Re: Autotools help

2016-10-22 Thread Ryan Schmidt 
On Oct 22, 2016, at 10:35, Craig Treleaven  wrote:
> 
> I’m working on an update to Lirc and the build system has changed to 
> Autotools--which I know very little about.
> 
> It seems that Lirc will now opportunistically link with Alsa and there is no 
> configure flag to disable such behaviour.  I want to make Alsa support a 
> non-default variant.  Is my best option to patch the configure.ac file?
> 
> I believe the relevant portion of configure.ac is:
> 
> dnl audio_alsa driver requires ALSA library installed and some linker flags
> have_alsa=no
> AC_CHECK_HEADERS(alsa/asoundlib.h,[
>  AC_CHECK_LIB(asound, snd_pcm_open,[
>AM_CONDITIONAL([BUILD_LIBALSA],[true])
>AC_DEFINE(HAVE_LIBALSA)
>have_alsa=yes
>],[
>AM_CONDITIONAL([BUILD_LIBALSA],[false])],
>)
>],[
>AM_CONDITIONAL([BUILD_LIBALSA],[false])]
> )
> 
> From:
> https://sourceforge.net/p/lirc/git/ci/lirc-0_9_4c/tree/configure.ac
> 
> What exactly would I patch in to ignore Alsa?

Usually, after running configure, you can find ac_cv_ variables in the 
config.log or config.h file representing the feature you're interested in. You 
can then supply a name=value configure argument to override it with whatever 
value you want. 
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Re: Autotools help

2016-10-22 Thread Craig Treleaven 
> On Oct 22, 2016, at 11:35 AM, Craig Treleaven  wrote:
> 
> Hi:
> 
> I’m working on an update to Lirc and the build system has changed to 
> Autotools--which I know very little about.
> 
> It seems that Lirc will now opportunistically link with Alsa

Argh, nevermind.  I was thinking of pulseaudio but that is different from alsa.

Craig
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Autotools help

2016-10-22 Thread Craig Treleaven 
Hi:

I’m working on an update to Lirc and the build system has changed to 
Autotools--which I know very little about.

It seems that Lirc will now opportunistically link with Alsa and there is no 
configure flag to disable such behaviour.  I want to make Alsa support a 
non-default variant.  Is my best option to patch the configure.ac file?

I believe the relevant portion of configure.ac is:

dnl audio_alsa driver requires ALSA library installed and some linker flags
have_alsa=no
AC_CHECK_HEADERS(alsa/asoundlib.h,[
  AC_CHECK_LIB(asound, snd_pcm_open,[
AM_CONDITIONAL([BUILD_LIBALSA],[true])
AC_DEFINE(HAVE_LIBALSA)
have_alsa=yes
],[
AM_CONDITIONAL([BUILD_LIBALSA],[false])],
)
],[
AM_CONDITIONAL([BUILD_LIBALSA],[false])]
)

From:
https://sourceforge.net/p/lirc/git/ci/lirc-0_9_4c/tree/configure.ac

What exactly would I patch in to ignore Alsa?

Many thanks,

Craig

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