configure.ac: Add LTTng tracepoints feature

Change-Id: I192ff24448a6454c8d504febd7ab2df2ccf88272

configure.ac

@@ -52,6 +52,11 @@ AC_ARG_ENABLE([agent],
 AM_CONDITIONAL([ENABLE_AGENT], [test "x$enable_agent" = "xyes"])
 AM_COND_IF([ENABLE_AGENT], [AC_CONFIG_FILES([test/agent/Makefile])])
 
+AC_ARG_ENABLE([tracepoints], AS_HELP_STRING([--enable-tracepoints], [Enable tracepoints]))
+
+AM_CONDITIONAL([ENABLE_TRACEPOINTS], [test "x$enable_tracepoints" = "xyes"])
+
+
 dnl Check for programs
 AC_PROG_CC
 AC_PROG_CXX
@@ -613,6 +618,11 @@ AC_DEFINE_UNQUOTED([HAVE_SHM],
   `if test "x$with_dbus" == xyes; then echo 1; else echo 0; fi`,
   [Define if you have shared memory support])
 
+# LTTNG
+AM_COND_IF([ENABLE_TRACEPOINTS],
+ [PKG_CHECK_MODULES(LTTNG, [lttng-ust >= 2.13],, AC_MSG_ERROR([Missing lttng-ust]))
+  PKG_CHECK_MODULES(LIBURCU, [liburcu >= 0.13.1],, AC_MSG_ERROR([Missng liburcu]))])
+
 # DOXYGEN
 # required dependency(ies): doxygen
 # check for doxygen, mostly stolen from http://log4cpp.sourceforge.net/