add_subdirectory(common)
if (CMAKE_SYSTEM_NAME MATCHES "Darwin")
add_subdirectory(macosx)
elseif (CMAKE_SYSTEM_NAME MATCHES "Linux")
add_subdirectory(linux)
elseif (CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
add_subdirectory(freebsd)
#elseif (CMAKE_SYSTEM_NAME MATCHES "Windows")
# add_subdirectory(windows)
endif()