CMakeLists.txt

# SPDX-FileCopyrightText: Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
# SPDX-License-Identifier: Apache-2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

cmake_minimum_required(VERSION 3.20.1)
project(Holohub CXX)

# set CMAKE_MODULE_PATH
list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules)
list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/deps)

# To configure which apps/operators to build
include(HoloHubConfigHelpers)

# Set install directory
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
  set(CMAKE_INSTALL_PREFIX "${CMAKE_SOURCE_DIR}/install" CACHE PATH "Installation directory" FORCE)
endif()

# Enable Testing
include(CTest)

# Options
option(HOLOHUB_DOWNLOAD_DATASETS "Download datasets" ON)
option(HOLOHUB_BUILD_PYTHON "Build Holoscan SDK Python Bindings" ON)

# Enable flow benchmarking
option(FLOW_BENCHMARKING "Enable Flow Benchmarking" OFF)
if(FLOW_BENCHMARKING)
  set(FLOW_BENCHMARK_DIR "${CMAKE_BINARY_DIR}/flow_benchmarks")
  file(MAKE_DIRECTORY "${FLOW_BENCHMARK_DIR}")
endif()

if(HOLOHUB_BUILD_PYTHON)
  # Define and create a directory to store python operators under the holohub python module
  if(NOT CMAKE_INSTALL_LIBDIR)
    set(CMAKE_INSTALL_LIBDIR lib)
  endif()
  set(HOLOHUB_PYTHON_MODULE_OUT_DIR ${CMAKE_BINARY_DIR}/python/${CMAKE_INSTALL_LIBDIR}/holohub)
  file(MAKE_DIRECTORY ${HOLOHUB_PYTHON_MODULE_OUT_DIR})
endif()

# Set the default data directory
set(HOLOHUB_DATA_DIR "${CMAKE_BINARY_DIR}/data" CACHE PATH "Data Download directory")
set(CMAKE_INSTALL_RPATH
    "\$ORIGIN:\$ORIGIN/../../../lib:\$ORIGIN/../../lib:/opt/nvidia/holoscan/lib/")

# Build the applications
add_subdirectory(applications)

# Build the benchmarks
add_subdirectory(benchmarks)

# Build the operators
add_subdirectory(operators)

# Build the extensions
add_subdirectory(gxf_extensions)