In /usr/bin/h5c++.openmpi line 26:
exec_prefix="${prefix}"
^---------^ SC2034: exec_prefix appears unused. Verify use (or export if used externally).


In /usr/bin/h5c++.openmpi line 63:
prog_name="`basename $0`"
           ^-----------^ SC2006: Use $(...) notation instead of legacy backticked `...`.
                     ^-- SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
prog_name="$(basename "$0")"


In /usr/bin/h5c++.openmpi line 145:
  echo " in the 'Things You Can Modify to Override...'" section of $prog_name
                                                                   ^--------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
  echo " in the 'Things You Can Modify to Override...'" section of "$prog_name"


In /usr/bin/h5c++.openmpi line 181:
    if test "`${CXX} -v 2>&1 | sed -n 2p | cut -c1-3`" = "gcc"; then
             ^-- SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
    if test "$(${CXX} -v 2>&1 | sed -n 2p | cut -c1-3)" = "gcc"; then


In /usr/bin/h5c++.openmpi line 193:
for arg in $@ ; do
           ^-- SC2068: Double quote array expansions to avoid re-splitting elements.


In /usr/bin/h5c++.openmpi line 215:
      dash_o="yes"
      ^----^ SC2034: dash_o appears unused. Verify use (or export if used externally).


In /usr/bin/h5c++.openmpi line 236:
      prefix="`expr "$arg" : '-prefix=\(.*\)'`"
              ^-- SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
      prefix="$(expr "$arg" : '-prefix=\(.*\)')"


In /usr/bin/h5c++.openmpi line 258:
      qarg="'"$arg"'"
              ^--^ SC2027: The surrounding quotes actually unquote this. Remove or escape them.


In /usr/bin/h5c++.openmpi line 270:
	    ext=`expr "$arg" : '.*\(\..*\)'`
                ^--------------------------^ SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
	    ext=$(expr "$arg" : '.*\(\..*\)')


In /usr/bin/h5c++.openmpi line 271:
	    if [ "$ext" = ".C" -o "$ext" = ".cxx" -o "$ext" = ".cpp" -o \
                               ^-- SC2166: Prefer [ p ] || [ q ] as [ p -o q ] is not well defined.
                                                  ^-- SC2166: Prefer [ p ] || [ q ] as [ p -o q ] is not well defined.
                                                                     ^-- SC2166: Prefer [ p ] || [ q ] as [ p -o q ] is not well defined.


In /usr/bin/h5c++.openmpi line 272:
		 "$ext" = ".cc" -o "$ext" = ".c" -o "$ext" = ".CC" ] ; then
                                ^-- SC2166: Prefer [ p ] || [ q ] as [ p -o q ] is not well defined.
                                                 ^-- SC2166: Prefer [ p ] || [ q ] as [ p -o q ] is not well defined.


In /usr/bin/h5c++.openmpi line 276:
	        fname=`basename $arg $ext`
                      ^------------------^ SC2006: Use $(...) notation instead of legacy backticked `...`.
                                ^--^ SC2086: Double quote to prevent globbing and word splitting.
                                     ^--^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
	        fname=$(basename "$arg" "$ext")


In /usr/bin/h5c++.openmpi line 305:
  $SHOW $CXX -I$includedir $H5BLD_CPPFLAGS $CPPFLAGS $H5BLD_CXXFLAGS $CXXFLAGS $compile_args
        ^--^ SC2086: Double quote to prevent globbing and word splitting.
                           ^-------------^ SC2086: Double quote to prevent globbing and word splitting.
                                           ^-------^ SC2086: Double quote to prevent globbing and word splitting.
                                                     ^-------------^ SC2086: Double quote to prevent globbing and word splitting.
                                                                     ^-------^ SC2086: Double quote to prevent globbing and word splitting.
                                                                               ^-----------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
  $SHOW "$CXX" -I$includedir "$H5BLD_CPPFLAGS" "$CPPFLAGS" "$H5BLD_CXXFLAGS" "$CXXFLAGS" "$compile_args"


In /usr/bin/h5c++.openmpi line 370:
    if echo $link_args | grep " $lib " > /dev/null ||
            ^--------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
    if echo "$link_args" | grep " $lib " > /dev/null ||


In /usr/bin/h5c++.openmpi line 371:
       echo $link_args | grep " $lib$" > /dev/null; then
            ^--------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
       echo "$link_args" | grep " $lib$" > /dev/null; then


In /usr/bin/h5c++.openmpi line 389:
  $SHOW $CXXLINKER -I$includedir $H5BLD_CPPFLAGS $CPPFLAGS $H5BLD_CXXFLAGS $CXXFLAGS $LDFLAGS $clibpath $link_objs $LIBS $link_args $shared_link
        ^--------^ SC2086: Double quote to prevent globbing and word splitting.
                                 ^-------------^ SC2086: Double quote to prevent globbing and word splitting.
                                                 ^-------^ SC2086: Double quote to prevent globbing and word splitting.
                                                           ^-------------^ SC2086: Double quote to prevent globbing and word splitting.
                                                                           ^-------^ SC2086: Double quote to prevent globbing and word splitting.
                                                                                     ^------^ SC2086: Double quote to prevent globbing and word splitting.
                                                                                              ^-------^ SC2086: Double quote to prevent globbing and word splitting.
                                                                                                        ^--------^ SC2086: Double quote to prevent globbing and word splitting.
                                                                                                                   ^---^ SC2086: Double quote to prevent globbing and word splitting.
                                                                                                                         ^--------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
  $SHOW "$CXXLINKER" -I$includedir "$H5BLD_CPPFLAGS" "$CPPFLAGS" "$H5BLD_CXXFLAGS" "$CXXFLAGS" "$LDFLAGS" "$clibpath" "$link_objs" "$LIBS" "$link_args" $shared_link

For more information:
  https://www.shellcheck.net/wiki/SC2068 -- Double quote array expansions to ...
  https://www.shellcheck.net/wiki/SC2027 -- The surrounding quotes actually u...
  https://www.shellcheck.net/wiki/SC2034 -- dash_o appears unused. Verify use...