How does Intel compiler locate openmp headers?

[Nav]

I do not know how gcc finds the openmp headers either, but I guess the path would be set because openmp comes bundled with gcc.

But since the openmp header files don't come bundled with the Intel C++ compiler, how does the compiler find the files? I'm working on Fedora.

If GCC was not installed on my system, how would I be able to run openmp on the Intel C++ compiler? Would I have to download all the openmp headers, place it in a folder and specify an environment variable that will lead the compiler to that folder?

How would I go about doing it?

[aazue]

Hi

About your remarks

(If GCC was not installed on my system .....)

If Gnu compiler is not installed you can not install or running Icc.

Kind regards

[TimP]

As Bustaf said, icc requires an active installation of g++, from which it takes most of the headers and libraries. It doesn't require openmp support in the g++, as it can use older versions of g++, so all OpenMP required headers are taken from icc's own include directory.

[JenniferJ · Accepted solution]

Quoting Nav

But since the openmp header files don't come bundled with the Intel C++ compiler, how does the compiler find the files? I'm working on Fedora.

Correction. The openmp header "omp.h" is included in the Intel C++ compiler. Please check the "/opt/intel/.../include" directory.

If you installed gcc as suggested by others, you should see "omp.h" is also provided by gcc. But you should use the "omp.h" from Intel C++ compiler if you'll build your app with it.

So to get it working, you'll need to do:

1. install the gcc and libs

2. install the Intel C++ compiler 11.1 for Linux

3. open a shell command window, source the "iccvarsXX.sh" to set up the correct environment

4. use "icpc" to build .cpp files or "icc" for .c files

Thanks,

Jennifer

[Nav]

Thanks Jennifer. I had a look at the omp.h of the Intel compiler. Interesting to know...