# old cmake does not have ExternalProject file
IF(CMAKE_VERSION VERSION_LESS "2.8.6")
  MACRO (MYSQL_CHECK_JEMALLOC)
  ENDMACRO()
  RETURN()
ENDIF()

INCLUDE(ExternalProject)

MACRO (USE_BUNDLED_JEMALLOC)
  SET(SOURCE_DIR "${CMAKE_SOURCE_DIR}/extra/jemalloc")
  SET(BINARY_DIR ${SOURCE_DIR})
  SET(LIBJEMALLOC "libjemalloc")
  IF(WITH_ASAN)
    SET(JEMALLOC_CONFIGURE_OPTS "CC=${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1} --with-private-namespace=jemalloc_internal_  --enable-cc-silence")
  ELSE()
    SET(JEMALLOC_CONFIGURE_OPTS "CC=${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1} --with-private-namespace=jemalloc_internal_  --enable-cc-silence --enable-prof")
  ENDIF()
  SET(JEMALLOC_CONFIGURE_OPTS "${JEMALLOC_CONFIGURE_OPTS} --with-malloc-conf=background_thread:true")
  IF (CMAKE_BUILD_TYPE MATCHES "Debug" AND NOT APPLE) # see the comment in CMakeLists.txt
    SET(JEMALLOC_CONFIGURE_OPTS "${JEMALLOC_CONFIGURE_OPTS} --enable-debug") # 
  ENDIF()

  MESSAGE(STATUS "USE JEMALLOC_CONFIGURE_OPTS ${JEMALLOC_CONFIGURE_OPTS}")

  IF(CMAKE_GENERATOR MATCHES "Makefiles")
    SET(MAKE_COMMAND ${CMAKE_MAKE_PROGRAM})
  ELSE() # Xcode/Ninja generators
    SET(MAKE_COMMAND make)
  ENDIF()

  ExternalProject_Add(jemalloc
    PREFIX extra/jemalloc
    SOURCE_DIR ${SOURCE_DIR}
    BINARY_DIR ${BINARY_DIR}
    STAMP_DIR  ${BINARY_DIR}
    CONFIGURE_COMMAND ""
    BUILD_COMMAND  ${MAKE_COMMAND} "build_lib_static"
    INSTALL_COMMAND ""
  )
  EXECUTE_PROCESS(COMMAND ./autogen.sh ${JEMALLOC_CONFIGURE_OPTS}
    WORKING_DIRECTORY ${SOURCE_DIR}
  )
  MESSAGE(STATUS "USE SOURCE_DIR ${SOURCE_DIR}")
  MESSAGE(STATUS "USE BINARY_DIR ${BINARY_DIR}")
  INCLUDE_DIRECTORIES(BEFORE SYSTEM  ${SOURCE_DIR}/include)
  ADD_LIBRARY(libjemalloc STATIC IMPORTED)
  SET_TARGET_PROPERTIES(libjemalloc PROPERTIES IMPORTED_LOCATION "${BINARY_DIR}/lib/libjemalloc_pic.a")
  ADD_DEPENDENCIES(libjemalloc jemalloc)
ENDMACRO()

IF(CMAKE_SYSTEM_NAME MATCHES "Linux" OR APPLE)
 # Linux and OSX are the only systems where bundled jemalloc can be built without problems,
 # as they both have GNU make and jemalloc actually compiles.
 # Also, BSDs use jemalloc as malloc already
 SET(WITH_JEMALLOC_DEFAULT "bundled")
ELSE()
 SET(WITH_JEMALLOC_DEFAULT "no")
ENDIF()

SET(WITH_JEMALLOC ${WITH_JEMALLOC_DEFAULT} CACHE STRING
    "Which jemalloc to use. Possible values are 'no', 'bundled', 'system', 'yes' (system if possible, otherwise bundled)")

MACRO (MYSQL_CHECK_JEMALLOC)
  IF(NOT WITH_JEMALLOC)
    SET(WITH_JEMALLOC ${WITH_JEMALLOC_DEFAULT} CACHE STRING
      "Which jemalloc to use. Possible values are 'no', 'bundled', 'system', 'yes' (system if possible, otherwise bundled)")
  ENDIF()


  IF(WITH_JEMALLOC STREQUAL "system" OR WITH_JEMALLOC STREQUAL "yes")
    CHECK_LIBRARY_EXISTS(jemalloc malloc_stats_print "" HAVE_JEMALLOC)
    IF (HAVE_JEMALLOC)
      SET(LIBJEMALLOC jemalloc)
      SET(MALLOC_LIBRARY "system jemalloc")
    ELSEIF (WITH_JEMALLOC STREQUAL "system")
      MESSAGE(FATAL_ERROR "system jemalloc is not found")
    ELSEIF (WITH_JEMALLOC STREQUAL "yes")
      SET(trybundled 1)
    ENDIF()
  ENDIF()
  IF(WITH_JEMALLOC STREQUAL "bundled" OR trybundled)
    USE_BUNDLED_JEMALLOC()
    SET(MALLOC_LIBRARY "bundled jemalloc")
    IF(WITH_ASAN)
      SET(RDS_HAVE_JEMALLOC 0)
    ELSE()
      SET(RDS_HAVE_JEMALLOC 1)
    ENDIF()
  ENDIF()
ENDMACRO()