[svn-r27191] Merged r26781 to r27185 from trunk

Tested on: 64-bit Ubuntu Linux VM w/ gcc 4.8.2
    (C++ and Fortran 2003 also tested)

17 files changed, 69 insertions, 69 deletions

diff --git a/tools/h5diff/h5diffgentest.c b/tools/h5diff/h5diffgentest.c
index 1b80317..cfaffe6 100644
--- a/tools/h5diff/h5diffgentest.c
+++ b/tools/h5diff/h5diffgentest.c
@@ -106,8 +106,8 @@ hsize_t H5TOOLS_MALLOCSIZE = (128 * 1024 * 1024);
 #define SPACE1_DIM2 0
 
 /* A UD link traversal function.  Shouldn't actually be called. */
-static hid_t UD_traverse(UNUSED const char * link_name, UNUSED hid_t cur_group,
-                         UNUSED const void * udata, UNUSED size_t udata_size, UNUSED hid_t lapl_id)
+static hid_t UD_traverse(H5_ATTR_UNUSED const char * link_name, H5_ATTR_UNUSED hid_t cur_group,
+                         H5_ATTR_UNUSED const void * udata, H5_ATTR_UNUSED size_t udata_size, H5_ATTR_UNUSED hid_t lapl_id)
 {
     return -1;
 }
diff --git a/tools/h5dump/h5dump_ddl.c b/tools/h5dump/h5dump_ddl.c
index e38b93b..3822251 100644
--- a/tools/h5dump/h5dump_ddl.c
+++ b/tools/h5dump/h5dump_ddl.c
@@ -112,7 +112,7 @@ dump_dataspace(hid_t space)
  *-------------------------------------------------------------------------
  */
 herr_t
-dump_attr_cb(hid_t oid, const char *attr_name, const H5A_info_t UNUSED *info, void UNUSED *_op_data)
+dump_attr_cb(hid_t oid, const char *attr_name, const H5A_info_t H5_ATTR_UNUSED *info, void H5_ATTR_UNUSED *_op_data)
 {
     h5tools_context_t ctx;            /* print context  */
     h5tool_format_t  *outputformat = &h5tools_dataformat;
@@ -182,7 +182,7 @@ dump_attr_cb(hid_t oid, const char *attr_name, const H5A_info_t UNUSED *info, vo
  *-------------------------------------------------------------------------
  */
 static herr_t
-dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void UNUSED *op_data)
+dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_ATTR_UNUSED *op_data)
 {
     hid_t       obj;
     herr_t      ret = SUCCEED;
@@ -1295,7 +1295,7 @@ dump_fcontents(hid_t fid)
 }
 
 static herr_t
-attr_search(hid_t oid, const char *attr_name, const H5A_info_t UNUSED *ainfo, void *_op_data)
+attr_search(hid_t oid, const char *attr_name, const H5A_info_t H5_ATTR_UNUSED *ainfo, void *_op_data)
 {
     herr_t              ret = SUCCEED;
     int 				i;
@@ -1351,7 +1351,7 @@ attr_search(hid_t oid, const char *attr_name, const H5A_info_t UNUSED *ainfo, vo
 } /* end attr_search() */
 
 static herr_t
-obj_search(const char *path, const H5O_info_t *oi, const char UNUSED *already_visited, void *_op_data)
+obj_search(const char *path, const H5O_info_t *oi, const char H5_ATTR_UNUSED *already_visited, void *_op_data)
 {
 	trav_handle_udata_t  *handle_data = (trav_handle_udata_t*)_op_data;
     char *op_name = (char*)handle_data->op_name;
@@ -1443,7 +1443,7 @@ lnk_search(const char *path, const H5L_info_t *li, void *_op_data)
  *-------------------------------------------------------------------------
  */
 void
-handle_paths(hid_t fid, const char *path_name, void UNUSED * data, int UNUSED pe, const char UNUSED *display_name)
+handle_paths(hid_t fid, const char *path_name, void H5_ATTR_UNUSED * data, int H5_ATTR_UNUSED pe, const char H5_ATTR_UNUSED *display_name)
 {
     hid_t  gid = -1;
 
@@ -1506,7 +1506,7 @@ handle_paths(hid_t fid, const char *path_name, void UNUSED * data, int UNUSED pe
  *-------------------------------------------------------------------------
  */
 void
-handle_attributes(hid_t fid, const char *attr, void UNUSED * data, int UNUSED pe, const char UNUSED *display_name)
+handle_attributes(hid_t fid, const char *attr, void H5_ATTR_UNUSED * data, int H5_ATTR_UNUSED pe, const char H5_ATTR_UNUSED *display_name)
 {
     hid_t  oid = -1;
     hid_t  attr_id = -1;
@@ -1817,7 +1817,7 @@ handle_datasets(hid_t fid, const char *dset, void *data, int pe, const char *dis
  *-------------------------------------------------------------------------
  */
 void
-handle_groups(hid_t fid, const char *group, void UNUSED *data, int pe, const char *display_name)
+handle_groups(hid_t fid, const char *group, void H5_ATTR_UNUSED *data, int pe, const char *display_name)
 {
     hid_t       gid;
     const char  *real_name = display_name ? display_name : group;
@@ -1867,7 +1867,7 @@ handle_groups(hid_t fid, const char *group, void UNUSED *data, int pe, const cha
  *-------------------------------------------------------------------------
  */
 void
-handle_links(hid_t fid, const char *links, void UNUSED * data, int UNUSED pe, const char UNUSED *display_name)
+handle_links(hid_t fid, const char *links, void H5_ATTR_UNUSED * data, int H5_ATTR_UNUSED pe, const char H5_ATTR_UNUSED *display_name)
 {
     H5L_info_t linfo;
 
@@ -1962,7 +1962,7 @@ handle_links(hid_t fid, const char *links, void UNUSED * data, int UNUSED pe, co
  *-------------------------------------------------------------------------
  */
 void
-handle_datatypes(hid_t fid, const char *type, void UNUSED * data, int pe, const char *display_name)
+handle_datatypes(hid_t fid, const char *type, void H5_ATTR_UNUSED * data, int pe, const char *display_name)
 {
     hid_t       type_id;
     const char  *real_name = display_name ? display_name : type;
diff --git a/tools/h5dump/h5dump_ddl.h b/tools/h5dump/h5dump_ddl.h
index c4f4638..6cd9181 100644
--- a/tools/h5dump/h5dump_ddl.h
+++ b/tools/h5dump/h5dump_ddl.h
@@ -36,10 +36,10 @@ herr_t    dump_attr_cb(hid_t loc_id, const char *attr_name, const H5A_info_t *in
 
 void handle_paths(hid_t fid, const char *path_name, void *data, int pe, const char *display_name);
 void handle_datasets(hid_t fid, const char *dset, void *data, int pe, const char *display_name);
-void handle_attributes(hid_t fid, const char *attr, void UNUSED * data, int UNUSED pe, const char UNUSED *display_name);
-void handle_groups(hid_t fid, const char *group, void UNUSED *data, int pe, const char *display_name);
-void handle_links(hid_t fid, const char *links, void UNUSED * data, int UNUSED pe, const char UNUSED *display_name);
-void handle_datatypes(hid_t fid, const char *type, void UNUSED * data, int pe, const char *display_name);
+void handle_attributes(hid_t fid, const char *attr, void H5_ATTR_UNUSED * data, int H5_ATTR_UNUSED pe, const char H5_ATTR_UNUSED *display_name);
+void handle_groups(hid_t fid, const char *group, void H5_ATTR_UNUSED *data, int pe, const char *display_name);
+void handle_links(hid_t fid, const char *links, void H5_ATTR_UNUSED * data, int H5_ATTR_UNUSED pe, const char H5_ATTR_UNUSED *display_name);
+void handle_datatypes(hid_t fid, const char *type, void H5_ATTR_UNUSED * data, int pe, const char *display_name);
 
 #ifdef __cplusplus
 }
diff --git a/tools/h5dump/h5dump_xml.c b/tools/h5dump/h5dump_xml.c
index 6ccbc8c..4f8d250 100644
--- a/tools/h5dump/h5dump_xml.c
+++ b/tools/h5dump/h5dump_xml.c
@@ -141,7 +141,7 @@ static char            *xml_escape_the_name(const char *);
  *-------------------------------------------------------------------------
  */
 static herr_t
-xml_dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void UNUSED *op_data)
+xml_dump_all_cb(hid_t group, const char *name, const H5L_info_t *linfo, void H5_ATTR_UNUSED *op_data)
 {
     hid_t       obj;
     herr_t      ret = SUCCEED;
@@ -1854,7 +1854,7 @@ xml_dump_dataspace(hid_t space)
  *-------------------------------------------------------------------------
  */
 void
-xml_dump_data(hid_t obj_id, int obj_data, struct subset_t UNUSED * sset, int UNUSED pindex)
+xml_dump_data(hid_t obj_id, int obj_data, struct subset_t H5_ATTR_UNUSED * sset, int H5_ATTR_UNUSED pindex)
 {
     hid_t               space = -1;
     hid_t               type = -1;
@@ -2051,8 +2051,8 @@ xml_dump_data(hid_t obj_id, int obj_data, struct subset_t UNUSED * sset, int UNU
  *-------------------------------------------------------------------------
  */
 herr_t
-xml_dump_attr(hid_t attr, const char *attr_name, const H5A_info_t UNUSED *info,
-    void UNUSED * op_data)
+xml_dump_attr(hid_t attr, const char *attr_name, const H5A_info_t H5_ATTR_UNUSED *info,
+    void H5_ATTR_UNUSED * op_data)
 {
     hid_t             attr_id = -1;
     hid_t             type = -1;
@@ -3753,7 +3753,7 @@ xml_dump_fill_value(hid_t dcpl, hid_t type)
  *-------------------------------------------------------------------------
  */
 void
-xml_dump_dataset(hid_t did, const char *name, struct subset_t UNUSED * sset)
+xml_dump_dataset(hid_t did, const char *name, struct subset_t H5_ATTR_UNUSED * sset)
 {
     hid_t               type;
     hid_t               space;
diff --git a/tools/h5dump/h5dumpgentest.c b/tools/h5dump/h5dumpgentest.c
index c04afe9..250f96f 100644
--- a/tools/h5dump/h5dumpgentest.c
+++ b/tools/h5dump/h5dumpgentest.c
@@ -128,13 +128,13 @@ write_dset( hid_t loc_id, int rank, hsize_t *dims, const char *dset_name,
 
 /* a filter operation callback function */
 static size_t
-myfilter(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
-        const unsigned int UNUSED *cd_values, size_t nbytes,
-        size_t UNUSED *buf_size, void UNUSED **buf);
+myfilter(unsigned int H5_ATTR_UNUSED flags, size_t H5_ATTR_UNUSED cd_nelmts,
+        const unsigned int H5_ATTR_UNUSED *cd_values, size_t nbytes,
+        size_t H5_ATTR_UNUSED *buf_size, void H5_ATTR_UNUSED **buf);
 
 /* a "set local" callback     */
 static herr_t
-set_local_myfilter(hid_t dcpl_id, hid_t tid, hid_t UNUSED sid);
+set_local_myfilter(hid_t dcpl_id, hid_t tid, hid_t H5_ATTR_UNUSED sid);
 
 #define MYFILTER_ID 405
 
@@ -151,8 +151,8 @@ const H5Z_class2_t H5Z_MYFILTER[1] = {{
 
 
 /* A UD link traversal function.  Shouldn't actually be called. */
-static hid_t UD_traverse(UNUSED const char * link_name, UNUSED hid_t cur_group,
-        UNUSED const void * udata, UNUSED size_t udata_size, UNUSED hid_t lapl_id)
+static hid_t UD_traverse(H5_ATTR_UNUSED const char * link_name, H5_ATTR_UNUSED hid_t cur_group,
+        H5_ATTR_UNUSED const void * udata, H5_ATTR_UNUSED size_t udata_size, H5_ATTR_UNUSED hid_t lapl_id)
 {
     return -1;
 }
@@ -5626,9 +5626,9 @@ static void gent_filters(void)
  *-------------------------------------------------------------------------
  */
 static size_t
-myfilter(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
-        const unsigned int UNUSED *cd_values, size_t nbytes,
-        size_t UNUSED *buf_size, void UNUSED **buf)
+myfilter(unsigned int H5_ATTR_UNUSED flags, size_t H5_ATTR_UNUSED cd_nelmts,
+        const unsigned int H5_ATTR_UNUSED *cd_values, size_t nbytes,
+        size_t H5_ATTR_UNUSED *buf_size, void H5_ATTR_UNUSED **buf)
 {
     return nbytes;
 }
@@ -5643,7 +5643,7 @@ myfilter(unsigned int UNUSED flags, size_t UNUSED cd_nelmts,
  */
 
 static herr_t
-set_local_myfilter(hid_t dcpl_id, hid_t UNUSED tid, hid_t UNUSED sid)
+set_local_myfilter(hid_t dcpl_id, hid_t H5_ATTR_UNUSED tid, hid_t H5_ATTR_UNUSED sid)
 {
     unsigned flags;                        /* Filter flags */
     size_t   cd_nelmts = 0;                /* Number of filter parameters */
diff --git a/tools/h5jam/h5jamgentest.c b/tools/h5jam/h5jamgentest.c
index 5a93c13..5f24566 100644
--- a/tools/h5jam/h5jamgentest.c
+++ b/tools/h5jam/h5jamgentest.c
@@ -96,8 +96,8 @@ typedef struct s1_t {
 #define ARRAY3_DIM2 3
 
 /* A UD link traversal function.  Shouldn't actually be called. */
-static hid_t UD_traverse(const char UNUSED * link_name, hid_t UNUSED cur_group,
-    const void UNUSED * udata, size_t UNUSED udata_size, hid_t UNUSED lapl_id)
+static hid_t UD_traverse(const char H5_ATTR_UNUSED * link_name, hid_t H5_ATTR_UNUSED cur_group,
+    const void H5_ATTR_UNUSED * udata, size_t H5_ATTR_UNUSED udata_size, hid_t H5_ATTR_UNUSED lapl_id)
 {
     return -1;
 }
diff --git a/tools/h5ls/h5ls.c b/tools/h5ls/h5ls.c
index aa23dd7..0428960 100644
--- a/tools/h5ls/h5ls.c
+++ b/tools/h5ls/h5ls.c
@@ -385,7 +385,7 @@ print_obj_name(h5tools_str_t *buffer, const iter_t *iter, const char *oname,
  *-------------------------------------------------------------------------
  */
 static hbool_t
-print_native_type(h5tools_str_t *buffer, hid_t type, int UNUSED ind)
+print_native_type(h5tools_str_t *buffer, hid_t type, int H5_ATTR_UNUSED ind)
 {
     if (H5Tequal(type, H5T_NATIVE_SCHAR)==TRUE) {
         h5tools_str_append(buffer, "native signed char");
@@ -503,7 +503,7 @@ print_native_type(h5tools_str_t *buffer, hid_t type, int UNUSED ind)
  *-------------------------------------------------------------------------
  */
 static hbool_t
-print_ieee_type(h5tools_str_t *buffer, hid_t type, int UNUSED ind)
+print_ieee_type(h5tools_str_t *buffer, hid_t type, int H5_ATTR_UNUSED ind)
 {
     if (H5Tequal(type, H5T_IEEE_F32BE)==TRUE) {
         h5tools_str_append(buffer, "IEEE 32-bit big-endian float");
@@ -999,7 +999,7 @@ print_enum_type(h5tools_str_t *buffer, hid_t type, int ind)
  *-------------------------------------------------------------------------
  */
 static hbool_t
-print_string_type(h5tools_str_t *buffer, hid_t type, int UNUSED ind)
+print_string_type(h5tools_str_t *buffer, hid_t type, int H5_ATTR_UNUSED ind)
 {
     H5T_str_t  pad;
     const char  *pad_s=NULL;
@@ -1102,7 +1102,7 @@ print_string_type(h5tools_str_t *buffer, hid_t type, int UNUSED ind)
  *-------------------------------------------------------------------------
  */
 static hbool_t
-print_reference_type(h5tools_str_t *buffer, hid_t type, int UNUSED ind)
+print_reference_type(h5tools_str_t *buffer, hid_t type, int H5_ATTR_UNUSED ind)
 {
     if (H5T_REFERENCE!=H5Tget_class(type)) return FALSE;
 
@@ -1491,8 +1491,8 @@ dump_dataset_values(hid_t dset)
  *-------------------------------------------------------------------------
  */
 static herr_t
-list_attr(hid_t obj, const char *attr_name, const H5A_info_t UNUSED *ainfo,
-    void UNUSED *op_data)
+list_attr(hid_t obj, const char *attr_name, const H5A_info_t H5_ATTR_UNUSED *ainfo,
+    void H5_ATTR_UNUSED *op_data)
 {
     hid_t               attr = -1;
     hid_t               space = -1;
@@ -1743,7 +1743,7 @@ dataset_list1(hid_t dset)
  *-------------------------------------------------------------------------
  */
 static herr_t
-dataset_list2(hid_t dset, const char UNUSED *name)
+dataset_list2(hid_t dset, const char H5_ATTR_UNUSED *name)
 {
     hid_t       dcpl;           /* dataset creation property list */
     hid_t       type;           /* data type of dataset */
@@ -1976,7 +1976,7 @@ dataset_list2(hid_t dset, const char UNUSED *name)
  *-------------------------------------------------------------------------
  */
 static herr_t
-datatype_list2(hid_t type, const char UNUSED *name)
+datatype_list2(hid_t type, const char H5_ATTR_UNUSED *name)
 {
     if (verbose_g>0) {
         hsize_t             curr_pos = 0;        /* total data element position   */
diff --git a/tools/h5repack/h5repack_copy.c b/tools/h5repack/h5repack_copy.c
index b5f6861..1171ab8 100644
--- a/tools/h5repack/h5repack_copy.c
+++ b/tools/h5repack/h5repack_copy.c
@@ -66,7 +66,7 @@ static void print_user_block(const char *filename, hid_t fid);
 static herr_t walk_error_callback(unsigned n, const H5E_error2_t *err_desc, void *udata);
 
 /* get the major number from the error stack. */
-static herr_t walk_error_callback(UNUSED unsigned n, const H5E_error2_t *err_desc, void *udata) {
+static herr_t walk_error_callback(H5_ATTR_UNUSED unsigned n, const H5E_error2_t *err_desc, void *udata) {
 	if (err_desc)
 		*((hid_t *) udata) = err_desc->maj_num;
 
diff --git a/tools/h5repack/h5repack_main.c b/tools/h5repack/h5repack_main.c
index bc7b4e5..c56e3ce 100644
--- a/tools/h5repack/h5repack_main.c
+++ b/tools/h5repack/h5repack_main.c
@@ -21,7 +21,7 @@
 #define PROGRAMNAME "h5repack"
 
 static int parse_command_line(int argc, const char **argv, pack_opt_t* options);
-static void leave(int ret) NORETURN;
+static void leave(int ret) H5_ATTR_NORETURN;
 
 
 /* module-scoped variables */
diff --git a/tools/h5stat/h5stat.c b/tools/h5stat/h5stat.c
index 1310fd5..ac6ca23 100644
--- a/tools/h5stat/h5stat.c
+++ b/tools/h5stat/h5stat.c
@@ -745,7 +745,7 @@ obj_stats(const char *path, const H5O_info_t *oi, const char *already_visited,
  *-------------------------------------------------------------------------
  */
 static herr_t
-lnk_stats(const char UNUSED *path, const H5L_info_t *li, void *_iter)
+lnk_stats(const char H5_ATTR_UNUSED *path, const H5L_info_t *li, void *_iter)
 {
     iter_t *iter = (iter_t *)_iter;
 
diff --git a/tools/lib/h5tools.c b/tools/lib/h5tools.c
index 10d150f..c820aff 100644
--- a/tools/lib/h5tools.c
+++ b/tools/lib/h5tools.c
@@ -54,9 +54,6 @@ unsigned long long packed_data_mask;  /* mask in which packed bits to display */
 
 /* module-scoped variables */
 static int  h5tools_init_g;     /* if h5tools lib has been initialized */
-#ifdef H5_HAVE_PARALLEL
-static int  h5tools_mpi_init_g; /* if MPI_Init() has been called */
-#endif /* H5_HAVE_PARALLEL */
 
 /* Names of VFDs */
 static const char *drivernames[]={
@@ -516,11 +513,14 @@ h5tools_get_fapl(hid_t fapl, const char *driver, unsigned *drivernum)
     }
 #ifdef H5_HAVE_PARALLEL
     else if(!HDstrcmp(driver, drivernames[MPIO_IDX])) {
+        int mpi_initialized, mpi_finalized;
+
         /* MPI-I/O Driver */
-        /* check if MPI has been initialized. */
-        if(!h5tools_mpi_init_g)
-            MPI_Initialized(&h5tools_mpi_init_g);
-        if(h5tools_mpi_init_g) {
+        /* check if MPI is available. */
+        MPI_Initialized(&mpi_initialized);
+        MPI_Finalized(&mpi_finalized);
+
+        if(mpi_initialized && !mpi_finalized) {
             if(H5Pset_fapl_mpio(new_fapl, MPI_COMM_WORLD, MPI_INFO_NULL) < 0)
                 goto error;
             if(drivernum)
diff --git a/tools/lib/h5tools_ref.c b/tools/lib/h5tools_ref.c
index 52d84f9..0bb7d77 100644
--- a/tools/lib/h5tools_ref.c
+++ b/tools/lib/h5tools_ref.c
@@ -61,7 +61,7 @@ static int ref_path_table_put(const char *, haddr_t objno);
  *-------------------------------------------------------------------------
  */
 static herr_t
-free_ref_path_info(void *item, void UNUSED *key, void UNUSED *operator_data/*in,out*/)
+free_ref_path_info(void *item, void H5_ATTR_UNUSED *key, void H5_ATTR_UNUSED *operator_data/*in,out*/)
 {
     ref_path_node_t *node = (ref_path_node_t *)item;
 
@@ -85,7 +85,7 @@ free_ref_path_info(void *item, void UNUSED *key, void UNUSED *operator_data/*in,
  */
 static herr_t
 init_ref_path_cb(const char *obj_name, const H5O_info_t *oinfo,
-    const char *already_seen, void UNUSED *_udata)
+    const char *already_seen, void H5_ATTR_UNUSED *_udata)
 {
     /* Check if the object is already in the path table */
     if(NULL == already_seen) {
diff --git a/tools/lib/h5tools_utils.h b/tools/lib/h5tools_utils.h
index fd588b9..3285278 100644
--- a/tools/lib/h5tools_utils.h
+++ b/tools/lib/h5tools_utils.h
@@ -124,9 +124,9 @@ H5TOOLS_DLLVAR int     h5tools_nCols;               /*max number of columns for
 /* Definitions of useful routines */
 H5TOOLS_DLL void     indentation(int);
 H5TOOLS_DLL void     print_version(const char *progname);
-H5TOOLS_DLL void     parallel_print(const char* format, ... )__attribute__((format (printf, 1, 2)));
-H5TOOLS_DLL void     error_msg(const char *fmt, ...)__attribute__((format (printf, 1, 2)));
-H5TOOLS_DLL void     warn_msg(const char *fmt, ...)__attribute__((format (printf, 1, 2)));
+H5TOOLS_DLL void     parallel_print(const char* format, ... );
+H5TOOLS_DLL void     error_msg(const char *fmt, ...);
+H5TOOLS_DLL void     warn_msg(const char *fmt, ...);
 H5TOOLS_DLL void     help_ref_msg(FILE *output);
 H5TOOLS_DLL void     free_table(table_t *table);
 #ifdef H5DUMP_DEBUG
diff --git a/tools/lib/h5trav.c b/tools/lib/h5trav.c
index 90e6d3d..86e60c3 100644
--- a/tools/lib/h5trav.c
+++ b/tools/lib/h5trav.c
@@ -404,7 +404,7 @@ trav_fileinfo_add(trav_info_t *info, hid_t loc_id)
  */
 int
 trav_info_visit_obj(const char *path, const H5O_info_t *oinfo,
-    const char UNUSED *already_visited, void *udata)
+    const char H5_ATTR_UNUSED *already_visited, void *udata)
 {
     size_t idx;
     trav_info_t *info_p;
@@ -628,7 +628,7 @@ trav_table_visit_obj(const char *path, const H5O_info_t *oinfo,
  *-------------------------------------------------------------------------
  */
 static int
-trav_table_visit_lnk(const char *path, const H5L_info_t UNUSED *linfo, void *udata)
+trav_table_visit_lnk(const char *path, const H5L_info_t H5_ATTR_UNUSED *linfo, void *udata)
 {
     /* Add the link to the 'table' struct */
     trav_table_add((trav_table_t *)udata, path, NULL);
@@ -901,9 +901,9 @@ void trav_table_free( trav_table_t *table )
 static herr_t
 trav_attr(hid_t
 #ifndef H5TRAV_PRINT_SPACE
-UNUSED
+H5_ATTR_UNUSED
 #endif /* H5TRAV_PRINT_SPACE */
-obj, const char *attr_name, const H5A_info_t UNUSED *ainfo, void *_op_data)
+obj, const char *attr_name, const H5A_info_t H5_ATTR_UNUSED *ainfo, void *_op_data)
 {
     trav_path_op_data_t *op_data = (trav_path_op_data_t *)_op_data;
     const char          *buf = op_data->path;
diff --git a/tools/perform/chunk.c b/tools/perform/chunk.c
index 6825a4c..625809a 100644
--- a/tools/perform/chunk.c
+++ b/tools/perform/chunk.c
@@ -37,9 +37,9 @@
 #if !defined(H5_HAVE_ATTRIBUTE) || defined __cplusplus
 #   undef __attribute__
 #   define __attribute__(X) /*void*/
-#   define UNUSED /*void*/
+#   define H5_ATTR_UNUSED /*void*/
 #else
-#   define UNUSED __attribute__((unused))
+#   define H5_ATTR_UNUSED __attribute__((unused))
 #endif
 
 #define FILE_NAME	"chunk.h5"
@@ -78,7 +78,7 @@ static hid_t	fapl_g = -1;
 
 /* Local function prototypes */
 static size_t
-counter (unsigned UNUSED flags, size_t cd_nelmts,
+counter (unsigned H5_ATTR_UNUSED flags, size_t cd_nelmts,
 	 const unsigned *cd_values, size_t nbytes,
 	 size_t *buf_size, void **buf);
 
@@ -111,9 +111,9 @@ const H5Z_class2_t H5Z_COUNTER[1] = {{
  *-------------------------------------------------------------------------
  */
 static size_t
-counter (unsigned UNUSED flags, size_t UNUSED cd_nelmts,
-	 const unsigned UNUSED *cd_values, size_t nbytes,
-	 size_t UNUSED *buf_size, void UNUSED **buf)
+counter (unsigned H5_ATTR_UNUSED flags, size_t H5_ATTR_UNUSED cd_nelmts,
+	 const unsigned H5_ATTR_UNUSED *cd_values, size_t nbytes,
+	 size_t H5_ATTR_UNUSED *buf_size, void H5_ATTR_UNUSED **buf)
 {
     nio_g += nbytes;
     return nbytes;
diff --git a/tools/perform/overhead.c b/tools/perform/overhead.c
index 046668f..0e9166c 100644
--- a/tools/perform/overhead.c
+++ b/tools/perform/overhead.c
@@ -49,9 +49,9 @@
 #ifndef H5_HAVE_ATTRIBUTE
 #   undef __attribute__
 #   define __attribute__(X) /*void*/
-#   define UNUSED /*void*/
+#   define H5_ATTR_UNUSED /*void*/
 #else
-#   define UNUSED __attribute__((unused))
+#   define H5_ATTR_UNUSED __attribute__((unused))
 #endif
 
 #define FILE_NAME_1  "overhead.h5"
@@ -163,7 +163,7 @@ cleanup (void)
  *-------------------------------------------------------------------------
  */
 static herr_t
-display_error_cb (hid_t estack, void UNUSED *client_data)
+display_error_cb (hid_t estack, void H5_ATTR_UNUSED *client_data)
 {
     puts ("*FAILED*");
     H5Eprint2(estack, stdout);
diff --git a/tools/perform/perf.c b/tools/perform/perf.c
index 1bd33b6..afd13c0 100644
--- a/tools/perform/perf.c
+++ b/tools/perform/perf.c
@@ -473,7 +473,7 @@ parse_args(int argc, char **argv)
 #else /* H5_HAVE_PARALLEL */
 /* dummy program since H5_HAVE_PARALLEL is not configured in */
 int
-main(int UNUSED argc, char UNUSED **argv)
+main(int H5_ATTR_UNUSED argc, char H5_ATTR_UNUSED **argv)
 {
     printf("No parallel performance because parallel is not configured in\n");
     return(0);