+AC_FUNC_CHOWN
+AC_FUNC_FORK
+AC_FUNC_MMAP
+AC_FUNC_REALLOC
+AC_FUNC_STRERROR_R
+AC_FUNC_STRNLEN
+AC_CHECK_FUNCS([ \
+ atexit \
+ clock_gettime \
+ ftruncate \
+ getpagesize \
+ gettimeofday \
+ localeconv \
+ memchr \
+ memmove \
+ memset \
+ mkdir \
+ munmap \
+ realpath \
+ sched_getcpu \
+ socket \
+ strchr \
+ strdup \
+ strerror \
+ strtol \
+ sysconf \
+])
+
+# AC_FUNC_MALLOC causes problems when cross-compiling.
+#AC_FUNC_MALLOC
+
+# Checks for header files.
+AC_HEADER_STDBOOL
+AC_CHECK_HEADERS([ \
+ arpa/inet.h \
+ fcntl.h \
+ float.h \
+ limits.h \
+ locale.h \
+ stddef.h \
+ sys/socket.h \
+ sys/time.h \
+ wchar.h \
+])
+
+# Set architecture specific options
+AS_CASE([$host_cpu],
+ [i[[3456]]86], [],
+ [x86_64], [],
+ [amd64], [],
+ [powerpc], [],
+ [ppc64], [],
+ [ppc64le], [],
+ [powerpc64], [],
+ [powerpc64le], [],
+ [s390], [NO_UNALIGNED_ACCESS=1],
+ [s390x], [NO_UNALIGNED_ACCESS=1],
+ [arm*], [
+ NO_UNALIGNED_ACCESS=1
+ NO_NUMA=1
+ ],
+ [aarch64*], [NO_UNALIGNED_ACCESS=1],
+ [mips*], [NO_UNALIGNED_ACCESS=1],
+ [tile*], [NO_UNALIGNED_ACCESS=1],
+ [
+ UNSUPPORTED_ARCH=1
+ NO_UNALIGNED_ACCESS=1
+ ])
+
+# Configuration options, which will be installed in the config.h
+AH_TEMPLATE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [Use efficient unaligned access.])
+AH_TEMPLATE([LTTNG_UST_HAVE_SDT_INTEGRATION], [SystemTap integration via sdt.h])
+AH_TEMPLATE([LTTNG_UST_HAVE_PERF_EVENT], [Perf event integration via perf_event.h])
+
+# Checks for libraries.
+AC_CHECK_LIB([dl], [dlopen], [
+ libdl_name=dl
+ DL_LIBS="-ldl"
+], [
+ #libdl not found, check for dlopen in libc.
+ AC_CHECK_LIB([c], [dlopen], [
+ libdl_name=c
+ DL_LIBS="-lc"
+ ], [
+ AC_MSG_ERROR([Cannot find dlopen in libdl nor libc. Use [LDFLAGS]=-Ldir to specify their location.])
+ ])
+])
+AC_SUBST(DL_LIBS)
+
+# Check if libdl has dlmopen support.
+AH_TEMPLATE([HAVE_DLMOPEN], ["Define to 1 if dlmopen is available."])
+AC_CHECK_LIB([$libdl_name], [dlmopen],
+ [AC_DEFINE([HAVE_DLMOPEN], [1])]
+)
+
+AC_CHECK_LIB([pthread], [pthread_create])
+AC_CHECK_LIB([pthread], [pthread_setname_np],
+ AC_DEFINE([HAVE_PTHREAD_SETNAME_NP], [1], [Define to 1 if pthread_setname_np is available.]),
+ AC_CHECK_LIB([pthread], [pthread_set_name_np],
+ AC_DEFINE([HAVE_PTHREAD_SET_NAME_NP], [1], [Define to 1 if pthread_set_name_np is available.]),
+ AC_MSG_RESULT([pthread setname/set_name not found.])))
+
+# Check for dlfcn.h
+AC_CHECK_HEADER([dlfcn.h])
+AS_IF([test "x${ac_cv_header_dlfcn_h}" = "xyes"], [
+ AC_CHECK_DECLS([RTLD_DI_LINKMAP], [], [], [
+ #define _GNU_SOURCE /* Required on Linux to get GNU extensions */
+ #include <dlfcn.h>
+ ])
+], [
+ ac_cv_have_decl_RTLD_DI_LINKMAP="no"
+])
+
+AM_CONDITIONAL([HAVE_DLINFO], [test "x${ac_cv_have_decl_RTLD_DI_LINKMAP}" = "xyes"])
+
+# URCU
+
+# urcu - check if we just find the headers it out of the box.
+AC_CHECK_HEADERS([urcu-bp.h], [], [AC_MSG_ERROR([Cannot find [URCU] headers (urcu-bp.h). Use [CPPFLAGS]=-Idir to specify their location.
+This error can also occur when the liburcu package's configure script has not been run.])])
+
+# urcu-cds - check that URCU Concurrent Data Structure lib is available to compilation
+# Part of Userspace RCU library 0.7.2 or better.
+AC_CHECK_LIB([urcu-cds], [_cds_lfht_new], [], [AC_MSG_ERROR([Cannot find
+liburcu-cds lib, part of Userspace RCU 0.7 or better. Use [LDFLAGS]=-Ldir to specify its location.])])
+
+AC_MSG_CHECKING([caa_likely()])
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ #include <urcu/compiler.h>
+ void fct(void)
+ {
+ if (caa_likely(1)) {
+ }
+ }
+]])], [
+ AC_MSG_RESULT([yes])
+], [
+ AC_MSG_RESULT([no])
+ AC_MSG_ERROR([Please upgrade your version of liburcu to 0.6.6 or better])
+])
+
+# urcu - check that URCU lib is available to compilation
+AC_CHECK_LIB([urcu-bp], [urcu_bp_synchronize_rcu], [], [AC_MSG_ERROR([Cannot find liburcu-bp 0.11 or newer. Use [LDFLAGS]=-Ldir to specify its location.])])
+
+# urcu - check that URCU lib is at least version 0.11
+AC_CHECK_LIB([urcu-bp], [urcu_bp_call_rcu], [], [AC_MSG_ERROR([liburcu 0.11 or newer is needed, please update your version or use [LDFLAGS]=-Ldir to specify the right location.])])
+
+# numa.h integration
+AS_IF([test "x$NO_NUMA" = "x1"],[
+ AS_IF([test "x$enable_numa" = "x" ], [enable_numa=no])
+])
+
+AC_ARG_ENABLE([numa], [
+AS_HELP_STRING([--disable-numa], [disable NUMA support])
+], [
+ enable_numa=$enableval
+], [
+ enable_numa=yes
+])
+
+AS_IF([test "x$enable_numa" = "xyes"], [
+ # numa - check that numa lib is available
+ AC_CHECK_LIB([numa], [numa_available], [],
+[AC_MSG_ERROR([libnuma is not available. Please either install it (e.g. libnuma-dev) or use [LDFLAGS]=-Ldir to specify the right location, or use --disable-numa configure argument to disable NUMA support.])])
+ have_libnuma=yes
+])
+AM_CONDITIONAL([HAVE_LIBNUMA], [test "x$have_libnuma" = "xyes"])
+
+# optional linux/perf_event.h
+AC_CHECK_HEADERS([linux/perf_event.h], [have_perf_event=yes], [])
+
+# Perf event counters are supported on all architectures supported by
+# perf, using the read system call as fallback.
+AM_CONDITIONAL([HAVE_PERF_EVENT], [test "x$have_perf_event" = "xyes"])
+
+AS_IF([test "x$have_perf_event" = "xyes"], [
+ AC_DEFINE([LTTNG_UST_HAVE_PERF_EVENT], [1])
+])
+
+AS_IF([test "x$NO_UNALIGNED_ACCESS" = "x"], [
+ AC_DEFINE([LTTNG_UST_HAVE_EFFICIENT_UNALIGNED_ACCESS], [1])
+])
+
+# 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=$enableval
+], [
+ jni_interface=no
+])
+
+AM_CONDITIONAL([BUILD_JNI_INTERFACE], [test "x$jni_interface" = "xyes"])
+
+
+AC_ARG_ENABLE([java-agent-jul], [
+AS_HELP_STRING([--enable-java-agent-jul], [build the LTTng UST Java agent with JUL support [default=no]])
+], [
+ java_agent_jul=$enableval
+], [
+ java_agent_jul=no
+])