GNU bug report logs - #15067
24.3.50; configure does not allow for sound support without ALSA

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Ulrich Mueller <ulm <at> gentoo.org>
Subject: bug#15067: closed (Re: bug#15067: 24.3.50; configure does not
 allow for sound support without ALSA)
Date: Sat, 31 Aug 2013 19:56:04 +0000

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Your bug report

#15067: 24.3.50; configure does not allow for sound support without ALSA

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 15067 <at> debbugs.gnu.org.

-- 
15067: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=15067
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Glenn Morris <rgm <at> gnu.org>
To: 15067-done <at> debbugs.gnu.org
Subject: Re: bug#15067: 24.3.50;
 configure does not allow for sound support without ALSA
Date: Sat, 31 Aug 2013 15:55:27 -0400

Version: 24.4

Applied.

I think no-one is going to know what these options mean without reading
configure.ac, but I don't expect (m)any people will use them apart from
the people who reported these issues in the first place.

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From: Ulrich Mueller <ulm <at> gentoo.org>
To: bug-gnu-emacs <at> gnu.org
Cc: emacs <at> gentoo.org
Subject: 24.3.50; configure does not allow for sound support without ALSA
Date: Sat, 10 Aug 2013 12:13:57 +0200

Tags: patch

In GNU Emacs 24.3.50.1 (x86_64-pc-linux-gnu, Motif Version 2.3.4)
 of 2013-08-02 on juno
Bzr revision: monnier <at> iro.umontreal.ca-20130801231837-onq015h5medtj4ea
Windowing system distributor `The X.Org Foundation', version
 11.0.11402901
System Description:	NAME=Gentoo

After the 2013-07-27 change to configure.ac, --with-sound will accept
option values (yes, no, ossaudio, alsa). However, it is not possible
to enable sound support but prevent autodetection of ALSA.
For example, when configuring --with-sound=yes on a GNU/Linux system,
ALSA will be enabled when it is found.

The patch below adds a new value --with-sound=voxware that will enable
sound but not ALSA, i.e. src/sound.c will then use the /dev/dsp device
of OSS.

(I'd have preferred the name "oss" over "voxware", but there already
is "ossaudio" and I think having "oss" along with it would be too
confusing. Also src/sound.c refers to the driver as Voxware and
functions are called vox_init() etc. But feel free to change it to
"oss" if you think that confusion is not an issue.)


--- emacs-orig/ChangeLog
+++ emacs/ChangeLog
@@ -1,3 +1,9 @@
+2013-08-10  Ulrich Müller  <ulm <at> gentoo.org>
+
+	* configure.ac: Allow for --with-sound=voxware that will enable
+	sound but otherwise disable ALSA. This will use the OSS device,
+	typically /dev/dsp, for sound output.
+
 2013-08-10  Eli Zaretskii  <eliz <at> gnu.org>
 
 	* configure.ac: Define and substitute UPDATE_MANIFEST.
--- emacs-orig/configure.ac
+++ emacs/configure.ac
@@ -142,12 +142,12 @@
     AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
 
 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
-  [compile with sound support (VALUE one of: yes, ossaudio, alsa, no;
+  [compile with sound support (VALUE one of: yes, ossaudio, alsa, voxware, no;
 default yes).  Only for GNU/Linux, FreeBSD, NetBSD, MinGW.])],
   [ case "${withval}" in
-      yes|no|ossaudio|alsa) val=$withval ;;
+      yes|no|ossaudio|alsa|voxware) val=$withval ;;
       *) AC_MSG_ERROR([`--with-sound=$withval' is invalid;
-this option's value should be `yes', `no', `ossaudio', or `alsa'.])
+this option's value should be `yes', `no', `ossaudio', `alsa', or `voxware'.])
       ;;
     esac
     with_sound=$val
@@ -1274,6 +1274,9 @@
     #include <windows.h>
     #endif
     ])
+  test "${with_sound}" = "voxware" && test "${have_sound_header}" != "yes" && \
+    AC_MSG_ERROR([OSS/Voxware sound support requested but not found.])
+
   if test "${with_sound}" = "ossaudio" || test "${with_sound}" = "yes"; then
     # Emulation library used on NetBSD.
     AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)

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