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:

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:

target_link_libraries(your_target PRIVATE hints)

3. stb_dxt (Interface Library)

• Type: Interface library (header-only)
• Target: stb_dxt or stb_dxt::stb_dxt
• Headers: stb_dxt.h
• Usage:

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:

add_executable(my_app main.cpp)
target_link_libraries(my_app
    PRIVATE
        semver::semver      # For version parsing
        stb_dxt::stb_dxt    # For DXT texture compression
        hints               # For hints functionality
)

2. In your C++ code, include the headers:

// For semver
#include <semver.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:

# 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
        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)