https://bugs.freedesktop.org/show_bug.cgi?id=23957
Previously we detected glibc support at compile time and used
it unconditionally; better to try it and fall back, this way
we continue to run on older kernels when compiled for newer ones.
{
#ifdef HAVE_INOTIFY_INIT1
inotify_fd = inotify_init1 (IN_CLOEXEC);
{
#ifdef HAVE_INOTIFY_INIT1
inotify_fd = inotify_init1 (IN_CLOEXEC);
+ /* This ensures we still run on older Linux kernels.
+ * https://bugs.freedesktop.org/show_bug.cgi?id=23957
+ */
+ if (inotify_fd < 0)
+ inotify_fd = inotify_init ();
#else
inotify_fd = inotify_init ();
#endif
#else
inotify_fd = inotify_init ();
#endif