diff -ru a/configure b/configure
--- a/configure	2021-11-15 13:13:34.000000000 -0600
+++ b/configure	2021-12-07 15:08:23.118115118 -0600
@@ -3673,43 +3673,15 @@
         with_hdf5="no"
         with_hdf5_fortran="no"
     else
-                HDF5_SHOW=$(eval $H5CC -show)
 
-                HDF5_CC=$(eval $H5CC -show | $AWK '{print $1}')
-        if test "$HDF5_CC" = "ccache"; then
-            HDF5_CC=$(eval $H5CC -show | $AWK '{print $2}')
-        fi
-
-
-                HDF5_VERSION=$(eval $H5CC -showconfig | $GREP 'HDF5 Version:' \
-            | $AWK '{print $3}')
+                HDF5_VERSION=$(eval pkg-config --modversion hdf5)
         HDF5_MAJOR_VERSION=$(echo $HDF5_VERSION | $AWK -F \. '{print $1}')
         HDF5_MINOR_VERSION=$(echo $HDF5_VERSION | $AWK -F \. {'print $2'})
         HDF5_REVISION_VERSION=$(echo $HDF5_VERSION | $AWK -F \. {'print $3'})
 
-                                                                                HDF5_tmp_flags=$(eval $H5CC -showconfig \
-            | $GREP 'FLAGS\|Extra libraries:' \
-            | $AWK -F: '{printf("%s "), $2}' )
-
-                HDF5_tmp_inst=$(eval $H5CC -showconfig \
-            | $GREP 'Installation point:' \
-            | $AWK '{print $NF}' )
-
-                HDF5_CPPFLAGS="-I${HDF5_tmp_inst}/include"
-
-                for arg in $HDF5_SHOW $HDF5_tmp_flags ; do
-          case "$arg" in
-            -I*) echo $HDF5_CPPFLAGS | $GREP -e "$arg" 2>&1 >/dev/null \
-                  || HDF5_CPPFLAGS="$arg $HDF5_CPPFLAGS"
-              ;;
-            -L*) echo $HDF5_LDFLAGS | $GREP -e "$arg" 2>&1 >/dev/null \
-                  || HDF5_LDFLAGS="$arg $HDF5_LDFLAGS"
-              ;;
-            -l*) echo $HDF5_LIBS | $GREP -e "$arg" 2>&1 >/dev/null \
-                  || HDF5_LIBS="$arg $HDF5_LIBS"
-              ;;
-          esac
-        done
+
+                HDF5_CPPFLAGS=$(eval pkg-config --cflags hdf5)
+                HDF5_LDFLAGS=$(eval pkg-config --libs hdf5)
 
         HDF5_LIBS="$HDF5_LIBS -lhdf5"
         { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes (version $HDF5_VERSION)" >&5
@@ -3725,7 +3697,6 @@
         ax_lib_hdf5_save_CPPFLAGS=$CPPFLAGS
         ax_lib_hdf5_save_LIBS=$LIBS
         ax_lib_hdf5_save_LDFLAGS=$LDFLAGS
-        CC=$HDF5_CC
         CPPFLAGS=$HDF5_CPPFLAGS
         LIBS=$HDF5_LIBS
         LDFLAGS=$HDF5_LDFLAGS
@@ -3893,20 +3864,6 @@
             with_hdf5_fortran="yes"
 
 
-                        for arg in `$H5FC -show`
-            do
-              case "$arg" in #(
-                -I*) echo $HDF5_FFLAGS | $GREP -e "$arg" >/dev/null \
-                      || HDF5_FFLAGS="$arg $HDF5_FFLAGS"
-                  ;;#(
-                -L*) echo $HDF5_FFLAGS | $GREP -e "$arg" >/dev/null \
-                      || HDF5_FFLAGS="$arg $HDF5_FFLAGS"
-                                                               echo $HDF5_FFLAGS | $GREP -e "-I${arg#-L}" >/dev/null \
-                      || HDF5_FFLAGS="-I${arg#-L} $HDF5_FFLAGS"
-                  ;;
-              esac
-            done
-
                         for arg in $HDF5_LIBS
             do
               case "$arg" in #(
@@ -4384,8 +4341,6 @@
     as_fn_error $? "${GREP} does not support option -o" "$LINENO" 5
   fi
 
-  LIBS=`${H5CC} -show | ${GREP} -o " \-[lL][^[:space:]]\+" | tr "\n" " "`
-
 
     HDF5R_LIBS="${LIBS} -L. -lhdf5_hl -lhdf5 -lz -lm"
 
@@ -4447,8 +4402,6 @@
 
 
 
-  HDF5R_CPPFLAGS=`${H5CC} -show -c myconftest.c | ${GREP} -o "\-I[^[:space:]]\+" | tr "\n" " "`
-
   rm -f myconftest.c
 fi