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Compilers

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ACC

Type Macro
Identification _ACC_

Altium MicroBlaze C

Type Macro Format Description
Identification __CMB__
Version __VERSION__ VRRR V=Version
RRR=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=Version
RRR=Revision
Version __REVISION__ P P=Patch
Beta 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 = Version
R = Revision
P = Patch
BBB = 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 = Version
RR = Revision
Example
Aztec C __VERSION
5.20 520

Borland C++

Type Macro Format
Identification __BORLANDC__
Version __BORLANDC__ ?
Identification __CODEGEARC__
Version __CODEGEARC__ From C++ Builder 2006
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
2006 0x570 0x570
2007 0x590 0x590
2009 0x613 0x613
2010 0x621 0x621
XE 0x630 0x630
XE2 0x640 0x640
XE3 0x650 0x650
XE4 0x660 0x660

CC65

Type Macro Format Description
Identification __CC65__
Version __CC65__ 0xVRP V = Version
R = Revision
P = 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.

The values of the __clang_major__, __clang_minor__, and __clang_patchlevel__ macros are not consistent across distributions of the Clang compiler. For example, the Clang 3.1 distribution available at http://clang.llvm.org defines __clang_major__ and __clang_minor__ as 3 and 1 respectively. The version of Clang distributed with Apple XCode 4.4 is branded as "Apple Clang 4.0" and derives from the open source Clang 3.1 distribution, but defines these macros with the values 4 and 0 respectively. Apple's Clang distribution can be identified by the presence of the __apple_build_version__ macro.

Comeau C++

Type Macro Format Description
Identification __COMO__
Version __COMO_VERSION__ VRR V = Version
RR = 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 = Version
RR = Revision
T = 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 = Version
R = Revision
PP = 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 = Version
R = Revision
P = 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 = Version
RR = Revision
PP = 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

EDG C++ Frontend

Type Macro Format Description
Identification __EDG__
Version __EDG_VERSION__ VRR V = Version
RR = Revision
Example
EDG C++ __EDG_VERSION__
2.30 230
2.45 245

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

Fujitsu C++

Type Macro
Identification __FCC_VERSION

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.

#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 = Version
RR = Revision
PP = 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 = Version
R = Revision
P = 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 = Version
RR = Revision
PP = Patch

From 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 = Version
RR = 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 = Version
RR = Revision
Version __xlC_ver__ 0x0000PPBB PP = Patch
BB = Build
Identification __IBMC__ From ?
Identification __IBMCPP__ From ?
Version __IBMC__
__IBMCPP__
VRP V = Version
R = Revision
P = 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__ __xlC_ver__
3.1 0x0301
4.5 0x0405
5.0 0x0500
12.01.0000.0004 0x0C01 0x00000004

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 = Version
RR = Revision
P = Patch

Defined for z/OS XL C/C++
Version __COMPILER_VER__ 0xNVRRPPPP N = Product (see above)
V = Version
RR = Revision
PPPP = Patch

Defined 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. Alternatively, the macro identifying z/OS (__MVS__) can be used to distinguish between them.

#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
1.13 41130 0x410D0000

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 = Version
R = Revision
P = Patch
Version __INTEL_COMPILER_BUILD_DATE YYYYMMDD YYYY = Year
MM = Month
DD = 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 = Version
R = Revision
PP = 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 = Version
RR = Revision
Example
Keil CARM __CA__
1.01 101

KEIL C166

Type Macro Format Description
Identification __C166__
Version __C166__ VRR V = Version
RR = Revision
Example
Keil C166 __C166__
5.01 501

KEIL C51

Type Macro Format Description
Identification __C51__
Identification __CX51__
Version __C51__ VRR V = Version
RR = 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 = Version
R = Revision
PP = Patch

From CodeWarrior 7
Version __CWCC__ 0xVRPP V = Version
R = Revision
PP = Patch

From 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 = Version
RR = Revision
Version _MSC_FULL_VER VVRRPPPP VV = Version
RR = Revision
PPPP = Patch

From Visual C++ 6.0 Processor Pack
Version _MSC_FULL_VER VVRRPPPPP VV = Version
RR = Revision
PPPPP = Patch

From Visual C++ 8.0
Version _MSC_BUILD B B = Build number

From 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
9.0 SP1 1500 150030729
10.0 (2010) 1600 160030319
10.0 (2010) SP1 1600 160040219
11.0 (2012) 1700 170050727
12.0 (2013) 1800 180021005

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
<stdlib.h>, <stdio.h>, <windows.h>, <windef.h>, 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 = Version
R = Revision
P = Patch

Until ?
Version _SGI_COMPILER_VERSION VRP V = Version
R = Revision
P = Patch

From ?
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 = Version
RR = Revision
Example
MPW C++ __MRC__
5.0 0x500

Norcroft C

Type Macro Format Description
Identification __CC_NORCROFT
Version __ARMCC_VERSION V.R V = Version
R = 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 Format Description
Identification __OPEN64__ Contains the full version as a string
Identification __OPENCC__
Version __OPENCC__ V V = Version
Version __OPENCC_MINOR__ R R = Revision
Version __OPENCC_PATCHLEVEL__ P.B P = Patch
B = Build

Notice that __OPENCC_PATCHLEVEL__ can be a floating-point number (e.g. 5.2 for Open64 version 4.2.5.2) so it cannot be used by the preprocessor to compare patch-levels.

Oracle Pro*C Precompiler

Type Macro
Identification ORA_PROC

Oracle Solaris Studio

Type Macro Format Description
Identification __SUNPRO_C C compiler
Version __SUNPRO_C 0xVRP V = Version
R = Revision
P = Patch

Until version 5.9
Version __SUNPRO_C 0xVRRP V = Version
RR = Revision
P = Patch

From later releases
Identification __SUNPRO_CC C++ compiler
Version __SUNPRO_CC As __SUNPRO_C
Example
Compiler version Solaris 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 Oracle Solaris Studio has changed over the years (e.g. Sun Studio, Sun Workshop, Forte Developer) but we do not make this distinction in the table above.

Pacific C

Type Macro
Identification __PACIFIC__

Palm C/C++

Type Macro Format Description
Identification _PACC_VER
Version _PACC_VER 0xVRRPPBBB V = Version
RR = Revision
PP = Patch
BBB = Build
Example
Palm C/C++ _PACC_VER
1.0.0.13 0x1000000D

Pelles C

Type Macro Format Description
Identification __POCC__
Version __POCC__ VRR V = Version
RR = 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 = Version
R = Revision
P = 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 = Version
RR = Revision

From ?
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 = Version
R = Revision
P = 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 compiler
1 = ANSI C compiler

Symantec C++

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

TenDRA C/C++

Type Macro
Identification __TenDRA__

Texas Instruments C/C++ Compiler

Type Macro Format Description
Identification __TI_COMPILER_VERSION__
Identification _TMS320C6X All C6000 compilers
Version __TI_COMPILER_VERSION__ VVVRRRPPP VVV = Version
RRR = Revision
PPP = 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 = Version
RR = Revision

This 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 = Version
R = Revision
Example
Ultimate C/C++ _MAJOR_REV _MINOR_REV
2.1 2 1

USL C

Type Macro Format Description
Identification __USLC__
Version __SCO_VERSION__ VRRYYYYMM V = Version
RR = Revision
YYYY = Year
MM = Month
Example
USL C __SCO_VERSION__ Description
3.2 302199801
3.4 304200805 UnixWare 7.1.4 UDK C++ (CC)
4.2 402200805 UnixWare 7.1.4 UDK C (cc)

VBCC

Type Macro
Identification __VBCC__

Watcom C++

Type Macro Format Description
Identification __WATCOMC__
Version __WATCOMC__ VVRR VV = Version
RR = 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 = Version
R = Revision
P = Patch

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