Compilers

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ACC

Type	Macro
Identification	_ACC_

Altium MicroBlaze C

Type	Macro	Format	Description
Identification	__CMB__
Version	__VERSION__	VRRR	V=VersionRRR=Revision
Version	__REVISION__	P	P=Patch
Version	__BUILD__	VRRRPPP	Build number

Example

Altium MicroBlaze C	__VERSION__	__REVISION__	__BUILD__
1.0r2	1000	2
1.22.2			1022001

Altium C-to-Hardware

Type	Macro	Format	Description
Identification	__CHC__
Version	__VERSION__	VRRR	V=VersionRRR=Revision
Version	__REVISION__	P	P=PatchBeta releases set this to -1
Version	__BUILD__	VRRRPPP	Build number

Example

Altium C-to-Hardware	__VERSION__	__REVISION__	__BUILD__
2.1r1	2001	1
1.22.2			1022001

Amsterdam Compiler Kit

Type	Macro
Identification	__ACK__

ARM Compiler

Type	Macro	Format	Description
Identification	__CC_ARM
Version	__ARMCC_VERSION	VRPBBB	V = VersionR = RevisionP = PatchBBB = Build

Notice that the __ARMCC_VERSION macro is also used as version indicator for Norcroft C, but that the format is different.

Example

Realview C	__ARMCC_VERSION
3.0	300503

Aztec C

Type	Macro	Format	Description
Identification	AZTEC_C``__AZTEC_C__
Version	__VERSION	VRR	V = VersionRR = Revision

Example

Aztec C	__VERSION
5.20	520

Borland C++

Type	Macro	Format
Identification	__BORLANDC__
Version	__BORLANDC__	?
Identification	__CODEGEARC__
Version	__CODEGEARC__	?

Example

Borland C++	C++ Builder	__BORLANDC__	__CODEGEARC__
2.0		0x200
3.0		0x400
3.1		0x410
4.0		0x452
5.0		0x500
5.02	1.0	0x520
3.0	0x530
4.0	0x540
5.5	5.0	0x550
5.51		0x551
5.6.4		0x562
2009	0x613	0x613
2010	0x621	0x621

CC65

Type	Macro	Format	Description
Identification	__CC65__
Version	__CC65__	0xVRP	V = VersionR = RevisionP = Patch

Example

Version	__CC65__
2.10.1	0x2A1

Clang

Type	Macro	Format
Identification	__clang__
Version	__clang_major__	Version
Version	__clang_minor__	Revision
Version	__clang_patchlevel__	Patch

Notice that clang also defines the GNU C version macros, but you should use the clang feature checking macros to detect the availability of various features.

Comeau C++

Type	Macro	Format	Description
Identification	__COMO__
Version	__COMO_VERSION__	VRR	V = VersionRR = Revision

Example

Comeau C++	__COMO_VERSION__
2.3	230

Compaq C/C++

Type	Macro	Format	Description
Identification	__DECC		C compiler
Version	__DECC_VER	VVRRTPPPP	VV = VersionRR = RevisionT = Type (9 = official)PPPP = Patch
Identification	__DECCXX		C++ compiler
Version	__DECCXX_VER	As __DECC_VER
Identification	__VAXC		Obsolete
Identification	VAXC		Obsolete

Example

Compaq C/C++	__DECC_VER
6.0-001	60090001

Convex C

Type	Macro
Identification	__convexc__

Cray C

Type	Macro	Description
Identification	_CRAYC
Version	_RELEASE	Version
Version	_RELEASE_MINOR	Revision

Diab C/C++

Type	Macro	Format	Description
Identification	__DCC__	1
Version	__VERSION_NUMBER__	VRPP	V = VersionR = RevisionPP = Patch

Example

Diab C/C++	__VERSION_NUMBER__
4.4g	4426

DICE C

Type	Macro
Identification	_DICE

Digital Mars

Type	Macro	Format	Description
Identification	__DMC__
Version	__DMC__	0xVRP	V = VersionR = RevisionP = Patch

Example

Digital Mars	__DMC__
7.0	0x700
7.2	0x720
8.0	0x800

Dignus Systems/C++

Type	Macro	Format	Description
Identification	__SYSC__
Version	__SYSC_VER__	VRRPP	V = VersionRR = RevisionPP = Patch

Example

Systems/C	__SYSC_VER__
1.80.32	18032

DJGPP

Type	Macro	Description
Identification	__DJGPP__
Version	__DJGPP__	Version
Version	__DJGPP_MINOR__	Revision
Identification	__GO32__	Defined by DJGPP 1.x

Example

DJGPP	__DJGPP__	__DJGPP_MINOR__
2.01	2	1

EKOPath

Type	Macro	Description
Identification	__PATHCC__
Version	__PATHCC__	Version
Version	__PATHCC_MINOR__	Revision
Version	__PATHCC_PATCHLEVEL__	Patch

Example

EKOPath	__PATHCC__	__PATHCC_MINOR__	__PATHCC_PATCHLEVEL__
2.0	2	0	0

EDG C++ Frontend

Type	Macro	Format	Description
Identification	__EDG__
Version	__EDG_VERSION__	VRR	V = VersionRR = Revision

Example

EDG C++	__EDG_VERSION__
2.30	230

GCC C/C++

Type	Macro	Description
Identification	__GNUC__
Version	__GNUC__	Version
Version	__GNUC_MINOR__	Revision
Version	__GNUC_PATCHLEVEL__	Patch (introduced in version 3.0)

Notice that the meaning of the __GNUC__ macro has changed subtly over the years, from identifying the GNU C/C++ compiler to identifying any compiler that implements the GNU compiler extensions (see the Feature request - a macro defined for GCC discussion for further information). For example, the Intel C++ on Linux also defines these macros from version 8.1 (see the Intel C++ Compiler 8.1 for Linux Release Notes and Intel Compilers for Linux: Compatibility with GNU Compilers.)

Example

GNU C/C++	__GNUC__	__GNUC_MINOR__	__GNUC_PATCHLEVEL__
2.7.x	2	7	N/A
3.0.2	3	0	2

Alternative Version

If you prefer a single version macro, you can define the following yourself.

:::c
#if defined(__GNUC__)
# if defined(__GNUC_PATCHLEVEL__)
#  define __GNUC_VERSION__ (__GNUC__ * 10000 \
                            + __GNUC_MINOR__ * 100 \
                            + __GNUC_PATCHLEVEL__)
# else
#  define __GNUC_VERSION__ (__GNUC__ * 10000 \
                            + __GNUC_MINOR__ * 100)
# endif
#endif

The format of this new macro is:

Type	Macro	Format	Description
Version	__GNUC_VERSION__	VVRRPP	VV = VersionRR = RevisionPP = Patch

Example of Alternative Version

GNU C/C++	__GNUC_VERSION__
2.7.x	20700
3.0.2	30002

Green Hill C/C++

Type	Macro	Format	Description
Identification	__ghs__
Version	__GHS_VERSION_NUMBER__	VRP	V = VersionR = RevisionP = Patch
Version	__GHS_REVISION_DATE__	Epoch time

Example

Green Hill C/C++	__GHS_VERSION_NUMBER__
4.2.1	421

HP ANSI C

Type	Macro
Identification	__HP_cc

HP aC++

Type	Macro	Format	Description
Identification	__HP_aCC
Version	__HP_aCC	1	From version A.01.15 (and A.03.13)
Version	__HP_aCC	VVRRPP	VV = VersionRR = RevisionPP = PatchFrom version A.01.21 (and A.03.25)

Example

HP aCC	__HP_aCC
A.01.21	012100

IAR C/C++

Type	Macro	Format	Description
Identification	__IAR_SYSTEMS_ICC__
Version	__VER__	VRR	V = VersionRR = Revision

Example

IAR C/C++	__VER__
3.34	334

IBM XL C/C++

Type	Macro	Format	Description
Identification	__xlc__
Identification	__xlC__
Version	__xlC__	0xVVRR	VV = VersionRR = Revision
Version	__xlC_ver__	0x0000PPBB	PP = PatchBB = Build
Identification	__IBMC__		From ?
Identification	__IBMCPP__		From ?
Version	__IBMC__``__IBMCPP__	VRP	V = VersionR = RevisionP = Patch

Notice that the z/OS C/C++ compiler also defines __IBMC__ and __IBMCPP__ macros, but with a different syntax. See the entry on the z/OS C/C++ compiler below for further information.

Example

IBM XL C/C++	__xlC__	__IBMCPP__
3.1	0x0301
4.5	0x0405	450
5.0	0x0500	500

IBM z/OS C/C++

This is the XL C/C++ compiler for mainframes (e.g. z/OS). The entry on XL C/C++ has been split into two for clarity.

Type	Macro	Format	Description
Identification	__IBMC__
Identification	__IBMCPP__
Version	__IBMC__``__IBMCPP__	NVRRM	N = Product (0 = C/370, 1 = MVS, 2 = OS/390, 4 = z/OS)V = VersionRR = RevisionP = PatchDefined for z/OS XL C/C++
Version	__COMPILER_VER__	0xNVRRPPPP	N = Product (see above)V = VersionRR = RevisionPPPP = PatchDefined for z/OS XL C/C++

Notice that XL C/C++ also defines __IBMC__ and __IBMCPP__ macros, but with a different syntax. You can use __xlC__ (only defined for XL C/C++) or __COMPILER_VER__ (only defined for z/OS C/C++) to distinguish between the two.

:::c
#if defined(__IBMC__) || defined(__IBMCPP__)
# if defined(__COMPILER_VER__)
/* z/OS C/C++ so __IBMC__ is defined as NVRRM */
# else
/* XL C/C++ so __IBMC__ is defined as VRP */
# endif
#endif

Example

IBM z/OS XL C/C++	__IBMC__	__COMPILER_VER__
1.7	41070	0x41070000

ImageCraft C

Type	Macro
Identification	__IMAGECRAFT__

Intel C/C++

Type	Macro	Format	Description
Identification	__INTEL_COMPILER
Identification	__ICC		Obsolete
Identification	__ECC		Obsolete
Identification	__ICL
Version	__INTEL_COMPILER	VRP	V = VersionR = RevisionP = Patch
Version	__INTEL_COMPILER_BUILD_DATE	YYYYMMDD	YYYY = YearMM = MonthDD = Day

Example

Intel C/C++	__INTEL_COMPILER	__INTEL_COMPILER_BUILD_DATE
5.0	500
6.0	600
8.0	800
9.0	900	20060222

KAI C++

Type	Macro	Format	Description
Identification	__KCC
Version	__KCC_VERSION	0xVRPP	V = VersionR = RevisionPP = Patch (a = 01, b = 02, ...)

Example

KAI C++	__KCC_VERSION
4.0d	4004

KEIL CARM

Type	Macro	Format	Description
Identification	__CA__
Identification	__KEIL__
Version	__CA__	VRR	V = VersionRR = Revision

Example

Keil CARM	__CA__
1.01	101

KEIL C166

Type	Macro	Format	Description
Identification	__C166__
Version	__C166__	VRR	V = VersionRR = Revision

Example

Keil C166	__C166__
5.01	501

KEIL C51

Type	Macro	Format	Description
Identification	__C51__
Identification	__CX51__
Version	__C51__	VRR	V = VersionRR = Revision

Example

Keil C51	__C51__
7.01	701

LCC

Type	Macro
Identification	__LCC__

LLVM

Type	Macro
Identification	__llvm__

MetaWare High C/C++

Type	Macro
Identification	__HIGHC__

Metrowerks CodeWarrior

Type	Macro	Format	Description
Identification	__MWERKS__
Identification	__CWCC__		From 4.2.0
Version	__MWERKS__	1	Until CodeWarrior 7
Version	__MWERKS__	0xVRPP	V = VersionR = RevisionPP = PatchFrom CodeWarrior 7
Version	__CWCC__	0xVRPP	V = VersionR = RevisionPP = PatchFrom 4.2.0

Example

Metrowerks C/C++	__MWERKS__	__CWCC__
2.0	0x2000
2.2	0x2200
4.2.0	0x4200	0x4200

Microsoft Visual C++

Type	Macro	Format	Description
Identification	_MSC_VER
Version	_MSC_VER	VVRR	VV = VersionRR = Revision
Version	_MSC_FULL_VER	VVRRPPPP	VV = VersionRR = RevisionPPPP = PatchFrom ?
Version	_MSC_FULL_VER	VVRRPPPPP	VV = VersionRR = RevisionPPPPP = PatchFrom Visual C++ 8.0
Version	_MSC_BUILD	B	B = Build numberFrom Visual C++ 9.0

Example

Visual C++ 1 2	_MSC_VER	_MSC_FULL_VER
1.0	800
3.0	900
4.0	1000
4.2	1020
5.0	1100
6.0	1200
6.0 SP6	1200	12008804
7.0	1300	13009466
7.1 (2003)	1310	13103077
8.0 (2005)	1400	140050727
9.0 (2008)	1500	150021022
10.0 (2010)	1600	160040219
11.0 (2012)	1700	170050727

Microtec C/C++

Type	Macro
Identification	_MRI

Microway NDP C

Type	Macro
Identification	__NDPC__``__NDPX__

MinGW and MinGW-w64

MinGW (formerly known as MinGW32) is a toolchain for creating 32 Bit Windows executables. The MinGW-w64 projects offers toolchains for creating 32 Bit and 64 Bit Windows executables. The following table shows which macros are defined by each toolchain:

Type	Macro	Description	MinGW32	MinGW-w64 32 Bit	MinGW-w64 64 Bit
Identification	__MINGW32__		defined	defined	defined
Version	__MINGW32_MAJOR_VERSION	Version	defined	defined	defined
Version	__MINGW32_MINOR_VERSION	Revision	defined	defined	defined
Identification	__MINGW64__		-	-	defined
Version	__MINGW64_VERSION_MAJOR	Version	-	defined	defined
Version	__MINGW64_VERSION_MINOR	Revision	-	defined	defined

Notice that __MINGW32_MAJOR_VERSION, __MINGW32_MINOR_VERSION, __MINGW64_VERSION_MAJOR, and __MINGW64_VERSION_MINOR are only defined if appropriate headers are included. Appropriate headers are , , , , and probably more.

Examples

__MINGW32_MAJOR_VERSION	__MINGW32_MINOR_VERSION	__MINGW64_VERSION_MAJOR	__MINGW64_VERSION_MINOR	Description
2	4			MinGW32 2.4
3	20			MinGW32 3.20
3	11	2	0	MinGW-w64 2.0

MIPSpro

Type	Macro	Format	Description
Identification	__sgi
Identification	sgi
Version	_COMPILER_VERSION	VRP	V = VersionR = RevisionP = PatchUntil ?
Version	_SGI_COMPILER_VERSION	VRP	V = VersionR = RevisionP = PatchFrom ?

Example

MIPSpro	_COMPILER_VERSION	_SGI_COMPILER_VERSION
6.0.2	602
7.2.1	721
7.4.4		744

Miracle C

Type	Macro
Identification	MIRACLE

MPW C++

Type	Macro	Format	Description
Identification	__MRC__
Identification	MPW_C
Identification	MPW_CPLUS
Version	__MRC__	0xVVRR	VV = VersionRR = Revision

Example

MPW C++	__MRC__
5.0	0x500

Norcroft C

Type	Macro	Format	Description
Identification	__CC_NORCROFT
Version	__ARMCC_VERSION	V.R	V = VersionR = Revision

Notice that __ARMCC_VERSION is assigned a floating-point number, so it cannot be used by the preprocessor to compare versions.

Example

Norcroft C	__ARMCC_VERSION
4.69	4.69
4.90	4.90

NWCC

Type	Macro
Identification	__NWCC__

Open64

Type	Macro
Identification	__OPEN64__

Pacific C

Type	Macro
Identification	__PACIFIC__

Palm C/C++

Type	Macro	Format	Description
Identification	_PACC_VER
Version	_PACC_VER	0xVRRPPBBB	V = VersionRR = RevisionPP = PatchBBB = Build

Example

Palm C/C++	_PACC_VER
1.0.0.13	0x1000000D

Pelles C

Type	Macro	Format	Description
Identification	__POCC__
Version	__POCC__	VRR	V = VersionRR = Revision

Example

Pelles C	__POCC__
3.00	300

Portland Group C/C++

Type	Macro	Description
Identification	__PGI
Version	__PGIC__	Version
Version	__PGIC_MINOR__	Revision
Version	__PGIC_PATCHLEVEL__	Patch

Example

PGI C/C++	__PGIC__	__PGIC_MINOR__	__PGIC_PATCHLEVEL__
7.0.1	7	0	1
11.9	11	9	0

Renesas C/C++

Type	Macro	Format	Description
Identification	__RENESAS__
Identification	__HITACHI__
Version	__RENESAS_VERSION__	0xVVRR	V = VersionR = RevisionP = Patch
Version	__RENESAS_VERSION__	0xVVRRPP00	From ?
Version	__HITACHI_VERSION__	0xVVRR	As above

Example

Renesas C/C++	__HITACHI_VERSION__	__RENESAS_VERSION__
5.1C	0x0501
8.0	0x8000	0x8000
1.00.00		0x01000000

SAS/C

Type	Macro	Format	Description
Identification	SASC
Identification	__SASC
Identification	__SASC__
Version	__VERSION__		Until ?
Version	__REVISION__		Until ?
Version	__SASC__	VRR	V = VersionRR = RevisionFrom ?

Example

SAS/C	__SASC__	__VERSION__	__REVISION__
5.10		5	10
6.50	650

SCO OpenServer

Type	Macro
Identification	_SCO_DS

Small Device C Compiler

Type	Macro	Format	Description
Identification	SDCC
Version	SDCC	VRP	V = VersionR = RevisionP = Patch

Example

SDCC Version	SDCC Macro
2.5.6	256

SN Compiler

Type	Macro
Identification	__SNC__

Stratus VOS C

Type	Macro	Description
Identification	__VOSC__
Version	__VOSC__	0 = K&R; compiler1 = ANSI C compiler

Sun Studio

Type	Macro	Format	Description
Identification	__SUNPRO_C		C compiler
Version	__SUNPRO_C	0xVRP	V = VersionR = RevisionP = PatchUntil version 5.9
Version	__SUNPRO_C	0xVRRP	V = VersionRR = RevisionP = PatchFrom later releases
Identification	__SUNPRO_CC		C++ compiler
Version	__SUNPRO_CC	As __SUNPRO_C

Example

Compiler version	Sun Studio	__SUNPRO_C
4.2	4.2	0x420
5.0	5.0	0x500
5.2	6.1	0x520
5.3	6.2	0x530
5.4	7	0x540
5.5	8	0x550
5.6	9	0x560
5.7	10	0x570
5.8	11	0x580
5.9	12	0x590
5.10	12.1	0x5100
5.11	12.2	0x5110
5.12	12.3	0x5120

The name of Sun Studio has changed over the years (e.g. Sun Workshop, Forte Developer) but we do not make this distinction in the table above.

Symantec C++

Type	Macro	Format	Description
Identification	__SC__
Version	__SC__	0xVVRR	VV = VersionRR = Revision

TenDRA C/C++

Type	Macro
Identification	__TenDRA__

Texas Instruments C/C++ Compiler

Type	Macro	Format	Description
Identification	__TI_COMPILER_VERSION__
Version	__TI_COMPILER_VERSION__	VVVRRRPPP	VVV = VersionRRR = RevisionPPP = Patch

Example

TI C/C++	__TI_COMPILER_VERSION__
4.9.1	4009001
7.3.1	7003001

THINK C

Type	Macro	Description
Version	THINKC3	Version 3.x
Version	THINKC4	Version 4.x

Tiny C

Type	Macro
Identification	__TINYC__

Turbo C/C++

Type	Macro	Format	Description
Identification	__TURBOC__
Version	__TURBOC__	0xVVRR	VV = VersionRR = RevisionThis pattern does not apply to the values between 0x295 and 0x400.

Example

Turbo C	Turbo C++	__TURBOC__
2.01		0x201
1.00	0x295
1.01	0x296
2.00	0x297

Ultimate C/C++

Type	Macro	Description
Identification	_UCC
Version	_MAJOR_REV = V_MINOR_REV = R	V = VersionR = Revision

Example

Ultimate C/C++	_MAJOR_REV	_MINOR_REV
2.1	2	1

USL C

Type	Macro	Format	Description
Identification	__USLC__
Version	__SCO_VERSION	0xVRRYYYYMM	V = VersionRR = RevisionYYYY = YearMM = Month

Example

USL C	__SCO_VERSION
3.2	302199801

Watcom C++

Type	Macro	Format	Description
Identification	__WATCOMC__
Version	__WATCOMC__	VVRR	VV = VersionRR = Revision

Notice that Watcom C++ became Open Watcom C++ after version 11.0, and the official version numbering (but not the version macro) was restated at version 1.0.

Example

Watcom C++	Open Watcom C++	__WATCOMC__
10.5		1050
11.0		1100
1.0	1200
1.7	1270

Zortech C++

Type	Macro	Format	Description
Identification	__ZTC__
Version	__ZTC__	0xVRP	V = VersionR = RevisionP = Patch