diff --git a/configure.ac b/configure.ac
index 8ad88a66135..9e9a880eeb2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -280,6 +280,7 @@ fi
 if test "x$enable_netcdf_integration" = xyes; then
   AC_DEFINE([HDF5_PARALLEL],[1],[Does HDF5 library provide parallel access])
   AC_DEFINE([USE_NETCDF4],[1],[Does HDF5 library provide parallel access])
+  AC_DEFINE([NETCDF_INTEGRATION],[1],[Are we building with netCDF integration])
 fi
 
 AM_CONDITIONAL(BUILD_NCINT, [test "x$enable_netcdf_integration" = xyes])
diff --git a/src/Makefile.am b/src/Makefile.am
index 4eaa356d1c8..eab6ab0d2f1 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -5,7 +5,7 @@
 # Does the user want to build fortran?
 if BUILD_FORTRAN
 FLIB = flib
-endif
+endif # BUILD_FORTRAN
 
 # Are we building with the GPTL timing library?
 if USE_GPTL
diff --git a/src/clib/Makefile.am b/src/clib/Makefile.am
index a938e0d867a..66c7a948825 100644
--- a/src/clib/Makefile.am
+++ b/src/clib/Makefile.am
@@ -7,6 +7,7 @@ lib_LTLIBRARIES = libpioc.la
 # Are we building with netCDF integration?
 if BUILD_NCINT
 libpioc_la_LIBADD = ../ncint/libncint.la
+libpioc_la_CPPFLAGS = -I${top_srcdir}/src/ncint
 endif # BUILD_NCINT
 
 # These linker flags specify libtool version info.
diff --git a/src/clib/pio.h b/src/clib/pio.h
index f1203456ca0..56b36bd732d 100644
--- a/src/clib/pio.h
+++ b/src/clib/pio.h
@@ -1250,6 +1250,7 @@ extern "C" {
     int nc_init_intracomm(MPI_Comm comp_comm, int num_iotasks, int stride, int base, int rearr,
                           int *iosysidp);
 
+    int nc_set_iosystem(int iosysid);
     int nc_free_iosystem(int iosysid);
 
     int nc_init_decomp(int iosysid, int pio_type, int ndims, const int *gdimlen,