openmp - <omp.h> library isn't found in the GCC version (4.2.1) in Mavericks

Question

I have a problem with GCC. I want to update it to a new version, from the 4.2.1, to program with parallel programming. However, in this version there is no library . How can I download an updated version?

The error that the terminal give me is:

omp_hello.c:11:10: fatal error: 'omp.h' file not found
#include <omp.h>
         ^
1 error generated.

Answer 1

1. download gcc-4.9-bin.tar.gz download or newer from http://hpc.sourceforge.net/: http://prdownloads.sourceforge.net/hpc/gcc-4.9-bin.tar.gz

2. cd to your downloads folder and un-gzip the archive gunzip gcc-4.9-bin.tar.gz (Google Chrome would do that automatically)

3. in the same folder run sudo tar -xvf gcc-4.9-bin.tar -C / - this will place new executable to /usr/local/bin

4. add the following to ~/.bash_profile: export PATH=/usr/local/bin:$PATH

5. open new terminal and run which gcc. This should point to /usr/local/bin/gcc