[sane-devel] Can you help me

[m. allan noah]

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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