Fix Linux build & some warnings (#6438)

* Fix linux deps debug build

* Use the same DL_CACHE for release build when building debug version of deps on Linux.
This prevents downloading the same source packages twice, and avoid downloading again after deleting the build dir.

* Fix debug build

* Fix warnings "loop variable creates a copy from type" and "loop variable binds to a temporary constructed from type"

BuildLinux.sh

@@ -127,8 +127,11 @@ then
     if [[ -n "${BUILD_DEBUG}" ]]
     then
         # have to build deps with debug & release or the cmake won't find everything it needs
+        if [ ! -d "deps/build/release" ]
+        then
             mkdir deps/build/release
-        cmake -S deps -B deps/build/release -G Ninja -DDESTDIR="../destdir" ${BUILD_ARGS}
+        fi
+        cmake -S deps -B deps/build/release -G Ninja -DDESTDIR="${PWD}/deps/build/destdir" -DDEP_DOWNLOAD_DIR="${PWD}/deps/DL_CACHE" ${BUILD_ARGS}
         cmake --build deps/build/release
         BUILD_ARGS="${BUILD_ARGS} -DCMAKE_BUILD_TYPE=Debug"
     fi

src/libslic3r/Clipper2Utils.cpp

@@ -23,7 +23,7 @@ Clipper2Lib::Paths64 Slic3rPoints_to_Paths64(const std::vector<T>& in)
 {
     Clipper2Lib::Paths64 out;
     out.reserve(in.size());
-    for (const T item: in) {
+    for (const T& item: in) {
         Clipper2Lib::Path64 path;
         path.reserve(item.size());
         for (const Slic3r::Point& point : item.points)

src/libslic3r/Emboss.cpp

@@ -334,8 +334,8 @@ bool Emboss::divide_segments_for_close_point(ExPolygons &expolygons, double dist
                 const Points &poly_pts = poly.points;
                 const Point &line_a = poly_pts[id.point_index];
                 const Point &line_b = (!ids.is_last_point(id)) ? poly_pts[id.point_index + 1] : poly_pts.front();
-                assert(line_a == lines[index].a.cast<int>());
+                assert(line_a == lines[index].a.cast<coord_t>());
-                assert(line_b == lines[index].b.cast<int>());
+                assert(line_b == lines[index].b.cast<coord_t>());
                 if (p == line_a || p == line_b) continue;
 
                 divs.emplace_back(p, index);

src/libslic3r/Format/bbs_3mf.cpp

@@ -4622,7 +4622,7 @@ void PlateData::parse_filament_info(GCodeProcessorResult *result)
                 its.vertices.assign(sub_object->geometry.vertices.begin(), sub_object->geometry.vertices.end());
 
                 // BBS
-                for (const std::string prop_str : sub_object->geometry.face_properties) {
+                for (const std::string& prop_str : sub_object->geometry.face_properties) {
                     FaceProperty face_prop;
                     face_prop.from_string(prop_str);
                     its.properties.push_back(face_prop);

src/libslic3r/Model.cpp

@@ -3538,7 +3538,7 @@ void check_model_ids_validity(const Model &model)
         for (const ModelInstance *model_instance : model_object->instances)
             check(model_instance->id());
     }
-    for (const auto mm : model.materials) {
+    for (const auto& mm : model.materials) {
         check(mm.second->id());
         check(mm.second->config.id());
     }

src/libslic3r/Preset.cpp

@@ -340,7 +340,7 @@ void Preset::normalize(DynamicPrintConfig &config)
                 static_cast<ConfigOptionVectorBase*>(opt)->resize(n, defaults.option(key));
         }
         // The following keys are mandatory for the UI, but they are not part of FullPrintConfig, therefore they are handled separately.
-        for (const std::string &key : { "filament_settings_id" }) {
+        for (const std::string key : { "filament_settings_id" }) {
             auto *opt = config.option(key, false);
             assert(opt == nullptr || opt->type() == coStrings);
             if (opt != nullptr && opt->type() == coStrings)

src/libslic3r/Print.cpp

@@ -2925,7 +2925,7 @@ DynamicConfig PrintStatistics::config() const
 DynamicConfig PrintStatistics::placeholders()
 {
     DynamicConfig config;
-    for (const std::string &key : {
+    for (const std::string key : {
         "print_time", "normal_print_time", "silent_print_time",
         "used_filament", "extruded_volume", "total_cost", "total_weight",
         "initial_tool", "total_toolchanges", "total_wipe_tower_cost", "total_wipe_tower_filament"})

src/libslic3r/PrintConfig.cpp

@@ -5329,11 +5329,11 @@ void PrintConfigDef::init_extruder_option_keys()
         "retraction_length",
         "retraction_minimum_travel",
         "retraction_speed",
+        "travel_slope",
         "wipe",
         "wipe_distance",
         "z_hop",
-        "z_hop_types",
+        "z_hop_types"
-        "travel_slope"
     };
     assert(std::is_sorted(m_extruder_retract_keys.begin(), m_extruder_retract_keys.end()));
 }

src/libslic3r/ShortestPath.hpp

@@ -29,7 +29,7 @@ template<typename T> inline void reorder_by_shortest_traverse(std::vector<T> &po
 {
     Points start_point;
     start_point.reserve(polylines_out.size());
-    for (const T contour : polylines_out) start_point.push_back(contour.points.front());
+    for (const T& contour : polylines_out) start_point.push_back(contour.points.front());
 
     std::vector<Points::size_type> order = chain_points(start_point);
 

src/libslic3r/TreeSupport.cpp

@@ -482,7 +482,7 @@ static bool move_inside_expolys(const ExPolygons& polygons, Point& from, double
         // because we compare with vsize2_with_unscale here (no division by zero), we also need to compare by vsize2_with_unscale inside the loop
         // to avoid integer rounding edge cases
         bool projected_p_beyond_prev_segment = dot_with_unscale(p1 - p0, from - p0) >= vsize2_with_unscale(p1 - p0);
-        for(const Point p2 : poly.contour.points)
+        for(const Point& p2 : poly.contour.points)
         {
             // X = A + Normal(B-A) * (((B-A) dot_with_unscale (P-A)) / VSize(B-A));
             //   = A +       (B-A) *  ((B-A) dot_with_unscale (P-A)) / VSize2(B-A);
@@ -1437,11 +1437,11 @@ void TreeSupport::generate_toolpaths()
 
     if (m_object->support_layer_count() > m_raft_layers) {
         const SupportLayer *ts_layer = m_object->get_support_layer(m_raft_layers);
-        for (const ExPolygon expoly : ts_layer->floor_areas)
+        for (const ExPolygon& expoly : ts_layer->floor_areas)
             raft_areas.push_back(expoly);
-        for (const ExPolygon expoly : ts_layer->roof_areas)
+        for (const ExPolygon& expoly : ts_layer->roof_areas)
             raft_areas.push_back(expoly);
-        for (const ExPolygon expoly : ts_layer->base_areas)
+        for (const ExPolygon& expoly : ts_layer->base_areas)
             raft_areas.push_back(expoly);
     }
 
@@ -3628,7 +3628,7 @@ const ExPolygons& TreeSupportData::get_avoidance(coordf_t radius, size_t layer_n
 Polygons TreeSupportData::get_contours(size_t layer_nr) const
 {
     Polygons contours;
-    for (const ExPolygon expoly : m_layer_outlines[layer_nr]) {
+    for (const ExPolygon& expoly : m_layer_outlines[layer_nr]) {
         contours.push_back(expoly.contour);
     }
 
@@ -3638,7 +3638,7 @@ Polygons TreeSupportData::get_contours(size_t layer_nr) const
 Polygons TreeSupportData::get_contours_with_holes(size_t layer_nr) const
 {
     Polygons contours;
-    for (const ExPolygon expoly : m_layer_outlines[layer_nr]) {
+    for (const ExPolygon& expoly : m_layer_outlines[layer_nr]) {
         for(int i=0;i<expoly.num_contours();i++)
             contours.push_back(expoly.contour_or_hole(i));
     }

src/qhull/CMakeLists.txt

@@ -19,7 +19,11 @@ if(Qhull_FOUND)
 message(STATUS "Using qhull from system.")
 if(SLIC3R_STATIC)
     slic3r_remap_configs("Qhull::qhullcpp;Qhull::qhullstatic_r" RelWithDebInfo Release)
+    if ("${CMAKE_BUILD_TYPE}" STREQUAL "Debug")
+        target_link_libraries(qhull INTERFACE Qhull::qhullcpp_d Qhull::qhullstatic_rd)
+    else()
         target_link_libraries(qhull INTERFACE Qhull::qhullcpp Qhull::qhullstatic_r)
+    endif()
 else()
     slic3r_remap_configs("Qhull::qhullcpp;Qhull::qhull_r" RelWithDebInfo Release)
     target_link_libraries(qhull INTERFACE Qhull::qhullcpp Qhull::qhull_r)

src/slic3r/GUI/CreatePresetsDialog.cpp

@@ -277,7 +277,7 @@ static wxArrayString get_exist_vendor_choices(VendorMap& vendors)
         vendors[users_models.name] = users_models;
     }
 
-    for (const pair<std::string, VendorProfile> &vendor : vendors) {
+    for (const auto& vendor : vendors) {
         if (vendor.second.models.empty() || vendor.second.id.empty()) continue;
         choices.Add(vendor.first);
     }
@@ -658,11 +658,11 @@ void CreateFilamentPresetDialog::on_dpi_changed(const wxRect &suggested_rect) {
 
 bool CreateFilamentPresetDialog::is_check_box_selected()
 {
-    for (const std::pair<::CheckBox *, std::pair<std::string, Preset *>> &checkbox_preset : m_filament_preset) {
+    for (const auto& checkbox_preset : m_filament_preset) {
         if (checkbox_preset.first->GetValue()) { return true; }
     }
 
-    for (const std::pair<::CheckBox *, std::pair<std::string, Preset *>> &checkbox_preset : m_machint_filament_preset) {
+    for (const auto& checkbox_preset : m_machint_filament_preset) {
         if (checkbox_preset.first->GetValue()) { return true; }
     }
 
@@ -693,7 +693,7 @@ wxBoxSizer *CreateFilamentPresetDialog::create_vendor_item()
     horizontal_sizer->Add(optionSizer, 0, wxEXPAND | wxALL | wxALIGN_CENTER_VERTICAL, FromDIP(5)); 
 
     wxArrayString choices;
-    for (const wxString &vendor : filament_vendors) {
+    for (const wxString vendor : filament_vendors) {
         choices.push_back(vendor);
     }
     choices.Sort();
@@ -775,7 +775,7 @@ wxBoxSizer *CreateFilamentPresetDialog::create_type_item()
     horizontal_sizer->Add(optionSizer, 0, wxEXPAND | wxALL | wxALIGN_CENTER_VERTICAL, FromDIP(5));
 
     wxArrayString filament_type;
-    for (const wxString &filament : m_system_filament_types_set) {
+    for (const wxString filament : m_system_filament_types_set) {
         filament_type.Add(filament);
     }
     filament_type.Sort();
@@ -1050,7 +1050,7 @@ wxBoxSizer *CreateFilamentPresetDialog::create_button_item()
         
         if (curr_create_type == m_create_type.base_filament) {
             BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << ":clone filament  create type  filament ";
-            for (const std::pair<::CheckBox *, std::pair<std::string, Preset *>> &checkbox_preset : m_filament_preset) {
+            for (const auto& checkbox_preset : m_filament_preset) {
                 if (checkbox_preset.first->GetValue()) { 
                     std::string compatible_printer_name = checkbox_preset.second.first;
                     std::vector<std::string> failures;
@@ -1077,7 +1077,7 @@ wxBoxSizer *CreateFilamentPresetDialog::create_button_item()
             }
         } else if (curr_create_type == m_create_type.base_filament_preset) {
             BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << ":clone filament presets  create type  filament preset";
-            for (const std::pair<::CheckBox *, std::pair<std::string, Preset *>> &checkbox_preset : m_machint_filament_preset) {
+            for (const auto& checkbox_preset : m_machint_filament_preset) {
                 if (checkbox_preset.first->GetValue()) {
                     std::string compatible_printer_name = checkbox_preset.second.first;
                     std::vector<std::string> failures;
@@ -1155,7 +1155,7 @@ wxArrayString CreateFilamentPresetDialog::get_filament_preset_choices()
     }
     
     int suffix = 0;
-    for (const pair<std::string, std::vector<Preset *>> &preset : m_filament_choice_map) { 
+    for (const auto& preset : m_filament_choice_map) {
         if (preset.second.empty()) continue;
         std::set<wxString> preset_name_set;
         for (Preset* filament_preset : preset.second) { 
@@ -1752,7 +1752,7 @@ wxBoxSizer *CreatePrinterPresetDialog::create_nozzle_diameter_item(wxWindow *par
     wxBoxSizer *comboBoxSizer = new wxBoxSizer(wxVERTICAL);
     m_nozzle_diameter         = new ComboBox(parent, wxID_ANY, wxEmptyString, wxDefaultPosition, OPTION_SIZE, 0, nullptr, wxCB_READONLY);
     wxArrayString nozzle_diameters;
-    for (const std::string nozzle : nozzle_diameter_vec) { 
+    for (const std::string& nozzle : nozzle_diameter_vec) {
         nozzle_diameters.Add(nozzle + " mm");
     }
     m_nozzle_diameter->Set(nozzle_diameters);
@@ -3899,7 +3899,7 @@ ExportConfigsDialog::ExportCase ExportConfigsDialog::archive_filament_bundle_to_
                 BOOST_LOG_TRIVIAL(info) << "Filament preset json add successful: " << filament_preset->name;
             }
             
-            for (const std::pair<std::string, json>& vendor_name_to_json : vendor_structure) {
+            for (const auto& vendor_name_to_json : vendor_structure) {
                 json j;
                 std::string printer_vendor = vendor_name_to_json.first;
                 j["vendor"]                = printer_vendor;

src/slic3r/GUI/Plater.cpp

@@ -9466,21 +9466,21 @@ void Plater::_calib_pa_pattern(const Calib_Params& params)
         print_config.set_key_value( "travel_jerk", new ConfigOptionFloat(jerk));
     }
     
-    for (const auto opt : SuggestedConfigCalibPAPattern().float_pairs) {
+    for (const auto& opt : SuggestedConfigCalibPAPattern().float_pairs) {
         print_config.set_key_value(
             opt.first,
             new ConfigOptionFloat(opt.second)
         );
     }
 
-    for (const auto opt : SuggestedConfigCalibPAPattern().nozzle_ratio_pairs) {
+    for (const auto& opt : SuggestedConfigCalibPAPattern().nozzle_ratio_pairs) {
         print_config.set_key_value(
             opt.first,
             new ConfigOptionFloatOrPercent(nozzle_diameter * opt.second / 100, false)
         );
     }
 
-    for (const auto opt : SuggestedConfigCalibPAPattern().int_pairs) {
+    for (const auto& opt : SuggestedConfigCalibPAPattern().int_pairs) {
         print_config.set_key_value(
             opt.first,
             new ConfigOptionInt(opt.second)

src/slic3r/GUI/Search.cpp

@@ -866,7 +866,7 @@ void SearchDialog::msw_rescale()
 SearchListModel::SearchListModel(wxWindow *parent) : wxDataViewVirtualListModel(0)
 {
     int icon_id = 0;
-    for (const std::string &icon : {"cog", "printer", "printer", "spool", "blank_16"}) m_icon[icon_id++] = ScalableBitmap(parent, icon);
+    for (const std::string icon : {"cog", "printer", "printer", "spool", "blank_16"}) m_icon[icon_id++] = ScalableBitmap(parent, icon);
 }
 
 void SearchListModel::Clear()

src/slic3r/GUI/StatusPanel.cpp

@@ -4846,7 +4846,7 @@ wxBoxSizer *ScoreDialog::get_photo_btn_sizer() {
                 it = m_selected_image_list.erase(it);
             }
             m_image_url_paths.clear();
-            for (const std::pair<wxStaticBitmap *, ImageMsg> &bitmap : m_image) {
+            for (const auto& bitmap : m_image) {
                 if (bitmap.second.is_uploaded) {
                     if (!bitmap.second.img_url_paths.empty()) {
                         m_image_url_paths.push_back(bitmap.second.img_url_paths);

src/slic3r/GUI/WebGuideDialog.cpp

@@ -858,7 +858,7 @@ bool GuideFrame::apply_config(AppConfig *app_config, PresetBundle *preset_bundle
 
         const std::map<std::string, std::set<std::string>>& model_maps = config->second;
         //for (const auto& vendor_profile : preset_bundle->vendors) {
-        for (const auto model_it: model_maps) {
+        for (const auto& model_it: model_maps) {
             if (model_it.second.size() > 0) {
                 variant = *model_it.second.begin();
                 const auto config_old = old_enabled_vendors.find(bundle_name);

src/slic3r/Utils/CalibUtils.cpp

@@ -618,7 +618,7 @@ void CalibUtils::calib_pa_pattern(const CalibInfo &calib_info, Model& model)
 
     float nozzle_diameter = printer_config.option<ConfigOptionFloats>("nozzle_diameter")->get_at(0);
 
-    for (const auto opt : SuggestedConfigCalibPAPattern().float_pairs) {
+    for (const auto& opt : SuggestedConfigCalibPAPattern().float_pairs) {
         print_config.set_key_value(opt.first, new ConfigOptionFloat(opt.second));
     }
 
@@ -627,11 +627,11 @@ void CalibUtils::calib_pa_pattern(const CalibInfo &calib_info, Model& model)
             full_config, print_config.get_abs_value("line_width"),
             print_config.get_abs_value("layer_height"), 0)));
     
-    for (const auto opt : SuggestedConfigCalibPAPattern().nozzle_ratio_pairs) {
+    for (const auto& opt : SuggestedConfigCalibPAPattern().nozzle_ratio_pairs) {
         print_config.set_key_value(opt.first, new ConfigOptionFloat(nozzle_diameter * opt.second / 100));
     }
 
-    for (const auto opt : SuggestedConfigCalibPAPattern().int_pairs) {
+    for (const auto& opt : SuggestedConfigCalibPAPattern().int_pairs) {
         print_config.set_key_value(opt.first, new ConfigOptionInt(opt.second));
     }