src/CMakeLists.txt

cmake_minimum_required (VERSION 3.9)
project (slic3r)

option(Enable_GUI "Use the wxWidgets code in slic3r.cpp" OFF)
option(GUI_BUILD_TESTS "Build tests for Slic3r GUI." ON)
option(SLIC3R_BUILD_TESTS "Build tests for libslic3r." ON)
option(SLIC3R_STATIC "Build and link Slic3r statically." ON)
option(BUILD_EXTRUDE_TIN "Build and link the extrude-tin application." OFF)
option(PROFILE "Build with gprof profiling output." OFF)
option(COVERAGE "Build with gcov code coverage profiling." OFF)

# only on newer GCCs: -ftemplate-backtrace-limit=0
add_compile_options(-DNO_PERL  -DM_PI=3.14159265358979323846 -D_GLIBCXX_USE_C99 -DHAS_BOOL -DNOGDI -DBOOST_ASIO_DISABLE_KQUEUE)

if (MSVC)
    add_compile_options(-W3)
    add_compile_options(-bigobj) 
else()
    add_compile_options(-Wall)
endif()

if(DEFINED ENV{SLIC3R_VAR_REL})
    add_compile_options(-DVAR_REL=$ENV{SLIC3R_VAR_REL})
endif(DEFINED ENV{SLIC3R_VAR_REL})

if(DEFINED ENV{SLIC3R_VAR_ABS})
    add_compile_options(-DVAR_ABS)
endif(DEFINED ENV{SLIC3R_VAR_ABS})

if(DEFINED ENV{SLIC3R_VAR_ABS_PATH})
    add_compile_options(-DVAR_ABS_PATH=$ENV{SLIC3R_VAR_ABS_PATH})
endif(DEFINED ENV{SLIC3R_VAR_ABS_PATH})

# mingw needs to be told to deal with large objects
if(MINGW)
    add_compile_options(-Wa,-mbig-obj) 
endif()

if(Enable_GUI) 
    add_compile_options(-DUSE_WX)
endif(Enable_GUI)

if($ENV{TRAVIS})
    if($ENV{TRAVIS} STREQUAL "true")
        message(STATUS "Building on Travis-CI.")
        set(IS_TRAVIS_BUILD TRUE)
    endif()
endif()

execute_process(COMMAND git rev-parse --short HEAD OUTPUT_VARIABLE GIT_VERSION ERROR_QUIET)
if (MSVC)
    if (CMAKE_BUILD_TYPE MATCHES Debug)
        add_compile_options(-DEBUG -Od)
        if (SLIC3R_STATIC)
            add_compile_options(-MTd)
        else(SLIC3R_STATIC)
            add_compile_options(-MDd)
        endif(SLIC3R_STATIC)
    elseif (CMAKE_BUILD_TYPE MATCHES Release)
        if (SLIC3R_STATIC)
            add_compile_options(-MTd)
        else(SLIC3R_STATIC)
            add_compile_options(-MD)
        endif(SLIC3R_STATIC)
    elseif (CMAKE_BUILD_TYPE MATCHES RelWithDebInfo)
        add_compile_options(-DEBUG -O2)
    endif()
else()    
    if (CMAKE_BUILD_TYPE MATCHES Debug)
        add_compile_options(-g -O0)
    elseif (CMAKE_BUILD_TYPE MATCHES Release)
        add_compile_options(-O3)
    elseif (CMAKE_BUILD_TYPE MATCHES RelWithDebInfo)
        add_compile_options(-g -O3)
    endif()
endif()

if(PROFILE)
    add_compile_options(-g -pg -DBUILD_PROFILE)
endif(PROFILE)

if(COVERAGE)
    add_compile_options(-g -ftest-coverage)
endif(COVERAGE)

set(CMAKE_INCLUDE_CURRENT_DIR ON)

IF(CMAKE_HOST_APPLE)
    add_compile_options(-stdlib=libc++ -DBOOST_THREAD_DONT_USE_CHRONO -DBOOST_NO_CXX11_RVALUE_REFERENCES -DBOOST_THREAD_USES_MOVE)
    set(CMAKE_EXE_LINKER_FLAGS "-framework IOKit -framework CoreFoundation -lc++")
ELSE(CMAKE_HOST_APPLE)
#    set(CMAKE_EXE_LINKER_FLAGS "-static-libgcc -static-libstdc++ -L.")
ENDIF(CMAKE_HOST_APPLE)


if(SLIC3R_STATIC)
    set(Boost_USE_STATIC_LIBS ON)
    set(Boost_USE_STATIC_RUNTIME ON)
else(SLIC3R_STATIC)
    set(Boost_USE_STATIC_LIBS OFF)
    set(Boost_USE_STATIC_RUNTIME OFF)
endif(SLIC3R_STATIC)


if (NOT GIT_VERSION STREQUAL "")
    if (MSVC)
        add_compile_options(/DSLIC3R_BUILD_COMMIT=${GIT_VERSION})
    else(MSVC)
        execute_process(COMMAND git rev-parse --short HEAD OUTPUT_VARIABLE GIT_VERSION_1)
        string(REGEX REPLACE "\n$" "" GIT_VERSION "${GIT_VERSION_1}")
        add_compile_options(-DSLIC3R_BUILD_COMMIT=${GIT_VERSION})
    endif(MSVC)
endif(NOT GIT_VERSION STREQUAL "")

find_package(Threads REQUIRED)

find_package(Boost REQUIRED COMPONENTS system thread filesystem)

set(LIBDIR ${CMAKE_CURRENT_SOURCE_DIR}/../xs/src/)
set(GUI_LIBDIR ${CMAKE_CURRENT_SOURCE_DIR}/GUI/)

set(TESTDIR ${CMAKE_CURRENT_SOURCE_DIR}/test)
set(GUI_TESTDIR ${CMAKE_CURRENT_SOURCE_DIR}/test/GUI/)

# directory that contains the dependent non-source files, like models and configurations
set(TESTFILE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/test/inputs/)

set(EXPAT_INCLUDES
    ${LIBDIR}/expat
)
set(ADMESH_INCLUDES
    ${LIBDIR}/admesh
)

set(BSPLINE_INCLUDES
    ${LIBDIR}/BSpline/
)

set(POLY2TRI_INCLUDES
    ${LIBDIR}/poly2tri
    ${LIBDIR}/poly2tri/sweep
    ${LIBDIR}/poly2tri/common
)
set(COMMON_INCLUDES
    ${LIBDIR}
    ${CMAKE_CURRENT_SOURCE_DIR}/standalone/
)
set(SLIC3R_INCLUDES
    ${COMMON_INCLUDES}
    ${EXPAT_INCLUDES}
    ${ADMESH_INCLUDES}
    ${POLY2TRI_INCLUDES}
    ${BSPLINE_INCLUDES}
)
set(LIBSLIC3R_INCLUDES
    ${LIBDIR}/libslic3r
)


add_library(ZipArchive STATIC
    ${LIBDIR}/Zip/ZipArchive.cpp
)
target_compile_features(ZipArchive PUBLIC cxx_std_11)
target_include_directories(ZipArchive PUBLIC ${COMMON_INCLUDES})
target_compile_options(ZipArchive PUBLIC -w)

add_library(libslic3r STATIC
    ${LIBDIR}/libslic3r/BoundingBox.cpp
    ${LIBDIR}/libslic3r/BridgeDetector.cpp
    ${LIBDIR}/libslic3r/ClipperUtils.cpp
    ${LIBDIR}/libslic3r/ConfigBase.cpp
    ${LIBDIR}/libslic3r/Config.cpp
    ${LIBDIR}/libslic3r/ConditionalGCode.cpp
    ${LIBDIR}/libslic3r/ExPolygon.cpp
    ${LIBDIR}/libslic3r/ExPolygonCollection.cpp
    ${LIBDIR}/libslic3r/Extruder.cpp
    ${LIBDIR}/libslic3r/ExtrusionEntity.cpp
    ${LIBDIR}/libslic3r/ExtrusionEntityCollection.cpp
    ${LIBDIR}/libslic3r/Fill/Fill.cpp
    ${LIBDIR}/libslic3r/Fill/Fill3DHoneycomb.cpp
    ${LIBDIR}/libslic3r/Fill/FillConcentric.cpp
    ${LIBDIR}/libslic3r/Fill/FillHoneycomb.cpp
    ${LIBDIR}/libslic3r/Fill/FillPlanePath.cpp
    ${LIBDIR}/libslic3r/Fill/FillRectilinear.cpp
    ${LIBDIR}/libslic3r/Fill/FillGyroid.cpp
    ${LIBDIR}/libslic3r/Flow.cpp
    ${LIBDIR}/libslic3r/GCode.cpp
    ${LIBDIR}/libslic3r/PrintGCode.cpp
    ${LIBDIR}/libslic3r/GCode/CoolingBuffer.cpp
    ${LIBDIR}/libslic3r/GCode/SpiralVase.cpp
    ${LIBDIR}/libslic3r/GCodeReader.cpp
    ${LIBDIR}/libslic3r/GCodeSender.cpp
    ${LIBDIR}/libslic3r/GCodeTimeEstimator.cpp
    ${LIBDIR}/libslic3r/GCodeWriter.cpp
    ${LIBDIR}/libslic3r/Geometry.cpp
    ${LIBDIR}/libslic3r/IO.cpp
    ${LIBDIR}/libslic3r/IO/AMF.cpp
    ${LIBDIR}/libslic3r/IO/TMF.cpp
    ${LIBDIR}/libslic3r/Layer.cpp
    ${LIBDIR}/libslic3r/LayerRegion.cpp
    ${LIBDIR}/libslic3r/LayerRegionFill.cpp
    ${LIBDIR}/libslic3r/LayerHeightSpline.cpp
    ${LIBDIR}/libslic3r/Line.cpp
    ${LIBDIR}/libslic3r/Log.cpp
    ${LIBDIR}/libslic3r/Model.cpp
    ${LIBDIR}/libslic3r/MotionPlanner.cpp
    ${LIBDIR}/libslic3r/MultiPoint.cpp
    ${LIBDIR}/libslic3r/PerimeterGenerator.cpp
    ${LIBDIR}/libslic3r/PlaceholderParser.cpp
    ${LIBDIR}/libslic3r/Point.cpp
    ${LIBDIR}/libslic3r/Polygon.cpp
    ${LIBDIR}/libslic3r/Polyline.cpp
    ${LIBDIR}/libslic3r/PolylineCollection.cpp
    ${LIBDIR}/libslic3r/Print.cpp
    ${LIBDIR}/libslic3r/PrintConfig.cpp
    ${LIBDIR}/libslic3r/PrintObject.cpp
    ${LIBDIR}/libslic3r/PrintRegion.cpp
    ${LIBDIR}/libslic3r/SimplePrint.cpp
    ${LIBDIR}/libslic3r/SLAPrint.cpp
    ${LIBDIR}/libslic3r/SlicingAdaptive.cpp
    ${LIBDIR}/libslic3r/Surface.cpp
    ${LIBDIR}/libslic3r/SurfaceCollection.cpp
    ${LIBDIR}/libslic3r/SVG.cpp
    ${LIBDIR}/libslic3r/TriangleMesh.cpp
    ${LIBDIR}/libslic3r/SupportMaterial.cpp
    ${LIBDIR}/libslic3r/utils.cpp
)
target_compile_features(libslic3r PUBLIC cxx_std_11)
target_include_directories(libslic3r SYSTEM PUBLIC ${SLIC3R_INCLUDES})
target_include_directories(libslic3r PUBLIC ${LIBSLIC3R_INCLUDES})

add_library(BSpline STATIC
    ${LIBDIR}/BSpline/BSpline.cpp
)
target_include_directories(BSpline PUBLIC ${BSPLINE_INCLUDES})
target_compile_options(BSpline PUBLIC -w)

add_library(admesh STATIC
    ${LIBDIR}/admesh/connect.c
    ${LIBDIR}/admesh/normals.c
    ${LIBDIR}/admesh/shared.c
    ${LIBDIR}/admesh/stl_io.c
    ${LIBDIR}/admesh/stlinit.c
    ${LIBDIR}/admesh/util.c
)
target_include_directories(admesh PUBLIC ${ADMESH_INCLUDES} ${COMMON_INCLUDES})
set_property(TARGET admesh PROPERTY C_STANDARD 99)
target_compile_options(admesh PUBLIC -w)


add_library(clipper STATIC ${LIBDIR}/clipper.cpp)
target_compile_features(clipper PUBLIC cxx_std_11)
target_include_directories(clipper PUBLIC ${COMMON_INCLUDES})
target_compile_options(clipper PUBLIC -w)

add_library(expat STATIC
    ${LIBDIR}/expat/xmlparse.c
    ${LIBDIR}/expat/xmlrole.c
    ${LIBDIR}/expat/xmltok.c
)
target_compile_features(expat PUBLIC cxx_std_11)
target_include_directories(expat PUBLIC ${EXPAT_INCLUDES})
target_compile_options(expat PUBLIC -w)

add_library(polypartition STATIC ${LIBDIR}/polypartition.cpp)
target_include_directories(polypartition PUBLIC ${COMMON_INCLUDES})
target_compile_options(polypartition PUBLIC -w)

add_library(poly2tri STATIC
    ${LIBDIR}/poly2tri/common/shapes.cc
    ${LIBDIR}/poly2tri/sweep/advancing_front.cc
    ${LIBDIR}/poly2tri/sweep/cdt.cc
    ${LIBDIR}/poly2tri/sweep/sweep_context.cc
    ${LIBDIR}/poly2tri/sweep/sweep.cc
)
target_include_directories(poly2tri PUBLIC ${COMMON_INCLUDES})
target_compile_options(poly2tri PUBLIC -w)

set(UI_TEST_SOURCES
    slic3r.cpp
    ${GUI_TESTDIR}/testableframe.cpp
    ${GUI_TESTDIR}/test_harness_gui.cpp
    ${GUI_TESTDIR}/test_field_checkbox.cpp
    ${GUI_TESTDIR}/test_field_spinctrl.cpp
    ${GUI_TESTDIR}/test_field_textbox.cpp
    ${GUI_TESTDIR}/test_field_choice.cpp
    ${GUI_TESTDIR}/test_field_numchoice.cpp
    ${GUI_TESTDIR}/test_field_point.cpp
    ${GUI_TESTDIR}/test_field_point3.cpp
    ${GUI_TESTDIR}/test_field_colorpicker.cpp
    ${GUI_TESTDIR}/test_field_slider.cpp
    ${GUI_TESTDIR}/test_optionsgroup.cpp
    ${GUI_TESTDIR}/test_preset.cpp
    ${GUI_TESTDIR}/test_preset_chooser.cpp
    ${GUI_TESTDIR}/test_misc_ui.cpp
    ${GUI_TESTDIR}/test_cli.cpp
)

set(SLIC3R_TEST_SOURCES
    ${TESTDIR}/test_harness.cpp
    ${TESTDIR}/test_data.cpp
    ${TESTDIR}/libslic3r/test_config.cpp
    ${TESTDIR}/libslic3r/test_fill.cpp
    ${TESTDIR}/libslic3r/test_flow.cpp
    ${TESTDIR}/libslic3r/test_gcodewriter.cpp
    ${TESTDIR}/libslic3r/test_geometry.cpp
    ${TESTDIR}/libslic3r/test_log.cpp
    ${TESTDIR}/libslic3r/test_model.cpp
    ${TESTDIR}/libslic3r/test_polygon.cpp
    ${TESTDIR}/libslic3r/test_print.cpp
    ${TESTDIR}/libslic3r/test_printgcode.cpp
    ${TESTDIR}/libslic3r/test_skirt_brim.cpp
    ${TESTDIR}/libslic3r/test_test_data.cpp
    ${TESTDIR}/libslic3r/test_trianglemesh.cpp
)


add_executable(slic3r slic3r.cpp)
target_compile_features(slic3r PUBLIC cxx_std_14)
#set_target_properties(slic3r PROPERTIES LINK_SEARCH_START_STATIC 1)
#set_target_properties(slic3r PROPERTIES LINK_SEARCH_END_STATIC 1)

if (${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} VERSION_GREATER 3.10)
cmake_policy(SET CMP0072 NEW)
endif (${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} VERSION_GREATER 3.10)


find_package(OpenGL)

if(SLIC3R_STATIC)
    set(Boost_USE_STATIC_LIBS ON)
    set(Boost_USE_STATIC_RUNTIME ON)
else(SLIC3R_STATIC)
    set(Boost_USE_STATIC_LIBS OFF)
    set(Boost_USE_STATIC_RUNTIME OFF)
endif(SLIC3R_STATIC)

find_library(bsystem_l boost_system log)
if(SLIC3R_STATIC)
    add_library(bsystem STATIC IMPORTED)
else(SLIC3R_STATIC)
    add_library(bsystem SHARED IMPORTED)
endif(SLIC3R_STATIC)
set_target_properties(bsystem PROPERTIES IMPORTED_LOCATION ${bsystem_l})
find_library(bthread_l boost_thread)
if(SLIC3R_STATIC)
    add_library(bthread STATIC IMPORTED)
else(SLIC3R_STATIC)
add_library(bthread SHARED IMPORTED)
endif(SLIC3R_STATIC)
set_target_properties(bthread PROPERTIES IMPORTED_LOCATION ${bthread_l})
include_directories(${Boost_INCLUDE_DIRS})

if(SLIC3R_STATIC)
    set(wxWidgets_USE_STATIC ON)
else(SLIC3R_STATIC)
    set(wxWidgets_USE_STATIC OFF)
endif(SLIC3R_STATIC)

set(wxWidgets_USE_UNICODE ON)

find_package(wxWidgets COMPONENTS net gl html aui adv core base)

IF(CMAKE_HOST_UNIX)
    #set(Boost_LIBRARIES bsystem bthread bfilesystem)
ENDIF(CMAKE_HOST_UNIX)

# Libraries that Libslic3r itself depends on.
set(LIBSLIC3R_DEPENDS
    admesh
    BSpline
    clipper
    expat
    polypartition
    poly2tri
    ZipArchive
    ${Boost_LIBRARIES}
    ${CMAKE_THREAD_LIBS_INIT} 
)

set(SLIC3R_GUI_INCLUDES
    ${LIBDIR}/libslic3r
    ${LIBDIR}/slic3r/GUI
    ${GUI_LIBDIR}
    ${OPENGL_INCLUDE_DIR}
    ${wxWidgets_INCLUDE}
)


IF(wxWidgets_FOUND AND OPENGL_FOUND AND Enable_GUI)
    MESSAGE("wx found!")
    MESSAGE("OpenGL found!")
    INCLUDE("${wxWidgets_USE_FILE}")

    add_library(slic3r_gui STATIC 
    ${GUI_LIBDIR}/Dialogs/AboutDialog.cpp
    ${GUI_LIBDIR}/Dialogs/PresetEditor.cpp
    ${GUI_LIBDIR}/Dialogs/PrintEditor.cpp
    ${GUI_LIBDIR}/Dialogs/PrinterEditor.cpp
    ${GUI_LIBDIR}/Dialogs/MaterialEditor.cpp
    ${GUI_LIBDIR}/Dialogs/ObjectCutDialog.cpp
    ${GUI_LIBDIR}/GUI.cpp
    ${GUI_LIBDIR}/MainFrame.cpp
    ${GUI_LIBDIR}/Plater.cpp
    ${GUI_LIBDIR}/Preset.cpp
    ${GUI_LIBDIR}/Scene3D.cpp
    ${GUI_LIBDIR}/Plater/Plate2D.cpp
    ${GUI_LIBDIR}/Plater/Plate3D.cpp
    ${GUI_LIBDIR}/Plater/Preview3D.cpp
    ${GUI_LIBDIR}/Plater/PlaterObject.cpp
    ${GUI_LIBDIR}/Plater/PresetChooser.cpp
    ${GUI_LIBDIR}/ProgressStatusBar.cpp
    ${GUI_LIBDIR}/Settings.cpp
    ${GUI_LIBDIR}/misc_ui.cpp
    ${GUI_LIBDIR}/OptionsGroup/UI_NumChoice.cpp
    ${GUI_LIBDIR}/OptionsGroup/UI_Choice.cpp
    ${GUI_LIBDIR}/OptionsGroup/UI_Point.cpp
    ${GUI_LIBDIR}/OptionsGroup/UI_Point3.cpp
    ${GUI_LIBDIR}/OptionsGroup/UI_Color.cpp
    ${GUI_LIBDIR}/OptionsGroup/UI_Slider.cpp
    ${LIBDIR}/slic3r/GUI/3DScene.cpp
    )
    target_compile_features(slic3r_gui PUBLIC cxx_std_14)
    target_include_directories(slic3r_gui PUBLIC ${SLIC3R_GUI_INCLUDES} ${SLIC3R_INCLUDES} )
    #only build GUI lib if building with wx
    target_link_libraries (slic3r slic3r_gui ${wxWidgets_LIBRARIES} ${OPENGL_LIBRARIES})
    add_compile_options(-DUSE_WX)

    if (GUI_BUILD_TESTS)
        enable_testing()
        if (NOT TARGET Catch)
            include (ExternalProject)
            if(IS_TRAVIS_BUILD)     # on travis, use git for fetching instead of wget
                set(FETCH_EXTERNAL_CATCH
                    GIT_REPOSITORY https://github.com/catchorg/Catch.git
                    GIT_TAG 03d122a35c3f5c398c43095a87bc82ed44642516)
            elseif(WIN32)
                set(FETCH_EXTERNAL_CATCH
                    URL https://github.com/catchorg/Catch2/archive/v2.4.2.zip
                    URL_HASH MD5=6a2ffb9c69d368ebc1ad13146c5a5e1e)
            else()
                set(FETCH_EXTERNAL_CATCH
                    URL https://github.com/catchorg/Catch2/archive/v2.4.2.tar.gz
                    URL_HASH MD5=26927b878b1f42633f15a9ef1c4bd8e7)
            endif()
            ExternalProject_Add(Catch-External
                PREFIX ${CMAKE_BINARY_DIR}/external/Catch
                ${FETCH_EXTERNAL_CATCH}
                CONFIGURE_COMMAND ""
                BUILD_COMMAND ""
                INSTALL_COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_BINARY_DIR}/external/Catch/src/Catch-External/single_include/catch2/catch.hpp
                                                         ${CMAKE_BINARY_DIR}/external/Catch/include/catch.hpp
            )
            add_library(Catch INTERFACE)
            add_dependencies(Catch Catch-External)

            target_include_directories(Catch INTERFACE ${CMAKE_BINARY_DIR}/external/Catch/include)
            target_compile_definitions(Catch INTERFACE $<$<CXX_COMPILER_ID:MSVC>:_SILENCE_CXX17_UNCAUGHT_EXCEPTION_DEPRECATION_WARNING>)
        endif()
        add_executable(gui_test ${UI_TEST_SOURCES}) 
        add_test(NAME TestGUI COMMAND gui_test)
        configure_file("${TESTDIR}/test_options.hpp.in" "${TESTDIR}/test_options.hpp")
        target_link_libraries(gui_test PUBLIC slic3r_gui libslic3r Catch ${wxWidgets_LIBRARIES} ${LIBSLIC3R_DEPENDS} ${OPENGL_LIBRARIES})
        target_include_directories(gui_test PUBLIC cxx_std_14 ${SLIC3R_GUI_INCLUDES} )
        target_include_directories(gui_test PUBLIC ${TESTDIR})
        target_compile_options(gui_test PUBLIC -DBUILD_TEST)
    endif()
    if (WIN32)
        target_link_libraries(slic3r uxtheme)    
    endif()    
ELSE(wxWidgets_FOUND AND OPENGL_FOUND AND Enable_GUI)
    # For convenience. When we cannot continue, inform the user
    if (Enable_GUI)
        if (NOT wxWidgets_FOUND)
            MESSAGE("wx not found!")
        endif (NOT wxWidgets_FOUND)
        if (NOT OPENGL_FOUND)
            MESSAGE("OpenGL not found!")
        endif (NOT OPENGL_FOUND)
    endif (Enable_GUI)
    #skip gui when no wx included
ENDIF(wxWidgets_FOUND AND OPENGL_FOUND AND Enable_GUI)

target_link_libraries (slic3r libslic3r ${LIBSLIC3R_DEPENDS})

if (BUILD_EXTRUDE_TIN)
    add_executable(extrude-tin utils/extrude-tin.cpp)
    set_target_properties(extrude-tin PROPERTIES LINK_SEARCH_START_STATIC 1)
    set_target_properties(extrude-tin PROPERTIES LINK_SEARCH_END_STATIC 1)
endif() 

# Windows needs a compiled component for Boost.nowide
IF (WIN32)
    add_library(boost-nowide STATIC 
        ${LIBDIR}/boost/nowide/iostream.cpp
    )
    if(MSVC)
        # Tell boost pragmas to not rename nowide as we are building it
        add_definitions(-DBOOST_NOWIDE_NO_LIB)
    endif()    
    target_link_libraries(slic3r boost-nowide)

    # MinGW apparently has some multiple definitions of UUID-related items
    # deal with it.
    if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
       set(CMAKE_EXE_LINKER_FLAGS "-Wl,--allow-multiple-definition")
    endif()
    if (BUILD_EXTRUDE_TIN)
        target_link_libraries(extrude-tin boost-nowide)
    endif()
ENDIF(WIN32)


if (SLIC3R_BUILD_TESTS)
    enable_testing()
    if (NOT TARGET Catch)
        include (ExternalProject)
        if(IS_TRAVIS_BUILD)     # on travis, use git for fetching instead of wget
            set(FETCH_EXTERNAL_CATCH
                GIT_REPOSITORY https://github.com/catchorg/Catch.git
                GIT_TAG 03d122a35c3f5c398c43095a87bc82ed44642516)
        elseif(WIN32)
            set(FETCH_EXTERNAL_CATCH
                URL https://github.com/catchorg/Catch2/archive/v2.4.2.zip
                URL_HASH MD5=6a2ffb9c69d368ebc1ad13146c5a5e1e)
        else()
            set(FETCH_EXTERNAL_CATCH
                URL https://github.com/catchorg/Catch2/archive/v2.4.2.tar.gz
                URL_HASH MD5=26927b878b1f42633f15a9ef1c4bd8e7)
        endif()
        ExternalProject_Add(Catch-External
            PREFIX ${CMAKE_BINARY_DIR}/external/Catch
            ${FETCH_EXTERNAL_CATCH}
            CONFIGURE_COMMAND ""
            BUILD_COMMAND ""
            INSTALL_COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_BINARY_DIR}/external/Catch/src/Catch-External/single_include/catch2/catch.hpp
                                                     ${CMAKE_BINARY_DIR}/external/Catch/include/catch.hpp
        )
        add_library(Catch INTERFACE)
        add_dependencies(Catch Catch-External)
        target_include_directories(Catch INTERFACE ${CMAKE_BINARY_DIR}/external/Catch/include)
        target_compile_definitions(Catch INTERFACE $<$<CXX_COMPILER_ID:MSVC>:_SILENCE_CXX17_UNCAUGHT_EXCEPTION_DEPRECATION_WARNING>)
    endif()
    configure_file("${TESTDIR}/test_options.hpp.in" "${TESTDIR}/test_options.hpp")
    add_executable(slic3r_test ${SLIC3R_TEST_SOURCES}) 
    add_test(NAME TestSlic3r COMMAND slic3r_test)
    target_compile_features(slic3r_test PUBLIC cxx_std_14)
    target_include_directories(slic3r_test PUBLIC cxx_std_14 ${SLIC3R_INCLUDES})
    target_include_directories(slic3r_test PUBLIC ${TESTDIR})

    target_link_libraries(slic3r_test PUBLIC libslic3r Catch ${LIBSLIC3R_DEPENDS})
endif()

if (BUILD_EXTRUDE_TIN)
    target_link_libraries (extrude-tin libslic3r ${LIBSLIC3R_DEPENDS})
endif()