CMakeLists.txt

# This file is part of the reference implementation for the paper 
#   Bayesian Collaborative Denoising for Monte-Carlo Rendering
#   Malik Boughida and Tamy Boubekeur.
#   Computer Graphics Forum (Proc. EGSR 2017), vol. 36, no. 4, p. 137-153, 2017
#
# All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE.txt file.

CMAKE_MINIMUM_REQUIRED(VERSION 2.8.8)

PROJECT(BayesianCollaborativeDenoising)

OPTION(BCD_BUILD_GUI "Build a GUI executable for bcd, using library NanoGUI" ON)
OPTION(BCD_USE_CUDA "Use CUDA for accelerating computations" ON)

# Add CMake folder to the  module path : contains CMake specific files *.cmake
SET(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMake" ${CMAKE_MODULE_PATH} )

# Set the default build to Release.  Note this doesn't do anything for the VS
# default build target which defaults to Debug when you first start it.
IF(NOT CMAKE_BUILD_TYPE)
	SET(CMAKE_BUILD_TYPE "Release" CACHE STRING
		"Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel."
		FORCE)
ENDIF(NOT CMAKE_BUILD_TYPE)







# OpenMP
FIND_PACKAGE(OpenMP)

#IF(${CMAKE_VERSION} VERSION_GREATER 3.8)
#
#	# not tested yet
#	MESSAGE(AUTHOR_WARNING "Using OpenMP detection from cmake 3.9.0+: not tested yet")
#	IF(OPENMP_CXX_FOUND)
#		ADD_LIBRARY(OpenMP ALIAS OpenMP::OpenMP_CXX)
#	ELSE()
#		MESSAGE(WARNING "Could not find OpenMP library")
#	ENDIF()
#
#ELSE()

	IF(OPENMP_FOUND)
		ADD_LIBRARY(OpenMP INTERFACE)
		TARGET_COMPILE_OPTIONS(OpenMP INTERFACE ${OpenMP_CXX_FLAGS})
		TARGET_LINK_LIBRARIES(OpenMP INTERFACE
				$<$<CXX_COMPILER_ID:GNU>:${OpenMP_CXX_FLAGS}>
				$<$<CXX_COMPILER_ID:Clang>:${OpenMP_CXX_FLAGS}>
				$<$<CXX_COMPILER_ID:Intel>:${OpenMP_CXX_FLAGS}>
				)
	ELSE()
		MESSAGE(WARNING "Could not find OpenMP library")
	ENDIF()

#ENDIF()







IF(BCD_USE_CUDA)

	SET(CUDA_PROPAGATE_HOST_FLAGS OFF)
	FIND_PACKAGE(CUDA)

	IF(NOT CUDA_FOUND)
		MESSAGE(WARNING "Could not find CUDA")
	ELSE(NOT CUDA_FOUND)

		SET(CUDA_LIBRARIES PUBLIC ${CUDA_LIBRARIES}) # hack to avoid cmake warnings related to policy CMP0023 (see https://gitlab.kitware.com/cmake/cmake/issues/16602 )

		SET(config_types DEBUG RELEASE MINSIZEREL RELWITHDEBINFO)

		# We have to manually propagate all host flags but C++11...
		FOREACH(config ${config_types})
			SET(CUDA_NVCC_FLAGS_${config} "${CUDA_NVCC_FLAGS_${config}} -Xcompiler ")
	#		SET(CUDA_NVCC_FLAGS_${config} "${CUDA_NVCC_FLAGS_${config}} -g -lineinfo -Xcompiler ") #use this line instead of the previous one for debugging and line info (for nvprof for example)
			IF(OPENMP_FOUND)
				SET(CUDA_NVCC_FLAGS_${config} "${CUDA_NVCC_FLAGS_${config}},\"${OpenMP_CXX_FLAGS}\"")
			ENDIF(OPENMP_FOUND)
			STRING(REPLACE " " ";" FLAGS_LIST ${CMAKE_CXX_FLAGS_${config}})
			FOREACH(flag ${FLAGS_LIST})
				SET(CUDA_NVCC_FLAGS_${config} "${CUDA_NVCC_FLAGS_${config}},\"${flag}\"")
			ENDFOREACH()
		ENDFOREACH()
	ENDIF(NOT CUDA_FOUND)

	# Verbose option: put ON to see the whole build command lines
	IF(CUDA_FOUND)
		SET(CUDA_VERBOSE_BUILD ON)
	ENDIF(CUDA_FOUND)

ENDIF(BCD_USE_CUDA)






# Verbose option: put ON to see the whole build command lines
#SET(CMAKE_VERBOSE_MAKEFILE ON)


SET(bcd_include_folder "${CMAKE_SOURCE_DIR}/include/bcd")


#MESSAGE(STATUS "Entering subdirectory 'ext'")
ADD_SUBDIRECTORY(ext)

#MESSAGE(STATUS "Entering subdirectory 'src'")
ADD_SUBDIRECTORY(src)


#INCLUDE(CPack)