> or SCSI ?
>
> Thank you very much, Looking forward to your reply.
> Best Regard
> Yours Sincerely,  Yihao
>
>
>
>
>
>
>
>
>
>
>
> We have a debugging library which is part of sane-backends. It allows you
> to set an environment variable, and which causes the backend to print
> messages to STDERR. If your backend is part of sane-backends, you can use
> this library. If you backend is outside of sane-backends, you can
certainly
> setup something similar in your backend. You should not have to recompile
> the frontend.
>
> allan
>
>
> On Thu, Aug 22, 2013 at 6:46 AM,  <YiHao at rst.ricoh.com>wrote:
>
> Dear Sir or Madam:
>
> I want to know,
> How can I debug the sane-backend by frontend(e.g. scanimage),
>
> How to enter the backend's breakpoint,
> Do I need to compile the frontend if I want to know  whether the backend
> receives the Frontend command.
>
>
>
>
>
> Can you give me some advise, Thank you.
> Best Regard
>
> Yours Sincerely, Yihao
>
>
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>
>
>
> --
> "The truth is an offense, but not a sin"
>
>
>
> --
> "The truth is an offense, but not a sin"



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"The truth is an offense, but not a sin"