Minor fixes to build system.

skel/src/cppapp/build.app

@@ -15,7 +15,7 @@ then
     MODIFIED=0
     for test in ${MONOLITHIC_TESTS} ${HDR} ${SRC}
     do
-        if [ ${test} -nt ${CPPAPP} ]
+        if [ ${test} -nt ${APP} ]
         then
             MODIFIED=1
             break

skel/src/tests/build.tests

@@ -14,7 +14,14 @@ then
     do
         TEST="obj/tests/$(basename ${SRC} | sed -e 's,.cpp$,,')"
 	MODIFIED=0
-	[ ${LIBOPT} -nt ${TEST} -o ${SRC} -nt ${TEST} ] && MODIFIED=1
+	for file in ${LIBCPP} ${SRC}
+	do
+	    if [ ${file} -nt ${TEST} ]
+	    then
+	        MODIFIED=1
+		break
+	    fi
+	done
 
 	if [ ${MODIFIED} -ne 0 ]
 	then