AC_CHECK_LIB([lttng-ust-ctl], [ustctl_create_session], [],
[AC_MSG_ERROR([Cannot find LTTng-UST. Use [LDFLAGS]=-Ldir to specify its location, or specify --disable-lttng-ust to build lttng-tools without LTTng-UST support.])]
)
AC_CHECK_LIB([lttng-ust-ctl], [ustctl_create_session], [],
[AC_MSG_ERROR([Cannot find LTTng-UST. Use [LDFLAGS]=-Ldir to specify its location, or specify --disable-lttng-ust to build lttng-tools without LTTng-UST support.])]
)