### Set target properties and installation rules

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Configures symbol visibility and defines installation paths for the library and header files.

```cmake
set_target_properties(DjInterop PROPERTIES C_VISIBILITY_PRESET hidden)
set_target_properties(DjInterop PROPERTIES CXX_VISIBILITY_PRESET hidden)

install(TARGETS DjInterop
        EXPORT DjInteropTargets
        ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
        LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
        RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")

install(FILES
    ${CMAKE_CURRENT_BINARY_DIR}/include/djinterop/config.hpp
    include/djinterop/album_art.hpp
    include/djinterop/crate.hpp
    include/djinterop/database.hpp
    include/djinterop/djinterop.hpp
    include/djinterop/exceptions.hpp
    include/djinterop/musical_key.hpp
    include/djinterop/pad_color.hpp
    include/djinterop/performance_data.hpp
    include/djinterop/playlist.hpp
    include/djinterop/semantic_version.hpp
    include/djinterop/stream_helper.hpp
    include/djinterop/track.hpp
    include/djinterop/track_snapshot.hpp
    DESTINATION "${DJINTEROP_INSTALL_INCLUDEDIR}")
install(FILES
    include/djinterop/engine/base_engine_library.hpp
    include/djinterop/engine/engine.hpp
    include/djinterop/engine/engine_schema.hpp
    DESTINATION "${DJINTEROP_INSTALL_INCLUDEDIR}/engine")
install(FILES
    include/djinterop/engine/v2/beat_data_blob.hpp
    include/djinterop/engine/v2/change_log_table.hpp
    include/djinterop/engine/v2/engine_library.hpp
    include/djinterop/engine/v2/information_table.hpp
    include/djinterop/engine/v2/loops_blob.hpp
    include/djinterop/engine/v2/overview_waveform_data_blob.hpp
    include/djinterop/engine/v2/playlist_entity_table.hpp
    include/djinterop/engine/v2/playlist_table.hpp
    include/djinterop/engine/v2/quick_cues_blob.hpp
    include/djinterop/engine/v2/track_data_blob.hpp
    include/djinterop/engine/v2/track_table.hpp
    DESTINATION "${DJINTEROP_INSTALL_INCLUDEDIR}/engine/v2")
install(FILES
    include/djinterop/engine/v3/beat_data_blob.hpp
    include/djinterop/engine/v3/engine_library.hpp
    include/djinterop/engine/v3/information_table.hpp
    include/djinterop/engine/v3/loops_blob.hpp
    include/djinterop/engine/v3/overview_waveform_data_blob.hpp
    include/djinterop/engine/v3/playlist_entity_table.hpp
    include/djinterop/engine/v3/playlist_table.hpp
    include/djinterop/engine/v3/quick_cues_blob.hpp
    include/djinterop/engine/v3/track_data_blob.hpp
    include/djinterop/engine/v3/track_table.hpp
    DESTINATION "${DJINTEROP_INSTALL_INCLUDEDIR}/engine/v3")
```

--------------------------------

### Define Example Program Builder

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Defines a function to simplify the creation of example executables and links them against the main library.

```cmake
option(BUILD_EXAMPLES "Build example programs" ON)

if (BUILD_EXAMPLES)
    # Example programs demonstrating usage.
    function(add_djinterop_example example_name)
        add_executable(example_${example_name} example/${example_name}.cpp)
        target_include_directories(example_${example_name} PUBLIC
                ${CMAKE_CURRENT_BINARY_DIR}/include
                include)
        target_link_libraries(example_${example_name} PUBLIC DjInterop)
    endfunction()

    add_djinterop_example(engine_prime)
    add_djinterop_example(engine_library_v2_low_level)
endif()
```

--------------------------------

### Generate and install pkg-config file

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Generates a .pc file for Unix systems to facilitate library discovery.

```cmake
if (UNIX)
    set(PKGCONFIG_TARGET djinterop)
    if (SYSTEM_SQLITE)
        set(PKGCONFIG_REQUIRES "zlib >= ${ZLIB_MIN_VERSION}, sqlite3 >= ${SQLITE_MIN_VERSION}")
    else()
        set(PKGCONFIG_REQUIRES "zlib >= ${ZLIB_MIN_VERSION}")
    endif()
    configure_file(djinterop.pc.in djinterop.pc @ONLY)
    install(FILES
            ${CMAKE_CURRENT_BINARY_DIR}/djinterop.pc
            DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
endif()
```

--------------------------------

### Configure CPack Installation

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Includes system library requirements and CPack configuration for packaging the project.

```cmake
include(InstallRequiredSystemLibraries)
set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")
include(CPack)
```

--------------------------------

### Compile engine_prime.cpp with g++

Source: https://github.com/xsco/libdjinterop/blob/main/example/README.md

Use this command to compile the engine_prime example application in isolation using pkg-config to manage library dependencies.

```shell
g++ -std=c++17 `pkg-config --cflags djinterop` engine_prime.cpp `pkg-config --libs djinterop`
```

--------------------------------

### Configure ZLIB dependency

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Ensures the system installation of zlib is used for the DjInterop target.

```cmake
set(ZLIB_MIN_VERSION 1.2.8)
find_package(ZLIB ${ZLIB_MIN_VERSION} REQUIRED)
target_include_directories(
    DjInterop PRIVATE SYSTEM
    ${ZLIB_INCLUDE_DIRS})
target_link_libraries(
    DjInterop PUBLIC
    ${ZLIB_LIBRARIES})
```

--------------------------------

### Configure header files and include directories

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Generates the config.hpp file from a template and configures public include directories for build and install interfaces.

```cmake
# Generate config.hpp based on build-time environment.
configure_file(
    include/djinterop/config.hpp.in
    include/djinterop/config.hpp)

include(GNUInstallDirs)
set(DJINTEROP_INSTALL_INCLUDEDIR "${CMAKE_INSTALL_INCLUDEDIR}/djinterop")

target_include_directories(
        DjInterop PUBLIC
        $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>
        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
        $<INSTALL_INTERFACE:${DJINTEROP_INSTALL_INCLUDEDIR}>)
```

--------------------------------

### Export CMake Package Configuration

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Configures and installs CMake package files to allow other projects to find and use the library.

```cmake
include(CMakePackageConfigHelpers)
set(DJINTEROP_INSTALL_CMAKEDIR "lib/cmake/DjInterop")
install(EXPORT DjInteropTargets
        FILE DjInteropTargets.cmake
        NAMESPACE DjInterop::
        DESTINATION "${DJINTEROP_INSTALL_CMAKEDIR}")
configure_package_config_file(
        DjInteropConfig.cmake.in
        "${CMAKE_CURRENT_BINARY_DIR}/DjInteropConfig.cmake"
        INSTALL_DESTINATION "${DJINTEROP_INSTALL_CMAKEDIR}")
write_basic_package_version_file(
        "${CMAKE_CURRENT_BINARY_DIR}/DjInteropConfigVersion.cmake"
        VERSION "${CMAKE_PROJECT_VERSION}"
        COMPATIBILITY SameMajorVersion)
install(FILES
        "${CMAKE_CURRENT_BINARY_DIR}/DjInteropConfig.cmake"
        "${CMAKE_CURRENT_BINARY_DIR}/DjInteropConfigVersion.cmake"
        DESTINATION "${DJINTEROP_INSTALL_CMAKEDIR}")
```

--------------------------------

### Enter Nix development environment

Source: https://github.com/xsco/libdjinterop/blob/main/README.md

Command to initialize a shell with all necessary build dependencies provided by Nix.

```shell
$ nix-shell
```

--------------------------------

### Build libdjinterop with CMake

Source: https://github.com/xsco/libdjinterop/blob/main/README.md

Standard sequence of commands to configure, build, and test the library using CMake.

```shell
$ mkdir cmake-build
$ cd cmake-build
$ cmake ..
$ cmake --build .
$ ctest   # To run unit tests
```

--------------------------------

### Project Initialization and Policy Settings

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Sets the minimum CMake version, project metadata, and enables specific CMake policies for compatibility.

```cmake
cmake_minimum_required(VERSION 3.10)
project(libdjinterop
        VERSION 0.27.3
        DESCRIPTION "C++ library providing access to DJ record libraries")
set(PROJECT_HOMEPAGE_URL "https://github.com/xsco/libdjinterop")

if(POLICY CMP0074)
    # CMP0074: find_package() uses <PackageName>_ROOT variables.
    cmake_policy(SET CMP0074 NEW)
endif()
if(POLICY CMP0076)
    # CMP0076: target_sources() command converts relative paths to absolute.
    cmake_policy(SET CMP0076 NEW)
endif()
if(POLICY CMP0167)
    # CMP0167: Don't use FindBoost() any longer.
    cmake_policy(SET CMP0167 NEW)
endif()
```

--------------------------------

### Configure Dependency Options

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Defines build options to toggle between bundled dependencies and system-installed versions.

```cmake
option(SYSTEM_DATE_H "Use system installation of date.h" OFF)
option(SYSTEM_SQLITE "Use system installation of SQLite" ON)
option(SYSTEM_SQLITE_MODERN_CPP "Use system installation of sqlite_modern_cpp" OFF)
```

--------------------------------

### Configure Unit Tests with Boost

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Sets up CTest and defines a helper function to compile and register unit tests that depend on the Boost library.

```cmake
include(CTest)
find_package(Boost 1.71.0 QUIET COMPONENTS filesystem system)
if (Boost_FOUND)
    set(TESTDATA_DIR "${CMAKE_CURRENT_SOURCE_DIR}/testdata")

    function(add_djinterop_test test_dir test_name)
        string(REPLACE "/" "_" test_executable_name ${test_dir}${test_name})
        add_executable(${test_executable_name}
                test/djinterop/${test_dir}${test_name}.cpp)

        target_compile_definitions(${test_executable_name} PUBLIC
                -DTESTDATA_DIR=${TESTDATA_DIR})
        if (MSVC)
            # Some unit tests are rather large and exceed max sections on VC++.
            target_compile_options(${test_executable_name} PRIVATE /bigobj)
        endif()

        target_include_directories(${test_executable_name} PUBLIC
                ${Boost_INCLUDE_DIRS}
                ${CMAKE_CURRENT_BINARY_DIR}/include
                include)
        target_link_libraries(${test_executable_name} PUBLIC
                DjInterop
                ${Boost_LIBRARIES})
        add_test(NAME ${test_executable_name} COMMAND ${test_executable_name})
    endfunction()

    add_djinterop_test("" semantic_version_test)
    add_djinterop_test(engine/ crate_test)
    add_djinterop_test(engine/ database_reference_test)
    add_djinterop_test(engine/ database_test)
    add_djinterop_test(engine/ engine_test)
    add_djinterop_test(engine/ playlist_test)
    add_djinterop_test(engine/ track_test)
    add_djinterop_test(engine/v2/ playlist_entity_table_test)
    add_djinterop_test(engine/v2/ playlist_table_test)
    add_djinterop_test(engine/v2/ track_table_test)
    add_djinterop_test(engine/v3/ performance_data_table_test)
    add_djinterop_test(engine/v3/ track_table_test)

else()
    message(STATUS "Unit tests not available, as Boost cannot be found")
endif()
```

--------------------------------

### Configure date.h dependency

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Toggles between using a system-installed date library or a bundled header-only version.

```cmake
if(SYSTEM_DATE_H)
    # Search for system installation of date.h and use that.
    find_package(date CONFIG REQUIRED)
    target_link_libraries(
        DjInterop PUBLIC
        date::date)
else()
    # Use bundled date.h (a header-only library).
    message(STATUS "Using bundled date.h...")
    target_include_directories(
        DjInterop PRIVATE SYSTEM
        ext/date)
endif()
```

--------------------------------

### Build Options Configuration

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Defines build options such as enabling shared library generation by default.

```cmake
# Build shared a library by default.
option(BUILD_SHARED_LIBS "Build shared library" ON)
```

--------------------------------

### Configure Doxygen in CMake

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Defines an option to toggle documentation builds and integrates Doxygen if found on the system.

```cmake
option(BUILD_DOC "Build documentation" ON)

# Check if Doxygen is installed
find_package(Doxygen OPTIONAL_COMPONENTS dot dia)
if (DOXYGEN_FOUND)
    set(DOXYGEN_HTML_OUTPUT docs)
    set(DOXYGEN_USE_MDFILE_AS_MAINPAGE README.md)

    message("Doxygen build started")

    doxygen_add_docs(
            docs
            include
            README.md
            COMMENT "Generate docs"
    )
else (DOXYGEN_FOUND)
    message("Doxygen need to be installed to generate the doxygen documentation")
endif (DOXYGEN_FOUND)
```

--------------------------------

### Configure SQLite dependency

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Selects between a system-installed SQLite library or bundled amalgamation sources.

```cmake
if(SYSTEM_SQLITE)
    # Search for system installation of SQLite and use that.
    set(SQLITE_MIN_VERSION 3.11)
    find_package(SQLite3 ${SQLITE_MIN_VERSION} REQUIRED)
    target_include_directories(
        DjInterop PRIVATE SYSTEM
        ${SQLite3_INCLUDE_DIRS})
    target_link_libraries(
        DjInterop PUBLIC
        ${SQLite3_LIBRARIES})
else()
    # Use bundled SQLite amalgamation sources.
    message(STATUS "Using bundled SQLite...")
    target_sources(
        DjInterop PRIVATE
        ext/sqlite-amalgamation/sqlite3.c)
    target_compile_definitions(
        DjInterop PUBLIC
        SQLITE_OMIT_LOAD_EXTENSION)
    target_include_directories(
        DjInterop PRIVATE SYSTEM
        ext/sqlite-amalgamation)
endif()
```

--------------------------------

### Configure DjInterop Target Properties

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Sets the output name, version, and SOVERSION for the DjInterop library target.

```cmake
set_target_properties(DjInterop PROPERTIES
    OUTPUT_NAME "djinterop"
    VERSION ${PROJECT_VERSION}
    SOVERSION ${PROJECT_VERSION_MAJOR})
```

--------------------------------

### Configure sqlite-modern-cpp dependency

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Configures the project to use either a system-installed or bundled version of sqlite-modern-cpp.

```cmake
if(SYSTEM_SQLITE_MODERN_CPP)
    # Search for system installation of sqlite-modern-cpp and use that.
    find_path(SQLITE_MODERN_CPP_INCLUDE_DIRS "sqlite_modern_cpp.h")
    message(STATUS "Found sqlite-modern-cpp at ${SQLITE_MODERN_CPP_INCLUDE_DIRS}")
    target_include_directories(
        DjInterop PRIVATE SYSTEM
        ${SQLITE_MODERN_CPP_INCLUDE_DIRS})
else()
    # Use bundled sqlite-modern-cpp (a header-only library).
    message(STATUS "Using bundled sqlite-modern-cpp...")
    target_include_directories(
        DjInterop PRIVATE SYSTEM
        ext/sqlite_modern_cpp)
endif()
```

--------------------------------

### C++ Standard and Compiler Configuration

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Enforces C++20 and applies compiler-specific flags for MSVC and GCC/Clang.

```cmake
# Require C++20
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED True)
set(CMAKE_CXX_EXTENSIONS OFF)
if(MSVC)
    add_compile_options("/W4" "/wd4251" "/wd4275" "$<$<CONFIG:RELEASE>:/O2>")

    # Ask MSVC to populate the __cplusplus macro properly.
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zc:__cplusplus")
else()
    # Disabling -Wunused-variable needed as the library implementation doesn't
    # use every variable in the public headers.  Is there a better way?
    # Disabling -Wunused-but-set-variable owing to XCode triggering on this
    # in the bundled SQLite amalgamation.
    add_compile_options("-Wall" "-Wpedantic" "-Wno-unused-variable" "-Wno-unused-but-set-variable" "-Werror")
endif()
```

--------------------------------

### Define DjInterop Library

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Adds the DjInterop library target and includes all necessary header and source files.

```cmake
add_library(
    DjInterop
    include/djinterop/album_art.hpp
    include/djinterop/crate.hpp
    include/djinterop/database.hpp
    include/djinterop/djinterop.hpp
    include/djinterop/engine/engine.hpp
    include/djinterop/engine/engine_schema.hpp
    include/djinterop/engine/v2/beat_data_blob.hpp
    include/djinterop/engine/v2/change_log_table.hpp
    include/djinterop/engine/v2/engine_library.hpp
    include/djinterop/engine/v2/information_table.hpp
    include/djinterop/engine/v2/loops_blob.hpp
    include/djinterop/engine/v2/overview_waveform_data_blob.hpp
    include/djinterop/engine/v2/playlist_entity_table.hpp
    include/djinterop/engine/v2/playlist_table.hpp
    include/djinterop/engine/v2/quick_cues_blob.hpp
    include/djinterop/engine/v2/track_data_blob.hpp
    include/djinterop/engine/v2/track_table.hpp
    include/djinterop/engine/v3/beat_data_blob.hpp
    include/djinterop/engine/v3/engine_library.hpp
    include/djinterop/engine/v3/information_table.hpp
    include/djinterop/engine/v3/loops_blob.hpp
    include/djinterop/engine/v3/overview_waveform_data_blob.hpp
    include/djinterop/engine/v3/performance_data_table.hpp
    include/djinterop/engine/v3/playlist_entity_table.hpp
    include/djinterop/engine/v3/playlist_table.hpp
    include/djinterop/engine/v3/quick_cues_blob.hpp
    include/djinterop/engine/v3/track_data_blob.hpp
    include/djinterop/engine/v3/track_table.hpp
    include/djinterop/exceptions.hpp
    include/djinterop/musical_key.hpp
    include/djinterop/pad_color.hpp
    include/djinterop/performance_data.hpp
    include/djinterop/playlist.hpp
    include/djinterop/semantic_version.hpp
    include/djinterop/stream_helper.hpp
    include/djinterop/track.hpp
    include/djinterop/track_snapshot.hpp
    src/djinterop/crate.cpp
    src/djinterop/database.cpp
    src/djinterop/engine/base_engine_library.cpp
    src/djinterop/engine/base_engine_impl.hpp
    src/djinterop/engine/encode_decode_utils.cpp
    src/djinterop/engine/encode_decode_utils.hpp
    src/djinterop/engine/engine.cpp
    src/djinterop/engine/engine_library_context.hpp
    src/djinterop/engine/engine_library_dir_utils.cpp
    src/djinterop/engine/engine_library_dir_utils.hpp
    src/djinterop/engine/metadata_types.hpp
    src/djinterop/engine/schema/schema_1_6_0.cpp
    src/djinterop/engine/schema/schema_1_6_0.hpp
    src/djinterop/engine/schema/schema_1_7_1.cpp
    src/djinterop/engine/schema/schema_1_7_1.hpp
    src/djinterop/engine/schema/schema_1_9_1.cpp
    src/djinterop/engine/schema/schema_1_9_1.hpp
    src/djinterop/engine/schema/schema_1_11_1.cpp
    src/djinterop/engine/schema/schema_1_11_1.hpp
    src/djinterop/engine/schema/schema_1_13_0.cpp
    src/djinterop/engine/schema/schema_1_13_0.hpp
    src/djinterop/engine/schema/schema_1_13_1.cpp
    src/djinterop/engine/schema/schema_1_13_1.hpp
    src/djinterop/engine/schema/schema_1_13_2.cpp
    src/djinterop/engine/schema/schema_1_13_2.hpp
    src/djinterop/engine/schema/schema_1_15_0.cpp
    src/djinterop/engine/schema/schema_1_15_0.hpp
    src/djinterop/engine/schema/schema_1_17_0.cpp
    src/djinterop/engine/schema/schema_1_17_0.hpp
    src/djinterop/engine/schema/schema_1_18_0_desktop.cpp
    src/djinterop/engine/schema/schema_1_18_0_desktop.hpp
    src/djinterop/engine/schema/schema_1_18_0_os.cpp
    src/djinterop/engine/schema/schema_1_18_0_os.hpp
    src/djinterop/engine/schema/schema_2_18_0.cpp
    src/djinterop/engine/schema/schema_2_18_0.hpp
    src/djinterop/engine/schema/schema_2_20_1.cpp
    src/djinterop/engine/schema/schema_2_20_1.hpp
    src/djinterop/engine/schema/schema_2_20_2.cpp
    src/djinterop/engine/schema/schema_2_20_2.hpp
    src/djinterop/engine/schema/schema_2_20_3.cpp
    src/djinterop/engine/schema/schema_2_20_3.hpp
    src/djinterop/engine/schema/schema_2_21_0.cpp
    src/djinterop/engine/schema/schema_2_21_0.hpp
    src/djinterop/engine/schema/schema_2_21_1.cpp
    src/djinterop/engine/schema/schema_2_21_1.hpp
    src/djinterop/engine/schema/schema_2_21_2.cpp
    src/djinterop/engine/schema/schema_2_21_2.hpp
    src/djinterop/engine/schema/schema_3_0_0.cpp
    src/djinterop/engine/schema/schema_3_0_0.hpp
    src/djinterop/engine/schema/schema_3_0_1.cpp
    src/djinterop/engine/schema/schema_3_0_1.hpp
    src/djinterop/engine/schema/schema_3_0_2.cpp
    src/djinterop/engine/schema/schema_3_0_2.hpp
    src/djinterop/engine/schema/schema.cpp
    src/djinterop/engine/schema/schema.hpp
)
```

--------------------------------

### Define DjInterop Compile Definitions

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Adds the DJINTEROP_SOURCE definition to the DjInterop target.

```cmake
target_compile_definitions(DjInterop PUBLIC DJINTEROP_SOURCE)
```

--------------------------------

### Detect DjInterop Library Type

Source: https://github.com/xsco/libdjinterop/blob/main/CMakeLists.txt

Checks if the DjInterop library is built as a static library and sets a flag accordingly.

```cmake
get_target_property(DJINTEROP_LIBRARY_TYPE DjInterop TYPE)
if(DJINTEROP_LIBRARY_TYPE STREQUAL "STATIC_LIBRARY")
	set(DJINTEROP_STATIC ON)
endif()
```

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