-#packaging
-SET(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/COPYING")
-SET(CPACK_RESOURCE_FILE_README "${PROJECT_SOURCE_DIR}/README")
-SET(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Simulation support libraries for FlightGear and related projects")
-SET(CPACK_PACKAGE_VENDOR "The FlightGear project")
-SET(CPACK_GENERATOR "TBZ2")
-SET(CPACK_INSTALL_CMAKE_PROJECTS ${CMAKE_CURRENT_BINARY_DIR};SimGear;ALL;/)
-
-
-# split version string into components, note CMAKE_MATCH_0 is the entire regexp match
-string(REGEX MATCH "([0-9]+)\\.([0-9]+)\\.([0-9]+)" CPACK_PACKAGE_VERSION ${SIMGEAR_VERSION} )
-set(CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1})
-set(CPACK_PACKAGE_VERSION_MINOR ${CMAKE_MATCH_2})
-set(CPACK_PACKAGE_VERSION_PATCH ${CMAKE_MATCH_3})
-
-message(STATUS "version is ${CPACK_PACKAGE_VERSION_MAJOR} dot ${CPACK_PACKAGE_VERSION_MINOR} dot ${CPACK_PACKAGE_VERSION_PATCH}")
-
-set(CPACK_SOURCE_GENERATOR TBZ2)
-set(CPACK_SOURCE_PACKAGE_FILE_NAME "simgear-${SIMGEAR_VERSION}" CACHE INTERNAL "tarball basename")
-set(CPACK_SOURCE_IGNORE_FILES
- "^${PROJECT_SOURCE_DIR}/.git;\\\\.gitignore;Makefile.am;~$;${CPACK_SOURCE_IGNORE_FILES}")
-
-message(STATUS "ignoring: ${CPACK_SOURCE_IGNORE_FILES}")
-
-include (CPack)
+# Warning when build is not an out-of-source build.
+string(COMPARE EQUAL "${CMAKE_SOURCE_DIR}" "${CMAKE_BINARY_DIR}" InSourceBuild)
+if(InSourceBuild)
+ message(WARNING "Avoid building inside the source tree!")
+ message(WARNING "Create a separate build directory instead (i.e. 'sgbuild') and call CMake from there: ")
+ message(WARNING " mkdir ../sgbuild && cd ../sgbuild && cmake ${CMAKE_SOURCE_DIR}")
+endif(InSourceBuild)
+
+if (NOT EMBEDDED_SIMGEAR)
+ #packaging
+ SET(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/COPYING")
+ SET(CPACK_RESOURCE_FILE_README "${PROJECT_SOURCE_DIR}/README")
+ SET(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Simulation support libraries for FlightGear and related projects")
+ SET(CPACK_PACKAGE_VENDOR "The FlightGear project")
+ SET(CPACK_GENERATOR "TBZ2")
+ SET(CPACK_INSTALL_CMAKE_PROJECTS ${CMAKE_CURRENT_BINARY_DIR};SimGear;ALL;/)
+
+
+ # split version string into components, note CMAKE_MATCH_0 is the entire regexp match
+ string(REGEX MATCH "([0-9]+)\\.([0-9]+)\\.([0-9]+)" CPACK_PACKAGE_VERSION ${SIMGEAR_VERSION} )
+ set(CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1})
+ set(CPACK_PACKAGE_VERSION_MINOR ${CMAKE_MATCH_2})
+ set(CPACK_PACKAGE_VERSION_PATCH ${CMAKE_MATCH_3})
+
+ message(STATUS "version is ${CPACK_PACKAGE_VERSION_MAJOR} dot ${CPACK_PACKAGE_VERSION_MINOR} dot ${CPACK_PACKAGE_VERSION_PATCH}")
+
+ set(CPACK_SOURCE_GENERATOR TBZ2)
+ set(CPACK_SOURCE_PACKAGE_FILE_NAME "simgear-${SIMGEAR_VERSION}" CACHE INTERNAL "tarball basename")
+ set(CPACK_SOURCE_IGNORE_FILES
+ "^${PROJECT_SOURCE_DIR}/.git;\\\\.gitignore;Makefile.am;~$;${CPACK_SOURCE_IGNORE_FILES}")
+
+ message(STATUS "ignoring: ${CPACK_SOURCE_IGNORE_FILES}")
+
+ include (CPack)
+endif()