/*
build.h - compile-time build information

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.

In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

For more information, please refer to <http://unlicense.org/>
*/
#pragma once
#ifndef BUILD_H
#define BUILD_H

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

Every macro is intended to be the unified interface for buildsystems that lack
platform & CPU detection, and a neat quick way for checks in platform code
For Q_build* macros, refer to buildenums.h

Any new define must be undefined at first
You can generate #undef list below with this oneliner:
  $ sed 's/\t//g' build.h | grep '^#define XASH' | awk '{ print $2 }' | \
		sort | uniq | awk '{ print "#undef " $1 }'

Then you can use another oneliner to query all variables:
  $ grep '^#undef XASH' build.h | awk '{ print $2 }'
*/

#undef XASH_64BIT
#undef XASH_AMD64
#undef XASH_ANDROID
#undef XASH_APPLE
#undef XASH_ARM
#undef XASH_ARM_HARDFP
#undef XASH_ARM_SOFTFP
#undef XASH_ARMv4
#undef XASH_ARMv5
#undef XASH_ARMv6
#undef XASH_ARMv7
#undef XASH_ARMv8
#undef XASH_BIG_ENDIAN
#undef XASH_DOS4GW
#undef XASH_E2K
#undef XASH_EMSCRIPTEN
#undef XASH_FREEBSD
#undef XASH_HAIKU
#undef XASH_IOS
#undef XASH_IRIX
#undef XASH_JS
#undef XASH_LINUX
#undef XASH_LITTLE_ENDIAN
#undef XASH_MIPS
#undef XASH_MOBILE_PLATFORM
#undef XASH_NETBSD
#undef XASH_OPENBSD
#undef XASH_POSIX
#undef XASH_PPC
#undef XASH_RISCV
#undef XASH_RISCV_DOUBLEFP
#undef XASH_RISCV_SINGLEFP
#undef XASH_RISCV_SOFTFP
#undef XASH_SERENITY
#undef XASH_WIN32
#undef XASH_X86
#undef XASH_NSWITCH
#undef XASH_PSVITA

//================================================================
//
//           PLATFORM DETECTION CODE
//
//================================================================
#if defined _WIN32
	#define XASH_WIN32 1
#elif defined __EMSCRIPTEN__
	#define XASH_EMSCRIPTEN 1
#elif defined __WATCOMC__ && defined __DOS__
	#define XASH_DOS4GW 1
#else // POSIX compatible
	#define XASH_POSIX 1
	#if defined __linux__
		#if defined __ANDROID__
			#define XASH_ANDROID 1
		#endif
		#define XASH_LINUX 1
	#elif defined __FreeBSD__
		#define XASH_FREEBSD 1
	#elif defined __NetBSD__
		#define XASH_NETBSD 1
	#elif defined __OpenBSD__
		#define XASH_OPENBSD 1
	#elif defined __HAIKU__
		#define XASH_HAIKU 1
	#elif defined __serenity__
		#define XASH_SERENITY 1
	#elif defined __sgi
		#define XASH_IRIX 1
	#elif defined __APPLE__
		#include <TargetConditionals.h>
		#define XASH_APPLE 1
		#if TARGET_OS_IOS
			#define XASH_IOS 1
		#endif // TARGET_OS_IOS
	#elif defined __SWITCH__
		#define XASH_NSWITCH 1
	#elif defined __vita__
		#define XASH_PSVITA 1
	#else
		#error
	#endif
#endif

// XASH_SAILFISH is special: SailfishOS by itself is a normal GNU/Linux platform
// It doesn't make sense to split it to separate platform
// but we still need XASH_MOBILE_PLATFORM for the engine.
// So this macro is defined entirely in build-system: see main wscript
// HLSDK/PrimeXT/other SDKs users note: you may ignore this macro
#if XASH_ANDROID || XASH_IOS || XASH_NSWITCH || XASH_PSVITA || XASH_SAILFISH
	#define XASH_MOBILE_PLATFORM 1
#endif

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

#if !defined XASH_ENDIANNESS
	#if defined XASH_WIN32 || __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
		#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
		#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__ || defined _M_ARM64
	#define XASH_64BIT 1
	#define XASH_ARM   8
#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
#elif defined __PPC__ || defined __powerpc__
	#define XASH_PPC 1
	#if defined __PPC64__ || defined __powerpc64__
		#define XASH_64BIT 1
	#endif
#elif defined _M_ARM // msvc
	#define XASH_ARM 7
	#define XASH_ARM_HARDFP 1
#elif defined __arm__
	#if __ARM_ARCH == 8 || __ARM_ARCH_8__
		#define XASH_ARM 8
	#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 __SOFTFP__ || __ARM_PCS_VFP == 0
		#define XASH_ARM_SOFTFP 1
	#else // __SOFTFP__
		#define XASH_ARM_HARDFP 1
	#endif // __SOFTFP__
#elif defined __riscv
	#define XASH_RISCV 1

	#if __riscv_xlen == 64
		#define XASH_64BIT 1
	#elif __riscv_xlen != 32
		#error "Unknown RISC-V ABI"
	#endif

	#if defined __riscv_float_abi_soft
		#define XASH_RISCV_SOFTFP 1
	#elif defined __riscv_float_abi_single
		#define XASH_RISCV_SINGLEFP 1
	#elif defined __riscv_float_abi_double
		#define XASH_RISCV_DOUBLEFP 1
	#else
		#error "Unknown RISC-V float ABI"
	#endif
#else
	#error "Place your architecture name here! If this is a mistake, try to fix conditions above and report a bug"
#endif

#if XASH_ARM == 8
	#define XASH_ARMv8 1
#elif 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
