diff --git a/build/cmake/gen-html.sh b/build/cmake/gen-html.sh
new file mode 100755
index 0000000..a2b2c99
--- /dev/null
+++ b/build/cmake/gen-html.sh
@@ -0,0 +1,139 @@
+#!/bin/sh
+#< gen-html.sh 2021/03/26, from gen-html.bat
+BN=`basename $0`
+
+ask()
+{
+	pause
+	if [ ! "$?" = "0" ]; then
+		exit 1
+	fi
+}
+
+# @REM Build HTML from log of 'version.txt'
+# @REM Versify the tools used
+echo "$BN: Doing: 'verhist -? >/dev/null'"
+verhist -? >/dev/null
+if [ ! "$?" = "0" ]; then
+    echo "Unable to run 'verhist.pl'! *** FIX ME ***"
+    exit 1
+fi
+echo "$BN: Doing: 'emailobfuscate -? >/dev/null'"
+emailobfuscate -? >/dev/null
+if [ ! "$?" = "0" ]; then
+    echo "Unable to run 'emailobfuscate.pl'! *** FIX ME ***"
+    exit 1
+fi
+
+TMPFIL1="../../version.txt"
+if [ ! -f "$TMPFIL1" ]; then
+    echo "Can NOT locate $TMPFIL1, in $(pwd) - *** FIX ME ***"
+    exit 1
+fi
+
+echo "$BN: Doing: 'dirmin $TMPFIL1'"
+ls -l "$TMPFIL1"
+
+# TMPVER=$(cat $TMPFIL1)
+TMPCNT=0
+while read -r a; do
+	TMPCNT=`expr $TMPCNT + 1`;
+	if [ ! -z "$a" ]; then
+		echo "$TMPCNT: '$a'"
+		if [ "$TMPCNT" = "1" ]; then
+			export TMPVER="$a";
+		fi
+		break;
+	fi
+done < $TMPFIL1
+
+echo "Current version '$TMPVER' ..."
+TMPLOG1="../../../temp-$TMPVER.log"
+TMPLOG2="../../../temp2-$TMPVER.log"
+TMPLOG3="../../../temp3-$TMPVER.log"
+
+if [ ! -f "$TMPLOG1" ]; then
+echo "$BN: Doing: 'git log -p $TMPFIL1 > $TMPLOG1'"
+git log -p $TMPFIL1 > $TMPLOG1
+if [ ! -f "$TMPLOG1" ]; then
+echo "Gen of $TMPLOG1 FAILED! *** FIX ME ***"
+exit 1
+fi
+fi
+
+echo "$BN: Got log 1 '$TMPLOG1' ..."
+ls -l "$TMPLOG1"
+
+if [ ! -f "$TMPLOG2" ]; then
+echo "$BN: Doing: 'verhist $TMPLOG1 -o $TMPLOG2'"
+verhist $TMPLOG1 -o $TMPLOG2
+if [ ! -f "$TMPLOG2" ]; then
+echo "Gen of $TMPLOG2 FAILED! *** FIX ME ***"
+exit 1
+fi
+fi
+
+echo "$BN: Got log 2 '$TMPLOG2' ..."
+ls -l $TMPLOG2
+
+TMPV="$1"
+if [ -z "$TMPV" ]; then
+echo "Give the cut-off version, like 5.6.0, to continue.."
+exit 1
+fi
+
+echo "$BN: Doing: 'grep $TMPV $TMPLOG2'"
+grep $TMPV $TMPLOG2
+if [ ! "$?" = "0" ]; then
+echo "Failed to find '$TMPV'... check the file '$TMPLOG2'"
+exit 1
+fi
+
+TMPD="$2"
+if [ -z "$TMPD" ]; then
+echo "Give the DATE of the cut-off, like 'Sat Nov 25 14:50:00 2017 +0100', to continue..."
+exit 1
+fi
+
+if [ ! -f "$TMPLOG3" ]; then
+echo "$BN: Doing: 'git log "--decorate=full" "--since=$TMPD" > $TMPLOG3'"
+git log "--decorate=full" "--since=$TMPD" > $TMPLOG3
+if [ ! -f "$TMPLOG3" ]; then
+echo "Failed to generate 'git log ...' - *** FIX ME ***"
+exit 1
+fi
+fi
+
+echo "$BN: Got log 3 '$TMPLOG3' ..."
+ls -l "$TMPLOG3"
+
+# @REM at last generate the release HTML
+
+TMPHTM="../../../temp-$TMPVER.html"
+if [ ! -f "$TMPHTM" ]; then
+echo "$BN: Doing: 'emailobfuscate $TMPLOG3 -o $TMPHTM -a $TMPVER -i'"
+emailobfuscate $TMPLOG3 -o $TMPHTM -a $TMPVER -i
+if [ ! -f "$TMPHTM" ]; then
+echo "FAILED to generate $TMPHTM! *** FIX ME ***"
+exit 1
+fi
+fi
+
+echo "$BN: Got HTML file '$TMPHTM' ..."
+ls -l "$TMPHTM"
+
+echo "$BN: Generation appears ok, check file '$TMPHTM' in browser..."
+### start $TMPHTM
+TMPVFIL="../../README/verhist.log"
+if [ ! -f "$TMPVFIL" ]; then
+    echo ""
+    echo "$BN: *** WARNING *** - Missing existing '$TMPVFIL'"
+    echo ""
+fi
+echo ""
+echo "$BN: Is all OK, final actions, for release are -"
+echo "copy $TMPLOG2 to $TMPVFIL - push this to repo..."
+echo "copy $TMPHTM to the binaries repo..."
+echo ""
+
+# @REM eof