diff --git a/CMakeLists.txt b/CMakeLists.txt
index a47930005b5..a01e215b35b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -301,7 +301,6 @@ SET(LDFLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS_${CMAKE_BU
 is_disabled(BUILD_SHARED_LIBS enable_static)
 is_enabled(BUILD_SHARED_LIBS enable_shared)
 
-is_enabled(ENABLE_NETCDF_4 HAS_NC4)
 is_enabled(USE_SZIP HAS_SZIP)
 is_enabled(USE_SZIP HAS_SZIP_WRITE)
 is_enabled(STATUS_PNETCDF HAS_PNETCDF)
diff --git a/configure.ac b/configure.ac
index dd92a1a4403..f8fa8dbd1af 100644
--- a/configure.ac
+++ b/configure.ac
@@ -238,6 +238,20 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include "netcdf_meta.h"],
 #endif]
 ])], [have_netcdf_par=yes], [have_netcdf_par=no])
 
+# Do we have szip?
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include "netcdf_meta.h"],
+[[#if !NC_HAS_SZIP_WRITE
+# error
+#endif]
+])], [have_szip_write=yes], [have_szip_write=no])
+
+# Do we have parallel filter support?
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include "netcdf_meta.h"],
+[[#if !NC_HAS_PAR_FILTERS
+# error
+#endif]
+])], [have_par_filters=yes], [have_par_filters=no])
+
 AC_MSG_CHECKING([whether netCDF provides parallel IO])
 AC_MSG_RESULT([${have_netcdf_par}])
 if test x$have_netcdf_par = xyes; then
@@ -350,12 +364,10 @@ AC_SUBST([LDFLAGS])
 AC_SUBST([AM_CFLAGS])
 AC_SUBST([AM_CPPFLAGS])
 AC_SUBST([AM_LDFLAGS])
-AC_SUBST(HAS_NC4,[$enable_netcdf_4])
 AC_SUBST(HAS_PNETCDF,[$enable_pnetcdf])
 AC_SUBST(HAS_LOGGING, [$enable_logging])
-AC_SUBST(HAS_SZIP,[$enable_szlib])
-AC_SUBST(HAS_SZIP_WRITE, [$enable_szlib])
-AC_SUBST([HAS_PAR_FILTERS], [$hdf5_supports_par_filters])
+AC_SUBST(HAS_SZIP_WRITE, [$have_szip_write])
+AC_SUBST([HAS_PAR_FILTERS], [$have_par_filters])
 
 # Create the build summary file. 
 AC_CONFIG_FILES([libpio.settings])
diff --git a/libpio.settings.in b/libpio.settings.in
index df5d14bb256..88e735e2324 100644
--- a/libpio.settings.in
+++ b/libpio.settings.in
@@ -24,9 +24,7 @@ Extra libraries:	@LIBS@
 
 # Features
 --------
-NetCDF-4 API:		@HAS_NC4@
 PnetCDF Support:	@HAS_PNETCDF@
-SZIP Support:           @HAS_SZIP@
 SZIP Write Support:     @HAS_SZIP_WRITE@
 Parallel Filters:       @HAS_PAR_FILTERS@