Refactor folder (#10475)

Move many third-party components' source codes from the src folder to a new folder called deps_src. The goal is to make the code structure clearer and easier to navigate.

.dockerignore

@@ -24,6 +24,7 @@ install_*
 build_*/
 !build_linux.sh
 SVG
-Dockerfile
-DockerBuild.sh
-DockerRun.sh
+scripts/Dockerfile
+scripts/DockerBuild.sh
+scripts/DockerRun.sh
+scripts/.dockerignore

.github/workflows/build_all.yml

@@ -13,7 +13,7 @@ on:
      - 'localization/**'
      - 'resources/**'
      - ".github/workflows/build_*.yml"
-     - 'flatpak/**'
+     - 'scripts/flatpak/**'
 
   pull_request:
     branches:
@@ -28,7 +28,7 @@ on:
      - 'build_linux.sh'
      - 'build_release_vs2022.bat'
      - 'build_release_macos.sh'
-     - 'flatpak/**'
+     - 'scripts/flatpak/**'
 
   workflow_dispatch: # allows for manual dispatch
     inputs:
@@ -103,7 +103,7 @@ jobs:
     - uses: flathub-infra/flatpak-github-actions/flatpak-builder@master
       with:
         bundle: OrcaSlicer-Linux-flatpak_${{ env.ver }}_${{ matrix.variant.arch }}.flatpak
-        manifest-path: flatpak/io.github.softfever.OrcaSlicer.yml
+        manifest-path: scripts/flatpak/io.github.softfever.OrcaSlicer.yml
         cache: true
         arch: ${{ matrix.variant.arch }}
         upload-artifact: false

.github/workflows/update-translation.yml

@@ -24,7 +24,7 @@ jobs:
 
       - name: Update translation catalog
         run: |
-          ./run_gettext.sh --full
+          ./scripts/run_gettext.sh --full
           git add localization/i18n/*
 
       - name: Commit translation catalog updates

.gitignore

@@ -35,3 +35,4 @@ src/OrcaSlicer-doc/
 **/.flatpak-builder/
 resources/profiles/user/default
 *.code-workspace
+deps_src/build/

Build.PL

@@ -1,132 +0,0 @@
-#!/usr/bin/perl
-
-print "This script is currently used for installing Perl dependenices for running\n";
-print "the libslic3r unit / integration tests through Perl prove.\n";
-print "If you don't plan to run the unit / integration tests, you don't need to\n";
-print "install these dependencies to build and run OrcaSlicer.\n";
-
-use strict;
-use warnings;
-
-use Config;
-use File::Spec;
-
-my %prereqs = qw(
-    Devel::CheckLib                 0
-    ExtUtils::MakeMaker             6.80
-    ExtUtils::ParseXS               3.22
-    ExtUtils::XSpp                  0
-    ExtUtils::XSpp::Cmd             0
-    ExtUtils::CppGuess              0
-    ExtUtils::Typemaps              0
-    ExtUtils::Typemaps::Basic       0
-    File::Basename                  0
-    File::Spec                      0
-    Getopt::Long                    0
-    Module::Build::WithXSpp         0.14
-    Moo                             1.003001
-    POSIX                           0
-    Scalar::Util                    0
-    Test::More                      0
-    IO::Scalar                      0
-    Time::HiRes                     0
-);
-my %recommends = qw(
-    Class::XSAccessor               0
-    Test::Harness                   0
-);
-
-my $sudo    = grep { $_ eq '--sudo' } @ARGV;
-my $nolocal = grep { $_ eq '--nolocal' }  @ARGV;
-
-my @missing_prereqs = ();
-if ($ENV{SLIC3R_NO_AUTO}) {
-    foreach my $module (sort keys %prereqs) {
-        my $version = $prereqs{$module};
-        next if eval "use $module $version; 1";
-        push @missing_prereqs, $module if exists $prereqs{$module};
-        print "Missing prerequisite $module $version\n";
-    }
-    foreach my $module (sort keys %recommends) {
-        my $version = $recommends{$module};
-        next if eval "use $module $version; 1";
-        print "Missing optional $module $version\n";
-    }
-} else {
-    my @try = (
-        $ENV{CPANM} // (),
-        File::Spec->catfile($Config{sitebin}, 'cpanm'),
-        File::Spec->catfile($Config{installscript}, 'cpanm'),
-    );
-    
-    my $cpanm;
-    foreach my $path (@try) {
-        if (-e $path) {  # don't use -x because it fails on Windows
-            $cpanm = $path;
-            last;
-        }
-    }
-    if (!$cpanm) {
-        if ($^O =~ /^(?:darwin|linux)$/ && system(qw(which cpanm)) == 0) {
-            $cpanm = 'cpanm';
-        }
-    }
-    die <<'EOF'
-cpanm was not found. Please install it before running this script.
-
-There are several ways to install cpanm, try one of these:
-
-    apt-get install cpanminus
-    curl -L http://cpanmin.us | perl - --sudo App::cpanminus
-    cpan App::cpanminus
-
-If it is installed in a non-standard location you can do:
-    
-    CPANM=/path/to/cpanm perl Build.PL
-
-EOF
-        if !$cpanm;
-    my @cpanm_args = ();
-    push @cpanm_args, "--sudo" if $sudo;
-
-    # install local::lib without --local-lib otherwise it's not usable afterwards
-    if (!eval "use local::lib qw(local-lib); 1") {
-        my $res = system $cpanm, @cpanm_args, 'local::lib';
-        warn "Warning: local::lib is required. You might need to run the `cpanm --sudo local::lib` command in order to install it.\n"
-            if $res != 0;
-    }
-    
-    push @cpanm_args, ('--local-lib', 'local-lib') if ! $nolocal;
-
-    # make sure our cpanm is updated (old ones don't support the ~ syntax)
-    system $cpanm, @cpanm_args, 'App::cpanminus';
-    
-    my %modules = (%prereqs, %recommends);
-    foreach my $module (sort keys %modules) {
-        my $version = $modules{$module};
-        my @cmd = ($cpanm, @cpanm_args);
-        
-        # temporary workaround for upstream bug in test
-        push @cmd, '--notest'
-            if $module =~ /^(?:OpenGL|Test::Harness)$/;
-        
-        push @cmd, "$module~$version";
-
-        my $res = system @cmd;
-        if ($res != 0) {
-            if (exists $prereqs{$module}) {
-                push @missing_prereqs, $module;
-            } else {
-                printf "Don't worry, this module is optional.\n";
-            }
-        }
-    }
-}
-
-print "\n";
-print "In the next step, you need to build the OrcaSlicer C++ library.\n";
-print "1) Create a build directory and change to it\n";
-print "2) run cmake .. -DCMAKE_BUILD_TYPE=Release\n";
-print "3) run make\n";
-print "4) to execute the automatic tests, run ctest --verbose\n";
-__END__

CLAUDE.md

@@ -8,6 +8,23 @@ OrcaSlicer is an open-source 3D slicer application forked from Bambu Studio, bui
 
 ## Build Commands
 
+### Building on Windows
+```bash
+# Build everything
+build_release_vs2022.bat
+
+# Build with debug symbols
+build_release_vs2022.bat debug
+
+# Build only dependencies
+build_release_vs2022.bat deps
+
+# Build only slicer (after deps are built)
+build_release_vs2022.bat slicer
+
+
+```
+
 ### Building on macOS
 ```bash
 # Build everything (dependencies and slicer)
@@ -23,94 +40,208 @@ OrcaSlicer is an open-source 3D slicer application forked from Bambu Studio, bui
 ./build_release_macos.sh -x
 
 # Build for specific architecture
-./build_release_macos.sh -a arm64    # or x86_64
+./build_release_macos.sh -a arm64    # or x86_64 or universal
+
+# Build for specific macOS version target
+./build_release_macos.sh -t 11.3
 ```
 
 ### Building on Linux
 ```bash
-# Build everything
-./build_linux.sh
+# First time setup - install system dependencies
+./build_linux.sh -u
 
-# Check system resources first (build requires 10GB+ RAM and disk)
-./build_linux.sh -r    # skip resource checks
+# Build dependencies and slicer
+./build_linux.sh -dsi
+
+# Build everything (alternative)
+./build_linux.sh -dsi
+
+# Individual options:
+./build_linux.sh -d    # dependencies only
+./build_linux.sh -s    # slicer only  
+./build_linux.sh -i    # build AppImage
+
+# Performance and debug options:
+./build_linux.sh -j N  # limit to N cores
+./build_linux.sh -1    # single core build
+./build_linux.sh -b    # debug build
+./build_linux.sh -c    # clean build
+./build_linux.sh -r    # skip RAM/disk checks
+./build_linux.sh -l    # use Clang instead of GCC
 ```
 
 ### Build System
-- Uses CMake with minimum version 3.13
+- Uses CMake with minimum version 3.13 (maximum 3.31.x on Windows)
 - Primary build directory: `build/`
 - Dependencies are built in `deps/build/`
 - The build process is split into dependency building and main application building
+- Windows builds use Visual Studio generators
+- macOS builds use Xcode by default, Ninja with -x flag
+- Linux builds use Ninja generator
 
 ### Testing
-Tests are located in the `tests/` directory and can be run via CMake/CTest after building.
+Tests are located in the `tests/` directory and use multiple testing frameworks. Test structure:
+- `tests/libslic3r/` - Core library tests (Catch2 framework)
+- `tests/libnest2d/` - 2D nesting algorithm tests  
+- `tests/fff_print/` - FFF printing tests
+- `tests/sla_print/` - SLA printing tests
+- `tests/t/` - Legacy Perl-based unit tests (.t files)
+- `tests/lib/` - Perl test library modules  
+- `tests/xs/` - XS (C/Perl interface) related tests
+- `tests/sandboxes/` - Experimental/sandbox test code
+
+Run tests after building:
+```bash
+cd build && ctest
+```
+
+Legacy Perl tests can be run individually:
+```bash
+cd tests/t
+perl support.t  # example test file
+```
 
 ## Architecture
 
 ### Core Libraries
-- **libslic3r/**: Core slicing engine and algorithms
-  - Contains the main slicing logic, geometry processing, G-code generation
-  - Platform-independent slicing functionality
+- **libslic3r/**: Core slicing engine and algorithms (platform-independent)
+  - Main slicing logic, geometry processing, G-code generation
   - Key classes: Print, PrintObject, Layer, GCode, Config
+  - Modular design with specialized subdirectories:
+    - `GCode/` - G-code generation, cooling, pressure equalization, thumbnails
+    - `Fill/` - Infill pattern implementations (gyroid, honeycomb, lightning, etc.)
+    - `Support/` - Tree supports and traditional support generation
+    - `Geometry/` - Advanced geometry operations, Voronoi diagrams, medial axis
+    - `Format/` - File I/O for 3MF, AMF, STL, OBJ, STEP formats
+    - `SLA/` - SLA-specific print processing and support generation
+    - `Arachne/` - Advanced wall generation using skeletal trapezoidation
 
-- **src/slic3r/**: Main application framework
-  - GUI application entry points and main loops
-  - Integration between libslic3r and the GUI
+- **src/slic3r/**: Main application framework and GUI
+  - GUI application built with wxWidgets
+  - Integration between libslic3r core and user interface
+  - Located in `src/slic3r/GUI/` (not shown in this directory but exists)
 
-### GUI Components
-- Built with wxWidgets framework
-- Located primarily in `src/slic3r/GUI/`
-- Main application class: `GUI_App`
-- Uses OpenGL for 3D visualization
+### Key Algorithmic Components
+- **Arachne Wall Generation**: Variable-width perimeter generation using skeletal trapezoidation
+- **Tree Supports**: Organic support generation algorithm  
+- **Lightning Infill**: Sparse infill optimization for internal structures
+- **Adaptive Slicing**: Variable layer height based on geometry
+- **Multi-material**: Multi-extruder and soluble support processing
+- **G-code Post-processing**: Cooling, fan control, pressure advance, conflict checking
 
-### Key Modules
-- **3MF Format Support**: `src/libslic3r/Format/3mf.cpp` - 3MF file format reading/writing
-- **G-code Processing**: `src/libslic3r/GCode/` - G-code generation and processing
-- **Geometry**: `src/libslic3r/Geometry.cpp` - 2D/3D geometry operations
-- **Print Configuration**: `src/libslic3r/PrintConfig.cpp` - Print settings and presets
-- **Model Handling**: `src/libslic3r/Model.cpp` - 3D model representation and manipulation
+### File Format Support
+- **3MF/BBS_3MF**: Native format with extensions for multi-material and metadata
+- **STL**: Standard tessellation language for 3D models
+- **AMF**: Additive Manufacturing Format with color/material support  
+- **OBJ**: Wavefront OBJ with material definitions
+- **STEP**: CAD format support for precise geometry
+- **G-code**: Output format with extensive post-processing capabilities
 
 ### External Dependencies
-- **Clipper**: 2D polygon clipping operations
-- **libigl**: Geometry processing library
-- **OpenVDB**: Voxel data structures (optional)
-- **TBB**: Threading Building Blocks for parallelization
-- **wxWidgets**: Cross-platform GUI toolkit
-- **OpenGL**: 3D graphics rendering
+- **Clipper2**: Advanced 2D polygon clipping and offsetting
+- **libigl**: Computational geometry library for mesh operations
+- **TBB**: Intel Threading Building Blocks for parallelization
+- **wxWidgets**: Cross-platform GUI framework
+- **OpenGL**: 3D graphics rendering and visualization
+- **CGAL**: Computational Geometry Algorithms Library (selective use)
+- **OpenVDB**: Volumetric data structures for advanced operations
+- **Eigen**: Linear algebra library for mathematical operations
 
 ## File Organization
 
-### Configuration and Profiles
-- `resources/profiles/`: Printer and material profiles organized by manufacturer
-- `resources/printers/`: Printer-specific configurations and G-code templates
+### Resources and Configuration
+- `resources/profiles/` - Printer and material profiles organized by manufacturer
+- `resources/printers/` - Printer-specific configurations and G-code templates  
+- `resources/images/` - UI icons, logos, calibration images
+- `resources/calib/` - Calibration test patterns and data
+- `resources/handy_models/` - Built-in test models (benchy, calibration cubes)
 
-### Internationalization
-- `localization/i18n/`: Translation files
-- `resources/i18n/`: Runtime language resources
+### Internationalization and Localization  
+- `localization/i18n/` - Source translation files (.pot, .po)
+- `resources/i18n/` - Runtime language resources
+- Translation managed via `scripts/run_gettext.sh` / `scripts/run_gettext.bat`
 
 ### Platform-Specific Code
-- Platform abstractions in `src/libslic3r/Platform.cpp`
-- macOS-specific utilities in `src/libslic3r/MacUtils.mm`
+- `src/libslic3r/Platform.cpp` - Platform abstractions and utilities
+- `src/libslic3r/MacUtils.mm` - macOS-specific utilities (Objective-C++)
+- Windows-specific build scripts and configurations
+- Linux distribution support scripts in `scripts/linux.d/`
+
+### Build and Development Tools
+- `cmake/modules/` - Custom CMake find modules and utilities
+- `scripts/` - Python utilities for profile generation and validation  
+- `tools/` - Windows build tools (gettext utilities)
+- `deps/` - External dependency build configurations
 
 ## Development Workflow
 
-### Code Style
-- C++17 standard
-- Use existing patterns found in libslic3r for consistency
-- Follow existing naming conventions (PascalCase for classes, snake_case for functions)
+### Code Style and Standards
+- **C++17 standard** with selective C++20 features
+- **Naming conventions**: PascalCase for classes, snake_case for functions/variables
+- **Header guards**: Use `#pragma once` 
+- **Memory management**: Prefer smart pointers, RAII patterns
+- **Thread safety**: Use TBB for parallelization, be mindful of shared state
 
-### Common Tasks
-- **Adding new print settings**: Extend `PrintConfig.cpp` and related GUI components
-- **Modifying slicing algorithms**: Work in `libslic3r/` core modules
-- **GUI changes**: Modify components in `src/slic3r/GUI/`
-- **Adding printer support**: Add profiles in `resources/profiles/`
+### Common Development Tasks
 
-### Dependencies Management
-Dependencies are managed through CMake and built separately from the main application. The `deps/` directory contains dependency build configurations.
+#### Adding New Print Settings
+1. Define setting in `PrintConfig.cpp` with proper bounds and defaults
+2. Add UI controls in appropriate GUI components  
+3. Update serialization in config save/load
+4. Add tooltips and help text for user guidance
+5. Test with different printer profiles
 
-## Important Notes
+#### Modifying Slicing Algorithms  
+1. Core algorithms live in `libslic3r/` subdirectories
+2. Performance-critical code should be profiled and optimized
+3. Consider multi-threading implications (TBB integration)
+4. Validate changes don't break existing profiles
+5. Add regression tests where appropriate
 
-- The codebase is large and complex - use search tools to navigate effectively
-- Many algorithms are performance-critical - consider computational complexity
-- The project maintains backward compatibility with various file formats
-- Cross-platform compatibility is important (Windows, macOS, Linux)
-- The GUI uses a custom theming system supporting light/dark modes
+#### GUI Development
+1. GUI code resides in `src/slic3r/GUI/` (not visible in current tree)
+2. Use existing wxWidgets patterns and custom controls
+3. Support both light and dark themes
+4. Consider DPI scaling on high-resolution displays
+5. Maintain cross-platform compatibility
+
+#### Adding Printer Support
+1. Create JSON profile in `resources/profiles/[manufacturer].json`
+2. Add printer-specific start/end G-code templates
+3. Configure build volume, capabilities, and material compatibility
+4. Test thoroughly with actual hardware when possible
+5. Follow existing profile structure and naming conventions
+
+### Dependencies and Build System
+- **CMake-based** with separate dependency building phase
+- **Dependencies** built once in `deps/build/`, then linked to main application  
+- **Cross-platform** considerations important for all changes
+- **Resource files** embedded at build time, platform-specific handling
+
+### Performance Considerations
+- **Slicing algorithms** are CPU-intensive, profile before optimizing
+- **Memory usage** can be substantial with complex models
+- **Multi-threading** extensively used via TBB
+- **File I/O** optimized for large 3MF files with embedded textures
+- **Real-time preview** requires efficient mesh processing
+
+## Important Development Notes
+
+### Codebase Navigation
+- Use search tools extensively - codebase has 500k+ lines
+- Key entry points: `src/OrcaSlicer.cpp` for application startup
+- Core slicing: `libslic3r/Print.cpp` orchestrates the slicing pipeline
+- Configuration: `PrintConfig.cpp` defines all print/printer/material settings
+
+### Compatibility and Stability
+- **Backward compatibility** maintained for project files and profiles
+- **Cross-platform** support essential (Windows/macOS/Linux)  
+- **File format** changes require careful version handling
+- **Profile migrations** needed when settings change significantly
+
+### Quality and Testing
+- **Regression testing** important due to algorithm complexity
+- **Performance benchmarks** help catch performance regressions
+- **Memory leak** detection important for long-running GUI application
+- **Cross-platform** testing required before releases

CMakeLists.txt

@@ -412,7 +412,7 @@ message(STATUS "LIBDIR_BIN: ${LIBDIR_BIN}")
 # For the bundled boost libraries (boost::nowide)
 include_directories(SYSTEM ${LIBDIR})
 # For generated header files
-include_directories(SYSTEM ${LIBDIR_BIN}/platform)
+include_directories(SYSTEM ${LIBDIR_BIN}/dev-utils/platform)
 # For ligigl
 include_directories(SYSTEM ${LIBDIR}/libigl)
 
@@ -796,6 +796,7 @@ endfunction()
 
 
 # libslic3r, OrcaSlicer GUI and the OrcaSlicer executable.
+add_subdirectory(deps_src)
 add_subdirectory(src)
 set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT OrcaSlicer_app_gui)
 
@@ -818,7 +819,7 @@ endif()
 
 if (NOT WIN32 AND NOT APPLE)
     set(SLIC3R_APP_CMD "orca-slicer")
-    configure_file(${LIBDIR}/platform/unix/build_appimage.sh.in ${CMAKE_CURRENT_BINARY_DIR}/build_appimage.sh USE_SOURCE_PERMISSIONS @ONLY)
+    configure_file(${LIBDIR}/dev-utils/platform/unix/build_appimage.sh.in ${CMAKE_CURRENT_BINARY_DIR}/build_appimage.sh USE_SOURCE_PERMISSIONS @ONLY)
 endif()
 
 option(BUILD_BBS_TEST_TOOLS          "Build bbs test tools" OFF)
@@ -839,7 +840,7 @@ elseif (SLIC3R_FHS)
     install(DIRECTORY ${SLIC3R_RESOURCES_DIR}/ DESTINATION ${SLIC3R_FHS_RESOURCES}
         PATTERN "*/udev" EXCLUDE
     )
-    install(FILES src/platform/unix/OrcaSlicer.desktop DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/applications)
+    install(FILES src/dev-utils/platform/unix/OrcaSlicer.desktop DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/applications)
     foreach(SIZE 32 128 192)
         install(FILES ${SLIC3R_RESOURCES_DIR}/images/OrcaSlicer_${SIZE}px.png
             DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/icons/hicolor/${SIZE}x${SIZE}/apps RENAME OrcaSlicer.png
@@ -848,12 +849,12 @@ elseif (SLIC3R_FHS)
 elseif (CMAKE_MACOSX_BUNDLE)
     # install(DIRECTORY "${SLIC3R_RESOURCES_DIR}/" DESTINATION "${CMAKE_INSTALL_PREFIX}/OrcaSlicer.app/Contents/resources")
 else ()
-    install(FILES src/platform/unix/OrcaSlicer.desktop DESTINATION ${CMAKE_INSTALL_PREFIX}/resources/applications)
+    install(FILES src/dev-utils/platform/unix/OrcaSlicer.desktop DESTINATION ${CMAKE_INSTALL_PREFIX}/resources/applications)
     install(DIRECTORY "${SLIC3R_RESOURCES_DIR}/" DESTINATION "${CMAKE_INSTALL_PREFIX}/resources")
 endif ()
 
 install(FILES ${CMAKE_SOURCE_DIR}/LICENSE.txt DESTINATION ".")
-configure_file(${LIBDIR}/platform/unix/fhs.hpp.in ${LIBDIR_BIN}/platform/unix/fhs.hpp)
+configure_file(${LIBDIR}/dev-utils/platform/unix/fhs.hpp.in ${LIBDIR_BIN}/dev-utils/platform/unix/fhs.hpp)
 
 set (CPACK_PACKAGE_NAME "OrcaSlicer")
 set (CPACK_PACKAGE_VENDOR "SoftFever")

build_flatpak.sh

@@ -0,0 +1,341 @@
+#!/bin/bash
+
+# OrcaSlicer Flatpak Build Script
+# This script builds and packages OrcaSlicer as a Flatpak package locally
+# Based on the GitHub Actions workflow in .github/workflows/build_all.yml
+
+set -e
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# Default values
+ARCH=$(uname -m)
+BUILD_DIR="build_flatpak"
+CLEANUP=false
+INSTALL_RUNTIME=false
+JOBS=$(nproc)
+FORCE_CLEAN=false
+ENABLE_CCACHE=false
+CACHE_DIR=".flatpak-builder"
+
+# Help function
+show_help() {
+    echo "Usage: $0 [OPTIONS]"
+    echo ""
+    echo "Build OrcaSlicer as a Flatpak package"
+    echo ""
+    echo "Options:"
+    echo "  -a, --arch ARCH        Target architecture (x86_64, aarch64) [default: $ARCH]"
+    echo "  -d, --build-dir DIR    Build directory [default: $BUILD_DIR]"
+    echo "  -j, --jobs JOBS        Number of parallel build jobs for flatpak-builder and modules [default: $JOBS]"
+    echo "  -c, --cleanup          Clean build directory before building"
+    echo "  -f, --force-clean      Force clean build (disables caching)"
+    echo "  --ccache               Enable ccache for faster rebuilds (requires ccache in SDK)"
+    echo "  --cache-dir DIR        Flatpak builder cache directory [default: $CACHE_DIR]"
+    echo "  -i, --install-runtime  Install required Flatpak runtime and SDK"
+    echo "  -h, --help             Show this help message"
+    echo ""
+    echo "Examples:"
+    echo "  $0                     # Build for current architecture with caching enabled"
+    echo "  $0 -f                  # Force clean build (no caching)"
+    echo "  $0 --ccache -j 8       # Use ccache and 8 parallel jobs for faster builds"
+    echo "  $0 -a x86_64 -c       # Build for x86_64 and cleanup first"
+    echo "  $0 -i -j 16 --ccache  # Install runtime, build with 16 jobs and ccache"
+}
+
+# Parse command line arguments
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        -a|--arch)
+            ARCH="$2"
+            shift 2
+            ;;
+        -d|--build-dir)
+            BUILD_DIR="$2"
+            shift 2
+            ;;
+        -j|--jobs)
+            JOBS="$2"
+            shift 2
+            ;;
+        -c|--cleanup)
+            CLEANUP=true
+            shift
+            ;;
+        -f|--force-clean)
+            FORCE_CLEAN=true
+            shift
+            ;;
+        --ccache)
+            ENABLE_CCACHE=true
+            shift
+            ;;
+        --cache-dir)
+            CACHE_DIR="$2"
+            shift 2
+            ;;
+        -i|--install-runtime)
+            INSTALL_RUNTIME=true
+            shift
+            ;;
+        -h|--help)
+            show_help
+            exit 0
+            ;;
+        *)
+            echo -e "${RED}Error: Unknown option $1${NC}"
+            show_help
+            exit 1
+            ;;
+    esac
+done
+
+# Validate architecture
+if [[ "$ARCH" != "x86_64" && "$ARCH" != "aarch64" ]]; then
+    echo -e "${RED}Error: Unsupported architecture '$ARCH'. Supported: x86_64, aarch64${NC}"
+    exit 1
+fi
+
+# Validate jobs parameter
+if ! [[ "$JOBS" =~ ^[1-9][0-9]*$ ]]; then
+    echo -e "${RED}Error: Jobs must be a positive integer, got '$JOBS'${NC}"
+    exit 1
+fi
+
+echo -e "${BLUE}OrcaSlicer Flatpak Build Script${NC}"
+echo -e "${BLUE}================================${NC}"
+echo -e "Architecture: ${GREEN}$ARCH${NC}"
+echo -e "Build directory: ${GREEN}$BUILD_DIR${NC}"
+echo -e "Cache directory: ${GREEN}$CACHE_DIR${NC}"
+echo -e "Parallel jobs: ${GREEN}$JOBS${NC}"
+if [[ "$FORCE_CLEAN" == true ]]; then
+    echo -e "Cache mode: ${RED}DISABLED (force clean)${NC}"
+else
+    echo -e "Cache mode: ${GREEN}ENABLED${NC}"
+fi
+if [[ "$ENABLE_CCACHE" == true ]]; then
+    echo -e "Ccache: ${GREEN}ENABLED${NC}"
+else
+    echo -e "Ccache: ${YELLOW}DISABLED${NC}"
+fi
+echo ""
+
+# Check available disk space (flatpak builds need several GB)
+AVAILABLE_SPACE=$(df . | awk 'NR==2 {print $4}')
+REQUIRED_SPACE=$((5 * 1024 * 1024))  # 5GB in KB
+
+if [[ $AVAILABLE_SPACE -lt $REQUIRED_SPACE ]]; then
+    echo -e "${YELLOW}Warning: Low disk space detected.${NC}"
+    echo -e "Available: $(( AVAILABLE_SPACE / 1024 / 1024 ))GB, Recommended: 5GB+"
+    echo -e "Continue anyway? (y/N)"
+    read -r response
+    if [[ ! "$response" =~ ^[Yy]$ ]]; then
+        echo "Build cancelled by user"
+        exit 1
+    fi
+fi
+
+# Check if flatpak is installed
+if ! command -v flatpak &> /dev/null; then
+    echo -e "${RED}Error: Flatpak is not installed. Please install it first.${NC}"
+    echo "On Ubuntu/Debian: sudo apt install flatpak"
+    echo "On Fedora: sudo dnf install flatpak"
+    echo "On Arch: sudo pacman -S flatpak"
+    exit 1
+fi
+
+# Check if flatpak-builder is installed
+if ! command -v flatpak-builder &> /dev/null; then
+    echo -e "${RED}Error: flatpak-builder is not installed. Please install it first.${NC}"
+    echo "On Ubuntu/Debian: sudo apt install flatpak-builder"
+    echo "On Fedora: sudo dnf install flatpak-builder"
+    echo "On Arch: sudo pacman -S flatpak-builder"
+    exit 1
+fi
+
+# Check additional build dependencies
+echo -e "${YELLOW}Checking build dependencies...${NC}"
+MISSING_DEPS=()
+
+if ! command -v cmake &> /dev/null; then
+    MISSING_DEPS+=("cmake")
+fi
+
+if ! command -v ninja &> /dev/null && ! command -v make &> /dev/null; then
+    MISSING_DEPS+=("ninja or make")
+fi
+
+if ! command -v pkg-config &> /dev/null; then
+    MISSING_DEPS+=("pkg-config")
+fi
+
+if [ ${#MISSING_DEPS[@]} -ne 0 ]; then
+    echo -e "${RED}Error: Missing required build dependencies: ${MISSING_DEPS[*]}${NC}"
+    echo "On Ubuntu/Debian: sudo apt install cmake ninja-build pkg-config"
+    echo "On Fedora: sudo dnf install cmake ninja-build pkgconfig"
+    exit 1
+fi
+
+echo -e "${GREEN}All required dependencies found${NC}"
+
+# Install runtime and SDK if requested
+if [[ "$INSTALL_RUNTIME" == true ]]; then
+    echo -e "${YELLOW}Installing GNOME runtime and SDK...${NC}"
+    flatpak install --user -y flathub org.gnome.Platform//47
+    flatpak install --user -y flathub org.gnome.Sdk//47
+fi
+
+# Check if required runtime is available
+if ! flatpak info --user org.gnome.Platform//47 &> /dev/null; then
+    echo -e "${RED}Error: GNOME Platform 47 runtime is not installed.${NC}"
+    echo "Run with -i flag to install it automatically, or install manually:"
+    echo "flatpak install --user flathub org.gnome.Platform//47"
+    exit 1
+fi
+
+if ! flatpak info --user org.gnome.Sdk//47 &> /dev/null; then
+    echo -e "${RED}Error: GNOME SDK 47 is not installed.${NC}"
+    echo "Run with -i flag to install it automatically, or install manually:"
+    echo "flatpak install --user flathub org.gnome.Sdk//47"
+    exit 1
+fi
+
+# Get version information
+echo -e "${YELLOW}Getting version information...${NC}"
+if [[ -f "version.inc" ]]; then
+    VER_PURE=$(grep 'set(SoftFever_VERSION' version.inc | cut -d '"' -f2)
+    VER="V$VER_PURE"
+    DATE=$(date +'%Y%m%d')
+    echo -e "Version: ${GREEN}$VER${NC}"
+    echo -e "Date: ${GREEN}$DATE${NC}"
+else
+    echo -e "${RED}Error: version.inc not found${NC}"
+    exit 1
+fi
+
+# Cleanup build directory if requested
+if [[ "$CLEANUP" == true ]]; then
+    echo -e "${YELLOW}Cleaning up flatpak-specific build directories...${NC}"
+    rm -rf deps/build_flatpak build_flatpak
+
+    echo -e "${YELLOW}Cleaning up flatpak build directories...${NC}"
+    rm -rf "$BUILD_DIR"
+    
+    # Only clean cache if force-clean is enabled
+    if [[ "$FORCE_CLEAN" == true ]]; then
+        echo -e "${YELLOW}Cleaning up flatpak build cache...${NC}"
+        rm -rf "$CACHE_DIR"
+    else
+        echo -e "${BLUE}Preserving build cache at: $CACHE_DIR${NC}"
+    fi
+    
+    echo -e "${BLUE}Note: Host build directories (deps/build, build) are preserved${NC}"
+fi
+
+# Create build directory
+mkdir -p "$BUILD_DIR"
+rm -rf "$BUILD_DIR/build-dir"
+
+# Check if flatpak manifest exists
+if [[ ! -f "./scripts/flatpak/io.github.softfever.OrcaSlicer.yml" ]]; then
+    echo -e "${RED}Error: Flatpak manifest not found at scripts/flatpak/io.github.softfever.OrcaSlicer.yml${NC}"
+    exit 1
+fi
+
+# Build the Flatpak
+echo -e "${YELLOW}Building Flatpak package...${NC}"
+echo -e "This may take a while (30+ minutes depending on your system)..."
+echo ""
+
+BUNDLE_NAME="OrcaSlicer-Linux-flatpak_${VER}_${ARCH}.flatpak"
+
+# Remove any existing bundle
+rm -f "$BUNDLE_NAME"
+
+# Create necessary directories inside repo
+mkdir -p "$BUILD_DIR/cache" "$BUILD_DIR/flatpak-builder"
+
+# Set environment variables to match GitHub Actions
+export FLATPAK_BUILDER_N_JOBS=$JOBS
+
+echo -e "${BLUE}Running flatpak-builder...${NC}"
+echo -e "Using $JOBS parallel jobs for flatpak-builder and $FLATPAK_BUILDER_N_JOBS for module builds"
+
+# Check flatpak-builder version to determine available options
+FLATPAK_BUILDER_VERSION=$(flatpak-builder --version 2>/dev/null | head -1 | awk '{print $2}' || echo "unknown")
+echo -e "flatpak-builder version: $FLATPAK_BUILDER_VERSION"
+
+# Build command with caching support
+BUILDER_ARGS=(
+    --arch="$ARCH"
+    --user
+    --install-deps-from=flathub
+    --repo="$BUILD_DIR/repo"
+    --verbose
+    --state-dir="$CACHE_DIR"
+    --jobs="$JOBS"
+)
+
+# Add force-clean only if explicitly requested (disables caching)
+if [[ "$FORCE_CLEAN" == true ]]; then
+    BUILDER_ARGS+=(--force-clean)
+    echo -e "${YELLOW}Using --force-clean (caching disabled)${NC}"
+else
+    echo -e "${GREEN}Using build cache for faster rebuilds${NC}"
+fi
+
+# Add ccache if enabled
+if [[ "$ENABLE_CCACHE" == true ]]; then
+    BUILDER_ARGS+=(--ccache)
+    echo -e "${GREEN}Using ccache for compiler caching${NC}"
+fi
+
+if ! flatpak-builder \
+    "${BUILDER_ARGS[@]}" \
+    "$BUILD_DIR/build-dir" \
+    scripts/flatpak/io.github.softfever.OrcaSlicer.yml; then
+    echo -e "${RED}Error: flatpak-builder failed${NC}"
+    echo -e "${YELLOW}Check the build log above for details${NC}"
+    exit 1
+fi
+
+# Create bundle
+echo -e "${YELLOW}Creating Flatpak bundle...${NC}"
+if ! flatpak build-bundle \
+    "$BUILD_DIR/repo" \
+    "$BUNDLE_NAME" \
+    io.github.softfever.OrcaSlicer \
+    --arch="$ARCH"; then
+    echo -e "${RED}Error: Failed to create Flatpak bundle${NC}"
+    exit 1
+fi
+
+# Success message
+echo ""
+echo -e "${GREEN}✓ Flatpak build completed successfully!${NC}"
+echo -e "Bundle created: ${GREEN}$BUNDLE_NAME${NC}"
+echo -e "Size: ${GREEN}$(du -h "$BUNDLE_NAME" | cut -f1)${NC}"
+if [[ "$FORCE_CLEAN" != true ]]; then
+    echo -e "Build cache: ${GREEN}$CACHE_DIR${NC} (preserved for faster future builds)"
+fi
+echo ""
+echo -e "${BLUE}To install the Flatpak:${NC}"
+echo -e "flatpak install --user $BUNDLE_NAME"
+echo ""
+echo -e "${BLUE}To run OrcaSlicer:${NC}"
+echo -e "flatpak run io.github.softfever.OrcaSlicer"
+echo ""
+echo -e "${BLUE}To uninstall:${NC}"
+echo -e "flatpak uninstall --user io.github.softfever.OrcaSlicer"
+echo ""
+if [[ "$FORCE_CLEAN" != true ]]; then
+    echo -e "${BLUE}Cache Management:${NC}"
+    echo -e "• Subsequent builds will be faster thanks to caching"
+    echo -e "• To force a clean build: $0 -f"
+    echo -e "• To clean cache manually: rm -rf $CACHE_DIR"
+fi

build_linux.sh

@@ -115,13 +115,13 @@ elif [[ "${DISTRIBUTION_LIKE}" == *"arch"* ]] ; then
     DISTRIBUTION="arch"
 fi
 
-if [ ! -f ./linux.d/${DISTRIBUTION} ] ; then
-    echo "Your distribution \"${DISTRIBUTION}\" is not supported by system-dependency scripts in ./linux.d/"
+if [ ! -f ./scripts/linux.d/${DISTRIBUTION} ] ; then
+    echo "Your distribution \"${DISTRIBUTION}\" is not supported by system-dependency scripts in ./scripts/linux.d/"
     echo "Please resolve dependencies manually and contribute a script for your distribution to upstream."
     exit 1
 else
     echo "resolving system dependencies for distribution \"${DISTRIBUTION}\" ..."
-    source ./linux.d/${DISTRIBUTION}
+    source ./scripts/linux.d/${DISTRIBUTION}
 fi
 
 echo "FOUND_GTK3=${FOUND_GTK3}"
@@ -189,7 +189,7 @@ if [[ -n "${BUILD_ORCA}" ]] ; then
         BUILD_ARGS="${BUILD_ARGS} -DBBL_RELEASE_TO_PUBLIC=1 -DBBL_INTERNAL_TESTING=0"
     fi
 
-    CMAKE_CMD="cmake -S . -B build ${CMAKE_C_CXX_COMPILER_CLANG} -G Ninja \
+    CMAKE_CMD="cmake -S . -B build ${CMAKE_C_CXX_COMPILER_CLANG} -G Ninja Multi-Config \
 -DSLIC3R_PCH=${SLIC3R_PRECOMPILED_HEADERS} \
 -DCMAKE_PREFIX_PATH="${SCRIPT_PATH}/deps/build/destdir/usr/local" \
 -DSLIC3R_STATIC=1 \
@@ -203,7 +203,7 @@ ${BUILD_ARGS}"
     cmake --build build --target OrcaSlicer
     echo "Building OrcaSlicer_profile_validator .."
     cmake --build build --target OrcaSlicer_profile_validator
-    ./run_gettext.sh
+    ./scripts/run_gettext.sh
     echo "done"
 fi
 

build_release.bat

@@ -45,6 +45,6 @@ echo cmake .. -G "Visual Studio 16 2019" -A x64 -DBBL_RELEASE_TO_PUBLIC=1 -DCMAK
 cmake .. -G "Visual Studio 16 2019" -A x64 -DBBL_RELEASE_TO_PUBLIC=1 -DCMAKE_PREFIX_PATH="%DEPS%/usr/local" -DCMAKE_INSTALL_PREFIX="./OrcaSlicer" -DCMAKE_BUILD_TYPE=%build_type% -DWIN10SDK_PATH="C:/Program Files (x86)/Windows Kits/10/Include/10.0.19041.0"
 cmake --build . --config %build_type% --target ALL_BUILD -- -m
 cd ..
-call run_gettext.bat
+call scripts/run_gettext.bat
 cd %build_dir%
 cmake --build . --target install --config %build_type%

build_release_macos.sh

@@ -189,7 +189,7 @@ function build_slicer() {
         echo "Verify localization with gettext..."
         (
             cd "$PROJECT_DIR"
-            ./run_gettext.sh
+            ./scripts/run_gettext.sh
         )
 
         echo "Fix macOS app package..."

build_release_vs2022.bat

@@ -62,6 +62,6 @@ cmake .. -G "Visual Studio 17 2022" -A x64 -DBBL_RELEASE_TO_PUBLIC=1 -DORCA_TOOL
 cmake --build . --config %build_type% --target ALL_BUILD -- -m
 @echo off
 cd ..
-call run_gettext.bat
+call scripts/run_gettext.bat
 cd %build_dir%
 cmake --build . --target install --config %build_type%

cmake/modules/FindOpenVDB.cmake

@@ -123,7 +123,7 @@ if (OPENVDB_FIND_MODULE_PATH)
 endif ()
 # ###########################################################################
 
-cmake_minimum_required(VERSION 3.3)
+cmake_minimum_required(VERSION 3.13)
 # Monitoring <PackageName>_ROOT variables
 if(POLICY CMP0074)
   cmake_policy(SET CMP0074 NEW)

deps/wxWidgets/wxWidgets.cmake

@@ -18,7 +18,7 @@ else ()
 endif ()
 
 # Note: The flatpak build builds wxwidgets separately due to CI size constraints.
-# ANY CHANGES MADE IN HERE MUST ALSO BE REFLECTED IN `flatpak/io.github.SoftFever.OrcaSlicer.yml`.
+# ANY CHANGES MADE IN HERE MUST ALSO BE REFLECTED IN `scripts/flatpak/io.github.SoftFever.OrcaSlicer.yml`.
 # ** THIS INCLUDES BUILD ARGS. **
 # ...if you can find a way around this size limitation, be my guest.
 

deps_src/CMakeLists.txt

@@ -0,0 +1,35 @@
+cmake_minimum_required(VERSION 3.13)
+project(deps_src)
+
+# Include all dependency subdirectories
+
+# Header-only libraries (INTERFACE)
+add_subdirectory(agg)
+add_subdirectory(ankerl)
+add_subdirectory(fast_float)
+add_subdirectory(nanosvg)
+add_subdirectory(nlohmann)
+add_subdirectory(spline)      # Header-only spline library
+add_subdirectory(stb_dxt)     # Header-only STB DXT compression library
+
+# Static libraries
+add_subdirectory(Shiny)
+add_subdirectory(admesh)
+add_subdirectory(clipper)
+add_subdirectory(expat)
+add_subdirectory(glu-libtess)
+add_subdirectory(hidapi)
+add_subdirectory(hints)        # Hints library with utility executable
+add_subdirectory(imgui)
+add_subdirectory(imguizmo)
+add_subdirectory(libigl)
+add_subdirectory(libnest2d)
+add_subdirectory(mcut)
+add_subdirectory(miniz)
+add_subdirectory(minilzo)
+add_subdirectory(qhull)
+add_subdirectory(qoi)
+add_subdirectory(semver)      # Semver static library
+
+# Eigen header-only library
+add_subdirectory(eigen)

deps_src/README_CMAKE_INTERFACES.md

@@ -0,0 +1,119 @@
+# CMake Interfaces for deps_src Libraries
+
+This document describes how to use the CMake interface libraries created for the subdirectories in `deps_src/`.
+
+## Available Libraries
+
+### 1. **semver** (Static Library)
+- **Type**: Static library
+- **Target**: `semver` or `semver::semver`
+- **Headers**: `semver.h`
+- **Usage**:
+```cmake
+target_link_libraries(your_target PRIVATE semver)
+# or
+target_link_libraries(your_target PRIVATE semver::semver)
+```
+
+### 2. **hints** (Interface Library)
+- **Type**: Interface library (header-only)
+- **Target**: `hints`
+- **Utility**: `hintsToPot` executable
+- **Usage**:
+```cmake
+target_link_libraries(your_target PRIVATE hints)
+```
+
+### 3. **spline** (Interface Library)
+- **Type**: Interface library (header-only)
+- **Target**: `spline` or `spline::spline`
+- **Headers**: `spline.h`
+- **Usage**:
+```cmake
+target_link_libraries(your_target PRIVATE spline)
+# or
+target_link_libraries(your_target PRIVATE spline::spline)
+```
+
+### 4. **stb_dxt** (Interface Library)
+- **Type**: Interface library (header-only)
+- **Target**: `stb_dxt` or `stb_dxt::stb_dxt`
+- **Headers**: `stb_dxt.h`
+- **Usage**:
+```cmake
+target_link_libraries(your_target PRIVATE stb_dxt)
+# or
+target_link_libraries(your_target PRIVATE stb_dxt::stb_dxt)
+```
+
+## How to Use in Your Project
+
+### From within the OrcaSlicer src/ directory:
+
+1. **In your CMakeLists.txt**, simply link the library:
+```cmake
+add_executable(my_app main.cpp)
+target_link_libraries(my_app 
+    PRIVATE 
+        semver::semver      # For version parsing
+        spline::spline      # For spline interpolation
+        stb_dxt::stb_dxt    # For DXT texture compression
+        hints               # For hints functionality
+)
+```
+
+2. **In your C++ code**, include the headers:
+```cpp
+// For semver
+#include <semver.h>
+
+// For spline
+#include <spline.h>
+
+// For stb_dxt
+#include <stb_dxt.h>
+
+// Use the libraries as documented in their respective headers
+```
+
+## Benefits of This Approach
+
+1. **Modern CMake**: Uses target-based CMake with proper INTERFACE/PUBLIC/PRIVATE visibility
+2. **Proper Include Paths**: Automatically sets up include directories
+3. **Namespace Aliases**: Provides namespaced aliases (e.g., `spline::spline`) for clarity
+4. **Position Independent Code**: Static libraries are built with `-fPIC` for compatibility
+5. **Install Support**: Libraries can be installed and used by external projects
+6. **Build/Install Interface**: Separates build-time and install-time include paths
+
+## Example Integration
+
+Here's a complete example of using these libraries in a new component:
+
+```cmake
+# In src/mycomponent/CMakeLists.txt
+add_library(mycomponent STATIC
+    mycomponent.cpp
+    mycomponent.h
+)
+
+target_link_libraries(mycomponent
+    PUBLIC
+        semver::semver  # Version handling is part of public API
+    PRIVATE
+        spline::spline  # Used internally for interpolation
+        stb_dxt::stb_dxt # Used internally for texture compression
+)
+
+target_include_directories(mycomponent
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+        $<INSTALL_INTERFACE:include>
+)
+```
+
+## Notes
+
+- All header-only libraries use the INTERFACE library type, which means they don't produce any binaries
+- The `semver` library produces a static library that will be linked into your target
+- The `hints` project also produces a `hintsToPot` executable utility
+- All libraries require at least C++11 (some require C++17)

deps_src/Shiny/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.13)
 project(Shiny)
 
 add_library(Shiny STATIC
@@ -23,3 +23,7 @@ add_library(Shiny STATIC
     ShinyZone.c
     ShinyZone.h
 )
+
+target_include_directories(Shiny PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)

deps_src/admesh/CMakeLists.txt

@@ -0,0 +1,22 @@
+cmake_minimum_required(VERSION 3.13)
+project(admesh)
+
+add_library(admesh STATIC
+    connect.cpp
+    normals.cpp
+    shared.cpp
+    stl.h
+    stl_io.cpp
+    stlinit.cpp
+    util.cpp
+)
+
+target_include_directories(admesh PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+    ${CMAKE_CURRENT_SOURCE_DIR}/..
+)
+
+target_link_libraries(admesh 
+    PRIVATE boost_headeronly
+    PUBLIC eigen
+)

deps_src/agg/CMakeLists.txt

@@ -0,0 +1,35 @@
+cmake_minimum_required(VERSION 3.13)
+project(agg)
+
+add_library(agg INTERFACE)
+
+target_include_directories(agg INTERFACE
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+target_sources(agg INTERFACE
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_array.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_basics.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_bezier_arc.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_clip_liang_barsky.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_color_gray.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_color_rgba.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_config.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_conv_transform.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_gamma_functions.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_gamma_lut.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_math.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_path_storage.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_pixfmt_base.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_pixfmt_gray.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_pixfmt_rgb.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_rasterizer_cells_aa.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_rasterizer_scanline_aa.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_rasterizer_scanline_aa_nogamma.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_rasterizer_sl_clip.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_renderer_base.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_renderer_scanline.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_rendering_buffer.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_scanline_p.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/agg_trans_affine.h
+)

deps_src/ankerl/CMakeLists.txt

@@ -0,0 +1,12 @@
+cmake_minimum_required(VERSION 3.13)
+project(ankerl)
+
+add_library(ankerl INTERFACE)
+
+target_include_directories(ankerl INTERFACE
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+target_sources(ankerl INTERFACE
+    ${CMAKE_CURRENT_SOURCE_DIR}/unordered_dense.h
+)

deps_src/clipper/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.13)
 project(clipper)
 
 add_library(clipper STATIC
@@ -9,4 +9,11 @@ add_library(clipper STATIC
     clipper_z.hpp
 )
 
-target_link_libraries(clipper TBB::tbb TBB::tbbmalloc)
+target_include_directories(clipper PUBLIC
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+target_link_libraries(clipper 
+    PUBLIC eigen
+    PRIVATE TBB::tbb TBB::tbbmalloc
+)

deps_src/eigen/CMakeLists.txt

@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.13)
+project(eigen)
+
+add_library(eigen INTERFACE)
+
+target_include_directories(eigen INTERFACE
+    ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+# Eigen is header-only, so we only need to specify the include directory
+# The headers are in the Eigen/ subdirectory structure