+ [AC_MSG_ERROR([liburcu $liburcu_version or newer is needed])], [[#include <urcu/list.h>]]
+)
+AC_CHECK_DECL([cds_wfq_init], [],
+ [AC_MSG_ERROR([liburcu $liburcu_version or newer is needed])], [[#include <urcu/wfqueue.h>]]
+)
+AC_CHECK_DECL([futex_async], [],
+ [AC_MSG_ERROR([liburcu $liburcu_version or newer is needed])], [[#include <urcu/futex.h>]]
+)
+AC_CHECK_DECL([rcu_thread_offline], [],
+ [AC_MSG_ERROR([liburcu $liburcu_version or newer is needed])], [[#include <urcu.h>]]
+)
+AC_CHECK_DECL([rcu_thread_online], [],
+ [AC_MSG_ERROR([liburcu $liburcu_version or newer is needed])], [[#include <urcu.h>]]
+)
+AC_CHECK_DECL([ustctl_create_session],
+ [
+ AC_DEFINE([CONFIG_LTTNG_TOOLS_HAVE_UST], 1)
+ have_ust_test=1
+ ],
+ [
+ AC_MSG_WARN([UST header not found. Building without UST support.])
+ have_ust_test=0
+ ],
+ [[#include <ust/lttng-ust-ctl.h>]]
+)
+
+AM_CONDITIONAL([LTTNG_TOOLS_HAVE_UST], [ test "x$have_ust_test" = "x1" ])
+
+AC_CHECK_FUNCS([sched_getcpu sysconf])
+
+# Epoll check. If not present, the build will fallback on poll() API
+AX_HAVE_EPOLL(
+ [AX_CONFIG_FEATURE_ENABLE(epoll)],
+ [AX_CONFIG_FEATURE_DISABLE(epoll)]
+)
+AX_CONFIG_FEATURE(
+ [epoll], [This platform supports epoll(7)],
+ [HAVE_EPOLL], [This platform supports epoll(7).],
+ [enable_epoll="yes"], [enable_epoll="no"]