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ladybird/AK/Platform.h
Undefine 542f3e5cca AK+Meta: Make AK / ObjC interop MacOS only 
This is entirely unused but still could be useful in the AppKit port.
Originally this was meant for Swift interop which is why it had support
for other platforms, but now it's causing issues on systems like
FreeBSD, so lets just gate it behind the only platform it's useful for.
We also assume that Objective C blocks and Arc are supported for the
AppKit port to build so no need to check for that in CMake.
2026-05-05 22:08:24 +02:00

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/*
* Copyright (c) 2018-2022, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2022, Nico Weber <thakis@chromium.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#if __has_include(<features.h>)
# include <features.h>
#endif
#ifndef USING_AK_GLOBALLY
# define USING_AK_GLOBALLY 1
#endif
#ifdef __x86_64__
# define AK_IS_ARCH_X86_64() 1
#else
# define AK_IS_ARCH_X86_64() 0
#endif
#if defined(__i386__) && !defined(__x86_64__)
# define AK_IS_ARCH_I386() 1
#else
# define AK_IS_ARCH_I386() 0
#endif
#ifdef __aarch64__
# define AK_IS_ARCH_AARCH64() 1
#else
# define AK_IS_ARCH_AARCH64() 0
#endif
#if defined(__riscv) && __riscv_xlen == 64
# define AK_IS_ARCH_RISCV64() 1
#else
# define AK_IS_ARCH_RISCV64() 0
#endif
#if defined(__ppc64__) || defined(__PPC64__)
# define AK_IS_ARCH_PPC64() 1
#else
# define AK_IS_ARCH_PPC64() 0
#endif
#if defined(__ppc64le__) || defined(__PPC64LE__)
# define AK_IS_ARCH_PPC64LE() 1
#else
# define AK_IS_ARCH_PPC64LE() 0
#endif
#if defined(__ppc__) || defined(__PPC__) || defined(__powerpc__) || defined(__powerpc) || defined(__POWERPC__)
# define AK_IS_ARCH_PPC() 1
#else
# define AK_IS_ARCH_PPC() 0
#endif
#if (defined(__SIZEOF_POINTER__) && __SIZEOF_POINTER__ == 8) || defined(_WIN64)
# define AK_ARCH_64_BIT
#else
# define AK_ARCH_32_BIT
#endif
#if defined(__clang__) || defined(__CLION_IDE__) || defined(__CLION_IDE_)
# define AK_COMPILER_CLANG
#elif defined(__GNUC__)
# define AK_COMPILER_GCC
#endif
#if defined(AK_COMPILER_CLANG) && defined(__apple_build_version__)
# define AK_COMPILER_APPLE_CLANG
#endif
#if defined(__GLIBC__)
# define AK_LIBC_GLIBC
# define AK_LIBC_GLIBC_PREREQ(maj, min) __GLIBC_PREREQ((maj), (min))
#else
# define AK_LIBC_GLIBC_PREREQ(maj, min) 0
#endif
#if defined(__serenity__)
# define AK_OS_SERENITY
#endif
#if defined(__linux__)
# define AK_OS_LINUX
#endif
#if defined(__APPLE__) && defined(__MACH__) && !defined(__IOS__)
# define AK_OS_MACOS
# define AK_OS_BSD_GENERIC
#endif
#if defined(__IOS__)
# define AK_OS_IOS
# define AK_OS_BSD_GENERIC
#endif
#if defined(__FreeBSD__)
# define AK_OS_BSD_GENERIC
# define AK_OS_FREEBSD
#endif
#if defined(__NetBSD__)
# define AK_OS_BSD_GENERIC
# define AK_OS_NETBSD
#endif
#if defined(__OpenBSD__)
# define AK_OS_BSD_GENERIC
# define AK_OS_OPENBSD
#endif
#if defined(__DragonFly__)
# define AK_OS_BSD_GENERIC
# define AK_OS_DRAGONFLY
#endif
#if defined(__sun)
# define AK_OS_BSD_GENERIC
# define AK_OS_SOLARIS
#endif
#if defined(__HAIKU__)
# define AK_OS_HAIKU
#endif
#if defined(__gnu_hurd__)
# define AK_OS_GNU_HURD
#endif
#if defined(__MACH__)
# define AK_OS_MACH
#endif
#if defined(_WIN32) || defined(_WIN64)
# define AK_OS_WINDOWS
#endif
#if defined(__ANDROID__)
# define STR(x) __STR(x)
# define __STR(x) #x
# if __ANDROID_API__ < 30
# pragma message "Invalid android API " STR(__ANDROID_API__)
# error "Build configuration not tested on configured Android API version"
# endif
# undef STR
# undef __STR
# define AK_OS_ANDROID
#endif
#define ARCH(arch) (AK_IS_ARCH_##arch())
#ifdef ALWAYS_INLINE
# undef ALWAYS_INLINE
#endif
#define ALWAYS_INLINE __attribute__((always_inline)) inline
#ifdef NEVER_INLINE
# undef NEVER_INLINE
#endif
#define NEVER_INLINE __attribute__((noinline))
#ifdef COLD
# undef COLD
#endif
#define COLD __attribute__((cold))
#ifdef HOT
# undef HOT
#endif
#define HOT __attribute__((hot))
#ifdef FLATTEN
# undef FLATTEN
#endif
#define FLATTEN __attribute__((flatten))
#ifdef RETURNS_NONNULL
# undef RETURNS_NONNULL
#endif
#define RETURNS_NONNULL __attribute__((returns_nonnull))
#ifdef NO_SANITIZE_COVERAGE
# undef NO_SANITIZE_COVERAGE
#endif
#if defined(AK_COMPILER_CLANG)
# define NO_SANITIZE_COVERAGE __attribute__((no_sanitize("coverage")))
#else
# define NO_SANITIZE_COVERAGE __attribute__((no_sanitize_coverage))
#endif
#ifdef NO_SANITIZE_ADDRESS
# undef NO_SANITIZE_ADDRESS
#endif
#if defined(AK_COMPILER_CLANG)
# define NO_SANITIZE_ADDRESS __attribute__((no_sanitize("address")))
#else
# define NO_SANITIZE_ADDRESS __attribute__((no_sanitize_address))
#endif
#ifdef DISALLOW
# undef DISALLOW
#endif
#if defined(AK_COMPILER_CLANG)
# define DISALLOW(message) __attribute__((diagnose_if(1, message, "error")))
#else
# define DISALLOW(message) __attribute__((error(message)))
#endif
#ifdef NO_UNIQUE_ADDRESS
# undef NO_UNIQUE_ADDRESS
#endif
#if defined(AK_OS_WINDOWS)
# define NO_UNIQUE_ADDRESS [[msvc::no_unique_address]]
#else
# define NO_UNIQUE_ADDRESS [[no_unique_address]]
#endif
#if defined(AK_OS_WINDOWS)
// https://learn.microsoft.com/en-us/cpp/cpp/empty-bases?view=msvc-170
# define AK_COMPACT_EMPTY_BASES __declspec(empty_bases)
#else
# define AK_COMPACT_EMPTY_BASES
#endif
#if defined(LIFETIME_BOUND)
# undef LIFETIME_BOUND
#endif
#if defined(AK_COMPILER_CLANG)
# define LIFETIME_BOUND [[clang::lifetimebound]]
#else
# define LIFETIME_BOUND
#endif
#if defined(MUST_UPCALL)
# undef MUST_UPCALL
#endif
#if defined(AK_COMPILER_CLANG)
# define MUST_UPCALL [[clang::annotate("must_upcall")]]
#else
# define MUST_UPCALL
#endif
// GCC doesn't have __has_feature but clang does
#ifndef __has_feature
# define __has_feature(...) 0
#endif
#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
# define HAS_ADDRESS_SANITIZER
# define ASAN_POISON_MEMORY_REGION(addr, size) __asan_poison_memory_region(addr, size)
# define ASAN_UNPOISON_MEMORY_REGION(addr, size) __asan_unpoison_memory_region(addr, size)
# define LSAN_REGISTER_ROOT_REGION(base, size) __lsan_register_root_region(base, size)
# define LSAN_UNREGISTER_ROOT_REGION(base, size) __lsan_unregister_root_region(base, size)
# define LSAN_IGNORE_OBJECT(base) __lsan_ignore_object(base)
#else
# define ASAN_POISON_MEMORY_REGION(addr, size)
# define ASAN_UNPOISON_MEMORY_REGION(addr, size)
# define LSAN_REGISTER_ROOT_REGION(base, size)
# define LSAN_UNREGISTER_ROOT_REGION(base, size)
# define LSAN_IGNORE_OBJECT(base)
#endif
#if __has_feature(blocks) && defined(AK_OS_MACOS)
# define AK_HAS_BLOCKS
#endif
#if __has_feature(objc_arc) && defined(AK_OS_MACOS)
# define AK_HAS_OBJC_ARC
#endif
#ifndef AK_OS_SERENITY
# ifdef AK_OS_WINDOWS
// FIXME: No idea where to get this, but it's 4096 anyway :^)
# define PAGE_SIZE 4096
# else
# include <unistd.h>
# undef PAGE_SIZE
# define PAGE_SIZE sysconf(_SC_PAGESIZE)
# endif
#endif
#if defined(AK_OS_WINDOWS)
# define MSG_NOSIGNAL 0
#endif
#if defined(AK_OS_BSD_GENERIC) && !defined(AK_OS_FREEBSD) || defined(AK_OS_HAIKU) || defined(AK_OS_WINDOWS)
# define CLOCK_MONOTONIC_COARSE CLOCK_MONOTONIC
# define CLOCK_REALTIME_COARSE CLOCK_REALTIME
#endif
#ifndef AK_SYSTEM_CACHE_ALIGNMENT_SIZE
# define AK_SYSTEM_CACHE_ALIGNMENT_SIZE __GCC_DESTRUCTIVE_SIZE
#endif
#ifdef AK_CACHE_ALIGNED
# undef AK_CACHE_ALIGNED
#endif
#define AK_CACHE_ALIGNED alignas(AK_SYSTEM_CACHE_ALIGNMENT_SIZE)
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