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| author | Ville Syrjälä <[email protected]> | 2020-12-13 18:53:33 +0200 |
|---|---|---|
| committer | raveit65 <[email protected]> | 2020-12-26 23:36:11 +0100 |
| commit | 1b96bc58cb4ce0ce8f90ec26c97437aaed994001 (patch) | |
| tree | f601dd7d828d6067f3a1ccb2a88cff1026cc1fbe /configure.ac | |
| parent | 31da9e1847a5da12c9d81386a29c647908974227 (diff) | |
| download | libmatemixer-1b96bc58cb4ce0ce8f90ec26c97437aaed994001.tar.bz2 libmatemixer-1b96bc58cb4ce0ce8f90ec26c97437aaed994001.tar.xz | |
alsa: Add udev support
Instead of polling for new devices once per second ask
udev to send us events. Avoids waking up the CPU all the
time and wasting power.
We keep the timeout source as a fallback when udev
support is not enabled, or the udev setup fails for
whatever reason.
The logic for udev_event_ok() was snooped from pulseaudio.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 3de0a6b..6081590 100644 --- a/configure.ac +++ b/configure.ac @@ -184,11 +184,38 @@ if test "x$enable_alsa" != "xno"; then fi fi +AC_ARG_ENABLE([udev], + AS_HELP_STRING([--enable-udev], + [Enable UDEV support @<:@default=auto@:>@]), + enable_udev=$enableval, + enable_udev=auto) + +have_udev=no +if test "x$enable_udev" != "xno" -a \ + "x$have_alsa" = "xyes"; then + PKG_CHECK_MODULES(UDEV, [libudev], + have_udev=yes, + have_udev=no) + if test "x$have_udev" = "xyes"; then + AC_DEFINE(HAVE_UDEV, [], [Define if we have UDEV support]) + else + if test "x$enable_udev" = "xyes"; then + AC_MSG_ERROR([UDEV support explicitly requested but dependencies not found]) + else + AC_MSG_NOTICE([UDEV dependencies not found, the module will not be built]) + fi + fi +fi + AM_CONDITIONAL(HAVE_ALSA, test "x$have_alsa" = "xyes") +AM_CONDITIONAL(HAVE_UDEV, test "x$have_udev" = "xyes") AC_SUBST(HAVE_ALSA) AC_SUBST(ALSA_CFLAGS) AC_SUBST(ALSA_LIBS) +AC_SUBST(HAVE_UDEV) +AC_SUBST(UDEV_CFLAGS) +AC_SUBST(UDEV_LIBS) # ----------------------------------------------------------------------- # OSS @@ -269,6 +296,6 @@ echo " Build Null module: $have_null Build PulseAudio module: $have_pulseaudio - Build ALSA module: $have_alsa + Build ALSA module: $have_alsa (udev: $have_udev) Build OSS module: $have_oss " |