-# urcu - check that URCU lib is available to compilation
-AC_CHECK_LIB([urcu-bp], [synchronize_rcu_bp], [], [AC_MSG_ERROR([Cannot find liburcu-bp lib. Use [LDFLAGS]=-Ldir to specify its location.])])
-
-# urcu - check that URCU lib is at least version 0.6
-AC_CHECK_LIB([urcu-bp], [call_rcu_bp], [], [AC_MSG_ERROR([liburcu 0.6 or newer is needed, please update your version or use [LDFLAGS]=-Ldir to specify the right location.])])
-
-# optional linux/perf_event.h
-AC_CHECK_HEADERS([linux/perf_event.h], [have_perf_event=yes], [])
-
-# Perf event counters are only supported on x86 so far.
-AC_MSG_CHECKING([UST support for architecture perf event counters])
-case $host_cpu in
-changequote(,)dnl
- i[3456]86)
-changequote([,])dnl
- UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
- x86_64) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
- amd64) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=yes;;
- *) UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS=no;;
-esac
-AC_MSG_RESULT([$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS])
-
-AM_CONDITIONAL([HAVE_PERF_EVENT], [test "x$have_perf_event" = "xyes" -a "x$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS" = "xyes"])
-
-if test "x$have_perf_event" = "xyes" -a "x$UST_SUPPORT_FOR_ARCH_PERF_EVENT_COUNTERS" = "xyes"; then
-AC_DEFINE([LTTNG_UST_HAVE_PERF_EVENT], [1])
-fi
-
-AC_MSG_CHECKING([host system alignment requirements])
-case $host_cpu in
-changequote(,)dnl
- i[3456]86)
-changequote([,])dnl
- ;;
- x86_64) ;;
- amd64) ;;
- powerpc) ;;
- ppc64) ;;
- ppc64le) ;;
- powerpc64) ;;
- powerpc64le) ;;
- s390) NO_UNALIGNED_ACCESS=1 ;;
- s390x) NO_UNALIGNED_ACCESS=1 ;;
- arm*) NO_UNALIGNED_ACCESS=1 ;;
- mips*) NO_UNALIGNED_ACCESS=1 ;;
- tile*) NO_UNALIGNED_ACCESS=1 ;;
- *) AC_MSG_ERROR([unable to detect alignment requirements (unsupported architecture ($host_cpu)?)]) ;;
-esac
-AC_MSG_RESULT([$host_cpu])
-
-if test x$NO_UNALIGNED_ACCESS = x ; then
-AC_DEFINE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [1])
-fi
-
-# Check for JNI header files if requested
-AC_ARG_ENABLE([jni-interface],
- [AS_HELP_STRING([--enable-jni-interface],[build JNI interface between C and Java. Needs Java include files [default=no]])],
- [jni_interface=$withval],
- [jni_interface=no]
-)