relay: use urcu_ref_get_unless_zero

[lttng-tools.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 197288d9af88ae194f4e2e80882e6c16b9654a24..9239e3b0b0f8afcc34d080917fab4333ad6ed99b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -385,7 +385,7 @@ AM_CONDITIONAL([LTTNG_BUILD_WITH_LIBC_UUID], [test "x$link_with_libc_uuid" = "xy
 AC_CHECK_FUNC([clock_gettime], [AC_DEFINE_UNQUOTED([LTTNG_HAVE_CLOCK_GETTIME], 1, [Has clock_gettime() support.])])
 
 # URCU library version needed or newer
-m4_define([WRONG_LIBURCU_MSG], [Userspace RCU (liburcu) >= 0.8.0 is needed])
+m4_define([WRONG_LIBURCU_MSG], [Userspace RCU (liburcu) >= 0.9.0 is needed])
 
 # Check liburcu needed function calls
 AC_CHECK_DECL([cds_list_add], [],
@@ -410,6 +410,11 @@ AC_CHECK_DECL([cmm_smp_mb__before_uatomic_or], [],
         [AC_MSG_ERROR([WRONG_LIBURCU_MSG])], [[#include <urcu.h>]]
 )
 
+#Function added in urcu 0.9.0
+AC_CHECK_DECL([urcu_ref_get_unless_zero], [],
+        [AC_MSG_ERROR([WRONG_LIBURCU_MSG])], [[#include <urcu/ref.h>]]
+)
+
 # Check kmod library
 AC_ARG_WITH(kmod-prefix,
   AS_HELP_STRING([--with-kmod-prefix=PATH],