CMakeLists.txt

# ======================================================================== #
# Copyright 2018-2019 Ingo Wald                                            #
#                                                                          #
# 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.                                           #
# ======================================================================== #

if (POLICY CMP0048)
    cmake_policy(SET CMP0048 NEW)
endif (POLICY CMP0048)

project(rayjoin LANGUAGES CUDA C CXX VERSION 1.0.1)

cmake_minimum_required(VERSION 3.10)
if (NOT WIN32)
    # visual studio doesn't like these (not need them):
    set(CMAKE_CXX_FLAGS "--std=c++14")
    set(CUDA_PROPAGATE_HOST_FLAGS ON CACHE STRING "Propagate C/CXX_FLAGS and friends to the host compiler via -Xcompile")
endif ()

set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib")
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin")

if (WIN32 AND "${CMAKE_GENERATOR}" MATCHES "^(Visual Studio).*")
    # Set the base folder where the per-project "core" folders with the *.ptx or *.optixir files get created.
    set(MODULE_TARGET_DIR "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/$(ConfigurationName)")
    # Enable multi-processor build on all Visual Studio versions.
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
else ()
    # DAR This should be independent of ${CMAKE_BUILD_TYPE} because that single-configuration generator will not create subfolders, will it?
    # Otherwise add something with if("${CMAKE_BUILD_TYPE}" STREQUAL "")
    set(MODULE_TARGET_DIR "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}")
endif ()

# Some useful macros
macro(ADD_TARGET_PROPERTIES _target _name)
    set(_properties)
    foreach (_prop ${ARGN})
        set(_properties "${_properties} ${_prop}")
    endforeach (_prop)
    get_target_property(_old_properties ${_target} ${_name})
    if (NOT _old_properties)
        # In case it's NOTFOUND
        set(_old_properties)
    endif (NOT _old_properties)
    set_target_properties(${_target} PROPERTIES ${_name} "${_old_properties} ${_properties}")
endmacro(ADD_TARGET_PROPERTIES)

macro(TARGET_INCLUDE_SYMBOL target symbol)
    if (WIN32)
        if (LOCAL_ARCH STREQUAL "amd64")
            add_target_properties(${target} LINK_FLAGS /include:${symbol})
        endif ()
    endif ()
    if (UNIX)
        add_target_properties(${target} LINK_FLAGS "-Wl,--undefined=${symbol}")
    endif ()
endmacro()

include(cmake/configure_build_type.cmake)
include(cmake/FindOptiX.cmake)
include(cmake/nvcuda_compile_module.cmake)
include_directories(${PROJECT_SOURCE_DIR})

find_package(CUDA 11.8 REQUIRED)

include("cmake/FindGFlags.cmake")
if (NOT GFLAGS_FOUND)
    message(STATUS "gflags not found, build without gflags")
else ()
    include_directories(SYSTEM ${GFLAGS_INCLUDE_DIRS})
endif ()

include("cmake/FindGlog.cmake")
if (NOT GLOG_FOUND)
    message(FATAL_ERROR "glog not found, please install the glog library")
else ()
    include_directories(SYSTEM ${GLOG_INCLUDE_DIRS})
endif ()


message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
# ------------------------------------------------------------------
# and final build rules for the project
# ------------------------------------------------------------------

add_subdirectory(src)