Intel® Fortran Compiler 17.0 Developer Guide and Reference

qopenmp-lib, Qopenmp-lib

Lets you specify an OpenMP* run-time library to use for linking. Option -qopenmp-lib is the replacement option for -openmp-lib, which is deprecated.

Syntax

Linux and macOS:

-qopenmp-lib=type

Windows:

/Qopenmp-lib:type

Arguments

type

Specifies the type of library to use; it implies compatibility levels. Currently, the only possible value is:

compat

Tells the compiler to use the compatibility OpenMP* run-time library (libiomp). This setting provides compatibility with object files created using Microsoft* and GNU* compilers.

Default

-qopenmp-lib=compat
or/Qopenmp-lib:compat

The compiler uses the compatibility OpenMP* run-time library (libiomp).

Description

This option lets you specify an OpenMP* run-time library to use for linking.

The compatibility OpenMP run-time libraries are compatible with object files created using the Microsoft* OpenMP run-time library (vcomp) or the GNU OpenMP run-time library (libgomp).

To use the compatibility OpenMP run-time library, compile and link your application using the compat setting for option [q or Q]openmp-lib. To use this option, you must also specify one of the following compiler options:

On Windows* systems, the compatibility OpenMP* run-time library lets you combine OpenMP* object files compiled with the Microsoft* C/C++ compiler with OpenMP* object files compiled with the Intel® C, Intel® C++, or Intel® Fortran compilers. The linking phase results in a single, coherent copy of the run-time library.

On Linux* systems, the compatibility Intel OpenMP* run-time library lets you combine OpenMP* object files compiled with the GNU* gcc or gfortran compilers with similar OpenMP* object files compiled with the Intel® C, Intel® C++, or Intel® Fortran compilers. The linking phase results in a single, coherent copy of the run-time library.

You cannot link object files generated by the Intel® Fortran compiler to object files compiled by the GNU Fortran compiler, regardless of the presence or absence of the [Q]openmp compiler option. This is because the Fortran run-time libraries are incompatible.

Note

The compatibility OpenMP run-time library is not compatible with object files created using versions of the Intel compilers earlier than 10.0.

Note

On Windows* systems, this option is processed by the compiler, which adds directives to the compiled object file that are processed by the linker. On Linux* and OS X* systems, this option is processed by the ifort command that initiates linking, adding library names explicitly to the link command.

IDE Equivalent

None

Alternate Options

None

See Also