diff --git a/config/opal_check_pmi.m4 b/config/opal_check_pmi.m4
index 345115ad32..dfbdfdeed4 100644
--- a/config/opal_check_pmi.m4
+++ b/config/opal_check_pmi.m4
@@ -424,9 +424,11 @@ AC_DEFUN([OPAL_CHECK_PMIX],[
                        [Whether the external PMIx library is v1])
     AM_CONDITIONAL([OPAL_WANT_PRUN], [test "$opal_prun_happy" = "yes"])
 
-    AS_IF([test "$opal_external_pmix_version" = "1x"],
-          [OPAL_SUMMARY_ADD([[Miscellaneous]],[[PMIx support]], [opal_pmix], [1.2.x: WARNING - DYNAMIC OPS NOT SUPPORTED])],
-          [OPAL_SUMMARY_ADD([[Miscellaneous]],[[PMIx support]], [opal_pmix], [$opal_external_pmix_version])])
+    AS_IF([test "$opal_external_pmix_happy" = "yes"],
+          [AS_IF([test "$opal_external_pmix_version" = "1x"],
+                 [OPAL_SUMMARY_ADD([[Miscellaneous]],[[PMIx support]], [opal_pmix], [External (1.2.5) WARNING - DYNAMIC OPS NOT SUPPORTED])],
+                 [OPAL_SUMMARY_ADD([[Miscellaneous]],[[PMIx support]], [opal_pmix], [External ($opal_external_pmix_version)])])],
+          [OPAL_SUMMARY_ADD([[Miscellaneous]], [[PMIx support]], [opal_pmix], [Internal])])
 
     OPAL_VAR_SCOPE_POP
 ])
diff --git a/config/opal_config_subdir_args.m4 b/config/opal_config_subdir_args.m4
index 3b7a35580f..0d5f8febab 100644
--- a/config/opal_config_subdir_args.m4
+++ b/config/opal_config_subdir_args.m4
@@ -10,7 +10,7 @@ dnl Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
 dnl                         University of Stuttgart.  All rights reserved.
 dnl Copyright (c) 2004-2005 The Regents of the University of California.
 dnl                         All rights reserved.
-dnl Copyright (c) 2014-2015 Intel, Inc. All rights reserved.
+dnl Copyright (c) 2014-2018 Intel, Inc.  All rights reserved.
 dnl Copyright (c) 2015      Cisco Systems, Inc.  All rights reserved.
 dnl $COPYRIGHT$
 dnl
@@ -60,6 +60,10 @@ do
 	    ;;
 	-with-platform=* | --with-platform=*)
 	    ;;
+        --with*=internal)
+            ;;
+        --with*=external)
+            ;;
 	*)
 	    case $subdir_arg in
 	    *\'*) subdir_arg=`echo "$subdir_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
diff --git a/opal/mca/pmix/ext2x/Makefile.am b/opal/mca/pmix/ext2x/Makefile.am
index e527355843..194443d93a 100644
--- a/opal/mca/pmix/ext2x/Makefile.am
+++ b/opal/mca/pmix/ext2x/Makefile.am
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2017 Intel, Inc. All rights reserved.
+# Copyright (c) 2014-2018 Intel, Inc.  All rights reserved.
 # Copyright (c) 2015      Cisco Systems, Inc.  All rights reserved.
 # Copyright (c) 2015      Research Organization for Information Science
 #                         and Technology (RIST). All rights reserved.
@@ -38,15 +38,15 @@ endif
 
 mcacomponentdir = $(opallibdir)
 mcacomponent_LTLIBRARIES = $(component_install)
-mca_pmix_ext2x_la_SOURCES = $(sources)
+mca_pmix_ext2x_la_SOURCES = $(sources) $(headers)
 mca_pmix_ext2x_la_CFLAGS = $(opal_pmix_ext2x_CFLAGS)
-mca_pmix_ext2x_la_CPPFLAGS =$(opal_pmix_ext2x_CPPFLAGS)
+mca_pmix_ext2x_la_CPPFLAGS = $(opal_pmix_ext2x_CPPFLAGS)
 mca_pmix_ext2x_la_LDFLAGS = -module -avoid-version $(opal_pmix_ext2x_LDFLAGS)
 mca_pmix_ext2x_la_LIBADD = $(top_builddir)/opal/lib@OPAL_LIB_PREFIX@open-pal.la \
 	$(opal_pmix_ext2x_LIBS)
 
 noinst_LTLIBRARIES = $(component_noinst)
-libmca_pmix_ext2x_la_SOURCES =$(sources)
+libmca_pmix_ext2x_la_SOURCES = $(sources) $(headers)
 libmca_pmix_ext2x_la_CFLAGS = $(opal_pmix_ext2x_CFLAGS)
 libmca_pmix_ext2x_la_CPPFLAGS = $(opal_pmix_ext2x_CPPFLAGS)
 libmca_pmix_ext2x_la_LDFLAGS = -module -avoid-version $(opal_pmix_ext2x_LDFLAGS)
diff --git a/opal/mca/pmix/ext2x/ext2x.h b/opal/mca/pmix/ext2x/ext2x.h
index 8e2012906c..0f28c8f667 100644
--- a/opal/mca/pmix/ext2x/ext2x.h
+++ b/opal/mca/pmix/ext2x/ext2x.h
@@ -37,12 +37,6 @@
 
 BEGIN_C_DECLS
 
-#ifdef OPAL_C_HAVE_VISIBILITY
-#define PMIX_HAVE_VISIBILITY 1
-#else
-#undef PMIX_HAVE_VISIBILITY
-#endif
-
 typedef struct {
   opal_pmix_base_component_t super;
   bool legacy_get;
diff --git a/opal/mca/pmix/pmix3x/configure.m4 b/opal/mca/pmix/pmix3x/configure.m4
index 646e1debf8..6188960eb3 100644
--- a/opal/mca/pmix/pmix3x/configure.m4
+++ b/opal/mca/pmix/pmix3x/configure.m4
@@ -87,6 +87,9 @@ AC_DEFUN([MCA_opal_pmix_pmix3x_CONFIG],[
           [AC_MSG_RESULT([no - disqualifying this component])
            opal_pmix_pmix3x_happy=0],
           [AC_MSG_RESULT([yes - using the internal v3.x library])
+           AS_IF([test "$opal_pmix_pmix3x_happy" = "0"],
+                 [AC_MSG_WARN([INTERNAL PMIX FAILED TO CONFIGURE])
+                  AC_MSG_ERROR([CANNOT CONTINUE])])
            # Build flags for our Makefile.am
            opal_pmix_pmix3x_LDFLAGS=
            opal_pmix_pmix3x_LIBS="$OPAL_TOP_BUILDDIR/$opal_pmix_pmix3x_basedir/pmix/src/libpmix.la"
diff --git a/opal/mca/pmix/pmix3x/pmix/config/pmix_setup_hwloc.m4 b/opal/mca/pmix/pmix3x/pmix/config/pmix_setup_hwloc.m4
index 4ee046d9ab..86a9b9d447 100644
--- a/opal/mca/pmix/pmix3x/pmix/config/pmix_setup_hwloc.m4
+++ b/opal/mca/pmix/pmix3x/pmix/config/pmix_setup_hwloc.m4
@@ -24,6 +24,8 @@ AC_DEFUN([PMIX_HWLOC_CONFIG],[
                                 [Search for hwloc libraries in DIR ])])
 
     pmix_hwloc_support=0
+    AS_IF([test "$with_hwloc" = "internal" || test "$with_hwloc" = "external"],
+          [with_hwloc=])
 
     if test "$with_hwloc" != "no"; then
         AC_MSG_CHECKING([for hwloc in])