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dnl A macro to check the availability of systemtap user-space probes
AC_DEFUN([AM_CHECK_SYSTEMTAP],
[
AC_ARG_ENABLE([systemtap],
[AS_HELP_STRING([--enable-systemtap],
[Enable inclusion of systemtap trace support])],
[ENABLE_SYSTEMTAP="${enableval}"], [ENABLE_SYSTEMTAP='no'])
if test "x${ENABLE_SYSTEMTAP}" = xyes; then
AC_CHECK_PROGS(DTRACE, dtrace)
if test -z "$DTRACE"; then
AC_MSG_ERROR([dtrace not found])
fi
AC_CHECK_HEADER([sys/sdt.h], [SDT_H_FOUND='yes'],
[SDT_H_FOUND='no';
AC_MSG_ERROR([systemtap support needs sys/sdt.h header])])
AC_DEFINE([HAVE_SYSTEMTAP], [1], [Define to 1 if systemtap is enabled])
HAVE_SYSTEMTAP=1
AC_ARG_WITH([tapset-install-dir],
[AS_HELP_STRING([--with-tapset-install-dir],
[The absolute path where the tapset dir will be installed])],
[if test "x${withval}" = x; then
tapset_dir="\$(datadir)/systemtap/tapset"
else
tapset_dir="${withval}"
fi],
[tapset_dir="\$(datadir)/systemtap/tapset"])
AC_SUBST(tapset_dir)
fi
AM_CONDITIONAL([BUILD_SYSTEMTAP], [test x$HAVE_SYSTEMTAP = x1])
])
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