CODEWITHSUNDEEP
c++openmpicc
John X.
John X.

Reputation: 13

icpc: command line error: option '-openmp' not supported

I am trying to compile simple code using openmp.

Here is the code (file test.cpp):

int main()
{
    double a[100];
    #pragma omp parallel for
    for (int i = 0; i < 100; ++i) {
        a[i] = i;
    }
    return 0;
}

I compile using the following command:

icpc -openmp test.cpp

the result is:

icpc: command line error: option '-openmp' not supported

OS Debian X64

Can you help me please?

Update:

using -fopenmp gives the same error.

From here: https://software.intel.com/en-us/node/522690

Command-Line Examples, Linux* To compile and link (build) the entire application with one command using the Intel OpenMP libraries, specify the following Intel® C++ Compiler command on Linux* platforms:

C source

icc -openmp hello.c

C++ source

icpc -openmp hello.cpp

UPDATE2:

-qopenmp gives the same error. I installed intel system studio, and use the compiler from /opt/intel/bin. In PATH there is nothing related to intel. Maybe i should add somethin to PATH for intel to recognize that it can use openmp. I have tried only adding to PATH /opt/intel/bin.

Upvotes: 0

Views: 5473

Answers (2)

Hristo Iliev
Hristo Iliev

Reputation: 74435

-openmp used to be the option for enabling the OpenMP support in older versions of the Intel compiler. In the newer versions the option is -qopenmp.

In any case, even the newest version (17.0) accepts -openmp:

$ icpc -openmp test.cpp
icpc: command line remark #10411: option '-openmp' is deprecated and will be removed in a future release. Please use the replacement option '-qopenmp'

Therefore, there is probably something wrong with the setup of your Intel compilers. As a hint, Intel compilers tend to issue error numbers for unrecognised options. Make sure that icpc is indeed the Intel compiler and not a wrapper around GCC or an alias.

Upvotes: 2

The Quantum Physicist
The Quantum Physicist

Reputation: 26326

How about

-qopenmp

I think that's the official way you add OpenMP to intel compiler.

If you're on Windows, then use:

/Qopenmp

Upvotes: 0

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