[sane-devel] sane backend build system - help

[Chris Bagwell]

Have you looked at doc/backend-writing.txt?

I suggest taking notes as you work threw this process and provide
patches to that file to improve it for next author.

On Mon, Apr 25, 2011 at 9:05 AM, Paul Newall <p.newalls at ntlworld.com> wrote:
> Progress:
> I managed to copy an existing backend, and add it to the build system. So
> now I can start the actual backend writing process.
> That was quite hard work. I'm not sure if that was just me, or whether it
> might encourage other people to have a go at writing a backend if there was
> an easier way to get started.
>
> Maybe some experienced backend writer could provide one of the following?
>
> A build and install system for a single backend. I think that would be the
> easiest to understand. And the install process would be faster during
> developement if you were only installing one backend. It would need to be
> easy to change the backend name, perhaps by changing one variable with the
> name in?
>
> Or, provide one empty backend as part of the sane-backends, that you can
> experiment with without having to copy and rename an existing backend.
>
> Also it would be nice to have empty backend files: emptybackend.c
> emptybackend.h emptybackend.conf
> with lots of comments in about what you should add in various places.
>
>
> ----- Original Message ----- From: "Paul Newall" <p.newalls at ntlworld.com>
> To: <sane-devel at lists.alioth.debian.org>
> Sent: Sunday, April 24, 2011 8:26 PM
> Subject: Re: [sane-devel] sane backend build system - help
>
>
>> autoreconf -i -f
>> seems to have enabled me to make the backends.
>> So now I am trying the approach of adding a new backend (copy of an
>> existing one) to the backends to see if I can install that.
>>
>> Paul
>>
>> ----- Original Message ----- From: "Chris Bagwell" <chris at cnpbagwell.com>
>> To: "Paul Newall" <p.newalls at ntlworld.com>
>> Cc: <sane-devel at lists.alioth.debian.org>
>> Sent: Sunday, April 24, 2011 7:15 PM
>> Subject: Re: [sane-devel] sane backend build system - help
>>
>>
>> Its common to have a newer version of autofoo tools on your system and
>> you'll need to update the pre-existing files committed in git.
>>
>> Try running with install option to get newer versions of files: autoreconf
>> -i
>>
>> If that doesn't work then use the force option:  autoreconf -i -f
>>
>> Chris
>>
>> On Sun, Apr 24, 2011 at 10:17 AM, Paul Newall <p.newalls at ntlworld.com>
>> wrote:
>>>
>>> I want to write a new backend.
>>> Currently the main obstacle is that I find the backend build system very
>>> intimidating.
>>> I have no experience of autoconf, automake, or libtool.
>>> On my system (ubuntu 10.10) I can run autoreconf and ./configure
>>> apparently
>>> OK, but when I run make I get these errors:
>>>
>>> libtool: Version mismatch error. This is libtool 2.2.10, but the
>>> libtool: definition of this LT_INIT comes from libtool 2.2.6b.
>>> libtool: You should recreate aclocal.m4 with macros from libtool 2.2.10
>>> libtool: and run autoconf again.
>>> make[2]: *** [libsane_la-dll-s.lo] Error 63
>>>
>>> How would I recreate aclocal.m4 with macros from libtool 2.2.10 ? I don't
>>> have much idea what that means.
>>>
>>> Is it best to start by adding an empty new backend to the build system?
>>> (in
>>> which case I will need to get the build system to work first)
>>> Or would it be better to make and install the new backend independently
>>> during development? (this might be easier? and it might give me a faster
>>> modify, build, test cycle during development? But are there difficulties
>>> that I have not discovered yet?)
>>>
>>>
>>> --
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>>
>>
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