Using Predefined Preprocessor Symbols for Intel® MKL Version-Dependent Compilation

Preprocessor symbols (macros) substitute values in a program before it is compiled. The substitution is performed in the preprocessing phase.

The following preprocessor symbols are available:

Predefined Preprocessor Symbol	Description
__INTEL_MKL__	Intel® oneAPI Math Kernel Library major version
__INTEL_MKL_MINOR__	Intel® oneAPI Math Kernel Library minor version
__INTEL_MKL_UPDATE__	Intel® oneAPI Math Kernel Library update number
INTEL_MKL_VERSION	Intel® oneAPI Math Kernel Library full version in the following format: INTEL_MKL_VERSION = ( __INTEL_MKL__ 100+ __INTEL_MKL_MINOR__ )100+ __INTEL_MKL_UPDATE__

These symbols enable conditional compilation of code that uses new features introduced in a particular version of the library.

To perform conditional compilation:

Depending on your compiler, include in your code the file where the macros are defined:

C/C++ compiler:: mkl_version.h
,
or
mkl.h
, which includes
mkl_version.h
Intel® Fortran compiler:: mkl.fi
Any Fortran compiler with enabled preprocessing:: mkl_version.h
Read the documentation for your compiler for the option that enables preprocessing.

[Optionally] Use the following preprocessor directives to check whether the macro is defined:

#ifdef, #endif

for C/C++

!DEC$IF DEFINED, !DEC$ENDIF

for Fortran

Use preprocessor directives for conditional inclusion of code:

#if, #endif

for C/C++

!DEC$IF, !DEC$ENDIF

for Fortran

Example

This example shows how to compile a code segment conditionally for a specific version of

Intel® oneAPI Math Kernel Library

. In this case, the version is 11.2 Update 4:

Intel®
Fortran Compiler:

include "mkl.fi"
!DEC$IF DEFINED INTEL_MKL_VERSION
!DEC$IF INTEL_MKL_VERSION .EQ. 110204
*   Code to be conditionally compiled 
!DEC$ENDIF
!DEC$ENDIF

C/C++ Compiler
. Fortran Compiler with Enabled Preprocessing
:

#include "mkl.h"
#ifdef INTEL_MKL_VERSION
#if INTEL_MKL_VERSION ==  110204
...     Code to be conditionally compiled
#endif
#endif

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