run chunk_compress.c only when compression is enabled

Author: wkliao

configure.ac

@@ -2307,9 +2307,12 @@ fi
 AC_SUBST(ENABLE_SZ)
 AM_CONDITIONAL(ENABLE_SZ, [test x$enable_sz = xyes])
 
+has_compression=0
 if test "x${have_zlib}" = xyes || test "x$enable_sz" = "xyes" ; then
-   AC_DEFINE(ENABLE_COMPRESSION, [1], [Defined if compression is enabled])
+   has_compression=1
 fi
+AC_DEFINE(ENABLE_COMPRESSION, [$has_compression], [Defined if compression is enabled])
+AM_CONDITIONAL(ENABLE_COMPRESSION, [test x$has_compression = x1])
 
 if test "x$enable_sz" = "xyes" ; then
    SZ_INSTALL=""

examples/C/Makefile.am

@@ -37,8 +37,11 @@ check_PROGRAMS = collective_write \
                  ghost_cell \
                  req_all \
                  vard_mvars \
-                 time_var \
-                 chunk_compress
+                 time_var
+
+if ENABLE_COMPRESSION
+  check_PROGRAMS += chunk_compress
+endif
 
 if INSTALL_EXAMPLES
    example_execbin_PROGRAMS = $(check_PROGRAMS)

examples/C/chunk_compress.c

@@ -177,7 +177,7 @@ pnetcdf_io(MPI_Comm comm, char *filename, int cmode)
     /* check the current record dimension size */
     MPI_Offset dim_len;
     err = ncmpi_inq_dimlen(ncid, 0, &dim_len); ERR
-    if (rank == 0)
+    if (verbose && rank == 0)
         printf("Time dimension length = %lld\n", dim_len);
 
     err = ncmpi_close(ncid); ERR