diff --unified --recursive --text Alien-HDF4-0.06.orig/Makefile.PL Alien-HDF4-0.06.new/Makefile.PL
--- Alien-HDF4-0.06.orig/Makefile.PL	2019-04-27 12:18:12.000000000 +1000
+++ Alien-HDF4-0.06.new/Makefile.PL	2024-02-14 13:35:23.635563187 +1100
@@ -7,7 +7,7 @@
 
 my ($libpath, $libs) = findlibs();
 die <<EOF unless defined $libpath;
-Cannot find hdf library, libdf.a.
+Cannot find hdf library, libdf.$Config{so}.
 Please add the correct library path to Makefile.PL or install HDF
 EOF
 
diff --unified --recursive --text Alien-HDF4-0.06.orig/common.pl Alien-HDF4-0.06.new/common.pl
--- Alien-HDF4-0.06.orig/common.pl	2023-01-28 07:23:33.000000000 +1100
+++ Alien-HDF4-0.06.new/common.pl	2024-02-14 13:35:43.599172154 +1100
@@ -38,13 +38,13 @@
     foreach my $libdir ( @HDF_lib_locations ) {
         return (
             $libdir, '-lmfhdfalt -ldfalt',
-        ) if -e "$libdir/libdfalt.a";
+        ) if -e "$libdir/libdfalt.$Config{so}";
         return (
             $libdir, '-lmfhdf -ldf',
-        ) if -e "$libdir/libdf.a";
+        ) if -e "$libdir/libdf.$Config{so}";
         return (
             $libdir, '-lmfhdf -lhdf -lxdr',
-        ) if -e "$libdir/libhdf.a";
+        ) if -e "$libdir/libhdf.$Config{so}";
     }
     return;
 }