diff --git a/extensions/app_sip/CMakeLists.txt b/extensions/app_sip/CMakeLists.txt
new file mode 100644
index 0000000..8bd89d1
--- /dev/null
+++ b/extensions/app_sip/CMakeLists.txt
@@ -0,0 +1,47 @@
+# The app_sip extension
+PROJECT("Diameter SIP Application (RFC4740)" C)
+
+FIND_PACKAGE(MySQL REQUIRED)
+INCLUDE_DIRECTORIES(${MySQL_INCLUDE_DIR}) 
+
+# Parser files
+BISON_FILE(app_sip.y)
+FLEX_FILE(app_sip.l)
+SET_SOURCE_FILES_PROPERTIES(lex.app_sip.c app_sip.tab.c PROPERTIES COMPILE_FLAGS "-I ${CMAKE_CURRENT_SOURCE_DIR}")
+
+# List of source files
+SET( DIAM_SIP_SRC
+	lex.app_sip.c
+	app_sip.tab.c
+	app_sip.tab.h
+	app_sip.c
+	app_sip.h
+	libapp_sip.c
+	md5.c
+	multimediaauth.c
+	registrationtermination.c
+	userauthorization.c
+	pushprofile.c
+	serverassignment.c
+	locationinfo.c
+	locationinfosl.c
+)
+
+# Compile as a module
+FD_ADD_EXTENSION(app_sip ${DIAM_SIP_SRC})
+
+TARGET_LINK_LIBRARIES(app_sip ${MySQL_LIBRARIES})
+
+SUBDIRS(tools)
+
+####
+## INSTALL section ##
+
+INSTALL(TARGETS app_sip
+	LIBRARY DESTINATION ${INSTALL_EXTENSIONS_SUFFIX}
+	COMPONENT freeDiameter-sip-server)
+
+INSTALL(FILES README TODO
+	DESTINATION /usr/share/doc/freeDiameter-sip-server
+	CONFIGURATIONS DebianPackage 
+	COMPONENT freeDiameter-sip-server)