Create two subdirectories.
One will contain the main jingle module
and the other the file transfert app.
add_library(jingle MODULE jingle.c check.c register.c)
set_target_properties(jingle PROPERTIES COMPILE_FLAGS "-Wall")
include_directories(${LM_INCLUDE_DIRS})
target_link_libraries(jingle ${LM_LIBRARIES})
install(TARGETS jingle DESTINATION lib/mcabber)