cmake_minimum_required(VERSION 3.18)

project(manifold LANGUAGES CXX)

set(CMAKE_VERBOSE_MAKEFILE ON)

set(THRUST_BACKEND "CUDA" CACHE STRING

"Thrust backend, either \"CUDA\", \"OMP\" or \"CPP\"(single-threaded)"

)

if(EMSCRIPTEN)

message("Building for Emscripten")

set(CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS} -sALLOW_MEMORY_GROWTH=1)

set(THRUST_BACKEND "CPP")

endif()

option(BUILD_TEST_CGAL off)

option(DISABLED_DETERMINISM 1)

option(BUILD_SHARED_LIBS off)

set(ASSIMP_INC_DIR

${PROJECT_SOURCE_DIR}/third_party/assimp/include

${CMAKE_BINARY_DIR}/third_party/assimp/include)

set(GLM_INC_DIR ${PROJECT_SOURCE_DIR}/third_party/glm)

set_property(CACHE THRUST_BACKEND PROPERTY STRINGS CUDA OMP CPP)

if(NOT THRUST_BACKEND STREQUAL "CUDA" AND NOT THRUST_BACKEND STREQUAL "OMP" AND NOT THRUST_BACKEND STREQUAL "CPP")

message(FATAL_ERROR "Invalid value for THRUST_BACKEND: ${THRUST_BACKEND}. Should be one of \"CUDA\", \"OMP\" or \"CPP\"")

endif()

if(MSVC)

set(MANIFOLD_FLAGS /DDISABLED_DETERMINISM=${DISABLED_DETERMINISM})

else()

set(MANIFOLD_FLAGS -Werror -Wall -Wno-sign-compare -Wno-unused -DDISABLED_DETERMINISM=${DISABLED_DETERMINISM})

endif()

set(MANIFOLD_NVCC_FLAGS -Xcudafe --diag_suppress=esa_on_defaulted_function_ignored --extended-lambda)

set(MANIFOLD_NVCC_RELEASE_FLAGS -O3)

set(MANIFOLD_NVCC_DEBUG_FLAGS -G)

if(THRUST_BACKEND STREQUAL "CUDA")

# we cannot set THRUST_INC_DIR when building with CUDA, otherwise the

# compiler will not use the system CUDA headers which causes incompatibility

enable_language(CUDA)

else()

set(THRUST_INC_DIR ${PROJECT_SOURCE_DIR}/third_party/thrust)

if(THRUST_BACKEND STREQUAL "OMP")

message("------------------------- Using OpenMP instead of CUDA.")

find_package(OpenMP REQUIRED)

set(MANIFOLD_OMP_INCLUDE OpenMP::OpenMP_CXX)

set(MANIFOLD_FLAGS ${MANIFOLD_FLAGS} -DTHRUST_DEVICE_SYSTEM=THRUST_DEVICE_SYSTEM_OMP -fopenmp)

else()

message("------------------------- Using C++ instead of CUDA.")

set(MANIFOLD_FLAGS ${MANIFOLD_FLAGS} -DTHRUST_DEVICE_SYSTEM=THRUST_DEVICE_SYSTEM_CPP)

endif()

endif()

add_subdirectory(utilities)

add_subdirectory(third_party)

add_subdirectory(collider)

add_subdirectory(polygon)

add_subdirectory(manifold)

add_subdirectory(meshIO)

add_subdirectory(samples)

add_subdirectory(test)

add_subdirectory(tools)