add configure switches for ALSA, JACK and pulseaudio

[domichel]

It would be great on linux to have configure options for ALSA, JACK and pulseaudio. The reason is simple: as a musician, linux provide JACK as professional grade sound server and pulseaudio is not even installed into my system. I have to patch Makefile.am in order to remove pulse from the build, and it would be much better if it was enable/disable configure switches for that.

--- giada-0.15.4-src/Makefile.am.orig 2019-03-21 22:43:15.000000000 +0100
+++ giada-0.15.4-src/Makefile.am 2019-07-12 17:32:45.585780900 +0200
@@ -369,11 +369,11 @@

if LINUX

-# Add preprocessor flags to enable ALSA, Pulse and JACK in RtAudio.
-cppFlags += -D__LINUX_ALSA__ -D__LINUX_PULSE__ -D__UNIX_JACK__
+# Add preprocessor flags to enable ALSA and JACK in RtAudio.
+cppFlags += -D__LINUX_ALSA__ -D__UNIX_JACK__

ldAdd += -lsndfile -lfltk -lXext -lX11 -lXft -lXpm -lm -ljack -lasound \

• -lpthread -ldl -lpulse-simple -lpulse -lsamplerate -lrtmidi -ljansson \

• -lpthread -ldl -lsamplerate -lrtmidi -ljansson
  -lfreetype -lfontconfig -lXrender -lXfixes -lXcursor -lXinerama

endif

[monocasual]

Cool idea. Could you please make a pull request for this? Sorry, misread: that's the manual workaround.

Adding --with-pulse, --with-jack and so on shouldn't be a problem.

[domichel]

Le Sun, 27 Oct 2019 12:57:47 -0700, Monocasual Laboratories <notifications@github.com> a écrit :

Cool idea. Could you please make a pull request for this?

I can try when I get some time. For that, I need to know if, with rtaudio, which is the real giada dependency on linux, we are free to enable/disable each one of these 3 audio servers independently of the other ones?

…

-- If you have a problem and you are not doing anything to fix it, you are at the heart of the problem.

[monocasual]

Sure, actually it's just a matter of defining some preprocessor macros. Specifically: __LINUX_ALSA__, __LINUX_PULSE__ and __UNIX_JACK__.

Currently these macros are hardcoded in the Makefile.am. It's just a matter of mapping new flags such as --with-alsa, --with-pulse , ... to the macros above.

I can take a look at it as soon as all the issues from 0.16.0-beta1 have been closed.

[monocasual]

Postponed to 0.17 as this feature depends on #153 .

[gvnnz]

How-to with CMake: https://stackoverflow.com/questions/27570567/is-it-possible-to-set-cmake-variables-with-add-subdirectory/27573961

[gvnnz]

Better wait for #315, if PR thestk/rtaudio#251 will get merged. Moving to 0.18.

[gvnnz]

Done in cfcd79c .