Source Code Macros

OW Architecture Macros

To guard OW architecture specific source code use following preferred architecture macros.

Target architecture	Preferred architecture macro	Deprecated architecture macros
8086	_M_I86	__I86__, __86__, __X86__, _X86_
80x86	_M_X86	_M_I386, __386__, __X86__, _X86_
x64	_M_X64
Alpha	__AXP__	_M_ALPHA, __ALPHA__, _ALPHA_
Mips	__MIPS__	_M_MRX000
PPC	__PPC__	_M_PPC, __POWERPC__, _PPC_
ARM-32	_M_ARM
ARM-64	_M_ARM64

OW Target OS Macros

To guard OW Target specific source code use following preferred architecture macros.

Target OS	Architecture neutral macro	Specific macros
DOS	__DOS__	__DOS_086__, __DOS_386__
OS/2	__OS2__	__OS2_286__, __OS2_386__, __OS2_PPC__
Windows	__WINDOWS__	__WINDOWS_286__, __WINDOWS_386__
NT (WIN32)	__NT__	__NT_386__, __NT_AXP__, __NT_MIPS__, __NT_PPC__
NT (WIN64)	__NT__	__NT_X64__
Linux	__LINUX__, __UNIX__	__LINUX_386__, __LINUX_X64__, __LINUX_MIPS__, __LINUX_PPC__, __LINUX_ARM__, __LINUX_ARM64__
Netware	__NETWARE__	__NETWARE_386__ __NETWARE5__
QNX	__QNX__, __UNIX__	__QNX_286__, __QNX_386__
RDOS	__RDOS__
RDOS drivers	__RDOSDEV__
OSX	__OSX__, __UNIX__	__OSX_386__, __OSX_X64__, __OSX_ARM__, __OSX_ARM64__