set(METHODS null)
set(METHOD_COMMON FALSE)

if(WITH_METHOD_XSALSA20_POLY1305)
  list(APPEND METHODS xsalsa20_poly1305)
  set(METHOD_COMMON TRUE)
endif(WITH_METHOD_XSALSA20_POLY1305)

if(WITH_METHOD_AES128_GCM)
  list(APPEND METHODS aes128_gcm)
  set(METHOD_COMMON TRUE)
endif(WITH_METHOD_AES128_GCM)


set(METHOD_SOURCES "")

foreach(method ${METHODS})
  add_subdirectory(${method})
  list(APPEND METHOD_SOURCES $<TARGET_OBJECTS:method_${method}>)
endforeach(method)

if(METHOD_COMMON)
  list(APPEND METHOD_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/common.c)
endif(METHOD_COMMON)

set(METHOD_SOURCES "${METHOD_SOURCES}" PARENT_SCOPE)