// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// This file adds defines about the platform we're currently building on.
//  Operating System:
//    OS_WIN / OS_MACOSX / OS_LINUX / OS_POSIX (MACOSX or LINUX) /
//    OS_NACL (NACL_SFI or NACL_NONSFI) / OS_NACL_SFI / OS_NACL_NONSFI
//  Compiler:
//    COMPILER_MSVC / COMPILER_GCC
//  Processor:
//    ARCH_CPU_X86 / ARCH_CPU_X86_64 / ARCH_CPU_X86_FAMILY (X86 or X86_64)
//    ARCH_CPU_32_BITS / ARCH_CPU_64_BITS

#ifndef LIB_FXL_BUILD_CONFIG_H_
#define LIB_FXL_BUILD_CONFIG_H_

#if defined(__Fuchsia__)
#define OS_FUCHSIA 1
#elif defined(ANDROID)
#define OS_ANDROID 1
#elif defined(__APPLE__)
// only include TargetConditions after testing ANDROID as some android builds
// on mac don't have this header available and it's not needed unless the target
// is really mac/ios.
#include <TargetConditionals.h>
#define OS_MACOSX 1
#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
#define OS_IOS 1
#endif  // defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
#elif defined(__linux__)
#define OS_LINUX 1
// include a system header to pull in features.h for glibc/uclibc macros.
#include <unistd.h>
#if defined(__GLIBC__) && !defined(__UCLIBC__)
// we really are using glibc, not uClibc pretending to be glibc
#define LIBC_GLIBC 1
#endif
#elif defined(_WIN32)
#define OS_WIN 1
#elif defined(__FreeBSD__)
#define OS_FREEBSD 1
#elif defined(__OpenBSD__)
#define OS_OPENBSD 1
#elif defined(__sun)
#define OS_SOLARIS 1
#elif defined(__QNXNTO__)
#define OS_QNX 1
#else
#error Please add support for your platform in lib/fxl/build_config.h
#endif

// For access to standard BSD features, use OS_BSD instead of a
// more specific macro.
#if defined(OS_FREEBSD) || defined(OS_OPENBSD)
#define OS_BSD 1
#endif

// For access to standard POSIXish features, use OS_POSIX instead of a
// more specific macro.
#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || \
    defined(OS_SOLARIS) || defined(OS_ANDROID) || defined(OS_NACL) || defined(OS_QNX)
#define OS_POSIX 1
#endif

// Processor architecture detection.  For more info on what's defined, see:
//   http://msdn.microsoft.com/en-us/library/b0084kay.aspx
//   http://www.agner.org/optimize/calling_conventions.pdf
//   or with gcc, run: "echo | gcc -E -dM -"
#if defined(_M_X64) || defined(__x86_64__)
#define ARCH_CPU_X86_FAMILY 1
#define ARCH_CPU_X86_64 1
#define ARCH_CPU_64_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(_M_IX86) || defined(__i386__)
#define ARCH_CPU_X86_FAMILY 1
#define ARCH_CPU_X86 1
#define ARCH_CPU_32_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(__ARMEL__)
#define ARCH_CPU_ARM_FAMILY 1
#define ARCH_CPU_ARMEL 1
#define ARCH_CPU_32_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(__aarch64__)
#define ARCH_CPU_ARM_FAMILY 1
#define ARCH_CPU_ARM64 1
#define ARCH_CPU_64_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(__pnacl__)
#define ARCH_CPU_32_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#elif defined(__MIPSEL__)
#if defined(__LP64__)
#define ARCH_CPU_MIPS64_FAMILY 1
#define ARCH_CPU_MIPS64EL 1
#define ARCH_CPU_64_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#else
#define ARCH_CPU_MIPS_FAMILY 1
#define ARCH_CPU_MIPSEL 1
#define ARCH_CPU_32_BITS 1
#define ARCH_CPU_LITTLE_ENDIAN 1
#endif
#else
#error Please add support for your architecture in build/build_config.h
#endif

#endif  // LIB_FXL_BUILD_CONFIG_H_