Index: dap4_test/test_raw.sh
--- dap4_test/test_raw.sh.orig
+++ dap4_test/test_raw.sh
@@ -52,8 +52,8 @@ for f in $F ; do
         failure "${URL}"
     fi
     if test "x${TEST}" = x1 ; then
-	if ! diff -wBb ${BASELINERAW}/${f}.dmp ${builddir}/results_test_raw/${f}.dmp ; then
-	    failure "diff ${f}.dmp"
+	if ! gdiff -wBb ${BASELINERAW}/${f}.dmp ${builddir}/results_test_raw/${f}.dmp ; then
+	    failure "gdiff ${f}.dmp"
 	fi
     elif test "x${RESET}" = x1 ; then
 	echo "${f}:"
@@ -61,8 +61,8 @@ for f in $F ; do
     elif test "x${DIFF}" = x1 ; then
 	echo "hdrtest: ${f}"
 	baseclean
-        if ! diff -wBb ${BASELINERAW}/${f}.dmp ${BASELINE}/${f}.ncdump ; then
-          failure diff -wBb ${BASELINERAW}/${f}.dmp ${BASELINE}/${f}.ncdump
+        if ! gdiff -wBb ${BASELINERAW}/${f}.dmp ${BASELINE}/${f}.ncdump ; then
+          failure gdiff -wBb ${BASELINERAW}/${f}.dmp ${BASELINE}/${f}.ncdump
 	fi
     fi
 done