# C++ configuration options # Copyright (c) 2018 B. Leforestier # SPDX-License-Identifier: Apache-2.0 menu "C++ Language Support" config CPP bool "C++ support for the application" help This option enables the use of applications built with C++. if CPP config STD_CPP_VERSION int default 199711 if STD_CPP98 default 201103 if STD_CPP11 default 201402 if STD_CPP14 default 201703 if STD_CPP17 default 202002 if STD_CPP20 || STD_CPP2A || STD_CPP2B help The version number of C++ standard being used (NOTE: this uses the full year and month, and is the same as the __cplusplus macro defined by the compiler). This config can be used to check for a minimum supported version. Example: depends on STD_CPP_VERSION >= 201703 Adding this to your library's enablement Kconfig will force a minimum c++17 standard. The full year is used so c++98 can be checked using > and < operators without conflicting with c++11 or higher. choice STD_CPP prompt "C++ Standard" default STD_CPP11 help C++ Standards. config STD_CPP98 bool "C++ 98" help 1998 C++ standard as modified by the 2003 technical corrigendum and some later defect reports. config STD_CPP11 bool "C++ 11" help 2011 C++ standard, previously known as C++0x. config STD_CPP14 bool "C++ 14" help 2014 C++ standard. config STD_CPP17 bool "C++ 17" help 2017 C++ standard, previously known as C++0x. config STD_CPP2A bool "C++ 2a" help Next revision of the C++ standard, which is expected to be published in 2020. config STD_CPP20 bool "C++ 20" help 2020 C++ standard, previously known as C++2A. config STD_CPP2B bool "C++ 2b" help Next revision of the C++ standard, which is expected to be published in 2023. endchoice config REQUIRES_FULL_LIBCPP bool "Require complete C++ standard library" select REQUIRES_FULL_LIBC help Indicates that a full C++ standard library is required, either by a subsystem or an application. This will also include a full C library implementation. config FULL_LIBCPP_SUPPORTED bool help Selected when the target has at least one C++ library that offers a complete implementation and which would be selected when REQUIRES_FULL_LIBCPP is set. choice LIBCPP_IMPLEMENTATION prompt "C++ Standard Library Implementation" default EXTERNAL_LIBCPP if REQUIRES_FULL_LIBCPP && NATIVE_BUILD default LIBCXX_LIBCPP if REQUIRES_FULL_LIBCPP && "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "llvm" default GLIBCXX_LIBCPP if REQUIRES_FULL_LIBCPP default MINIMAL_LIBCPP config MINIMAL_LIBCPP bool "Minimal C++ Library" depends on !REQUIRES_FULL_LIBCPP help Build with the minimal C++ library provided by Zephyr. The Zephyr minimal C++ library only provides a very limited subset of the standard C++ library and is mainly intended for use with the applications that do not require the Standard Template Library (STL). config GLIBCXX_LIBCPP bool "GNU C++ Standard Library" depends on !NATIVE_APPLICATION depends on NEWLIB_LIBC || PICOLIBC select FULL_LIBCPP_SUPPORTED help Build with GNU C++ Standard Library (libstdc++) provided by the GNU Compiler Collection (GCC)-based toolchain. config LIBCXX_LIBCPP bool "LLVM C++ Standard Library" depends on !NATIVE_APPLICATION depends on NEWLIB_LIBC depends on "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "llvm" select FULL_LIBCPP_SUPPORTED help Build with LLVM C++ Standard Library (libc++) provided by LLVM toolchain. Information about library can be found at https://libcxx.llvm.org config ARCMWDT_LIBCPP bool "ARC MWDT C++ Library" depends on !NATIVE_APPLICATION depends on ARCMWDT_LIBC help Build with ARC MetaWare C++ Standard Library provided by the ARC MetaWare Development Tools (MWDT) toolchain. config EXTERNAL_LIBCPP bool "External C++ standard library" help Build and link with an external/user-provided C++ standard library. config EXTERNAL_MODULE_LIBCPP bool "External C++ standard library module" help Build an external/user-provided C++ standard library. endchoice # LIBCPP_IMPLEMENTATION if !MINIMAL_LIBCPP config CPP_EXCEPTIONS bool "C++ exceptions support" depends on !NEWLIB_LIBC_NANO help This option enables support of C++ exceptions. config CPP_RTTI bool "C++ RTTI support" help This option enables support of C++ RTTI. endif # !MINIMAL_LIBCPP endif # CPP endmenu