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[libc++][NFC] Reorder availability macros in introduction order #82531

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Feb 26, 2024
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[libc++][NFC] Reorder availability macros in introduction order #82531

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54 changes: 27 additions & 27 deletions libcxx/include/__availability
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Original file line number Diff line number Diff line change
Expand Up @@ -101,31 +101,38 @@
# define _LIBCPP_AVAILABILITY_HAS_BAD_ANY_CAST 1
# define _LIBCPP_AVAILABILITY_BAD_ANY_CAST

// These macros controls the availability of __cxa_init_primary_exception
// in the built library, which std::make_exception_ptr might use
// (see libcxx/include/__exception/exception_ptr.h).
# define _LIBCPP_AVAILABILITY_HAS_INIT_PRIMARY_EXCEPTION 1
# define _LIBCPP_AVAILABILITY_INIT_PRIMARY_EXCEPTION

// These macros control the availability of all parts of <filesystem> that
// depend on something in the dylib.
# define _LIBCPP_AVAILABILITY_HAS_FILESYSTEM_LIBRARY 1
# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY
# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_PUSH
# define _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP

// This controls the availability of floating-point std::to_chars functions.
// These overloads were added later than the integer overloads.
# define _LIBCPP_AVAILABILITY_HAS_TO_CHARS_FLOATING_POINT 1
# define _LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT

// This controls the availability of the C++20 synchronization library,
// which requires shared library support for various operations
// (see libcxx/src/atomic.cpp). This includes <barier>, <latch>,
// <semaphore>, and notification functions on std::atomic.
# define _LIBCPP_AVAILABILITY_HAS_SYNC 1
# define _LIBCPP_AVAILABILITY_SYNC

// Enable additional explicit instantiations of iostreams components. This
// reduces the number of weak definitions generated in programs that use
// iostreams by providing a single strong definition in the shared library.
//
// TODO: Enable additional explicit instantiations on GCC once it supports exclude_from_explicit_instantiation,
// or once libc++ doesn't use the attribute anymore.
// TODO: Enable them on Windows once https://llvm.org/PR41018 has been fixed.
# if !defined(_LIBCPP_COMPILER_GCC) && !defined(_WIN32)
# define _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 1
# else
# define _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 0
# endif

// This controls the availability of floating-point std::to_chars functions.
// These overloads were added later than the integer overloads.
# define _LIBCPP_AVAILABILITY_HAS_TO_CHARS_FLOATING_POINT 1
# define _LIBCPP_AVAILABILITY_TO_CHARS_FLOATING_POINT

// This controls whether the library claims to provide a default verbose
// termination function, and consequently whether the headers will try
// to use it when the mechanism isn't overriden at compile-time.
Expand All @@ -137,29 +144,22 @@
# define _LIBCPP_AVAILABILITY_HAS_PMR 1
# define _LIBCPP_AVAILABILITY_PMR

// This controls the availability of the C++20 time zone database.
// The parser code is built in the library.
# define _LIBCPP_AVAILABILITY_HAS_TZDB 1
# define _LIBCPP_AVAILABILITY_TZDB
// These macros controls the availability of __cxa_init_primary_exception
// in the built library, which std::make_exception_ptr might use
// (see libcxx/include/__exception/exception_ptr.h).
# define _LIBCPP_AVAILABILITY_HAS_INIT_PRIMARY_EXCEPTION 1
# define _LIBCPP_AVAILABILITY_INIT_PRIMARY_EXCEPTION

// This controls the availability of C++23 <print>, which
// has a dependency on the built library (it needs access to
// the underlying buffer types of std::cout, std::cerr, and std::clog.
# define _LIBCPP_AVAILABILITY_HAS_PRINT 1
# define _LIBCPP_AVAILABILITY_PRINT

// Enable additional explicit instantiations of iostreams components. This
// reduces the number of weak definitions generated in programs that use
// iostreams by providing a single strong definition in the shared library.
//
// TODO: Enable additional explicit instantiations on GCC once it supports exclude_from_explicit_instantiation,
// or once libc++ doesn't use the attribute anymore.
// TODO: Enable them on Windows once https://llvm.org/PR41018 has been fixed.
# if !defined(_LIBCPP_COMPILER_GCC) && !defined(_WIN32)
# define _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 1
# else
# define _LIBCPP_AVAILABILITY_HAS_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1 0
# endif
// This controls the availability of the C++20 time zone database.
// The parser code is built in the library.
# define _LIBCPP_AVAILABILITY_HAS_TZDB 1
# define _LIBCPP_AVAILABILITY_TZDB

#elif defined(__APPLE__)

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