CMakeLists.txt

cmake_minimum_required(VERSION 3.0)

project(cis565_path_tracer)

set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})

# Set up include and lib paths
set(EXTERNAL "external")
include_directories("${EXTERNAL}")
include_directories("${EXTERNAL}/include")
if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
    set(EXTERNAL_LIB_PATH "${EXTERNAL}/lib/osx")
elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
    set(EXTERNAL_LIB_PATH "${EXTERNAL}/lib/linux" "/usr/lib64")
elseif(WIN32)
    set(EXTERNAL_LIB_PATH "${EXTERNAL}/lib/win")
endif()
link_directories(${EXTERNAL_LIB_PATH})
list(APPEND CMAKE_LIBRARY_PATH "${EXTERNAL_LIB_PATH}")


# Find up and set up core dependency libs

set(GLFW_INCLUDE_DIR "${EXTERNAL}/include")
set(GLFW_LIBRARY_DIR "${CMAKE_LIBRARY_PATH}")
find_library(GLFW_LIBRARY "glfw3" HINTS "${GLFW_LIBRARY_DIR}")

set(GLEW_INCLUDE_DIR "${EXTERNAL}/include")
set(GLEW_LIBRARY_DIR "${CMAKE_LIBRARY_PATH}")
add_definitions(-DGLEW_STATIC)
find_package(GLEW)

find_package(OpenGL)

set(CORELIBS
    "${GLFW_LIBRARY}"
    "${OPENGL_LIBRARY}"
    "${GLEW_LIBRARY}"
    )

# Enable C++11 for host code
set(CMAKE_CXX_STANDARD 11)

# Enable CUDA debug info in debug mode builds
list(APPEND CUDA_NVCC_FLAGS_DEBUG -G -g)

# OSX-specific hacks/fixes
if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
    list(APPEND CORELIBS "-framework IOKit")
    list(APPEND CORELIBS "-framework Cocoa")
    list(APPEND CORELIBS "-framework CoreVideo")
endif()

# Linux-specific hacks/fixes
if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
    list(APPEND CMAKE_EXE_LINKER_FLAGS "-lX11 -lXxf86vm -lXrandr -lXi")
endif()

if (WIN32)
	list(APPEND CORELIBS legacy_stdio_definitions.lib)
endif()

# Crucial magic for CUDA linking
find_package(Threads REQUIRED)
find_package(CUDA 8.0 REQUIRED)

set(CUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE ON)
set(CUDA_SEPARABLE_COMPILATION ON)

if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
    set(CUDA_PROPAGATE_HOST_FLAGS OFF)
endif()

include_directories(.)
#add_subdirectory(stream_compaction)  # TODO: uncomment if using your stream compaction
add_subdirectory(src)

cuda_add_executable(${CMAKE_PROJECT_NAME}
    "src/main.h"
    "src/main.cpp"
    )

target_link_libraries(${CMAKE_PROJECT_NAME}
    src
    #stream_compaction  # TODO: uncomment if using your stream compaction
    ${CORELIBS}
    )

add_custom_command(
    TARGET ${CMAKE_PROJECT_NAME}
    POST_BUILD
    COMMAND ${CMAKE_COMMAND} -E copy_directory
        ${CMAKE_SOURCE_DIR}/shaders
        ${CMAKE_BINARY_DIR}/shaders
    )