cmake_minimum_required(VERSION 3.17) # FindCUDAToolkit
include(CMakeDependentOption)
project(InfiniTensor C CXX)

# Do not change these options in this file. Use cmake.config, cmake -DOPTION=VALUE, or ccmake to specify them.
option(USE_CUDA "Support CUDA GPU" OFF)
option(USE_BANG "Support BANG MLU" OFF)
option(USE_INTELCPU "Support INTELCPU" OFF)
option(USE_BACKTRACE "Print backtrace on exception and segmentation fault" ON)
option(USE_PROTOBUF "Serialize and deserialize tensors" OFF)
option(BUILD_TEST "Build tests" OFF)

cmake_dependent_option(BUILD_TEST_CORE "Build tests for core components" ON BUILD_TEST OFF)
cmake_dependent_option(BUILD_TEST_PET "Build tests for PET" OFF BUILD_TEST OFF)
cmake_dependent_option(BUILD_TEST_EINNET "Build tests for EINNET" OFF BUILD_TEST OFF)

set(DEFAULT_BUILD_TYPE "RelWithDebInfo")
# Build Type
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
    message("Configuring for Debug build.")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -O0")
    add_compile_definitions(DEBUG_MODE)
elseif(CMAKE_BUILD_TYPE STREQUAL "Release")
    message("Configuring for Release build.")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2") 
    add_compile_definitions(NDEBUG)
elseif(CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")
    message("Configuring for RelWithDebInfo build.")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -O2") 
else()
    message("Build type not specified. Configuring for RelWithDebInfo build.")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -O2") 
endif()


if(EXISTS ${CMAKE_CURRENT_BINARY_DIR}/config.cmake)
  message(STATUS "Using config.cmake in CMAKE_CURRENT_BINARY_DIR directory")
  include(${CMAKE_CURRENT_BINARY_DIR}/config.cmake)
else()
  if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/config.cmake)
    message(STATUS "Using config.cmake in CMAKE_CURRENT_SOURCE_DIR directory")
    include(${CMAKE_CURRENT_SOURCE_DIR}/config.cmake)
  endif()
endif()

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_EXTENSIONS OFF) # -std=gnu++11 when on, -std=c++11 when off

find_package(
  Python
  COMPONENTS Interpreter Development
  REQUIRED)
# OpenMP
find_package(OpenMP)
if(OpenMP_C_FOUND)
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
endif()
if(OpenMP_CXX_FOUND)
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
endif()

#Protobuf
if(USE_PROTOBUF)
  add_definitions(-D TENSOR_PROTOBUF)
  find_package(Protobuf REQUIRED)
  message(STATUS "protobuf include: " ${PROTOBUF_INCLUDE_DIRS})
  message(STATUS "protobuf libraries: " ${PROTOBUF_LIBRARIES})
  message(STATUS "protoc executable: " ${PROTOBUF_PROTOC_EXECUTABLE})
  include_directories(${PROTOBUF_INCLUDE_DIR})
  include_directories(${CMAKE_CURRENT_BINARY_DIR})
  set(PROTO_PATH "${CMAKE_CURRENT_SOURCE_DIR}/proto")
  file(GLOB PROTO_FILES "${PROTO_PATH}/data.proto")
  protobuf_generate_cpp(PROTO_SRCS PROTO_HDRS ${PROTO_FILES})
  set_source_files_properties (${PROTO_SRCS} PROPERTIES COMPILE_FLAGS -Wno-unused-variable)
  add_library(tensor_proto SHARED ${PROTO_SRCS} ${PROTO_HDRS})
  target_link_libraries(tensor_proto PUBLIC ${PROTOBUF_LIBRARIES})
endif()

include_directories(include)
# Pybind11
add_subdirectory(3rd-party/pybind11)
include_directories(3rd-party/pybind11/include)

# nlohmann_json
add_subdirectory(3rd-party/nlohmann_json_cmake_fetchcontent)
include_directories(3rd-party/nlohmann_json_cmake_fetchcontent/single_include)

# TVM backend
if(BUILD_TEST_EINNET)
  if (NOT TVM_INCLUDE_DIR OR NOT DMLC_INCLUDE_DIR OR NOT DLPACK_INCLUDE_DIR OR NOT DLPACK_INCLUDE_DIR)
    message(FATAL_ERROR "TVM_INCLUDE_DIR, DMLC_INCLUDE_DIR, and DLPACK_INCLUDE_DIR must be set when BUILD_TEST_EINNET is ON")
  endif()
  # TVM and DMLC for invoking TVM packed functions
  include_directories(${TVM_INCLUDE_DIR})
  include_directories(${DMLC_INCLUDE_DIR})
  include_directories(${DLPACK_INCLUDE_DIR})
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DDMLC_USE_LOGGING_LIBRARY=\\\<${TVM_INCLUDE_DIR}/tvm/runtime/logging.h\\\> ")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DINFINI_USE_TVM=1") # Enable TVM codegen kernels
endif()

if(BUILD_TEST)
  set(BUILD_GMOCK
      OFF
      CACHE BOOL "Do not build gmock" FORCE)
  set(INSTALL_GTEST
      OFF
      CACHE BOOL "Do not install gtest" FORCE)
  add_subdirectory(3rd-party/googletest)
  include_directories(3rd-party/googletest/googletest/include)
endif()

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -Wall -Werror -Wno-error=deprecated-declarations")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -UNDEBUG") # Enable assertion
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -UNDEBUG") # Enable assertion


# Source files
file(GLOB_RECURSE SRC src/ffi/*.cc src/core/*.cc src/kernels/cpu/*.cc src/nnet/*.cc src/operators/*.cc src/utils/*.cc)

if(USE_CUDA)
  file(GLOB_RECURSE SRC_CUDA src/cuda/*.cc src/cuda/*.cu src/kernels/cuda/*.cc src/kernels/cuda/*.cu)
  list (APPEND SRC ${SRC_CUDA})
endif()

if(USE_BANG)
  file(GLOB_RECURSE SRC_BANG src/bang/*.cc src/kernels/bang/*.cc )
  list (APPEND SRC ${SRC_BANG})
endif()

if(USE_INTELCPU)
  file(GLOB_RECURSE SRC_INTELCPU src/intelcpu/*.cc src/kernels/intelcpu/*.cc )
  list (APPEND SRC ${SRC_INTELCPU})
endif()

# Libraries
add_library(InfiniTensor SHARED ${SRC})
if(USE_PROTOBUF)
  target_link_libraries(InfiniTensor tensor_proto)
endif()

target_link_libraries(InfiniTensor pybind11::embed)

# TVM backend
if(BUILD_TEST_EINNET)
  target_link_libraries(InfiniTensor ${TVM_LIB_DIR}/libtvm.so)
endif()

# Python bindings
file(GLOB_RECURSE FFIS src/ffi/ffi_infinitensor.cc)
pybind11_add_module(backend MODULE ${FFIS})
target_link_libraries(backend PRIVATE InfiniTensor)

if(USE_BACKTRACE)
  add_definitions(-D BACKWARD_TRACE)
  add_subdirectory(3rd-party/backward-cpp)
  include_directories(3rd-party/backward-cpp)
  add_backward(InfiniTensor)
  target_link_libraries(InfiniTensor dw)
endif()

if(USE_INTELCPU)
  add_compile_definitions(USE_INTELCPU=1)
  find_package(MKL CONFIG REQUIRED)

  # Refer to https://www.intel.com/content/www/us/en/developer/tools/oneapi/onemkl-link-line-advisor.html
  target_link_libraries(InfiniTensor sycl OpenCL)

  set(DNNL_CONFIGURATION "cpu_gomp")
  find_package(dnnl CONFIG REQUIRED)
  if(dnnl_FOUND)
      add_compile_definitions(USE_MKL=1)
      include_directories(BEFORE ${dnnl_DIR}/../../../cpu_gomp/include/)
      link_directories(${dnnl_DIR}/../../../cpu_gomp/lib)
      target_link_libraries(InfiniTensor   dnnl)
  else()
      message(FATAL_ERROR "dnnl library not found")
  endif()
  set(WNO_ERRORS "-Wno-error=unused-parameter -Wno-error=unused-function -Wno-error=unused-private-field -Wno-error=ignored-attributes -Wno-error=unused-const-variable -Wno-error=inconsistent-missing-override -Wno-error=unused-variable -Wno-error=tautological-constant-compare")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DMKL_ILP64 -qmkl=parallel -Werror  ${WNO_ERRORS}")
  set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -DMKL_ILP64 -qmkl=parallel ${WNO_ERRORS}") # Enable assertion
  set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -DMKL_ILP64 -qmkl=parallel ${WNO_ERRORS}") # Enable assertion

  find_package(IntelDPCPP REQUIRED)
endif()

if(USE_CUDA)
  add_compile_definitions(USE_CUDA=1)
  # Since enable_language only executes once, rerun cmake is required if CMAKE_CUDA_HOST_COMPILER is wrong
  set(CMAKE_CUDA_HOST_COMPILER
      ${CMAKE_CXX_COMPILER}
      CACHE STRING "Set cuda host compiler path")
  # CMP0104 requires CUDA_ARCHITECTURES
  set_target_properties(InfiniTensor PROPERTIES CUDA_ARCHITECTURES "70;80")
  enable_language(CUDA)
  find_package(CUDAToolkit) # For nvrtc and cuda driver
  target_link_libraries(InfiniTensor cudnn CUDA::curand CUDA::cublas CUDA::nvrtc CUDA::cudart CUDA::cuda_driver)
endif()

if(USE_BANG)
  add_compile_definitions(USE_BANG=1)
  include_directories(src/kernels/mlu/include)
  ################################################################################
  # Neuware Evironment
  ################################################################################
  # cnrt cndrv cnnl
  if ((NOT DEFINED NEUWARE_HOME) AND (NOT DEFINED ENV{NEUWARE_HOME}))
    message(FATAL_ERROR "NEUWARE_HOME is not defined from cmake or env")
  elseif (DEFINED NEUWARE_HOME)
    set(NEUWARE_HOME ${NEUWARE_HOME} CACHE STRING "NEUWARE_HOME directory for Cambricon Neuware development")
  else()
    set(NEUWARE_HOME $ENV{NEUWARE_HOME} CACHE STRING "NEUWARE_HOME directory for Cambricon Neuware development")
  endif()
  message(STATUS "NEUWARE_HOME: ${NEUWARE_HOME}")

  include_directories("${NEUWARE_HOME}/include")
  find_library(CAMBRICON_CNNL libcnnl.so "${NEUWARE_HOME}/lib64")
  find_library(CAMBRICON_CNRT libcnrt.so "${NEUWARE_HOME}/lib64")
  find_library(CAMBRICON_CNDRV libcndrv.so "${NEUWARE_HOME}/lib64")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -lstdc++ -Wall -Werror")

  if ((NOT DEFINED TARGET_CPU_ARCH) AND (NOT DEFINED ENV{TARGET_CPU_ARCH}))
    execute_process(COMMAND uname -m OUTPUT_VARIABLE _uname_m OUTPUT_STRIP_TRAILING_WHITESPACE)
    set(TARGET_CPU_ARCH "${_uname_m}" CACHE STRING "Target CPU ARCH")
  elseif(DEFINED TARGET_CPU_ARCH)
    set(TARGET_CPU_ARCH ${TARGET_CPU_ARCH} CACHE STRING "Target CPU ARCH")
  else()
    set(TARGET_CPU_ARCH $ENV{TARGET_CPU_ARCH} CACHE STRING "Target CPU ARCH")
  endif()
  message(STATUS "TARGET_CPU_ARCH: ${TARGET_CPU_ARCH}")

  ################################################################################
  # BangC Kernels
  ################################################################################

  target_link_libraries(InfiniTensor ${CAMBRICON_CNNL} ${CAMBRICON_CNRT} ${CAMBRICON_CNDRV} stdc++)
endif()

# # Python bindings
# pybind11_add_module(infini MODULE ${FFI})
# target_link_libraries(infini PRIVATE infini_cpp)

function(build_test files)
  # Non-recursive glob for skip failed tests
  file(GLOB TEST_SOURCES ${files})
  foreach(testsourcefile ${TEST_SOURCES})
    get_filename_component(testname ${testsourcefile} NAME_WE)
    add_executable(${testname} ${testsourcefile})
    target_link_libraries(${testname} InfiniTensor GTest::gtest_main)
    add_test(NAME ${testname} COMMAND ${testname})
  endforeach(testsourcefile ${TEST_SOURCES})
endfunction()

if(BUILD_TEST)
  add_compile_definitions(BUILD_TEST=1)
  enable_testing()
  if(USE_TRACE)
    build_test(test/trace/*.cc)
  endif()
  if(BUILD_TEST_CORE)
    build_test(test/core/*.cc)
    build_test(test/operators/*.cc)
    if (USE_CUDA)
      build_test(test/kernels/cuda/*.cc)
    endif()
    if (USE_BANG)
      build_test(test/kernels/bang/*.cc)
    endif()
    if (USE_INTELCPU)
      build_test(test/kernels/intelcpu/*.cc)
    endif()
  endif()
  if(BUILD_TEST_PET)
    build_test(test/pet/*.cc)
  endif()
  if(BUILD_TEST_EINNET)
    build_test(test/nnet/test_*.cc)

    # Build expression reader
    add_executable(nnet_reader test/nnet/readlog.cc)
    target_link_libraries(nnet_reader InfiniTensor)
  endif()
endif()