option(FFS_LIBRARIES_ONLY "Whether or not to build the associated executables"
  OFF)

option(gtest_build_tests "Build all of gtest's own tests." OFF)

option(WANT_MONOLITH "Include all addons in the main library" off)

option(WANT_DLL_TLS "Force use of DllMain for TLS (Windows)" off)

option(WANT_ACODEC_DYNAMIC_LOAD "Enable DLL loading in acodec (Windows)" off)

option(WITH_STRICT_DEPENDENCIES "Error and abort instead of warning if a library is not found." FALSE)

option(CGNS_ENABLE_FORTRAN "Enable or disable the use of Fortran" "OFF")

option(BUILD_TESTING_MULTICORE "Build unit tests for Multicore module" TRUE)

option(BUILD_TESTING_SYNCHRONO "Build unit tests for SynChrono module" TRUE)

option(CIVETWEB_ENABLE_DUKTAPE "Enable Duktape CGIs" OFF)

option(FONTCONFIG_RUNTIME_LINKING   "Enable FontConfig runtime linking when ON (default), disable when OFF." ON)

option(CORRADE_WITH_TESTSUITE "Build TestSuite library" ON)

option(CURL_DISABLE_BASIC_AUTH "Disable Basic authentication" OFF)

option(WITH_TBLITE "Whether xTB support should be included via tblite." FALSE)

option(PYBIND11_DISABLE_HANDLE_TYPE_NAME_DEFAULT_IMPLEMENTATION
       "To enforce that a handle_type_name<> specialization exists" OFF)

option(DISABLE_EXTENSION_LOAD "Disable support for loading and installing extensions" FALSE)

option(EFXC2_FORMAT_VENDORED "Use vendored fmt" ${MSVC})

option(EXIV2_BUILD_DOC "Add 'doc' target to generate documentation" OFF)

option(GLFW_INSTALL "Generate installation target" OFF)

option(FMT_FUZZ "Generate the fuzz target." OFF)

option(FREECAD_USE_EXTERNAL_KDL "Use system installed orocos-kdl instead of the bundled." OFF)

option(ENABLE_DEVELOPER_TESTS "Build the FreeCAD unit tests suit" ON)

option(WITH_NO_UNDEFINED "Add -Wl,--no-undefined" OFF)

option(OPTION_BUILD_TESTS             "Build tests."                                              OFF)

option (HDF4_ENABLE_FORMATTERS "format source files" OFF)

option (HDF4_DISABLE_COMPILER_WARNINGS "Disable compiler warnings" OFF)

option(WITH_CODE_COVERAGE "Enable code coverage reporting" OFF)

option (ENABLE_${plname} "Enable Library Building for ${plname} plugin" ON)

OPTION(ENABLE_SSL_TESTS "Should we test SSL connections" OFF)

option(ISPC_INCLUDE_TESTS "Generate build targets for the ISPC tests." ON)

option(EIGEN_TEST_AVX512DQ "Enable/Disable AVX512DQ in tests/examples" OFF)

option(ITK_USE_EIGEN_MPL2_ONLY "Set compile definition EIGEN_MPL2_ONLY for ITKInternalEigen3." OFF)

option(EXPAT_BUILD_FUZZERS "build fuzzers for the expat library" OFF)

option(GDCM_USE_SYSTEM_JSON "Use system json" OFF)

option(GDCM_WRAP_CSHARP "build gdcm/csharp wrapping" OFF)

option(INSTALL_GTEST "Enable installation of googletest. (Projects embedding googletest may want to turn this OFF.)" ON)

option(NIFTI_USE_PACKAGING "Configure the packaging options for NIFTI" OFF)

option(SSE "SSE 4.1 support" TRUE)

option(USE_PYTHON "Build support for the Python scripting bridge" OFF)

OPTION(INSTALL_PYTHON_MODULE "Install Python module for the helper scripts" ON)

option(ARIBCC_USE_FREETYPE "Enable FreeType text rendering backend" ON)

option(LIBICSNEO_BUILD_DOCS "Build documentation. Don't use in Visual Studio." OFF)

option(PEVENT "Enable perf_event sideband support." OFF)

option(MAGNUM_WITH_MAGNUMFONT "Build MagnumFont plugin" OFF)

option(MAGNUM_WITH_OBJIMPORTER "Build ObjImporter plugin" OFF)

- option(WITH_FRIBIDI "Choose if FriBidi glyph reordering should be enabled (useful for left-to-right languages)(requires harfbuzz)" ON)

option(MESHOPT_BUILD_SHARED_LIBS "Build shared libraries" OFF)

option(MESHOPT_STABLE_EXPORTS "Only export stable APIs from shared library" OFF)

option(MFEM_USE_LEGACY_OPENMP "Enable legacy OpenMP usage" OFF)

option(MFEM_USE_MKL_CPARDISO "Enable MKL CPardiso" OFF)

option(MOD_RTAUDIO "Enable RtAudio module" ON)

option(ZSTD_BUILD_TESTS "BUILD TESTS" ${ZSTD_BUILD_TESTS_default})

option (NNG_PROTO_RESPONDENT0 "Enable RESPONDENTv0 protocol." ON)

option(OGRE_STATIC "Static build" FALSE)

option(OIDN_INSTALL_DEPENDENCIES "Install Open Image Denoise dependencies." OFF)

option(ALL_BINDINGS "Build all languages bindings" OFF)

option(CUDA_64_BIT_DEVICE_CODE "Compile device code in 64 bit mode" ${CUDA_64_BIT_DEVICE_CODE_DEFAULT})

option(USE_BUILTIN_CLIPPER2 "Use Clipper2 from submodule" ON)

OPTION(OSG_USE_FLOAT_QUAT "Set to ON to build OpenSceneGraph with float Quat instead of double." OFF)

OPTION(OSG_GL_LIBRARY_STATIC "Set to ON to statically link with OpenGL/GLES library." OFF)

# `option()` workalike using super_set underneath.

option(OTIO_DEPENDENCIES_INSTALL      "Install OTIO's C++ header dependencies (Imath)" ON)

option(GLM_TEST_ENABLE_CXX_0X "Enable C++ 0x" OFF)

option(GLM_TEST_ENABLE_CXX_14 "Enable C++ 14" OFF)

OPTION(OSG_BUILD_PLATFORM_IPHONE "Enable IPhoneSDK Device support" OFF)

OPTION(DYNAMIC_OPENSCENEGRAPH "Set to ON to build OpenSceneGraph for dynamic linking.  Use OFF for static." ON)

option(PARSEC_DEBUG_HISTORY
  "Keep a summarized history of critical events in memory that can be dumped in gdb when deadlock occur." OFF)

option(BUILD_PLUGIN_CPD
    "Choose if the cpd filter should be built" FALSE)

option(o2_WITH_FLICKR "Authenticate with Flickr" OFF)

option(WITH_ZLIB "build with zlib" OFF)

option(WITH_PERF_CONTEXT "Enable perf context" ON)

option(WITH_JNI "build with JNI" OFF)

option(SCN_DISABLE_FAST_FLOAT "Disable the external dependency on fast_float, requires std::from_chars for floats" OFF)

option(SCN_DISABLE_TYPE_LONG_LONG "Disable scanning of long long" OFF)

option(SCN_DISABLE_TYPE_STRING "Disable scanning of std::basic_string" OFF)

option(SCORE_PLAYER "Build standalone player" OFF)

option(SCORE_FAST_DEV_BUILD "Disables some features for faster development" OFF)

  option(SHADERC_ENABLE_SHARED_CRT
          "Use the shared CRT instead of the static CRT"
		  OFF)

option(SIMDJSON_BUILD_STATIC_LIB "Build simdjson_static library along with simdjson (only makes sense if BUILD_SHARED_LIBS=ON)" OFF)

option(USE_DOUBLES "Use double-precision floating-point numbers." OFF)

option(ENABLE_ENCRYPTION "Enable encryption in SRT" ON)

#    using a CMake option() to enable it just optionally):

option(CODE_COVERAGE_VERBOSE "Verbose information" FALSE)

option(TPL_ENABLE_METISLIB   "Build the METIS library" OFF)

option(SWIFT_STDLIB_ASSERTIONS
    "Enable internal checks for the Swift standard library (useful for debugging the library itself, does not affect checks required for safety)"
    "${SWIFT_STDLIB_ASSERTIONS_default}")

option(SWIFT_STDLIB_SINGLE_THREADED_CONCURRENCY
       "Build the standard libraries assuming that they will be used in an environment with only a single thread."
       FALSE)

#option(TGUI_BUILD_AS_CXX_MODULE "ON to build TGUI as a c++20 module instead of using header files" OFF)

option(TGUI_BUILD_FRAMEWORK "TRUE to build TGUI as a framework library (release only), FALSE to build according to TGUI_SHARED_LIBS" ${TGUI_SHARED_LIBS})

option(ENABLE_TSAN "Enable thread sanitizer support" OFF)

option(BUILD_SHARED_LIBS "Build shared libraries" OFF)

OPTION(NOX_ENABLE_ABSTRACT_IMPLEMENTATION_LAPACK
  "Enables support for LAPACK implementation of Abstract Group and Vector classes.  Defaults to ON if LAPACK is enabled, otherwise defaults to OFF."
  ${NOX_ENABLE_LAPACK}
  )

# option(LWS_WITH_LEJP "With the Lightweight JSON Parser" ON)

# option(LWS_WITH_ASAN "Build with gcc runtime sanitizer options enabled (needs libasan)" OFF)

option(INSTALL_HEADERS "Install header files" ON)

option(BUILD_GMOCK "Builds the googlemock subproject" ON)

option(gtest_build_tests "Build all of gtest's own tests." OFF)

OPTION(SHARED_LIBS "Compile shared libraries" OFF)

option(ZSTD_FRAMEWORK "Build as Apple Framework" OFF)

option(MSVC_STATIC_RUNTIME "Build with static runtime libs (/MT)" ON)

option(ZZIP_LIBTOOL "Ensure binary compatibility with libtool" OFF)