configure: Fix hard-coded enabled v4l2 probe on Linux/ARM
Currently, enable_v4l2_probe is hard-coded to "yes" on linux, platforms
arm and aarch64. This even overrides the --disable-v4l2-probe argument.
As a result, it is impossible to disable v4l2_probe. It becomes a problem
for use-cases, when startup time is critical, because the v4l2_probe
feature increases the initialization time.
This commit makes the v4l2_probe feature configurable.
On linux, platforms arm and aarch64, the default value is still "yes".
But now it can be disabled by the --disable-v4l2-probe argument.
https://bugzilla.gnome.org/show_bug.cgi?id=795200
diff --git a/configure.ac b/configure.ac
index 3d0efea..f56c2a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -598,18 +598,20 @@
fi
dnl Allow enabling v4l2 device probing
+default_v4l2_probe=no
AS_CASE([$host],
[*-*linux*],
[AS_CASE([$host_cpu],
[arm*], [
- enable_v4l2_probe="yes"],
+ default_v4l2_probe=yes],
[aarch64*], [
- enable_v4l2_probe="yes"])])
+ default_v4l2_probe=yes])])
AC_ARG_ENABLE(
v4l2-probe,
AC_HELP_STRING(
[--enable-v4l2-probe],
- [enable V4L2 plugin to probe devices @<:@default=no@:>@]))
+ [enable V4L2 plugin to probe devices]),
+ [], [enable_v4l2_probe=$default_v4l2_probe])
if test "x$enable_v4l2_probe" = "xyes"; then
AC_DEFINE(GST_V4L2_ENABLE_PROBE, 1,
[Define if Video4Linux probe shall be run at plugin load])
