cmake_minimum_required(VERSION 3.2)

if (USE_ANDROID_TOOLCHAIN)
  set(CMAKE_TOOLCHAIN_FILE "${CMAKE_CURRENT_SOURCE_DIR}/cmake/android/android.toolchain.cmake")
  set(ANDROID_NATIVE_API_LEVEL 19)
  set(ANDROID_TOOLCHAIN_NAME arm-linux-androideabi-clang3.5)
  set(ANDROID_STL c++_shared)
endif ()

if (WIN32)
  cmake_policy(SET CMP0020 NEW)
endif (WIN32)

if (POLICY CMP0028)
  cmake_policy(SET CMP0028 OLD)
endif ()

if (POLICY CMP0043)
  cmake_policy(SET CMP0043 OLD)
endif ()

if (POLICY CMP0042)
  cmake_policy(SET CMP0042 OLD)
endif ()

set_property(GLOBAL PROPERTY USE_FOLDERS ON)
set_property(GLOBAL PROPERTY PREDEFINED_TARGETS_FOLDER "CMakeTargets")

project(hifi)
add_definitions(-DGLM_FORCE_RADIANS)
set(CMAKE_CXX_FLAGS_DEBUG  "${CMAKE_CXX_FLAGS_DEBUG} -DDEBUG")

find_package( Threads )

if (WIN32)
  add_definitions(-DNOMINMAX -D_CRT_SECURE_NO_WARNINGS)

  if (NOT WINDOW_SDK_PATH)
    set(DEBUG_DISCOVERED_SDK_PATH TRUE)
  endif()

  # sets path for Microsoft SDKs
  # if you get build error about missing 'glu32' this path is likely wrong
  if (MSVC10)
    set(WINDOW_SDK_PATH "C:\\Program Files\\Microsoft SDKs\\Windows\\v7.1 " CACHE PATH "Windows SDK PATH")
  elseif (MSVC12)
    if ("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
      set(WINDOW_SDK_FOLDER "x64")
    else()
      set(WINDOW_SDK_FOLDER "x86")
    endif()
    set(WINDOW_SDK_PATH "C:\\Program Files (x86)\\Windows Kits\\8.1\\Lib\\winv6.3\\um\\${WINDOW_SDK_FOLDER}" CACHE PATH "Windows SDK PATH")
  endif ()

  if (DEBUG_DISCOVERED_SDK_PATH)
    message(STATUS "The discovered Windows SDK path is ${WINDOW_SDK_PATH}")
  endif ()

  set(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} ${WINDOW_SDK_PATH})
  # /wd4351 disables warning C4351: new behavior: elements of array will be default initialized
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP /wd4351")
  # /LARGEADDRESSAWARE enables 32-bit apps to use more than 2GB of memory.
  # Caveats: http://stackoverflow.com/questions/2288728/drawbacks-of-using-largeaddressaware-for-32-bit-windows-executables
  # TODO: Remove when building 64-bit.
  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /LARGEADDRESSAWARE")
  # always produce symbols as PDB files
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zi")
  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /DEBUG /OPT:REF /OPT:ICF")
else ()
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -fno-strict-aliasing -Wno-unused-parameter")
  if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ggdb -Woverloaded-virtual -Wdouble-promotion")
      if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "5.1") # gcc 5.1 and on have suggest-override
          set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wsuggest-override")
      endif ()
  endif ()
endif(WIN32)

if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.3")
    # GLM 0.9.8 on Ubuntu 14 (gcc 4.4) has issues with the simd declarations 
    add_definitions(-DGLM_FORCE_PURE)
  endif()
endif()

if (NOT ANDROID)
  if ((NOT MSVC12) AND (NOT MSVC14))
    include(CheckCXXCompilerFlag)
    CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
    CHECK_CXX_COMPILER_FLAG("-std=c++0x" COMPILER_SUPPORTS_CXX0X)

    if (COMPILER_SUPPORTS_CXX11)
      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    elseif(COMPILER_SUPPORTS_CXX0X)
      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
    else()
      message(STATUS "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
    endif()
  endif ()
else ()
  # assume that the toolchain selected for android has C++11 support
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
endif ()

if (APPLE)
  set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++0x")
  set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --stdlib=libc++")
endif ()

if (NOT ANDROID_LIB_DIR)
  set(ANDROID_LIB_DIR $ENV{ANDROID_LIB_DIR})
endif ()

if (ANDROID)
  if (NOT ANDROID_QT_CMAKE_PREFIX_PATH)
    set(QT_CMAKE_PREFIX_PATH ${ANDROID_LIB_DIR}/Qt/5.5/android_armv7/lib/cmake)
  else ()
    set(QT_CMAKE_PREFIX_PATH ${ANDROID_QT_CMAKE_PREFIX_PATH})
  endif ()

  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
  set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/lib)

  if (ANDROID_LIB_DIR)
    list(APPEND CMAKE_FIND_ROOT_PATH ${ANDROID_LIB_DIR})
  endif ()
else ()
  if (NOT QT_CMAKE_PREFIX_PATH)
    set(QT_CMAKE_PREFIX_PATH $ENV{QT_CMAKE_PREFIX_PATH})
  endif ()
  if (NOT QT_CMAKE_PREFIX_PATH)
    get_filename_component(QT_CMAKE_PREFIX_PATH "${Qt5_DIR}/.." REALPATH)
  endif ()
endif ()

set(QT_DIR $ENV{QT_DIR})

if (WIN32)
    if (NOT EXISTS ${QT_CMAKE_PREFIX_PATH})
        message(FATAL_ERROR "Could not determine QT_CMAKE_PREFIX_PATH.")
    endif ()
endif()

# figure out where the qt dir is
get_filename_component(QT_DIR "${QT_CMAKE_PREFIX_PATH}/../../" ABSOLUTE)

set(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} ${QT_CMAKE_PREFIX_PATH})

if (APPLE)

  exec_program(sw_vers ARGS -productVersion  OUTPUT_VARIABLE OSX_VERSION)
  string(REGEX MATCH "^[0-9]+\\.[0-9]+" OSX_VERSION ${OSX_VERSION})
  message(STATUS "Detected OS X version = ${OSX_VERSION}")

  set(OSX_SDK "${OSX_VERSION}" CACHE String "OS X SDK version to look for inside Xcode bundle or at OSX_SDK_PATH")

  # set our OS X deployment target
  set(CMAKE_OSX_DEPLOYMENT_TARGET 10.8)

  # find the SDK path for the desired SDK
  find_path(
    _OSX_DESIRED_SDK_PATH
    NAME MacOSX${OSX_SDK}.sdk
    HINTS ${OSX_SDK_PATH}
    PATHS /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
          /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
  )

  if (NOT _OSX_DESIRED_SDK_PATH)
    message(STATUS "Could not find OS X ${OSX_SDK} SDK. Will fall back to default. If you want a specific SDK, please pass OSX_SDK and optionally OSX_SDK_PATH to CMake.")
  else ()
    message(STATUS "Found OS X ${OSX_SDK} SDK at ${_OSX_DESIRED_SDK_PATH}/MacOSX${OSX_SDK}.sdk")

    # set that as the SDK to use
    set(CMAKE_OSX_SYSROOT ${_OSX_DESIRED_SDK_PATH}/MacOSX${OSX_SDK}.sdk)
  endif ()

endif ()

# Hide automoc folders (for IDEs)
set(AUTOGEN_TARGETS_FOLDER "hidden/generated")

# Find includes in corresponding build directories
set(CMAKE_INCLUDE_CURRENT_DIR ON)
# Instruct CMake to run moc automatically when needed.
set(CMAKE_AUTOMOC ON)
# Instruct CMake to run rcc automatically when needed
set(CMAKE_AUTORCC ON)

set(HIFI_LIBRARY_DIR "${CMAKE_CURRENT_SOURCE_DIR}/libraries")

# setup for find modules
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules/")

if (CMAKE_BUILD_TYPE)
  string(TOUPPER ${CMAKE_BUILD_TYPE} UPPER_CMAKE_BUILD_TYPE)
else ()
  set(UPPER_CMAKE_BUILD_TYPE DEBUG)
endif ()

set(HF_CMAKE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
set(MACRO_DIR "${HF_CMAKE_DIR}/macros")
set(EXTERNAL_PROJECT_DIR "${HF_CMAKE_DIR}/externals")

file(GLOB HIFI_CUSTOM_MACROS "cmake/macros/*.cmake")
foreach(CUSTOM_MACRO ${HIFI_CUSTOM_MACROS})
  include(${CUSTOM_MACRO})
endforeach()

file(GLOB_RECURSE JS_SRC scripts/*.js)
add_custom_target(js SOURCES ${JS_SRC})
GroupSources("scripts")

if (UNIX)
   install(
   DIRECTORY "${CMAKE_SOURCE_DIR}/scripts"
   DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/interface
   COMPONENT ${CLIENT_COMPONENT}
   )
endif()

if (ANDROID)
  file(GLOB ANDROID_CUSTOM_MACROS "cmake/android/*.cmake")
  foreach(CUSTOM_MACRO ${ANDROID_CUSTOM_MACROS})
    include(${CUSTOM_MACRO})
  endforeach()
endif ()

set(EXTERNAL_PROJECT_PREFIX "project")
set_property(DIRECTORY PROPERTY EP_PREFIX ${EXTERNAL_PROJECT_PREFIX})
setup_externals_binary_dir()

option(USE_NSIGHT "Attempt to find the nSight libraries" 1)
option(GET_QUAZIP "Get QuaZip library automatically as external project" 1)


if (WIN32)
  add_paths_to_fixup_libs("${QT_DIR}/bin")
endif ()

if (NOT DEFINED SERVER_ONLY)
  set(SERVER_ONLY 0)
endif()

set_packaging_parameters()

# add subdirectories for all targets
if (NOT ANDROID)
  add_subdirectory(assignment-client)
  set_target_properties(assignment-client PROPERTIES FOLDER "Apps")
  add_subdirectory(domain-server)
  set_target_properties(domain-server PROPERTIES FOLDER "Apps")
  add_subdirectory(ice-server)
  set_target_properties(ice-server PROPERTIES FOLDER "Apps")
  add_subdirectory(server-console)
  if (NOT SERVER_ONLY)
    add_subdirectory(interface)
    set_target_properties(interface PROPERTIES FOLDER "Apps")
    add_subdirectory(tests)
  endif()
  add_subdirectory(plugins)
  add_subdirectory(tools)
endif()

if (ANDROID OR DESKTOP_GVR)
  add_subdirectory(interface)
  add_subdirectory(gvr-interface)
  add_subdirectory(plugins)
endif ()

if (DEFINED ENV{HIFI_MEMORY_DEBUGGING})
  SET( HIFI_MEMORY_DEBUGGING true )
endif ()
if (HIFI_MEMORY_DEBUGGING)
  if (UNIX)
    MESSAGE("-- Memory debugging is enabled")
  endif (UNIX)
endif ()

generate_installers()