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 MKL major version
`__INTEL_MKL_MINOR__`	Intel MKL minor version
`__INTEL_MKL_UPDATE__`	Intel MKL update number
`INTEL_MKL_VERSION`	Intel MKL 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 MKL. 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