Work on posix.

src/firmware/posix/CMakeLists.txt

@@ -5,6 +5,11 @@ set(module_list)
 px4_posix_add_modules(module_dir_list ${BOARD})
 message(STATUS "module list: ${module_dir_list}")
 
+include_directories(${CMAKE_CURRENT_BINARY_DIR})
+
+add_custom_command(OUTPUT apps.h
+	COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/Tools/posix_apps.py > apps.h)
+
 foreach(directory ${module_dir_list})
 	message(STATUS "directory: ${directory}")
 	px4_mangle_name(${directory} mangled_name)
@@ -15,7 +20,17 @@ px4_posix_generate_builtin_commands(
 	OUT builtin_commands.cpp
 	MODULE_LIST ${module_list})
 
-add_executable(mainapp builtin_commands.cpp)
+add_executable(mainapp
+	${CMAKE_SOURCE_DIR}/src/platforms/posix/main.cpp
+	apps.h
+	builtin_commands.cpp)
+
+set(main_link_flags
+	"-T${CMAKE_SOURCE_DIR}/cmake/posix/ld.script"
+	)
+px4_join(OUT main_link_flags LIST ${main_link_flags} GLUE " ")
+set_target_properties(mainapp PROPERTIES LINK_FLAGS ${main_link_flags})
+
 target_link_libraries(mainapp
 	-Wl,--start-group
 	${module_list}