diff --git a/meta/classes/archive.bbclass b/meta/classes/archive.bbclass
new file mode 100644
index 0000000..e529793
--- /dev/null
+++ b/meta/classes/archive.bbclass
@@ -0,0 +1,49 @@
+# Archive the patched sources and build scripts to assist in license
+# compliance by the end user or legal departments.
+
+ARCHIVE_DIR = "${TMPDIR}/archives/${MULTIMACH_TARGET_SYS}/"
+do_archive[dirs] = "${ARCHIVE_DIR}"
+
+archive_do_archive() {
+    # In mostly scenarios the $S is under $WORKDIR and has a separate
+    # dir for storing the sources; but sometimes we also put the same
+    # sources 'tmp/work-shared/' for sharing between different build.
+    if [ -d ${S} -a ${S} != ${WORKDIR} ]; then
+        sources_shared="0"
+
+        if echo ${S} | grep "${TMPDIR}/work-shared" > /dev/null; then
+            sources_shared="1"
+        fi
+
+        if [ x$sources_shared == "x1" ]; then
+            # Create temporary sources directory
+            mkdir -p ${PF}/temp
+            cp -r ${S} ${PF}
+            cp -r ${S}/../temp/* ${PF}/temp
+            cp -r ${WORKDIR}/temp/* ${PF}/temp
+            tarbase=`pwd`
+            sourcedir=`basename ${S}`
+        else
+            tarbase=`dirname ${WORKDIR}`
+            sourcedir=`echo ${S}|sed -e "s#${WORKDIR}/*##g"`
+        fi
+
+        tar -C $tarbase -cjf ${PF}.tar.bz2 ${PF}/$sourcedir \
+            ${PF}/temp --exclude log.do_*
+
+        # Remove the temporary sources directory
+        if [ x$sources_shared == "x1" -a -d ${PF} ]; then
+            rm -rf ${PF}
+        fi
+    fi
+
+    # Just archive whole build directory up when $S is equal to $WORKDIR
+    if [ -d ${S} -a ${S} == ${WORKDIR} ]; then
+        tarbase=`dirname ${WORKDIR}`
+        tar -C $tarbase -cjf ${PF}.tar.bz2 ${PF} --exclude log.do_*
+    fi
+}
+
+addtask do_archive after do_patch before do_configure
+
+EXPORT_FUNCTIONS do_archive