[libc++] Re-apply "Always build c++experimental.a""

This re-applies bb939931a1, which had been reverted by 09cebfb978
because it broke Chromium. The issues seen by Chromium should be
addressed by 1d0f79558c.

Differential Revision: https://reviews.llvm.org/D128927
This commit is contained in:
Louis Dionne 2022-07-19 10:44:06 -04:00
parent 1d0f79558c
commit 7300a651f5
33 changed files with 144 additions and 87 deletions

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@ -80,7 +80,6 @@ if(WIN32)
set(RUNTIMES_${target}_CMAKE_SYSTEM_NAME Windows CACHE STRING "")
set(RUNTIMES_${target}_CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "")
set(RUNTIMES_${target}_LIBCXX_ABI_VERSION 2 CACHE STRING "")
set(RUNTIMES_${target}_LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY OFF CACHE BOOL "")
set(RUNTIMES_${target}_LIBCXX_ENABLE_FILESYSTEM OFF CACHE BOOL "")
set(RUNTIMES_${target}_LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "")
set(RUNTIMES_${target}_LIBCXX_ENABLE_SHARED OFF CACHE BOOL "")

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@ -51,7 +51,6 @@ endif()
if(WIN32)
set(LIBCXX_ABI_VERSION 2 CACHE STRING "")
set(LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY OFF CACHE BOOL "")
set(LIBCXX_ENABLE_FILESYSTEM OFF CACHE BOOL "")
set(LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "")
set(LIBCXX_ENABLE_SHARED OFF CACHE BOOL "")

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@ -685,7 +685,6 @@ macro(add_custom_libcxx name prefix)
-DLIBCXXABI_HERMETIC_STATIC_LIBRARY=ON
-DLIBCXXABI_INCLUDE_TESTS=OFF
-DLIBCXX_CXX_ABI=libcxxabi
-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF
-DLIBCXX_ENABLE_SHARED=OFF
-DLIBCXX_HERMETIC_STATIC_LIBRARY=ON
-DLIBCXX_INCLUDE_BENCHMARKS=OFF

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@ -55,7 +55,6 @@ option(LIBCXX_ENABLE_ASSERTIONS
by users in their own code regardless of this option." OFF)
option(LIBCXX_ENABLE_SHARED "Build libc++ as a shared library." ON)
option(LIBCXX_ENABLE_STATIC "Build libc++ as a static library." ON)
option(LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY "Build libc++experimental.a" ON)
set(ENABLE_FILESYSTEM_DEFAULT ON)
if (WIN32 AND NOT MINGW)
# Filesystem is buildable for windows, but it requires __int128 helper
@ -167,9 +166,6 @@ cmake_dependent_option(LIBCXX_INSTALL_STATIC_LIBRARY
cmake_dependent_option(LIBCXX_INSTALL_SHARED_LIBRARY
"Install the shared libc++ library." ON
"LIBCXX_ENABLE_SHARED;LIBCXX_INSTALL_LIBRARY" OFF)
cmake_dependent_option(LIBCXX_INSTALL_EXPERIMENTAL_LIBRARY
"Install libc++experimental.a" ON
"LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY;LIBCXX_INSTALL_LIBRARY" OFF)
option(LIBCXX_ABI_UNSTABLE "Use the unstable ABI of libc++. This is equivalent to specifying LIBCXX_ABI_VERSION=n, where n is the not-yet-stable version." OFF)
if (LIBCXX_ABI_UNSTABLE)
@ -930,11 +926,7 @@ add_subdirectory(include)
add_subdirectory(src)
add_subdirectory(utils)
set(LIBCXX_TEST_DEPS "")
if (LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY)
list(APPEND LIBCXX_TEST_DEPS cxx_experimental)
endif()
set(LIBCXX_TEST_DEPS "cxx_experimental")
if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
list(APPEND LIBCXX_TEST_DEPS cxx_external_threads)

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@ -45,7 +45,7 @@ build_script:
#############################################################################
- cmake -G "%GENERATOR%" %CMAKE_OPTIONS%
"-DCMAKE_BUILD_TYPE=%configuration%"
"-DLLVM_PATH=C:\projects\deps\llvm" -DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF
"-DLLVM_PATH=C:\projects\deps\llvm"
-DLLVM_LIT_ARGS="-sv --show-xfail --show-unsupported"
%APPVEYOR_BUILD_FOLDER%

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@ -9,7 +9,6 @@ set(LIBCXX_USE_COMPILER_RT ON CACHE BOOL "")
set(LIBCXX_ENABLE_ASSERTIONS OFF CACHE BOOL "")
set(LIBCXX_ABI_VERSION "1" CACHE STRING "")
set(LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "")
set(LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY OFF CACHE BOOL "")
set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "")
set(LIBCXX_ENABLE_STATIC OFF CACHE BOOL "")
set(LIBCXXABI_ENABLE_SHARED ON CACHE BOOL "")

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@ -4,7 +4,6 @@ set(CMAKE_POSITION_INDEPENDENT_CODE OFF CACHE BOOL "")
set(LIBCXX_USE_COMPILER_RT ON CACHE BOOL "")
set(LIBCXX_ENABLE_ASSERTIONS OFF CACHE BOOL "")
set(LIBCXX_ABI_VERSION "1" CACHE STRING "")
set(LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY OFF CACHE BOOL "")
set(LIBCXX_ENABLE_STATIC ON CACHE BOOL "")
set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "")
set(LIBCXX_CXX_ABI libcxxabi CACHE STRING "")

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@ -1,2 +1,3 @@
set(LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY OFF CACHE BOOL "")
set(LIBCXX_TEST_PARAMS "enable_experimental=False" CACHE STRING "")
set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
set(LIBCXX_ENABLE_INCOMPLETE_FEATURES OFF CACHE BOOL "")

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@ -99,8 +99,7 @@ it is the simplest way to build.
-T "ClangCL" ^
-DLLVM_ENABLE_RUNTIMES=libcxx ^
-DLIBCXX_ENABLE_SHARED=YES ^
-DLIBCXX_ENABLE_STATIC=NO ^
-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=NO
-DLIBCXX_ENABLE_STATIC=NO
> cmake --build build
CMake + ninja (MSVC)
@ -131,8 +130,7 @@ In either case, then run:
> cmake -G Ninja -S runtimes -B build ^
-DCMAKE_C_COMPILER=clang-cl ^
-DCMAKE_CXX_COMPILER=clang-cl ^
-DLLVM_ENABLE_RUNTIMES=libcxx ^
-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=NO
-DLLVM_ENABLE_RUNTIMES=libcxx
> ninja -C build cxx
> ninja -C build check-cxx
@ -298,23 +296,6 @@ libc++ specific options
Path where target-specific libc++ headers should be installed. If a relative
path, relative to ``CMAKE_INSTALL_PREFIX``.
.. _libc++experimental options:
libc++experimental Specific Options
------------------------------------
.. option:: LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY:BOOL
**Default**: ``ON``
Build and test libc++experimental.a.
.. option:: LIBCXX_INSTALL_EXPERIMENTAL_LIBRARY:BOOL
**Default**: ``LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY AND LIBCXX_INSTALL_LIBRARY``
Install libc++experimental.a alongside libc++.
.. _ABI Library Specific Options:

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@ -34,22 +34,20 @@ matches that Standard in the library.
library until the standard has been ratified.
Using libc++experimental and ``<experimental/...>``
===================================================
Enabling experimental C++ Library features
==========================================
Libc++ provides implementations of experimental technical specifications
in a separate library, ``libc++experimental.a``. Users of ``<experimental/...>``
headers may be required to link ``-lc++experimental``. Note that not all
vendors ship ``libc++experimental.a``, and as a result, you may not be
able to use those experimental features.
.. code-block:: bash
$ clang++ test.cpp -lc++experimental
Libc++ provides implementations of some experimental features. Experimental features
are either Technical Specifications (TSes) or official features that were voted to
the Standard but whose implementation is not complete or stable yet in libc++. Those
are disabled by default because they are neither API nor ABI stable. However, the
``_LIBCPP_ENABLE_EXPERIMENTAL`` macro can be defined to turn those features on. Note
that you will also need to link to the appropriate ``libc++experimental.a`` static
archive.
.. warning::
Experimental libraries are Experimental.
* The contents of the ``<experimental/...>`` headers and ``libc++experimental.a``
* The contents of the ``<experimental/...>`` headers and the associated static
library will not remain compatible between versions.
* No guarantees of API or ABI stability are provided.
* When the standardized version of an experimental feature is implemented,

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@ -315,32 +315,31 @@ endif()
# Add a meta-target for both libraries.
add_custom_target(cxx DEPENDS ${LIBCXX_BUILD_TARGETS})
if (LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY)
set(LIBCXX_EXPERIMENTAL_SOURCES
experimental/memory_resource.cpp
)
add_library(cxx_experimental STATIC ${LIBCXX_EXPERIMENTAL_SOURCES})
target_link_libraries(cxx_experimental PUBLIC cxx-headers)
if (LIBCXX_ENABLE_SHARED)
target_link_libraries(cxx_experimental PRIVATE cxx_shared)
else()
target_link_libraries(cxx_experimental PRIVATE cxx_static)
endif()
set_target_properties(cxx_experimental
PROPERTIES
COMPILE_FLAGS "${LIBCXX_COMPILE_FLAGS}"
OUTPUT_NAME "c++experimental"
set(LIBCXX_EXPERIMENTAL_SOURCES
experimental/memory_resource.cpp
)
cxx_add_common_build_flags(cxx_experimental)
if (LIBCXX_HERMETIC_STATIC_LIBRARY)
# _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS can be defined in __config_site
# too. Define it in the same way here, to avoid redefinition conflicts.
target_compile_definitions(cxx_experimental PRIVATE _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS=)
endif()
add_library(cxx_experimental STATIC ${LIBCXX_EXPERIMENTAL_SOURCES})
target_link_libraries(cxx_experimental PUBLIC cxx-headers)
if (LIBCXX_ENABLE_SHARED)
target_link_libraries(cxx_experimental PRIVATE cxx_shared)
else()
target_link_libraries(cxx_experimental PRIVATE cxx_static)
endif()
if (LIBCXX_HERMETIC_STATIC_LIBRARY)
# _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS can be defined in __config_site
# too. Define it in the same way here, to avoid redefinition conflicts.
target_compile_definitions(cxx_experimental PRIVATE _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS=)
endif()
set_target_properties(cxx_experimental
PROPERTIES
COMPILE_FLAGS "${LIBCXX_COMPILE_FLAGS}"
OUTPUT_NAME "c++experimental"
)
cxx_add_common_build_flags(cxx_experimental)
if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
set(LIBCXX_EXTERNAL_THREADING_SUPPORT_SOURCES
@ -376,7 +375,7 @@ if (LIBCXX_INSTALL_STATIC_LIBRARY)
RUNTIME DESTINATION ${LIBCXX_INSTALL_RUNTIME_DIR} COMPONENT cxx)
endif()
if(LIBCXX_INSTALL_EXPERIMENTAL_LIBRARY)
if (LIBCXX_INSTALL_LIBRARY)
install(TARGETS cxx_experimental
LIBRARY DESTINATION ${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
ARCHIVE DESTINATION ${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
@ -393,10 +392,7 @@ endif()
if (NOT CMAKE_CONFIGURATION_TYPES)
if(LIBCXX_INSTALL_LIBRARY)
set(lib_install_target cxx)
endif()
if (LIBCXX_INSTALL_EXPERIMENTAL_LIBRARY)
set(experimental_lib_install_target cxx_experimental)
set(lib_install_target "cxx;cxx_experimental")
endif()
if(LIBCXX_INSTALL_HEADERS)
set(header_install_target install-cxx-headers)
@ -406,7 +402,7 @@ if (NOT CMAKE_CONFIGURATION_TYPES)
endif()
add_custom_target(install-cxx
DEPENDS ${lib_install_target}
${experimental_lib_install_target}
cxx_experimental
${header_install_target}
${pstl_install_target}
COMMAND "${CMAKE_COMMAND}"
@ -414,7 +410,7 @@ if (NOT CMAKE_CONFIGURATION_TYPES)
-P "${LIBCXX_BINARY_DIR}/cmake_install.cmake")
add_custom_target(install-cxx-stripped
DEPENDS ${lib_install_target}
${experimental_lib_install_target}
cxx_experimental
${header_install_target}
${pstl_install_target}
COMMAND "${CMAKE_COMMAND}"

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@ -93,10 +93,6 @@ if (NOT LIBCXX_ENABLE_EXCEPTIONS)
serialize_lit_param(enable_exceptions False)
endif()
if (NOT LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY)
serialize_lit_param(enable_experimental False)
endif()
if (NOT LIBCXX_ENABLE_RTTI)
serialize_lit_param(enable_rtti False)
endif()

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/memory_resource>
// memory_resource * new_delete_resource()

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/memory_resource>
// memory_resource * new_delete_resource()

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/memory_resource>
// template <class T> class polymorphic_allocator

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <memory_resource>
// template <class T> class polymorphic_allocator

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/memory_resource>
// template <class T> class polymorphic_allocator

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/memory_resource>
// template <class T> class polymorphic_allocator

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/memory_resource>
// template <class T> class polymorphic_allocator

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/deque>
// namespace std { namespace experimental { namespace pmr {

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/forward_list>
// namespace std { namespace experimental { namespace pmr {

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/list>
// namespace std { namespace experimental { namespace pmr {

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/map>
// namespace std { namespace experimental { namespace pmr {

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@ -9,6 +9,11 @@
// UNSUPPORTED: c++03
// UNSUPPORTED: no-localization
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/regex>
// namespace std { namespace experimental { namespace pmr {

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/set>
// namespace std { namespace experimental { namespace pmr {

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/string>
// namespace std { namespace experimental { namespace pmr {

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/unordered_map>
// namespace std { namespace experimental { namespace pmr {

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/unordered_set>
// namespace std { namespace experimental { namespace pmr {

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/vector>
// namespace std { namespace experimental { namespace pmr {

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/memory_resource>
// memory_resource * new_delete_resource()

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@ -8,6 +8,11 @@
// UNSUPPORTED: c++03
// Aligned allocation is required by std::experimental::pmr, but it was not provided
// before macosx10.13 and as a result we get linker errors when deploying to older than
// macosx10.13.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
// <experimental/memory_resource>
// memory_resource * null_memory_resource()

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@ -105,7 +105,6 @@ function generate-cmake-libcxx-win() {
# -D_LIBCPP_HAS_NO_INT128 (both when building the library itself and
# when building tests) to allow enabling filesystem for running tests,
# even if it uses a non-permanent ABI.
generate-cmake-base \
-DLLVM_ENABLE_RUNTIMES="libcxx" \
-DCMAKE_C_COMPILER=clang-cl \
@ -523,7 +522,7 @@ clang-cl-dll)
# correctly when libc++ visibility attributes indicate dllimport linkage
# anyway), thus just disable the experimental library. Remove this
# setting when cmake and the test driver does the right thing automatically.
generate-cmake-libcxx-win -DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF
generate-cmake-libcxx-win -DLIBCXX_TEST_PARAMS="enable_experimental=False"
echo "+++ Running the libc++ tests"
${NINJA} -vC "${BUILD_DIR}" check-cxx
;;

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@ -159,15 +159,19 @@ DEFAULT_PARAMETERS = [
])),
Parameter(name='enable_experimental', choices=[True, False], type=bool, default=True,
help="Whether to enable tests for experimental C++ libraries (typically Library Fundamentals TSes).",
help="Whether to enable tests for experimental C++ Library features.",
actions=lambda experimental: [] if not experimental else [
AddFeature('c++experimental'),
# When linking in MSVC mode via the Clang driver, a -l<foo>
# maps to <foo>.lib, so we need to use -llibc++experimental here
# to make it link against the static libc++experimental.lib.
# We can't check for the feature 'msvc' in available_features
# as those features are added after processing parameters.
PrependLinkFlag(lambda config: '-llibc++experimental' if _isMSVC(config) else '-lc++experimental')
#
# TODO: Switch to using the appropriate experimental compiler flag once
# all compilers we support implement that flag.
AddFeature('c++experimental'),
PrependLinkFlag(lambda cfg: '-llibc++experimental' if _isMSVC(cfg) else '-lc++experimental'),
AddCompileFlag('-D_LIBCPP_ENABLE_EXPERIMENTAL'),
]),
Parameter(name='long_tests', choices=[True, False], type=bool, default=True,