1if (CMAKE_SYSTEM_NAME MATCHES "Linux")
2  add_subdirectory(Linux)
3  add_subdirectory(POSIX)
4  add_subdirectory(elf-core)
5elseif (CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
6  add_subdirectory(FreeBSD)
7  add_subdirectory(POSIX)
8  add_subdirectory(elf-core)
9elseif (CMAKE_SYSTEM_NAME MATCHES "Darwin")
10  add_subdirectory(MacOSX-Kernel)
11endif()
12add_subdirectory(gdb-remote)
13add_subdirectory(Utility)
14add_subdirectory(mach-core)
15