Add a script to detect new/deleted C/C++ source files.

.gitignore

@@ -49,3 +49,4 @@ GPATH
 GRTAGS
 GTAGS
 compile_commands.json
+source-checksum

mythtv/programs/scripts/sourcechanged.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+while [[ ! -e ".git" ]] ; do
+    cd ..
+    if [[ `pwd` == "/" ]] ; then
+        echo "fail."
+        exit
+    fi
+done
+
+CHECKSUM=`find . -name \*.cpp -o -name \*.c -o -name \*.h | md5sum | cut -b -32`
+
+if [[ ! -e "compile_commands.json" ]] ; then
+    echo $CHECKSUM > "source-checksum"
+    echo "new"
+    exit
+fi
+
+if [[ ! -e "source-checksum" ]] ; then
+    echo $CHECKSUM > "source-checksum"
+    echo "new2"
+    exit
+fi
+
+line=$(head -n 1 "source-checksum")
+if [[ $line != $CHECKSUM ]]; then
+    echo $CHECKSUM > "source-checksum"
+    echo "changed"
+else
+    echo "ok"
+fi
+