# Copyright 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#  * Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#  * Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#  * Neither the name of NVIDIA CORPORATION nor the names of its
#    contributors may be used to endorse or promote products derived
#    from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cmake_minimum_required(VERSION 3.17)

project(sharkbackend LANGUAGES C CXX)

#
# Options
#

option(TRITON_ENABLE_GPU "Enable GPU support in backend" ON)
option(TRITON_ENABLE_STATS "Include statistics collections in backend" ON)

set(TRITON_COMMON_REPO_TAG "main" CACHE STRING "Tag for triton-inference-server/common repo")
set(TRITON_CORE_REPO_TAG "main" CACHE STRING "Tag for triton-inference-server/core repo")
set(TRITON_BACKEND_REPO_TAG "main" CACHE STRING "Tag for triton-inference-server/backend repo")

if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE Release)
endif()

#
# Dependencies
#
# FetchContent requires us to include the transitive closure of all
# repos that we depend on so that we can override the tags.
#
include(FetchContent)

FetchContent_Declare(
  repo-common
  GIT_REPOSITORY https://github.com/triton-inference-server/common.git
  GIT_TAG ${TRITON_COMMON_REPO_TAG}
  GIT_SHALLOW ON
)
FetchContent_Declare(
  repo-core
  GIT_REPOSITORY https://github.com/triton-inference-server/core.git
  GIT_TAG ${TRITON_CORE_REPO_TAG}
  GIT_SHALLOW ON
)
FetchContent_Declare(
  repo-backend
  GIT_REPOSITORY https://github.com/triton-inference-server/backend.git
  GIT_TAG ${TRITON_BACKEND_REPO_TAG}
  GIT_SHALLOW ON
)
FetchContent_MakeAvailable(repo-common repo-core repo-backend)

#
# The backend must be built into a shared library. Use an ldscript to
# hide all symbols except for the TRITONBACKEND API.
#
configure_file(src/libtriton_dshark.ldscript libtriton_dshark.ldscript COPYONLY)

add_library(
  triton-dshark-backend SHARED
  src/dshark.cc
  #src/dshark_driver_module.c
)

add_library(
  SharkBackend::triton-dshark-backend ALIAS triton-dshark-backend
)

target_include_directories(
  triton-dshark-backend
  PRIVATE
    ${CMAKE_CURRENT_SOURCE_DIR}/src
)

list(APPEND CMAKE_MODULE_PATH "${PROJECT_BINARY_DIR}/lib/cmake/mlir")

add_subdirectory(thirdparty/srt EXCLUDE_FROM_ALL)

target_link_libraries(triton-dshark-backend PRIVATE iree_base_base
  iree_hal_hal
  iree_hal_cuda_cuda
  iree_hal_cuda_registration_registration
  iree_hal_vmvx_registration_registration
  iree_hal_dylib_registration_registration
  iree_modules_hal_hal
  iree_vm_vm
  iree_vm_bytecode_module
  iree_hal_local_loaders_system_library_loader
  iree_hal_local_loaders_vmvx_module_loader
  )

target_compile_features(triton-dshark-backend PRIVATE cxx_std_11)


target_link_libraries(
  triton-dshark-backend
  PRIVATE
    triton-core-serverapi   # from repo-core
    triton-core-backendapi  # from repo-core
    triton-core-serverstub  # from repo-core
    triton-backend-utils    # from repo-backend
)

if(WIN32)
  set_target_properties(
    triton-dshark-backend PROPERTIES
    POSITION_INDEPENDENT_CODE ON
    OUTPUT_NAME triton_dshark
  )
else()
  set_target_properties(
    triton-dshark-backend PROPERTIES
    POSITION_INDEPENDENT_CODE ON
    OUTPUT_NAME triton_dshark
    LINK_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/libtriton_dshark.ldscript
    LINK_FLAGS "-Wl,--version-script libtriton_dshark.ldscript"
  )
endif()



#
# Install
#
include(GNUInstallDirs)
set(INSTALL_CONFIGDIR ${CMAKE_INSTALL_LIBDIR}/cmake/SharkBackend)

install(
  TARGETS
    triton-dshark-backend
  EXPORT
    triton-dshark-backend-targets
  LIBRARY DESTINATION ${CMAKE_INSTALL_PREFIX}/backends/dshark
  RUNTIME DESTINATION ${CMAKE_INSTALL_PREFIX}/backends/dshark
)

install(
  EXPORT
    triton-dshark-backend-targets
  FILE
    SharkBackendTargets.cmake
  NAMESPACE
    SharkBackend::
  DESTINATION
    ${INSTALL_CONFIGDIR}
)

include(CMakePackageConfigHelpers)
configure_package_config_file(
  ${CMAKE_CURRENT_LIST_DIR}/cmake/SharkBackendConfig.cmake.in
  ${CMAKE_CURRENT_BINARY_DIR}/SharkBackendConfig.cmake
  INSTALL_DESTINATION ${INSTALL_CONFIGDIR}
)

install(
  FILES
  ${CMAKE_CURRENT_BINARY_DIR}/SharkBackendConfig.cmake
  DESTINATION ${INSTALL_CONFIGDIR}
)

#
# Export from build tree
#
export(
  EXPORT triton-dshark-backend-targets
  FILE ${CMAKE_CURRENT_BINARY_DIR}/SharkBackendTargets.cmake
  NAMESPACE SharkBackend::
)

export(PACKAGE SharkBackend)

