/*
build.h - compile-time build information
Copyright (C) 2019 a1batross

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
*/
#pragma once
#ifndef BUILD_H
#define BUILD_H

// All XASH_* macros set by this header are guaranteed to have positive value otherwise not defined

// Any new define must be undefined at first
// You can generate #undef list below with this oneliner:
//   $ cat build.h | sed 's/\t//g' | grep '^#define XASH' | awk '{ print $2 }' | sort | uniq | awk '{ print "#undef " $1 }'
// 
// So in various buildscripts you can grep for ^#undef XASH and select only second word
// or in another oneliner:
//   $ cat build.h | grep '^#undef XASH' | awk '{ print $2 }' 

#undef XASH_64BIT
#undef XASH_AMD64
#undef XASH_ANDROID
#undef XASH_APPLE
#undef XASH_ARM
#undef XASH_ARM64
#undef XASH_ARM_HARDFP
#undef XASH_ARM_SOFTFP
#undef XASH_ARMv4
#undef XASH_ARMv5
#undef XASH_ARMv6
#undef XASH_ARMv7
#undef XASH_BIG_ENDIAN
#undef XASH_BSD
#undef XASH_E2K
#undef XASH_EMSCRIPTEN
#undef XASH_FREEBSD
#undef XASH_IOS
#undef XASH_JS
#undef XASH_LINUX
#undef XASH_LITTLE_ENDIAN
#undef XASH_MINGW
#undef XASH_MIPS
#undef XASH_MOBILE_PLATFORM
#undef XASH_MSVC
#undef XASH_NETBSD
#undef XASH_OPENBSD
#undef XASH_WIN32
#undef XASH_WIN64
#undef XASH_X86

//================================================================
//
//           OPERATING SYSTEM DEFINES
//
//================================================================
#if defined(_WIN32)
	#define XASH_WIN32 1
	#if defined(__MINGW32__)
		#define XASH_MINGW 1
	#elif defined(_MSC_VER)
		#define XASH_MSVC 1
	#endif

	#if defined(_WIN64)
		#define XASH_WIN64 1
	#endif
#elif defined(__linux__)
	#define XASH_LINUX 1
	#if defined(__ANDROID__)
		#define XASH_ANDROID 1
	#endif // defined(__ANDROID__)
#elif defined(__APPLE__)
	#include <TargetConditionals.h>
	#define XASH_APPLE 1
	#if TARGET_OS_IOS
		#define XASH_IOS 1
	#endif // TARGET_OS_IOS
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
	#define XASH_BSD 1
	#if defined(__FreeBSD__)
		#define XASH_FREEBSD 1
	#elif defined(__NetBSD__)
		#define XASH_NETBSD 1
	#elif defined(__OpenBSD__)
		#define XASH_OPENBSD 1
	#endif
#elif defined __EMSCRIPTEN__
	#define XASH_EMSCRIPTEN 1
#else
#error "Place your operating system name here! If this is a mistake, try to fix conditions above and report a bug"
#endif

#if defined XASH_ANDROID || defined XASH_IOS
	#define XASH_MOBILE_PLATFORM 1
#endif

//================================================================
//
//           ENDIANNESS DEFINES
//
//================================================================

#if defined(XASH_LITTLE_ENDIAN) && defined(XASH_BIG_ENDIAN)
	#error "Both XASH_LITTLE_ENDIAN and XASH_BIG_ENDIAN are defined"
#endif

#if !defined(XASH_LITTLE_ENDIAN) || !defined(XASH_BIG_ENDIAN)
	#if defined XASH_MSVC || __LITTLE_ENDIAN__
		//!!! Probably all WinNT installations runs in little endian
		#define XASH_LITTLE_ENDIAN 1
	#elif __BIG_ENDIAN__
		#define XASH_BIG_ENDIAN 1
	#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && defined(__ORDER_LITTLE_ENDIAN__) // some compilers define this
		#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
			#define XASH_BIG_ENDIAN 1
		#elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
			#define XASH_LITTLE_ENDIAN 1
		#else
			#error "Unknown endianness!"
		#endif
	#else
		#include <sys/param.h>
		#if __BYTE_ORDER == __BIG_ENDIAN
			#define XASH_BIG_ENDIAN 1
		#elif __BYTE_ORDER == __LITTLE_ENDIAN
			#define XASH_LITTLE_ENDIAN 1
		#else
			#error "Unknown endianness!"
		#endif
	#endif // !XASH_WIN32
#endif

//================================================================
//
//           CPU ARCHITECTURE DEFINES
//
//================================================================
#if defined(__x86_64__) || defined(_M_X64)
	#define XASH_64BIT 1
	#define XASH_AMD64 1
#elif defined(__i386__) || defined(_X86_) || defined(_M_IX86)
	#define XASH_X86 1
#elif defined __aarch64__
	#define XASH_64BIT 1
	#define XASH_ARM64 1
#elif defined __arm__ || defined _M_ARM
	#if defined _M_ARM
		// msvc can only armv7 ?
		#define XASH_ARM 7
	#elif __ARM_ARCH == 7 || __ARM_ARCH_7__
		#define XASH_ARM 7
	#elif __ARM_ARCH == 6 || __ARM_ARCH_6__ || __ARM_ARCH_6J__
		#define XASH_ARM 6
	#elif __ARM_ARCH == 5 || __ARM_ARCH_5__
		#define XASH_ARM 5
	#elif __ARM_ARCH == 4 || __ARM_ARCH_4__
		#define XASH_ARM 4
	#else
		#error "Unknown ARM"
	#endif

	#if defined _M_ARM
		#error "No WinMobile port yet! Need to determine which ARM float ABI msvc uses if applicable"
	#endif

	#if defined __SOFTFP__ || __ARM_PCS_VFP == 0
		#define XASH_ARM_SOFTFP 1
	#else // __SOFTFP__
		#define XASH_ARM_HARDFP 1
	#endif // __SOFTFP__
#elif defined __mips__
	#define XASH_MIPS 1
#elif defined __EMSCRIPTEN__
	#define XASH_JS 1
#elif defined __e2k__
	#define XASH_64BIT 1
	#define XASH_E2K 1
#else
	#error "Place your architecture name here! If this is a mistake, try to fix conditions above and report a bug"
#endif

#if defined(XASH_WAF_DETECTED_64BIT) && !defined(XASH_64BIT)
	#define XASH_64BIT 1
#endif

#if XASH_ARM == 7
	#define XASH_ARMv7 1
#elif XASH_ARM == 6
	#define XASH_ARMv6 1
#elif XASH_ARM == 5
	#define XASH_ARMv5 1
#elif XASH_ARM == 4
	#define XASH_ARMv4 1
#endif

#endif // BUILD_H