set(ARCH_DEFINES -D_LINUX -DTARGET_POSIX -DTARGET_FREEBSD)
set(SYSTEM_DEFINES -D__STDC_CONSTANT_MACROS -D_LARGEFILE64_SOURCE
                   -D_FILE_OFFSET_BITS=64)
set(PLATFORM_DIR linux)
set(SYSTEM_LDFLAGS -L/usr/local/lib)
if(WITH_ARCH)
  set(ARCH ${WITH_ARCH})
else()
  if(CMAKE_SYSTEM_PROCESSOR STREQUAL amd64)
    set(ARCH x86_64-freebsd)
  elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "i.86")
    set(ARCH x86-freebsd)
  else()
    message(WARNING "unknown CPU: ${CPU}")
  endif()
endif()