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2.7.3 Target-specific Predefined Versions ¶

The D compiler normally predefines several versions that indicate what type of system and machine is in use. They are obviously different on each target supported by GCC.

AArch64

Version relating to the AArch64 family of processors.

Android

Version relating to the Android platform.

ARM

ARM_HardFloat

ARM_SoftFloat

ARM_SoftFP

ARM_Thumb

Versions relating to the ARM family of processors.

Cygwin

Version relating to the Cygwin environment.

darwin

Deprecated; use OSX instead.

DragonFlyBSD

Versions relating to DragonFlyBSD systems.

FreeBSD

FreeBSD_9

FreeBSD_10

FreeBSD_11

FreeBSD_...

Versions relating to FreeBSD systems. The FreeBSD major version number is inferred from the target triplet.

HPPA

HPPA64

Versions relating to the HPPA family of processors.

Hurd

Version relating to GNU Hurd systems.

linux

Version relating to Linux systems.

MinGW

Version relating to the MinGW environment.

MIPS32

MIPS64

MIPS_EABI

MIPS_HardFloat

MIPS_N32

MIPS_N64

MIPS_O32

MIPS_O64

MIPS_SoftFloat

Versions relating to the MIPS family of processors.

NetBSD

Version relating to NetBSD systems.

OpenBSD

Version relating to OpenBSD systems.

OSX

Version relating to OSX systems.

Posix

Version relating to POSIX systems (includes Linux, FreeBSD, OSX, Solaris, etc).

PPC

PPC64

PPC_HardFloat

PPC_SoftFloat

Versions relating to the PowerPC family of processors.

RISCV32

RISCV64

Versions relating to the RISC-V family of processors.

S390

SystemZ

Versions relating to the S/390 and System Z family of processors.

S390X

Deprecated; use SystemZ instead.

Solaris

Versions relating to Solaris systems.

SPARC

SPARC64

SPARC_HardFloat

SPARC_SoftFloat

SPARC_V8Plus

Versions relating to the SPARC family of processors.

Thumb

Deprecated; use ARM_Thumb instead.

D_X32

X86

X86_64

Versions relating to the x86-32 and x86-64 family of processors.

Windows

Win32

Win64

Versions relating to Microsoft Windows systems.