# -*- indent-tabs-mode: nil -*-
#
# Copyright(C) 2012-2015 Kouhei Sutou <kou@clear-code.com>
# Copyright(C) 2013 Kentoku SHIBA
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1335  USA

cmake_minimum_required(VERSION 2.8.12)
project(mroonga)

if("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
  set(MRN_BUNDLED FALSE)
else()
  set(MRN_BUNDLED TRUE)
endif()

include(TestBigEndian)
test_big_endian(BIG_ENDIAN)
if(BIG_ENDIAN)
  set(MRN_BIG_ENDIAN_NOT_SUPPORTED_MESSAGE
    "Mroonga doesn't support on big-endian")
  if(MRN_BUNDLED)
    message(STATUS ${MRN_BIG_ENDIAN_NOT_SUPPORTED_MESSAGE})
    return()
  else()
    message(FATAL_ERROR ${MRN_BIG_ENDIAN_NOT_SUPPORTED_MESSAGE})
  endif()
endif()

if(MSVC)
  if(MSVC_VERSION LESS 1800)
    set(MRN_OLD_MSVC_MESSAGE "Mroonga supports only MSVC 2013 or later")
    if(MRN_BUNDLED)
      message(STATUS ${MRN_OLD_MSVC_MESSAGE})
      return()
    else()
      message(FATAL_ERROR ${MRN_OLD_MSVC_MESSAGE})
    endif()
  endif()
endif()

if(MRN_BUNDLED)
  if(WITHOUT_MROONGA OR
      WITHOUT_MROONGA_STORAGE_ENGINE OR
      "${PLUGIN_MROONGA}" STREQUAL "NO")
    return()
  endif()
endif()

set(MRN_BUNDLED_GROONGA_RELATIVE_DIR "vendor/groonga")
set(MRN_BUNDLED_GROONGA_DIR
  "${CMAKE_CURRENT_SOURCE_DIR}/${MRN_BUNDLED_GROONGA_RELATIVE_DIR}")
if(EXISTS "${MRN_BUNDLED_GROONGA_DIR}")
  set(MRN_GROONGA_BUNDLED TRUE)
  if(MSVC)
    # Bundled Mroonga does not support MSVC yet
    return()
  endif()
else()
  set(MRN_GROONGA_BUNDLED FALSE)
endif()

set(MRN_PLUGIN_SUFFIX ${CMAKE_SHARED_LIBRARY_SUFFIX})

if(MRN_BUNDLED)
  set(MRN_SOURCE_DIR ${CMAKE_SOURCE_DIR}/storage/mroonga)
else()
  set(MRN_SOURCE_DIR ${CMAKE_SOURCE_DIR})
endif()

file(READ ${MRN_SOURCE_DIR}/version_full   MRN_VERSION)
file(READ ${MRN_SOURCE_DIR}/version_major  MRN_VERSION_MAJOR)
file(READ ${MRN_SOURCE_DIR}/version_minor  MRN_VERSION_MINOR)
file(READ ${MRN_SOURCE_DIR}/version_micro  MRN_VERSION_MICRO)
file(READ ${MRN_SOURCE_DIR}/version_in_hex MRN_VERSION_IN_HEX)
file(READ ${MRN_SOURCE_DIR}/plugin_version MRN_PLUGIN_VERSION)

if(MRN_GROONGA_BUNDLED)
  option(MRN_GROONGA_EMBED
    "Embed libgroonga"
    ON)
  if(MRN_GROONGA_EMBED)
    set(GRN_EMBED ON)
  endif()

  set(MRN_BUNDLED_GROONGA_NORMALIZER_MYSQL_DIR
    "${MRN_BUNDLED_GROONGA_DIR}/vendor/plugins/groonga-normalizer-mysql")
  option(MRN_GROONGA_NORMALIZER_MYSQL_EMBED
    "Embed groonga-normalizer-mysql Groonga plugin"
    ON)
  if(EXISTS ${MRN_BUNDLED_GROONGA_NORMALIZER_MYSQL_DIR})
    set(GROONGA_NORMALIZER_MYSQL_FOUND ON)
  else()
    set(GROONGA_NORMALIZER_MYSQL_FOUND OFF)
    set(MRN_GROONGA_NORMALIZER_MYSQL_EMBED OFF)
  endif()
  if(MRN_GROONGA_NORMALIZER_MYSQL_EMBED)
    set(GROONGA_NORMALIZER_MYSQL_EMBED ON)
  endif()

  file(READ "${MRN_BUNDLED_GROONGA_DIR}/bundled_lz4_version"
    MRN_BUNDLED_LZ4_VERSION)
  string(STRIP
    "${MRN_BUNDLED_LZ4_VERSION}"
    MRN_BUNDLED_LZ4_VERSION)
  set(MRN_BUNDLED_LZ4_DIR
    "${MRN_BUNDLED_GROONGA_DIR}/vendor/lz4-${MRN_BUNDLED_LZ4_VERSION}")
  if(EXISTS ${MRN_BUNDLED_LZ4_DIR})
    set(GRN_WITH_BUNDLED_LZ4 ON)
    set(GRN_WITH_LZ4 "yes")
  else()
    set(GRN_WITH_LZ4 "no")
  endif()

  add_subdirectory("${MRN_BUNDLED_GROONGA_RELATIVE_DIR}")
else()
  set(MRN_GROONGA_EMBED OFF)

  file(READ ${MRN_SOURCE_DIR}/required_groonga_version REQUIRED_GROONGA_VERSION)
  string(STRIP "${REQUIRED_GROONGA_VERSION}" REQUIRED_GROONGA_VERSION)

  file(READ
    ${MRN_SOURCE_DIR}/required_groonga_normalizer_mysql_version
    REQUIRED_GROONGA_NORMALIZER_MYSQL_VERSION)
  string(STRIP
    "${REQUIRED_GROONGA_NORMALIZER_MYSQL_VERSION}"
    REQUIRED_GROONGA_NORMALIZER_MYSQL_VERSION)
endif()

set(MRN_PACKAGE_STRING "${PROJECT_NAME} ${MRN_VERSION}")

include(CheckCCompilerFlag)
include(CheckCXXCompilerFlag)
include(${MRN_SOURCE_DIR}/build/cmake_modules/ReadFileList.cmake)

set(MRN_C_COMPILE_FLAGS "")
set(MRN_CXX_COMPILE_FLAGS "")

if(MRN_BUNDLED)
  set(MRN_RELATIVE_DIR_PREFIX "${MRN_SOURCE_DIR}/")
else()
  set(MRN_RELATIVE_DIR_PREFIX "")
endif()

read_file_list(${CMAKE_CURRENT_SOURCE_DIR}/sources.am MRN_SOURCES)
read_file_list(${CMAKE_CURRENT_SOURCE_DIR}/lib/libmrn_no_mysql_sources.am
  LIBMRN_NO_MYSQL_SOURCES)
string(REGEX REPLACE "([^;]+)" "${MRN_RELATIVE_DIR_PREFIX}lib/\\1"
  LIBMRN_NO_MYSQL_SOURCES "${LIBMRN_NO_MYSQL_SOURCES}")
read_file_list(${CMAKE_CURRENT_SOURCE_DIR}/lib/libmrn_need_mysql_sources.am
  LIBMRN_NEED_MYSQL_SOURCES)
string(REGEX REPLACE "([^;]+)" "${MRN_RELATIVE_DIR_PREFIX}lib/\\1"
  LIBMRN_NEED_MYSQL_SOURCES "${LIBMRN_NEED_MYSQL_SOURCES}")
read_file_list(${CMAKE_CURRENT_SOURCE_DIR}/udf/sources.am MRN_UDF_SOURCES)
string(REGEX REPLACE "([^;]+)" "${MRN_RELATIVE_DIR_PREFIX}udf/\\1"
  MRN_UDF_SOURCES "${MRN_UDF_SOURCES}")

if(MRN_BUNDLED)
  set(MYSQL_SOURCE_DIR ${CMAKE_SOURCE_DIR})
  set(MYSQL_BUILD_DIR ${MYSQL_SOURCE_DIR})
  set(MYSQL_CONFIG ${CMAKE_SOURCE_DIR}/scripts/mysql_config)
else()
  set(MYSQL_SOURCE_DIR "/PATH/TO/MYSQL/SOURCE/DIRECTORY/"
    CACHE PATH "MySQL source directory")
  if(NOT EXISTS ${MYSQL_SOURCE_DIR})
    message(FATAL_ERROR
      "MySQL source directory (MYSQL_SOURCE_DIR) doesn't exist: <${MYSQL_SOURCE_DIR}>")
  endif()
  set(MYSQL_BUILD_DIR ${MYSQL_SOURCE_DIR} CACHE PATH "MySQL build directory")
  set(MYSQL_CONFIG "mysql_config" CACHE PATH "mysql-config command path")
endif()
find_path(MYSQL_CONFIG "${MYSQL_CONFIG}")

if(EXISTS "${MYSQL_SOURCE_DIR}/storage/maria")
  set(MYSQL_VARIANT "MariaDB")
else()
  set(MYSQL_VARIANT "MySQL")
endif()

set(MYSQL_REGEX_INCLUDE_DIR "${MYSQL_SOURCE_DIR}/regex")

if(EXISTS "${MYSQL_SOURCE_DIR}/extra/rapidjson")
  set(MYSQL_RAPIDJSON_INCLUDE_DIR "${MYSQL_SOURCE_DIR}/extra/rapidjson/include")
else()
  set(MYSQL_RAPIDJSON_INCLUDE_DIR)
endif()

if(EXISTS "${MYSQL_SOURCE_DIR}/libbinlogevents")
  set(MYSQL_LIBBINLOGEVENTS_EXPORT_DIR
    "${MYSQL_SOURCE_DIR}/libbinlogevents/export")
  set(MYSQL_LIBBINLOGEVENTS_INCLUDE_DIR
    "${MYSQL_BUILD_DIR}/libbinlogevents/include"
    "${MYSQL_SOURCE_DIR}/libbinlogevents/include")
else()
  set(MYSQL_LIBBINLOGEVENTS_EXPORT_DIR)
  set(MYSQL_LIBBINLOGEVENTS_INCLUDE_DIR)
endif()

set(MYSQL_INCLUDE_DIRS
  "${MYSQL_BUILD_DIR}/include"
  "${MYSQL_SOURCE_DIR}/sql"
  "${MYSQL_SOURCE_DIR}/include"
  "${MYSQL_REGEX_INCLUDE_DIR}"
  "${MYSQL_RAPIDJSON_INCLUDE_DIR}"
  "${MYSQL_LIBBINLOGEVENTS_EXPORT_DIR}"
  "${MYSQL_LIBBINLOGEVENTS_INCLUDE_DIR}"
  "${MYSQL_SOURCE_DIR}")

if(MRN_BUNDLED)
  set(MYSQL_PLUGIN_DIR "${INSTALL_PLUGINDIR}")
  set(MYSQL_SERVICES_LIB_DIR "${MYSQL_BUILD_DIR}/libservices")
  set(MYSQL_CFLAGS "${CMAKE_C_FLAGS}")
  set(MYSQL_VERSION "${MYSQL_BASE_VERSION}")
else()
  macro(SET_MYSQL_CONFIG_VALUE OPTION VARIABLE)
    if(NOT ${VARIABLE})
      execute_process(COMMAND "${MYSQL_CONFIG}" ${OPTION}
       OUTPUT_VARIABLE MYSQL_CONFIG_OUTPUT)
      string(STRIP ${MYSQL_CONFIG_OUTPUT} ${VARIABLE})
    endif()
  endmacro()

  set_mysql_config_value("--plugindir" MYSQL_PLUGIN_DIR)
  set_mysql_config_value("--variable=pkglibdir" MYSQL_PKG_LIB_DIR)
  set(MYSQL_BUILD_LIBSERVICES_DIR "${MYSQL_BUILD_DIR}/libservices")
  if(EXISTS "${MYSQL_BUILD_LIBSERVICES_DIR}/libmysqlservices.a")
    set(MYSQL_SERVICES_LIB_DIR "${MYSQL_BUILD_LIBSERVICES_DIR}")
  else()
    set(MYSQL_SERVICES_LIB_DIR "${MYSQL_PKG_LIB_DIR}")
  endif()
  set_mysql_config_value("--cflags" MYSQL_CFLAGS)
  set_mysql_config_value("--version" MYSQL_VERSION)
endif()

if(${MYSQL_VERSION} VERSION_LESS "5.5.0")
  message(FATAL_ERROR
    "Mroonga doesn't support MySQL < 5.5.0: <${MYSQL_VERSION}>")
  return()
endif()

if(${MYSQL_VERSION} VERSION_GREATER "10.0.0" AND
   ${MYSQL_VERSION} VERSION_LESS "10.0.9")
  message(FATAL_ERROR
    "Mroonga doesn't support MariaDB 10.0.0-10.0.8: <${MYSQL_VERSION}>")
  return()
endif()

if(MRN_GROONGA_BUNDLED)
  set(GROONGA_INCLUDE_DIRS "${MRN_BUNDLED_GROONGA_DIR}/include")
  set(GROONGA_LIBRARY_DIRS "${MRN_BUNDLED_GROONGA_DIR}/lib")
  set(GROONGA_LIBRARIES "libgroonga")

  set(MRN_LIBRARY_DIRS ${GROONGA_LIBRARY_DIRS})
  set(MRN_LIBRARIES ${GROONGA_LIBRARIES})
  if(MRN_GROONGA_NORMALIZER_MYSQL_EMBED)
    set(MRN_LIBRARY_DIRS
      ${MRN_LIBRARY_DIRS}
      "${MRN_BUNDLED_GROONGA_NORMALIZER_MYSQL_DIR}/normalizers")
    set(MRN_LIBRARIES ${MRN_LIBRARIES} mysql_normalizer)
  endif()
else()
  include(FindPkgConfig)
  pkg_check_modules(GROONGA REQUIRED "groonga >= ${REQUIRED_GROONGA_VERSION}")
  pkg_check_modules(GROONGA_NORMALIZER_MYSQL
    "groonga-normalizer-mysql >= ${REQUIRED_GROONGA_NORMALIZER_MYSQL_VERSION}")
  set(MRN_LIBRARY_DIRS
    ${MRN_LIBRARY_DIRS}
    ${GROONGA_LIBRARY_DIRS})
  set(MRN_LIBRARIES ${GROONGA_LIBRARIES})
endif()

include_directories(
  "${PROJECT_BINARY_DIR}"
  "${PROJECT_SOURCE_DIR}"
  "${PROJECT_SOURCE_DIR}/lib"
  ${MYSQL_INCLUDE_DIRS}
  ${GROONGA_INCLUDE_DIRS})

if(WIN32)
  set(MYSQL_LIBRARY_DIRS
    "${MYSQL_BUILD_DIR}/lib"
    "${MYSQL_BUILD_DIR}/libmysqld")
else()
  set(MYSQL_LIBRARY_DIRS
    "${MYSQL_SERVICES_LIB_DIR}")
endif()
link_directories(
  ${MRN_LIBRARY_DIRS}
  ${MYSQL_LIBRARY_DIRS})

set(MRN_ALL_SOURCES
  ${MRN_SOURCES}
  ${MRN_UDF_SOURCES}
  ${LIBMRN_NO_MYSQL_SOURCES}
  ${LIBMRN_NEED_MYSQL_SOURCES})

if(MRN_BUNDLED)
  mysql_add_plugin(mroonga
    ${MRN_ALL_SOURCES}
    STORAGE_ENGINE MODULE_ONLY
    LINK_LIBRARIES ${MRN_LIBRARIES})
  if(NOT TARGET mroonga)
    return()
  endif()
else()
  add_library(mroonga MODULE ${MRN_ALL_SOURCES})

  set(MYSQL_LIBRARIES "mysqlservices")
  target_link_libraries(mroonga ${GROONGA_LIBRARIES} ${MYSQL_LIBRARIES})

  option(WITH_DEBUG "Enable debug options" OFF)
  if(WITH_DEBUG)
    set_property(TARGET mroonga APPEND PROPERTY
      COMPILE_DEFINITIONS "SAFE_MUTEX")
    if(CMAKE_COMPILER_IS_GNUCXX)
      set(MRN_C_COMPILE_FLAGS "${MRN_C_COMPILE_FLAGS} -g3 -O0")
      set(MRN_CXX_COMPILE_FLAGS "${MRN_CXX_COMPILE_FLAGS} -g3 -O0")
    endif()
  else()
    set_property(TARGET mroonga APPEND PROPERTY
      COMPILE_DEFINITIONS "DBUG_OFF")
  endif()

  option(WITH_DEBUG_FULL "Enable full debug options" OFF)
  if(WITH_DEBUG_FULL)
    set_property(TARGET mroonga APPEND PROPERTY
      COMPILE_DEFINITIONS "SAFE_MUTEX" "SAFEMALLOC")
  endif()

  option(DISABLE_FAST_MUTEXES "Force disabling fast mutex" OFF)
  if(DISABLE_FAST_MUTEXES)
    set_property(TARGET mroonga APPEND PROPERTY
      COMPILE_DEFINITIONS "FORCE_FAST_MUTEX_DISABLED=1")
  endif()

  option(WITH_FAST_MUTEXES "Enable fast mutex" OFF)
  if(WITH_FAST_MUTEXES)
    set_property(TARGET mroonga APPEND PROPERTY
      COMPILE_DEFINITIONS "MY_PTHREAD_FASTMUTEX")
  endif()

  if(CMAKE_COMPILER_IS_GNUCXX)
    MY_CHECK_AND_SET_COMPILER_FLAG("-Wall")
    MY_CHECK_AND_SET_COMPILER_FLAG("-Wextra")
    MY_CHECK_AND_SET_COMPILER_FLAG("-Wno-unused-parameter")
    MY_CHECK_AND_SET_COMPILER_FLAG("-Wno-strict-aliasing")
    MY_CHECK_AND_SET_COMPILER_FLAG("-Wno-deprecated")
    MY_CHECK_AND_SET_COMPILER_FLAG("-fno-exceptions")
    MY_CHECK_AND_SET_COMPILER_FLAG("-felide-constructors")
    MY_CHECK_AND_SET_COMPILER_FLAG("-Wno-implicit-fallthrough")
  endif()
  set_source_files_properties(${MRN_SOURCES} PROPERTIES
    COMPILE_FLAGS "${MYSQL_CFLAGS} ${MRN_CXX_COMPILE_FLAGS}")
  set_source_files_properties(${LIBMRN_NEED_MYSQL_SOURCES} PROPERTIES
    COMPILE_FLAGS "${MYSQL_CFLAGS} ${MRN_CXX_COMPILE_FLAGS}")
  set_source_files_properties(${MRN_UDF_SOURCES} PROPERTIES
    COMPILE_FLAGS "${MRN_CXX_COMPILE_FLAGS}")
  set_source_files_properties(${LIBMRN_NO_MYSQL_SOURCES} PROPERTIES
    COMPILE_FLAGS "${MRN_CXX_COMPILE_FLAGS}")
  set_property(TARGET mroonga APPEND PROPERTY
    COMPILE_DEFINITIONS "MYSQL_DYNAMIC_PLUGIN")
  set_target_properties(mroonga PROPERTIES
    PREFIX ""
    OUTPUT_NAME "ha_mroonga")

  install(TARGETS mroonga DESTINATION "${MYSQL_PLUGIN_DIR}")
endif()

option(MRN_BUILD_FOR_EMBEDDED_SERVER
  "Whether to build Mroonga for embedded server or not. You can't use Mroonga built for embedded server with non embedded server."
  OFF)
if(MRN_BUILD_FOR_EMBEDDED_SERVER)
  set_property(TARGET mroonga APPEND PROPERTY
    COMPILE_DEFINITIONS "EMBEDDED_LIBRARY")
endif()

if(GROONGA_NORMALIZER_MYSQL_FOUND)
  set_property(TARGET mroonga APPEND PROPERTY
    COMPILE_DEFINITIONS "WITH_GROONGA_NORMALIZER_MYSQL=1")
  if(MRN_GROONGA_NORMALIZER_MYSQL_EMBED)
    set_property(TARGET mroonga APPEND PROPERTY
      COMPILE_DEFINITIONS "MRN_GROONGA_NORMALIZER_MYSQL_EMBEDDED")
  else()
    set_property(TARGET mroonga APPEND PROPERTY
      COMPILE_DEFINITIONS "GROONGA_NORMALIZER_MYSQL_PLUGIN_NAME=\"normalizers/mysql\"")
  endif()
endif()

if(MRN_GROONGA_EMBED)
  set_property(TARGET mroonga APPEND PROPERTY
    COMPILE_DEFINITIONS "MRN_GROONGA_EMBEDDED")
endif()

set(MRN_DEFAULT_PARSER "" CACHE STRING
  "The default fulltext parser (Deprecated. Use MRN_DEFAULT_TOKENIZER instead.)")
set(MRN_DEFAULT_TOKENIZER "" CACHE STRING
  "The default tokenizer for fulltext index")
if(NOT ${MRN_DEFAULT_TOKENIZER} STREQUAL "")
  set_property(TARGET mroonga APPEND PROPERTY
    COMPILE_DEFINITIONS "MRN_DEFAULT_TOKENIZER=\"${MRN_DEFAULT_TOKENIZER}\"")
elseif(NOT ${MRN_DEFAULT_PARSER} STREQUAL "")
  set_property(TARGET mroonga APPEND PROPERTY
    COMPILE_DEFINITIONS "MRN_DEFAULT_TOKENIZER=\"${MRN_DEFAULT_PARSER}\"")
endif()

configure_file(
  "${PROJECT_SOURCE_DIR}/mrn_version.h.in"
  "${PROJECT_BINARY_DIR}/mrn_version.h")

configure_file(
  "${PROJECT_SOURCE_DIR}/config.sh.in"
  "${PROJECT_BINARY_DIR}/config.sh")

set(MRN_TEST_SUITE_DIR "${CMAKE_SOURCE_DIR}/mysql-test/suite/mroonga")
if(NOT EXISTS "${MRN_TEST_SUITE_DIR}")
  set(MRN_TEST_SUITE_DIR "${PROJECT_SOURCE_DIR}/mysql-test/mroonga")
endif()
configure_file(
  "${MRN_TEST_SUITE_DIR}/storage/r/information_schema_plugins.result.in"
  "${MRN_TEST_SUITE_DIR}/storage/r/information_schema_plugins.result"
  NEWLINE_STYLE LF)
configure_file(
  "${MRN_TEST_SUITE_DIR}/storage/r/variable_version.result.in"
  "${MRN_TEST_SUITE_DIR}/storage/r/variable_version.result"
  NEWLINE_STYLE LF)

configure_file(
  "${PROJECT_SOURCE_DIR}/data/install.sql.in"
  "${PROJECT_BINARY_DIR}/data/install.sql")

if(MRN_BUNDLED)
  set(MRN_DATA_DIR "${INSTALL_MYSQLSHAREDIR}/${PROJECT_NAME}")
else()
  set(MRN_DATA_DIR "share/${PROJECT_NAME}")
endif()
install(FILES
  "${PROJECT_SOURCE_DIR}/AUTHORS"
  "${PROJECT_SOURCE_DIR}/COPYING"
  "${PROJECT_BINARY_DIR}/data/install.sql"
  "${PROJECT_SOURCE_DIR}/data/uninstall.sql"
  DESTINATION "${MRN_DATA_DIR}/")