+dnl check for memcheck support
+AC_MSG_CHECKING(whether debugging memory checks should be enabled)
+AC_ARG_ENABLE([memcheck],
+ [AS_HELP_STRING(--enable-memcheck,enable debugging memory checks [[default=no]])],
+ [case "${enableval}" in
+ yes) ENABLE_MEMCHECK=yes;;
+ *) ENABLE_MEMCHECK=no;;
+ esac],
+ [ENABLE_MEMCHECK=no])
+AC_MSG_RESULT(${ENABLE_MEMCHECK})
+AM_CONDITIONAL([ENABLE_MEMCHECK], test x"${ENABLE_MEMCHECK}" = "xyes")
+
+if test x"${ENABLE_MEMCHECK}" = "xyes"; then
+ AC_DEFINE([ENABLE_MEMCHECK], 1, [perform debugging memory checks])
+fi
+
+
+dnl check for handles (indirection cells) support
+AC_MSG_CHECKING(whether handles (indirection cells) should be enabled)
+AC_ARG_ENABLE([handles],
+ [AS_HELP_STRING(--enable-handles,enable handles (indirection cells) [[default=no]])],
+ [case "${enableval}" in
+ yes) ENABLE_HANDLES=yes;;
+ *) ENABLE_HANDLES=no;;
+ esac],
+ [ENABLE_HANDLES=no])
+AC_MSG_RESULT(${ENABLE_HANDLES})
+AM_CONDITIONAL([ENABLE_HANDLES], test x"${ENABLE_HANDLES}" = "xyes")
+
+if test x"${ENABLE_HANDLES}" = "xyes"; then
+ AC_DEFINE([ENABLE_HANDLES], 1, [enable handles (indirection cells)])
+fi
+
+
+dnl check for vmlog support
+AC_MSG_CHECKING(whether vmlog tracing should be enabled)
+AC_ARG_ENABLE([vmlog],
+ [AS_HELP_STRING(--enable-vmlog,enable vmlog tracing [[default=no]])],
+ [case "${enableval}" in
+ yes) ENABLE_VMLOG=yes;;
+ *) ENABLE_VMLOG=no;;
+ esac],
+ [ENABLE_VMLOG=no])
+AC_MSG_RESULT(${ENABLE_VMLOG})
+AM_CONDITIONAL([ENABLE_VMLOG], test x"${ENABLE_VMLOG}" = "xyes")
+
+if test x"${ENABLE_VMLOG}" = "xyes"; then
+ AC_DEFINE([ENABLE_VMLOG], 1, [enable vmlog tracing code])
+fi
+
+