Index: dap4_test/test_meta.sh
--- dap4_test/test_meta.sh.orig
+++ dap4_test/test_meta.sh
@@ -34,8 +34,8 @@ for f in ${F} ; do
     fi
     ${NCDUMP} ${DUMPFLAGS} -h ./results_test_meta/${f} > ./results_test_meta/${f}.d4m
     if test "x${TEST}" = x1 ; then
-	if ! diff -wBb ${BASELINE}/${f}.d4m ./results_test_meta/${f}.d4m ; then
-	    failure "diff -wBb ${BASELINE}/${f}.ncdump ./results_test_meta/${f}.d4m"
+	if ! gdiff -wBb ${BASELINE}/${f}.d4m ./results_test_meta/${f}.d4m ; then
+	    failure "gdiff -wBb ${BASELINE}/${f}.ncdump ./results_test_meta/${f}.d4m"
 	fi
     elif test "x${RESET}" = x1 ; then
 	echo "${f}:" 
@@ -45,12 +45,12 @@ done
 
 if test "x${CDLDIFF}" = x1 ; then
   for f in $CDL ; do
-    echo "diff -wBb ${CDLTESTFILES}/${f}.cdl ./results_test_meta/${f}.d4m"
+    echo "gdiff -wBb ${CDLTESTFILES}/${f}.cdl ./results_test_meta/${f}.d4m"
     rm -f ./tmp
     cat ${CDLTESTFILES}/${f}.cdl \
     cat >./tmp
-    echo diff -wBbu ./tmp ./results_test_meta/${f}.d4m
-    if ! diff -wBbu ./tmp ./results_test_meta/${f}.d4m ; then
+    echo gdiff -wBbu ./tmp ./results_test_meta/${f}.d4m
+    if ! gdiff -wBbu ./tmp ./results_test_meta/${f}.d4m ; then
 	failure "${f}" 
     fi
   done