diff --git a/configure.ac b/configure.ac
index 009f73591..55fc2039d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,8 +66,35 @@ AC_CHECK_HEADERS([ \
 
 AC_CONFIG_SUBDIRS([ \
     testcases/kernel/syscalls/libevent \
+])
+
+AC_ARG_WITH([open-posix-testsuite],
+  [AC_HELP_STRING([--with-open-posix-testsuite],
+    [compile and install the open posix testsuite (default=no)])],
+  [with_open_posix_testsuite=yes]
+)
+if test "x$with_open_posix_testsuite" = xyes; then
+    AC_SUBST([WITH_OPEN_POSIX_TESTSUITE],["yes"])
+else
+    AC_SUBST([WITH_OPEN_POSIX_TESTSUITE],["no"])
+fi
+
+AC_ARG_WITH([realtime-testsuite],
+  [AC_HELP_STRING([--with-realtime-testsuite],
+    [compile and install the realtime testsuite (default=no)])],
+  [with_realtime_testsuite=yes]
+)
+if test "x$with_realtime_testsuite" = xyes; then
+    AC_SUBST([WITH_REALTIME_TESTSUITE],["yes"])
+else
+    AC_SUBST([WITH_REALTIME_TESTSUITE],["no"])
+fi
+
+if test "x$with_realtime_testsuite" = xyes; then
+AC_CONFIG_SUBDIRS([ \
     testcases/realtime \
 ])
+fi
 
 LTP_CHECK_CAPABILITY_SUPPORT
 LTP_CHECK_CRYPTO
diff --git a/include/mk/features.mk.default b/include/mk/features.mk.default
index 9fa183f99..8ee16ff58 100644
--- a/include/mk/features.mk.default
+++ b/include/mk/features.mk.default
@@ -21,7 +21,17 @@
 #
 
 # Path to capset program
-CAPSET			:=
+CAPSET				:= 
 
 # Is securebits[.h], et all support available?
-HAVE_SECUREBITS		:= no
+HAVE_SECUREBITS			:= no
+
+# Enable testcases/open_posix_testsuite's compile and install?
+WITH_OPEN_POSIX_TESTSUITE	:= no
+
+# Enable testcases/realtime's compile and install?
+ifeq ($(UCLINUX),1)
+WITH_REALTIME_TESTSUITE		:= no
+else
+WITH_REALTIME_TESTSUITE		:= no
+endif
diff --git a/include/mk/features.mk.in b/include/mk/features.mk.in
index ee9f06e34..958848e86 100644
--- a/include/mk/features.mk.in
+++ b/include/mk/features.mk.in
@@ -21,7 +21,17 @@
 #
 
 # Path to capset program
-CAPSET			:= @CAPSET@
+CAPSET				:= @CAPSET@
 
 # Is securebits[.h], et all support available?
-HAVE_SECUREBITS		:= @HAVE_SECUREBITS@
+HAVE_SECUREBITS			:= @HAVE_SECUREBITS@
+
+# Enable testcases/open_posix_testsuite's compile and install?
+WITH_OPEN_POSIX_TESTSUITE	:= @WITH_OPEN_POSIX_TESTSUITE@
+
+# Enable testcases/realtime's compile and install?
+ifeq ($(UCLINUX),1)
+WITH_REALTIME_TESTSUITE		:= no
+else
+WITH_REALTIME_TESTSUITE		:= @WITH_REALTIME_TESTSUITE@
+endif
diff --git a/testcases/Makefile b/testcases/Makefile
index 5087ed526..048a33e62 100644
--- a/testcases/Makefile
+++ b/testcases/Makefile
@@ -30,14 +30,10 @@ include $(top_srcdir)/include/mk/env_pre.mk
 #    WILL crash the build host (the tests need to be fixed to just build, not
 #    run).
 # 3. mce-test doesn't fit cleanly in the build, yet.
-# 4. pounder21 is just broken.
+# 4. pounder21 isn't supposed to fit in the build.
 FILTER_OUT_DIRS		:= ballista kdump mce-test open% pounder21
 
-# XXX (garrcoop): Not sure why realtime is still in this list; this was the
-# original list of disabled items...
-# XXX (garrcoop): kdump was in this list.
-# XXX (garrcoop): open_hpi_testsuite was in this list.
-ifeq ($(UCLINUX),1)
+ifneq ($(WITH_REALTIME_TESTSUITE),yes)
 FILTER_OUT_DIRS		+= realtime
 endif